China Y&X Beijing Technology Co., Ltd. Company News

Introducing DC550i, an innovative Copper-Sulfur Depressant designed to optimize the copper-molybdenum separation process. This highly efficient inhibitor boasts a selective action against copper and sulfur, making it especially suitable for high-sulfur copper-molybdenum ores. Here’s why DC550i stands out in mineral processing:   Key Advantages of DC550i Eco-Friendly and Non-Toxic: Unlike traditional reagents like sodium sulfide (Na2S) or sodium hydrosulfide (NaHS), DC550i is a green, environmentally friendly chemical that is safe to use and store. It poses no toxic risk, ensuring a safer working environment.   Ready-to-Use Liquid Form: DC550i can be utilized directly in its original liquid form or diluted with water, based on site-specific conditions. This not only saves time but also reduces labor and operational costs.   Superior Inhibition with Lower Dosage: DC550i offers exceptional copper inhibition efficiency, requiring only about 50% of the dosage needed for traditional sodium sulfide or sodium hydrosulfide treatments. This results in significant cost savings and enhanced processing performance.     Applications and Functionality Applicable Minerals: DC550i is ideal for copper-molybdenum sulfide ore and high-sulfur metallic ores. It effectively inhibits minerals such as chalcopyrite, pyrite, and pyrrhotite, ensuring a high-quality separation process.   Function: As a robust inhibitor for copper-molybdenum separation, DC550i excels in strong and selective inhibition of copper and sulfur. It is particularly effective in high-sulfur environments, providing efficient and reliable results with minimal dosage.     By incorporating DC550i into your mineral processing workflow, you gain a competitive edge through its environmental benefits, operational simplicity, and cost-efficiency. Elevate your copper-molybdenum separation process with DC550i – the future of eco-friendly mineral processing.

On July 16, Montage Gold Corp., a Canadian-listed company, announced a brokered private placement of up to 97,142,857 common shares at a price of CAD 1.75 per share, raising total funds of up to CAD 170 million. This includes a strategic investment of CAD 57.3 million (approximately 300 million yuan) from Zijin Mining Group Co., Ltd., giving it a 9.9% stake. The Lundin Family Trust is also increasing its holdings.   Montage Gold, headquartered in Vancouver, Canada, has its flagship Koné Gold Project located in northwest Côte d'Ivoire. The project includes two deposits, Koné and Gbongogo, 35 km apart, situated within the Birimian Baoule-Mossi domain of the West African Craton. According to a January 2024 estimate, the Koné deposit has an ore reserve of 174 million tons with an average grade of 0.72 g/t, containing 4.01 million ounces (125 tons) of gold. At the end of 2023, resources for both deposits were estimated, with Koné at a cut-off grade of 0.20 g/t containing 4.74 million ounces (147 tons) and Gbongogo at a cut-off grade of 0.50 g/t containing 520,000 ounces (16 tons).   A feasibility study published this year identifies the Koné project as one of Africa's top-quality gold projects, with a mine life of 16 years and an all-in sustaining cost (AISC) of USD 998 per ounce. The average annual production for the first 8 years exceeds 300,000 ounces (9.3 tons). In this fundraising round, Zijin plans to purchase 32,714,829 common shares, resulting in a 9.9% stake in Montage post-issuance. The Lundin Family Trust plans to buy 24,588,865 common shares, increasing its stake from 17.7% to 19.9%. Company insiders also intend to participate in the issuance. Net proceeds from the fundraising will be used for the development of the Koné project, exploration, working capital, and general corporate purposes. Subject to all necessary regulatory and other approvals, the fundraising is expected to complete during the week of August 12, 2024.   Martino De Ciccio, CEO of Montage Gold, stated: "Following Zijin Mining's thorough due diligence and site visit, as well as the Lundin family's increased investment in Montage, we are pleased to welcome Zijin Mining as a major shareholder. These investments enhance our ability to achieve our strategy of becoming a top multi-asset gold producer in Africa and validate the potential of our Koné Gold Project in Côte d'Ivoire. With a strengthened balance sheet, we will be able to swiftly unlock value for our stakeholders, advance the Koné project with construction anticipated to commence in Q1 2025, and continue our exploration strategy to delineate high-grade targets that can be incorporated into the mine plan at the start of operations."   Source: montagegold.com

Contents: 1. Classification of Gold-Copper Ores and Corresponding Beneficiation Processes 2. Considerations and Operational Methods for Cyanidation-Flotation Processes in Gold-Copper Ores 3. Comparative Analysis of Three Flotation Processes for Gold-Copper Ores 4. Re-Flotation of Tailings from Gold-Copper Beneficiation Equipment 5. Optimization of Reprocessing Flotation Tailings from Gold-Copper Ores   1. Classification of Gold-Copper Ores and Corresponding Beneficiation Processes: Gold-copper ores are divided into sulfide and oxide types, each requiring different beneficiation methods due to their distinct properties.   In sulfide ores, the primary metallic minerals are chalcopyrite and pyrite, with minor minerals including arsenopyrite, pyrrhotite, chalcocite, and bornite. Gangue minerals include quartz, sericite, and plagioclase. Gold is closely associated with chalcopyrite and also occurs in pyrite and other sulfides, with minimal presence in gangue. The main method for processing these ores is flotation to produce a mixed concentrate of gold, copper, and sulfur, which is then separated by flotation to obtain gold-copper and gold-sulfur concentrates. The gold-copper concentrate is sent to a smelter for comprehensive recovery, while the gold-sulfur concentrate can be cyanide leached and then smelted to recover gold. If the gold particle size is coarse, mercury amalgamation and gravity separation can be added before flotation to recover coarse gold.   Gold-copper oxide ores contain iron hydroxide and copper oxide minerals, making them difficult to process. When using a flotation-cyanidation combined process, the flotation recovery of gold-bearing iron hydroxide is challenging, and copper minerals affect cyanidation, resulting in poor recovery. A combined beneficiation and smelting process is preferred: first, recover gold-bearing sulfides by flotation, then use different reagents to recover copper oxides and gold-coated surfaces, and finally, acid leach to recover cleaned copper and gold-bearing sulfides.     2. Considerations and Operational Methods for Cyanidation-Flotation Processes in Gold-Copper Ores: Copper minerals associated with gold, except for a few like chalcopyrite and chrysocolla, have high solubility in cyanide solutions. Soluble copper competes with gold for cyanide and oxygen, hindering gold dissolution. Therefore, beneficiation equipment should adjust the process based on the copper content in the ore.   For ores with low soluble copper content, cyanide consumption can be increased if economically feasible. Operations should be conducted at lower temperatures and cyanide concentrations, as copper dissolution rates increase with higher temperatures and cyanide concentrations. Segmental addition of cyanide helps control dissolution rates, ensuring gold recovery while minimizing cyanide consumption.     3. Comparative Analysis of Three Flotation Processes for Gold-Copper Ores: Preferential flotation process: Sequentially produces gold-copper concentrate, iron sulfide concentrate, and tailings. Mixed flotation process: More likely to produce discarded tailings compared to the preferential process. Iso-flotation process: Separates easy-to-float gold-sulfides from difficult-to-float gold-sulfides. Each process requires different conditions due to varying floatability. For difficult-to-float gold-sulfides, increased collector dosage ensures thorough recovery. During separation flotation of mixed concentrates, only small amounts of depressants are needed as easy-to-float pyrite particles are already absent. The iso-flotation process requires more equipment than the other two but offers high flotation indices and reduced reagent consumption.   4. Re-Flotation of Tailings from Gold-Copper Beneficiation Equipment: To fully utilize gold-copper resources, various leaching methods can be applied to tailings for comprehensive recovery. For instance, using dilute sulfuric acid to leach copper, followed by iron replacement to obtain sponge copper, with the resulting copper-depleted residue cyanide leached for gold. This method is also applicable for treating gold-copper concentrates.   For ores with high copper content (e.g., >0.3%), where cyanide consumption is economically unfeasible, flotation can be used to obtain copper concentrate, followed by cyanidation of the tailings for gold recovery.     5. Optimization of Reprocessing Flotation Tailings from Gold-Copper Ores: To increase the value of reprocessed flotation tailings, three trials were conducted: industrial roughing tests on fixed chutes, laboratory re-grinding and flotation tests of rough concentrate, and laboratory re-grinding and full-slime cyanidation leaching tests of rough concentrate. The results suggest two options for reprocessing: chute roughing followed by flotation, or chute roughing followed by cyanidation. The former increases grinding and flotation costs, while the latter increases grinding and leaching costs. The optimal process should be determined through detailed economic and technical comparison. The beneficiation plant should use targeted special collectors to improve flotation recovery rates based on a single-stage grinding-flotation process.   Y&X Beijing Technology Co., Ltd. specializes in efficient, eco-friendly reagents for metal and non-metal ore beneficiation. With extensive experience in ores like copper, molybdenum, gold, silver, lead, zinc, nickel, magnesium, cobalt, palladium, bismuth, fluorite, and phosphate, we offer customized, advanced solutions to maximize your benefits. Committed to providing one-stop beneficiation services, we look forward to a successful partnership with you.  

In 2023, the world's top ten gold mining companies were ranked by gold production. Except for Navoi Mining and Metallurgical Company, production data is based on full-year company press releases as of December 31, 2023.   1. Newmont, 5.5 million ounces Despite an 8% decline in production compared to 2022, Newmont remains the largest gold producer, with operations spanning four continents and producing 5.5 million ounces. Last year, Newmont spent $17 billion to acquire Newcrest Mining, significantly expanding its operations in Australia and Canada and solidifying its position as the world's largest gold miner.   2. Barrick Gold, 4.05 million ounces Barrick Gold's 2023 production was 4.05 million ounces, slightly down from the previous year (-2.1%) and below its forecast and analysts' expectations. Unlike Newmont's major moves, Barrick's CEO has repeatedly denied plans for any large-scale acquisitions, stating the company will focus on organic growth, with expansion plans in the Dominican Republic and Nevada.   3. Agnico Eagle, 3.44 million ounces In stark contrast to the "big two," Agnico Eagle's production grew by nearly 10%, thanks to its acquisition of the remaining stake in Canada's largest open-pit gold mine, Canadian Malartic, and the mines acquired from Kirkland Lake Gold in 2022. Besides consolidating its production in Canada, Agnico Eagle is also investing in growth projects in Finland, where its Kittila operation runs Europe's largest primary gold mine.   4. Navoi (NMMC), 2.9 million ounces Navoi Mining and Metallurgical Company (NMMC) is Uzbekistan's largest industrial enterprise with a rich history of gold production. Although NMMC reports annual production in monetary terms, according to data from S&P Global, its 2023 production totaled 2.9 million ounces, enough to maintain its position among the top four producers.   5. Polyus, 2.9 million ounces In 2023, Polyus's production increased by 14%, reaching 2.9 million ounces, with refined gold accounting for 2.48 million ounces and the rest from flotation concentrate. Like many other Russian companies, this Moscow-based gold company faced Western sanctions last year, forcing it to gradually wind down its mining operations.   6. AngloGold Ashanti, 2.59 million ounces AngloGold's production in 2023 fell by 3% year-over-year due to reduced processed ore volumes and lower ore grades. Equipment failures at one of its mines in Ghana also contributed to the production decline. Despite facing floods in Australia, the Johannesburg-based gold miner maintains a 2024 production target of 2.79 million ounces.   7. Gold Fields, 2.3 million ounces In 2023, Gold Fields' production once again lagged behind its South African peer, dropping by 4% compared to the previous year. At the end of last year, the company sold its 45% stake in the Asanko gold mine in Ghana to its joint venture partner Galiano Gold. However, the company’s new Salares Norte mine in Chile, which saw its first gold pour in April after years of delays, is expected to offset the production loss. Rumors of merger talks between Gold Fields and AngloGold seemed to have been confirmed as the two companies formed a joint venture in Ghana in March last year.   8. Zijin Mining, 2.17 million ounces Zijin Mining's gold production increased by 20% year-over-year, making it China's largest publicly traded gold mining company and placing it among the top eight gold mining companies worldwide. The group continues to actively seek acquisitions to enhance its production capacity.   9. Kinross Gold, 2.15 million ounces In 2023, Kinross's production (including gold equivalent) increased by nearly 10% compared to the previous year. This Canadian mining company is set to add a new production source, with its Manh Choh project in Alaska scheduled for first production this month.   10. Freeport-McMoRan, 1.99 million ounces The U.S.-based Freeport-McMoRan saw its gold production grow by nearly 10% in 2023. Known for its copper operations, the company currently operates the Grasberg copper-gold mine in Indonesia, one of the largest gold mines in the world.   Honorable Mention: Solidcore Resources, 1.71 million ounces (gold equivalent) Previously known as Polymetal International, Solidcore Resources maintained stable gold equivalent production last year. Since facing U.S. sanctions, the group has been forced to sell most of its Russian assets, which accounted for about 70% of its production.   *Source: Mining.com

Copper is a crucial metal in various industries, including electronics, machinery, and light industry. With the depletion of copper sulfide ore reserves, attention has increasingly shifted to the development and utilization of copper oxide ores. These ores exhibit poorer floatability compared to copper sulfide ores, with significant variations depending on the form of copper present in the minerals and the composition of the gangue.   Copper oxide ores such as malachite, cuprite, and azurite generally have good floatability and are the primary focus in flotation processes. However, copper oxide ores are characterized by fine and unevenly distributed particles, which are highly hydrophilic, complicating the flotation process. The flotation methods for copper oxide ores are typically categorized into direct flotation and sulfide flotation, each requiring specific reagents to enhance efficiency.   Forms of Copper Oxide Minerals   1. Free Copper Oxide: These are copper oxide minerals that are not bound to gangue materials and are thus easier to float. They are soluble in cyanide solutions and can be effectively recovered using flotation techniques. 2. Bound Copper Oxide: These minerals are cemented with gangue materials like iron hydroxide, making them difficult to recover via flotation alone. They are not soluble in cyanide solutions and require more complex treatment.     Flotation Reagents for Copper Oxide Ore   Direct Flotation Collectors 1. Fatty Acid Collectors: These include fatty acids and their soaps, which are effective for ores with silicate gangue minerals and malachite-dominant copper-bearing minerals. Mixed fatty acids (C10-C20) are commonly used in industrial applications, often under the inhibition of phosphate and water glass.   2. Amine Collectors: Organic amine agents, such as cocoamine and laurylamine, are notable for their strong collection capacity and fast flotation speed. These collectors are effective for minerals like malachite and azurite but also have a tendency to collect gangue minerals, necessitating the use of gangue inhibitors like sodium alginate and polyacrylic acid.   3. Chelating Agent Collectors: These collectors, including imidazole and hydroxamic acid, exhibit strong collection capacity and good selectivity. They are particularly useful for difficult-to-float ores like chrysocolla. Chelating agents form hydrophobic chelates with metal ions on the surface of copper oxide, enhancing the flotation process when used with neutral oils.   Copper Oxide Flotation Activators 1. Sulfide Activators: Sodium sulfide, sodium hydrosulfide, and calcium sulfide are commonly used. Sodium sulfide is particularly prevalent, but its dosage must be carefully controlled to avoid inhibiting copper oxide flotation.   2. Amine Salt Activators: Compounds like ethylenediamine phosphate, triethanolamine, and ammonium salts enhance the adsorption of copper oxide, reducing the inhibitory effect of excess sodium sulfide and improving recovery rates.   3. Cyclic Organic Compound Activators: These include nitrogen, oxygen, and sulfur-containing compounds such as D2, D3, and 8-hydroxyquinoline. They are often used in conjunction with sodium sulfide to enhance recovery indices.     Practical Considerations   The flotation process for copper oxide ores is complex and requires careful selection and combination of reagents. Factors such as the specific mineral composition and the form of copper oxide present in the ore must be considered. Conducting thorough beneficiation tests on ore samples is essential to formulate an effective chemical system, ensuring optimal recovery and beneficiation indices.   In conclusion, the flotation of copper oxide ores involves a variety of reagents and methods tailored to the specific characteristics of the ore. By understanding the roles and applications of different collectors and activators, effective flotation systems can be developed to improve the recovery and grade of copper oxide minerals.   Y&X Beijing Technology Co., Ltd. is a dedicated provider of beneficiation solutions for metal mines, specializing in efficient and environmentally friendly reagents. With extensive experience in copper, molybdenum, gold, silver, lead, zinc, nickel, magnesium, rare metals like cobalt and palladium, and non-metallic ores like bismuth, fluorite, and phosphate, we offer customized solutions tailored to the specific nature of your ore and production conditions. Our goal is to ensure maximum benefits for our customers through advanced beneficiation methods and high-efficiency reagents. Y&X is committed to providing one-stop beneficiation solutions and looks forward to a successful partnership with you.  

Collector YX09510C is an innovative flotation reagent specifically designed to address the challenges of difficult multimetal sulfide ore flotation. This product stands out in the market due to its exceptional performance and unique properties that cater to the complex needs of sulfide ore processing.     Key Characteristics and Benefits   Highly Effective Collector: YX09510C is a light yellow to dark yellow transparent oily liquid known for its high efficiency in collecting sulfide ores. Its ability to promote bubble formation aids in the flotation process, enhancing the recovery of valuable minerals.   Selective Performance: While it excels in capturing difficult sulfide ores such as copper sulfide ore, copper-gold sulfide ore, and zinc sulfide ore, YX09510C demonstrates remarkable selectivity. It is particularly effective in scenarios where complex lead minerals with high silver content are present, making it ideal for environments where copper mineralization is secondary, and lead grades are low.   Improved Precious Metal Recovery: YX09510C significantly enhances the recovery rate of associated precious metals such as gold and silver. Its efficiency in extracting these valuable by-products adds substantial economic benefits to the mineral processing operations.   Excellence in Complex Lead Minerals: This collector shows outstanding performance in extracting complex lead minerals with high silver content, ensuring high recovery rates and optimal concentrate quality.   Economic Advantages: The use of YX09510C can significantly improve the recovery rate of mineral processing, translating to considerable economic benefits.   Minimal Activation of Pyrite and Magnetite: One of the standout features of YX09510C is its weak ability to capture pyrite and magnetite, ensuring that the primary focus remains on the desired sulfide minerals. This property is crucial for optimizing the purity and quality of the final concentrate.   Versatile Application: Suitable for a range of mining operations, YX09510C delivers exceptional selectivity and enhanced recovery rates, making it a versatile choice for various flotation processes. It provides excellent selectivity, improved recovery rates, and minimizes the activation of copper minerals.   User-Friendly: With a recommended dosage that varies based on the specific ore type and processing conditions, YX09510C is easy to integrate into existing flotation systems. Our experienced team is readily available to provide tailored solutions and technical support to ensure optimal performance.   In conclusion, Collector YX09510C is a highly effective and versatile flotation reagent that addresses the specific challenges associated with difficult multimetal sulfide ore flotation. Its unique characteristics and proven performance make it an invaluable asset for mining operations seeking to maximize recovery rates and economic returns. For customized solutions and technical support, our experienced team is always ready to assist you.  

  On June 27, Chemaf Resources Limited (CRL) announced that it has reached an agreement to sell the company, including its subsidiaries, to a wholly-owned subsidiary of Norin Mining Limited. This acquisition will provide Norin Mining with two copper-cobalt mining projects in the Democratic Republic of the Congo: Etoile and Mutoshi. The proposed transaction is expected to close in the fourth quarter of 2024, pending the fulfillment of customary closing conditions.   Chemaf SA, founded in 2001, is a prominent operator and developer of copper and cobalt projects in the DRC. Over the past two decades, Chemaf has produced more than 300,000 tonnes of copper and 55,000 tonnes of cobalt hydroxide from the Etoile mine. The future of Chemaf lies in the expansion of the Etoile mine (Etoile Phase II) and the development of the new greenfield Mutoshi mine, both of which are in the late stages of development. These projects have the potential to collectively produce over 75,000 tonnes of copper and 20,000 tonnes of cobalt hydroxide annually.   CRL holds 94.68% of Chemaf's shares, with the remaining 5% held by the DRC government. CRL was founded by Chairman Shiraz Virji and is headquartered in Dubai. It is a subsidiary of the Chemaf Group, which in turn is part of the Shalina Group.   Norin Mining, an established mining and trading company, has a diverse portfolio of base metal projects across the African continent, including two existing projects in the DRC: Comika and Lamikal. In 2023, Norin Mining generated $4.3 billion in revenue from its mineral-related activities.   Jeremy Meynert, Chairman Shiraz Virji's advisor and Chemaf Group's advisor, commented: "After a highly competitive international auction process, we are delighted to have signed a deal with Norin Mining. This transaction will allow CRL and Chemaf to meet their obligations to existing lenders and creditors. Importantly, Chemaf has found a new owner with the experience and determination necessary to manage Shiraz Virji's assets and complete the Etoile Phase II and Mutoshi projects. Despite the numerous challenges Chemaf has faced over the past 12 months, the resilience of our management team, the dedication of our employees and contractors, and the support of our suppliers have enabled us to continue production at the Etoile mine while seeking new capital to advance the Etoile Phase II and Mutoshi development projects. Ongoing production has given us the time to secure the best possible deal for all stakeholders."   Chemaf founder and Chairman Shiraz Virji stated: "For over 20 years, Chemaf has been a proud family-owned business. Our operations have brought significant economic and social benefits to the communities where our projects are located and to the DRC as a whole through job creation, community, environmental, and healthcare programs, and the payment of royalties and taxes. I am immensely proud and grateful for the efforts of our team in establishing Chemaf as a leading copper and cobalt producer in the DRC. I also appreciate the professionalism and commitment of the Norin Mining team towards this transaction. Norin Mining has a strong track record in mining operations and development, particularly in the DRC, making them an ideal choice to bring Etoile Phase II and Mutoshi into production. I wish them every success and am confident that under their leadership, Chemaf will continue to contribute significantly to the economic and social development of the DRC."     Strategic Assessment and Investment Process In recent years, Chemaf has undertaken a significant expansion of its Etoile mine in Lubumbashi, Katanga Province, while developing the large greenfield Mutoshi mine in Kolwezi, Lualaba Province. Despite substantial investment exceeding $600 million, additional funding is required to complete these projects. The decline in copper and cobalt prices, impacting cash flow from the existing Etoile mine, combined with inflationary pressures in the global mining industry, has resulted in a funding shortfall. Consequently, in August 2023, CRL initiated a strategic review led by Jeremy Meynert.   After a comprehensive review of various financing options, CRL decided to pursue an equity investment process to secure direct investment at the CRL level, including the potential sale of the company. The equity investment process began in September 2023, focusing on finding an investor with a strong track record in responsible mining operations and project development to complete the Etoile Phase II and Mutoshi projects.   The company received significant interest from investors worldwide, ultimately leading to the proposed transaction with Norin Mining.   Transaction Overview Norin Mining's subsidiary, Kingco, has signed a share purchase agreement with the Chemaf Group to acquire all of Chemaf Group's shares in CRL. Chemaf will remain a subsidiary of CRL. Kingco has also agreed to acquire Shiraz Virji's direct shares in Chemaf.   The DRC government has approved the sale of CRL, which will result in an indirect change of control of Chemaf. The transaction remains subject to customary closing conditions, including approvals from Chemaf's partner Gecamines SA in Mutoshi and Chinese regulatory authorities.   The transaction consideration will primarily be allocated to CRL and Chemaf's lenders and creditors, with major lenders having signed settlement agreements.

  Copper oxide ores are an important mineral resource, and due to the unique properties of oxide minerals, their flotation process is quite complex. Understanding the flotation methods of copper oxide ores and their mixed ores is essential for improving copper recovery rates and economic efficiency. This article will provide a detailed introduction to the conventional flotation methods for copper oxide ores and discuss the characteristics of non-ferrous metal oxide ores and their impact on the flotation process.   Characteristics of Non-Ferrous Metal Oxide Ores   1. Complex Structure: Non-ferrous metal oxide ores have a complex structure and fine-grained dissemination, making them difficult to liberate during fine grinding, which often leads to the formation of slimes. 2. Diverse Composition: These ores often contain multiple types of oxide minerals within the same deposit, resulting in significant differences in floatability. 3. High Mud and Soluble Salts Content: These ores typically contain a large amount of mud and soluble salts. 4. Variable Properties: The properties of non-ferrous oxide ores vary greatly between different deposits, including differences in the degree of oxidation and ore characteristics.   Due to these characteristics, the flotation process of oxide ores is relatively difficult. Common types of copper oxide minerals include malachite, azurite, followed by chrysocolla and cuprite.     Flotation Methods for Copper Oxide Ores and Their Mixed Ores   1. Sulphidization Flotation: This is a common and straightforward process. Any oxidized copper ore that can be sulphidized can be processed using this method. Sulphidized oxidized minerals can be floated with xanthate collectors. The amount of sodium sulfide used for sulphidization should be controlled based on the amount of raw ore. Sodium sulfide and other sulphidizing agents should be added to the slurry in batches without prior mixing, as the sulphide film formed is unstable and can detach under intense agitation. The sulphidization rate increases as the slurry pH decreases. When the slurry contains a lot of mud, a dispersant such as sodium silicate should be added. Collectors like butyl xanthate or a combination of black reagents can be used for collection. The slurry pH should be maintained around 9, and if it drops too low, lime should be added for adjustment.   2.Organic Acid Flotation: This method can be used for the flotation of malachite and azurite. When gangue minerals are not carbonate minerals, this method can be used to treat non-ferrous metal oxide ores. Otherwise, the flotation selectivity is lost. If the gangue minerals contain a lot of floatable iron and manganese minerals, the flotation selectivity is lost, affecting the flotation indices. When using organic acid collectors, gangue mineral depressants (such as sodium carbonate, sodium silicate, and phosphates) and pH regulators should be added. Some concentrators also use a combined flotation method of sulphidization and organic acid flotation, first floating sulphide copper and part of the oxidized copper, then using organic acid to float the remaining oxidized copper.   3. Leaching-Precipitation-Flotation: This method is used when sulphidization and organic acid flotation are ineffective. Oxidized copper minerals dissolve easily and can be leached with sulfuric acid. The dissolved copper can be precipitated with iron powder, and the precipitated copper can then be floated. This method requires the ore to be ground to liberation, depending on the mineral particle size. A dilute sulfuric acid solution is used for leaching, with the amount adjusted based on ore properties. For difficult-to-leach ores, heating may be used to improve leaching efficiency. The entire flotation process is conducted in an acidic medium, and cresylic acid or di-xanthate can be used as collectors for copper.   4. Ammonia Leaching-Sulphidization-Flotation: For ores with a high content of basic minerals, acid leaching increases reagent consumption and production costs. Therefore, concentrators generally use ammonia leaching. After fine grinding, sulfur powder is added for ammonia leaching. Ammonia and carbon dioxide react with copper ions in oxidized copper ores, forming new sulphide copper particles, which are then floated. The pH of the slurry is maintained at 6.5-7.5. Standard sulphide copper flotation reagents are used, and the ammonia generated during the process should be promptly recovered to prevent environmental pollution.   5. Separation-Flotation: The ore of suitable particle size is mixed with coal powder and salt, then subjected to chloridizing reduction roasting at 700-800°C. Chloridized copper evaporates and is reduced to metallic copper, adsorbed onto coal particles, which are then floated to obtain the concentrate. This method is mainly used for refractory copper oxide ores and ores with high malachite and cuprite content, and it is particularly effective for ores with a high mud content.   6. Mixed Copper Ore Flotation: The flotation process for these ores should be determined based on beneficiation tests. The flotation process can involve floating sulphide and oxidized minerals together, or first floating sulphide minerals, followed by floating oxidized minerals from the tailings. The conditions for floating oxidized and sulphide copper minerals are similar, but as the content of oxides decreases, the amounts of sodium sulfide and collectors should be reduced accordingly.   In summary, there are many flotation methods for copper oxide ores, each with its applicable ore types and process characteristics. Choosing and optimizing these methods based on the specific ore properties and flotation indices can effectively improve the recovery rate and concentrate grade of copper oxide ores, maximizing economic benefits.     Y&X Beijing Technology Co., Ltd. is a dedicated provider of beneficiation solutions for metal mines, specializing in efficient and environmentally friendly reagents. With extensive experience in copper, molybdenum, gold, silver, lead, zinc, nickel, magnesium, rare metals like cobalt and palladium, and non-metallic ores like bismuth, fluorite, and phosphate, we offer customized solutions tailored to the specific nature of your ore and production conditions. Our goal is to ensure maximum benefits for our customers through advanced beneficiation methods and high-efficiency reagents. Y&X is committed to providing one-stop beneficiation solutions and looks forward to a successful partnership with you.  

Introducing Mining Collector YX3418A: The Effective Solution for Sulfide Ore Beneficiation   Collector YX3418A is an innovative and highly effective beneficiation agent designed to enhance the flotation process of various sulfide ores. This product boasts exceptional features and advantages that make it an ideal choice for mineral processing industries. Here, we delve into the key characteristics and benefits of YX3418A, highlighting its application across different ore types.   Key Features and Advantages of Collector YX3418A High Active Substance Content: YX3418A contains over 90% active beneficiation substances, ensuring superior performance in ore processing. Excellent Collecting Power: This collector exhibits strong collecting capabilities, significantly improving the enrichment ratio of metals. Versatile Application Conditions: It performs effectively under both acidic and alkaline conditions, providing flexibility in various processing environments. Weak Foaming Properties: YX3418A generates minimal foam, making it easier to manage during the flotation process. Safe and Non-Hazardous: This product is non-hazardous, ensuring safe handling and usage. Ease of Use: YX3418A is designed for ease of use, requiring no preparation before application. It should be added directly to the flotation process. Cost-Effective and High Performance: YX3418A delivers almost the same process indicators as leading chemicals in the market but with added benefits. It is a cost-effective solution that maintains high performance standards while being safer to handle and use. Flexible Utilization: This product can be utilized alone or in combination with xanthates, offering flexibility in optimizing flotation processes.     Applications of Collector YX3418A in Mineral Processing YX3418A is specifically designed to enhance the recovery and grade of various sulfide ores, including copper sulfide, copper-zinc sulfide, lead-zinc sulfide, and copper-gold sulfide ores. Here’s how YX3418A works with each ore type:   Copper Sulfide and Copper-Zinc Sulfide Ores: YX3418A significantly improves the grade and recovery rate of copper concentrate. Its strong collecting power ensures higher yields of valuable metals. Copper-Gold Sulfide Ores: When used in copper-gold sulfide ore flotation, YX3418A enhances the recovery rate of precious metals such as gold and silver, increasing the overall value of the extracted concentrate. Lead-Zinc Sulfide Ores: In lead flotation, YX3418A demonstrates strong collecting power for lead, markedly improving lead recovery rates during the flotation process.   Conclusion Collector YX3418A stands out as a powerful, versatile, and safe flotation chemical for the beneficiation of sulfide ores. Its ability to improve metal recovery rates, enhance concentrate grades, and operate effectively in diverse conditions makes it an good assistant for mineral processing industries. By choosing YX3418A, we can achieve ideal results and optimize our beneficiation processes efficiently.   Y&X Beijing Technology Co., Ltd. is a dedicated provider of beneficiation solutions for metal mines, specializing in efficient and environmentally friendly reagents. With extensive experience in copper, molybdenum, gold, silver, lead, zinc, nickel, magnesium, rare metals like cobalt and palladium, and non-metallic ores like bismuth, fluorite, and phosphate, we offer customized solutions tailored to the specific nature of your ore and production conditions. Our goal is to ensure maximum benefits for our customers through advanced beneficiation methods and high-efficiency reagents. Y&X is committed to providing one-stop beneficiation solutions and looks forward to a successful partnership with you.

Contents: ・Types of Carbonaceous Materials in Gold Ores ・Pre-treatment Methods for Carbonaceous Gold Ores ・How to Enhance Gold Leaching? ・Conclusion   Gold extraction from carbonaceous gold ores, which are prevalent in black (or carbonaceous) rock series and sedimentary rock series, presents significant challenges due to the presence of organic carbon. This type of ore has been recognized since the early 20th century for its detrimental impact on cyanide leaching. Carbonaceous gold ores are typically defined as those containing organic carbon that interacts with gold cyanide complexes, making conventional cyanide leaching ineffective. Some of the most famous carbonaceous gold deposits include the Carlin gold mine in the United States and the Muruntau gold mine in Uzbekistan, with significant deposits also found in Canada, Australia, New Zealand, and China.   Studies have shown that carbonaceous materials in primary ore deposits, especially those in sedimentary rock-hosted gold deposits, play a crucial role in their formation. When organic carbon compounds exceed 0.2%, they significantly hinder the cyanide leaching process, leading to the classification of such ores as carbonaceous gold ores. Besides the harmful effects of carbonaceous materials, these ores also exhibit mineralogical characteristics typical of refractory ores, such as gold encapsulation in sulfides or clay minerals. In many carbonaceous gold ores, gold coexists with pyrite or other sulfides. In certain finely disseminated and metamorphic rock-type gold deposits, carbonaceous material is a primary gold carrier.   Types of Carbonaceous Materials in Gold Ores Carbonaceous materials in gold ores are categorized into three types: elemental (solid) carbon, polymeric hydrocarbon mixtures, and organic acids similar to humic acids, collectively referred to as organic carbon. The presence of carbonaceous material in the ore is generally attributed to the introduction of small amounts of organic matter (potentially including hydrocarbons) during hydrothermal activity. Elemental carbon occurs in forms such as graphite, amorphous carbon, and poorly crystallized pseudo-graphite (a mixture of amorphous and graphite structures), primarily composed of carbon and generally gold-free. Solid carbon, particularly amorphous carbon, exhibits activated carbon-like properties during cyanide leaching, adsorbing dissolved gold-cyanide complexes. The organic components of carbonaceous ore include long-chain hydrocarbons that do not interact with gold cyanide complexes and organic acids that form complexes with gold-cyanide salts. Chinese researchers classify organic carbon in finely disseminated gold ores into chloroform-soluble organic matter and insoluble organic matter (kerogen).   Pre-treatment Methods for Carbonaceous Gold Ores Pre-treatment methods for carbonaceous gold ores include removing or decomposing the carbonaceous material or rendering it inactive during cyanide leaching. The latter approach eliminates the harmful effects of carbonaceous material on cyanide leaching without destroying the carbonaceous content of the ore, and therefore does not liberate gold initially encapsulated in carbonaceous materials.   Roasting is the most commonly used method for the pretreatment of carbonaceous gold ores. By roasting these ores in the air, the gold locked within the minerals can be effectively exposed, eliminating the adsorption of gold cyanide complexes by carbonaceous matter, and thereby successfully increasing the gold leaching rate. Currently, the primary focus in the development and utilization of carbonaceous gold mines is on the single recovery of gold, rather than the effective comprehensive recovery or utilization of other components. With the high energy consumption and the need to treat SO2 emissions, the cost pressures associated with the conventional roasting process are becoming increasingly prominent. Due to its strong applicability, simple technological process, and remarkable recovery rates, the roasting method will continue to be widely used in the industrial production of carbonaceous gold mines for a long time to come. Therefore, increasing the comprehensive recovery and utilization rate of carbonaceous gold ores and reducing the cost of waste gas treatment are two key future development directions for roasting pretreatment technology.   How to Enhance Gold Leaching? To address the challenges posed by conventional cyanide leaching, Y&X Beijing Technology Co., Ltd. has developed the eco-friendly gold leaching reagent YX500. This innovative reagent effectively replaces sodium cyanide and can be used in various gold beneficiation and smelting processes. YX500 offers numerous advantages, including low toxicity, environmental friendliness, high recovery rates, stability, and ease of operation, making it a superior alternative for gold extraction.   Conclusion In summary, the presence of carbonaceous materials in gold ores presents significant challenges to gold extraction using conventional cyanide leaching methods. To enhance gold leaching efficiency, it is crucial to minimize the impact of carbon on the process. Additionally, addressing environmental and health concerns associated with cyanide use is essential. YX500 by Y&X Beijing Technology Co., Ltd. offers an effective and environmentally friendly alternative to sodium cyanide, enhancing gold recovery while reducing environmental and health risks.