Sodium Cyanide for Gold Leaching

【Sodium Cyanide Substitute】
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Why need Sodium Cyanide Substitute?

According to statistics, more than 80% gold mines in the world use gold cyanidation process, while 85% of them use sodium cyanide to extract gold. However, cyanide is a highly poisonous and dangerous chemical, and any accidents in transportation storage and usage will resuilt in serious consequences. Therefore, many countries and states have explicitly banned or restricted the use of sodium cyanide in gold extraction and the global gold extraction industry urgently needs an environmental gold extraction agent that can completely replace cyanide.

Sodium Cyanide VS Eco-friendly Gold Leaching Chemical

Common Sodium Cyanide Replacement

CNLITE eco-friendly gold leaching reagent is a kind of leaching reagent that can replace sodium cyanide without changing the original equipment and cyanide process. It can be used directly for gold ore beneficiation and refining, commonly in the gold heap leaching process, pool leaching process, CIP, CIL, etc...

100% Environmental-friendly
High Leaching Rate
Low-toxicity
Easy to Transport
100% Replacement of Sodium Cyanide
Stable Performance
Faster Recycling
Suitable for All Gold Cyanidation Plants

Gold Leaching Chemicals (Large Package)
Gold Leaching Chemical (Test Sample)
Gold Leaching Chemical (Application)

【Gold Cyanide Leaching Process】
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Gold CIL Process

【Principle】

Gold CIL process (carbon in leach) refers to add activated carbon to the pulp, leach and adsorb gold in the same time. It is an effective way to recover gold, and can reach 99% recovery rate.

【Process】

1. Crushing and screening
2. Grinding and classification
3. Agitation
4. Cyanide leaching and adsorption
5. Desorption electrowinning
6. Purified ingot

【Cases】

Gold CIL Plant in China
Gold CIL Plant in Sudan
Gold CIL Plant in Zimbabwe

Gold CIP Process

【Principle】

Gold CIP (carbon in pulp) process refers to an unfiltered cyanide carbon slurry process that uses activated carbon to directly adsorb and recover gold from cyanide ore pulp. Generally, carbon adsorption is performed after cyanide leaching is completed.

【Process】

1. Crushing and screening
2. Grinding and classification
3. Agitation and cyanide leaching
4. Carbon adsorption
5. Desorption electrowinning
6. Purified ingot

【Cases】

Gold CIP Plant in Ghana
Gold CIP Plant in Malaysia
Gold CIP Plant in Tanzania

Gold Heap Leaching Process

【Principle】

Gold heap leaching refers to pile up low-grade gold ore or flotation tailings on the bottom mat material, and then spray it through the sodium cyanide solution to dissolve the gold in the ore to form a gold-containing pregant liquid and finally refine to recover gold.

【Process】

1. Crushing and screening
2. Set heap leaching site
3. Heap spraying and cyanide leaching
4. Carbon adsorption
5. Zinc powder displacement device

【Cases】

Gold Heap Leaching Plant in South Africa
Gold Heap Leaching Plant in Suriname
Gold Heap Leaching Plant in Zimbabwe

Gold Vat/Tank Leaching Process

【Principle】

Gold heap leaching refers to pile up low-grade gold ore or flotation tailings on the bottom mat material, and then spray it through the sodium cyanide solution to dissolve the gold in the ore to form a gold-containing pregant liquid and finally refine to recover gold.

【Process】