Which Ores Need To Be Concentrated By Flotation Process

Gold Ore flotation

Flotation is a key process in extracting gold from certain types of ore. It is very suitable for processing gold-containing sulfide ores with fine gold particles and good floatability. These deposits contain gold that is difficult to extract through traditional methods because it is associated with other minerals such as pyrite or arsenopyrite. However, flotation can separate these minerals from the gold, making them easier to extract and process.

Gold deposits in sedimentary rocks also often require flotation to be effectively extracted. These deposits are formed by the accumulation of mineral-rich sediments over time, resulting in complex ore compositions that require separation processes such as flotation. By using froth flotation technology to selectively separate valuable components from ore, miners can increase overall recovery rates and maximize production of precious metals such as gold.

The presence of organic carbon and other impurities can sometimes affect the flotation process, resulting in lower recovery rates. In some cases, pretreatment methods such as roasting or biological oxidation are required to improve the floatability of gold ore. For “refractory gold ores” that cannot be directly treated by mercury amalgamation or cyanide, a combined process including flotation is also required. The use of flotation machines in gold mining ensures high recovery rates and allows the processing of low-grade ore, which is more economical.