Stainless Steel Cyanidation
Cyanidation is the process of using cyanide to chemically leach gold from mined ore or rock. Cyanide-based solutions have been used for over a century to extract precious metals from gold ore. Cyanidation is sometimes referred to as the Heap Leach Process” due to its use on low-grade ore. Most often, the actual process takes place on a large scale at either an onsite plant or in a large processing facility.
The use of stainless steel in the process of cyanidation offers many advantages. Stainless steel is more resistant to corrosion than conventional materials and can last longer, allowing cyanide-based solutions to be used more effectively. Stainless steel is also an excellent conductor of heat and electricity, allowing for more efficient and controlled heating of cyanide-based solutions. Additionally, stainless steel is easier to clean than other materials, allowing for a more efficient leaching process.
When using stainless steel for cyanidation, the process begins with the ore being crushed into small pieces, usually smaller than a quarter of an inch. The ore is then placed in tanks and a mixture of sodium cyanide, oxygen, and water is introduced. This solution is then heated to a temperature of about 90°C, which helps to dissolve and leach out some of the gold. The gold is then separated from the solution and recovered.
The use of stainless steel in the cyanidation process is advantageous due to its longevity, resistance to corrosion, and efficient heat transfer. Additionally, stainless steel can be used in a variety of shapes and sizes, allowing for a more tailored approach to the leaching process. Finally, the use of stainless steel is more cost-effective than other alternatives and allows for a faster, more efficient process.
Overall, the use of stainless steel in the process of cyanidation offers many advantages. This efficient and cost-effective solution can help to create a more efficient and effective leaching process for mining operations. Furthermore, the use of stainless steel in the process has been proven to be a safe and reliable method for recovering gold from ore. As the industry grows, it is likely that the use of stainless steel in cyanidation will continue to be a popular choice.
