The YX-DS101 Depressant Can Completely Or Partially Replace Lime.

YX-DS101 is a high-efficiency depressant for pyrite and pyrrhotite, offering an environmentally friendly alternative to conventional lime-based depression in sulfide ore flotation.

It is particularly suitable for processing copper ore, lead-zinc ore, and copper lead-zinc ore. Under low-alkaline or non-alkaline conditions, YX-DS101 effectively suppresses the formation of pyrite and pyrrhotite while exhibiting minimal depressant effects on valuable minerals such as chalcopyrite, galena, and sphalerite. Notably, it can fully or partially replace lime in the flotation process.

As resource utilization rates increase, ore properties are becoming more complex and ore dressing technical difficulty continues to rise. Complex polymetallic sulfide ores feature variable original ore properties and close symbiotic relationships with fine-grained intergrowth—especially between copper and sulfur minerals, whose similar properties make separation extremely difficult.

Currently, the lime method is the most widely used approach for inhibiting pyrite. While it achieves good separation and high copper concentrate grade and recovery, the high-alkali medium introduces unavoidable defects in traditional processes:

• Lime exerts varying degrees of depression on copper, sulfur, gold, silver, and other minerals, hindering further improvement of copper flotation indices—especially comprehensive recovery of associated gold and silver.
• Sulfur in copper tailings is strongly inhibited, requiring activators for sulfur recovery, which causes serious resource waste and increases flotation costs.
• Large-scale industrial use of lime readily causes plugging and scaling, and corrodes equipment.
• Beneficiation wastewater from high-alkalinity processes incurs high treatment costs.

Developing a new, environmentally friendly, and safe pyrite depressant has therefore become imperative—aligning with national energy-saving and environmental protection policies while solving the high-alkalinity wastewater problem for enterprises.

When introduced into the slurry, YX-DS101 reacts with the surface of pyrite to form a stable complex. This renders the pyrite surface hydrophilic and prevents its adsorption with bubbles. As a result, treated pyrite cannot enter the flotation foam layer and instead becomes a foam product, facilitating effective separation of pyrite from the desired target minerals.

YX-DS101: High-efficiency flotation depressant for pyrite and pyrrhotite

• Background: More than 40 years of mining industry experience.
• Product: Patented products specially developed for complex, difficult mineral ores.
• Technology Service: Formula adjustment and product model recommendation based on different application environments.
• Samples: Samples provided for testing.