Cyanide is widely used in gold mining for ore leaching. Proper treatment of cyanide-containing wastewater is essential for environmental protection.

Cyanide in Mining

Cyanide leaching dissolves gold from ore. Process wastewater contains free cyanide, weak acid dissociable (WAD) cyanide, and metal-cyanide complexes.

Cyanide Treatment Methods

Natural Degradation

Tailings storage facility (TSF) storage allows natural cyanide breakdown by sunlight and oxidation. Suitable for lower concentrations.

INCO Process

SO2/air process oxidizes cyanide to cyanate, which is less toxic. Widely used for gold mine wastewater.

Hydrogen Peroxide Treatment

Direct oxidation with H2O2 for rapid cyanide destruction. Suitable for batch or continuous applications.

Cyanide Recovery

Acidified cyanide recovery systems can regenerate cyanide for reuse, reducing costs and environmental impact.

Regulatory Requirements

Strict limits on free cyanide and WAD cyanide in discharge. International Cyanide Management Code certification may be required.

Feiran EP Mining Solutions

We supply cyanide destruction equipment and complete wastewater treatment systems for mining operations.

Email: sale@yixingenviroequipment.com