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What are the copper flotation collectors?

Xanthate is the most important collector in copper sulfide flotation and can be used in combination with other selective collectors. Butyl xanthate has high surface activity, and ethyl xanthate has good selectivity. When butyl xanthate and ethyl xanthate are used in combination as mixed collectors, the technical index grade and recovery rate obtained are kept at a high level. . Black medicine is the second most important collector of sulfide ores. In production practice, black medicine has a weaker ability to collect sulfide ores and a slower flotation rate. In contrast, black medicine is more selective for iron sulfide minerals than xanthate. A third important class of collectors are thiocarbamates. Thiocarbamate has higher selectivity and stability than xanthate and black drug, but it is generally considered that it is not enough for strong collection of copper sulfide minerals. The selectivity of thiocarbamates for iron sulfide minerals is higher than that of xanthate and nigra. In the flotation of polymetallic sulfide ores, methylthiocarbamate has a very effective collection performance for copper and zinc minerals. In the flotation of a copper sulfide ore, ethyl xanthate and amyl xanthate are used in combination. Under the same dosage of chemicals, the grade of copper concentrate is basically unchanged, and the copper recovery rate is 3% higher than that of using one of the collectors alone. In the combination of terpene dithiol and butyl xanthate, 50% of xanthate can be saved by flotation of disseminated copper sulfide ore. In production, the combination of xanthate and black medicine can be used as a collector of copper, which has obvious effects on improving the recovery rate of useful minerals, reducing the dosage of flotation agents, reducing the cost of beneficiation, and even reducing or replacing toxic chemicals. What are the latest special effect collectors for copper mine flotation? Other common collectors, such as: xanthate formate can be mixed in acidic and neutral pulp for flotation of sulfide minerals; mercaptobenzothiazole can float gold-bearing ores in acidic medium or in neutral medium It is mixed with other collectors to flotate sulfide minerals; mercaptans and disulfides are sometimes used as auxiliary collectors to enhance the hydrophobicity of mineral surfaces. Dithiophosphite has stronger collecting ability than black medicine, and can sometimes replace xanthate, but with better selectivity; trithiocarbonate has stronger collecting ability than xanthate, and its neutral The amount used in the pulp is lower than that of xanthate. When the copper grade of the raw ore is above 2.0%, the use of ester-105 collector and terpineol oil foaming agent can achieve a good copper-sulfur separation effect.

2022

07/01

Glencore's first-quarter thermal coal production up 22% year-on-year, full-year production target unchanged

Glencore's first-quarter thermal coal production up 22% year-on-year, full-year production target unchanged   On April 28, miner Glencore released its quarterly operation report showing that from January to March this year, the company’s thermal coal output was 25.5 million tons, an increase of 22% from 20.9 million tons in the same period last year. The quarter's 23.5 million tonnes was up 9%. In the first quarter, Glencore Australia's thermal coal output was 14.8 million tons, of which export thermal coal output was 13.4 million tons, a year-on-year increase of 12%; domestic thermal coal output was 1.4 million tons, flat year-on-year. During the same period, the company's South African thermal coal output was 4.5 million tons, of which the export thermal coal output was 3.4 million tons, a year-on-year decrease of 15%; the domestic thermal coal output was 1.1 million tons, a year-on-year decrease of 35%. The decline in South African thermal coal production was mainly due to the extreme rainfall weather and the limitation of local railway capacity, which forced the company to reduce coal mine capacity in South Africa. In the first quarter, Glencore's 100% stake in Colombia's Cerrejon coal mine produced 6.2 million tons, a 2.4-fold increase year-on-year. According to the same basis, the output of the Cerrejon coal mine in the first quarter increased by 800,000 tons compared with the same period of the previous year. From January to March, Glencore's total coal output was 28.5 million tons, an increase of 16% from 24.5 million tons in the same period last year. In 2022, the company's coal production target remains unchanged at 116-126 million tons.

2022

05/06

This year, the national energy output will reach about 4.41 billion tons of standard coal

The "Guiding Opinions on Energy Work in 2022" (hereinafter referred to as the "Guiding Opinions") recently issued by the National Energy Administration proposed that the total national energy production will reach about 4.41 billion tons of standard coal, about 200 million tons of crude oil, and 214 billion cubic meters of natural gas. about. To ensure sufficient power supply, the installed power capacity will reach about 2.6 billion kilowatts, the power generation capacity will reach about 9.07 trillion kilowatt-hours, the new peak power generation capacity will be over 80 million kilowatts, and the power transmission capacity of "West-East Power Transmission" will reach about 290 million kilowatts. The "Guiding Opinions" put forward that to ensure the security and stable supply of energy as the primary task, focus on enhancing the domestic energy production guarantee capacity, and earnestly hold the energy job in our own hands. On the one hand, strengthen the guarantee capability of coal-fired power generation. Yang Kun, executive vice chairman of the China Electricity Council, said that although the proportion of domestic coal-fired power installed capacity has dropped to less than 50%, it still accounts for about 60% of the total power generation, and it is still the main power source for the country's power supply. The "Guiding Opinions" proposes to scientifically plan and construct advanced coal-fired power units, arrange a certain scale of supporting power sources to ensure the safety of power supply and regulated power sources to promote new energy consumption as needed, maintain a reasonable margin of installed capacity, and strictly implement coal consumption for new projects. and other latest technical standards. In addition, this year, on the premise of ensuring stable power supply and meeting power demand, we will actively promote the "three reforms and linkages" of coal-fired power units for energy-saving and consumption-reducing transformation, heating transformation and flexibility transformation. On the other hand, the Company continued to enhance its oil and gas exploration and development efforts. The "Guiding Opinions" clearly states that the "14th Five-Year Plan" and the implementation plan for oil and gas exploration and development will be implemented, the annual exploration and development investment and workload will be consolidated, the development and application of advanced oil and gas extraction technologies will be accelerated, the momentum of increasing reserves and production will be consolidated, and the 2022 plan will be resolutely completed. The output of crude oil has returned to the established target of 200 million tons, and the output of natural gas has continued to increase steadily. At the same time, accelerate the green and low-carbon transformation of energy. The relevant person in charge of the National Energy Administration said that the "14th Five-Year Plan" is a critical period and a window period for carbon peaking, and green and low-carbon development of energy is the key. The "Guiding Opinions" require that the transformation of the energy structure be steadily promoted. The proportion of coal consumption has steadily declined, the proportion of non-fossil energy in total energy consumption has increased to about 17.3%, the new electric energy has replaced about 180 billion kWh of electricity, and the proportion of wind power and photovoltaic power generation in the total electricity consumption has reached about 12.2% . In the development of wind power and photovoltaics, the "Thousands of Towns and Tens of Villages Action to Harness the Wind" and the "Thousands of Households Shine Light Action" were organized according to local conditions. Make full use of the land and roof resources of oil and gas mining areas, industrial and mining areas, and industrial parks to develop distributed wind power and photovoltaics. At the same time, the construction of major hydropower and nuclear power projects will be promoted in an orderly manner, and new models of new energy industries will be actively developed. 

2022

04/02

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