[Introduction]: Flotation is widely used in gold processing. In China, 80% of rock gold is processed by flotation. The flotation process maximizes the enrichment of gold into sulfide minerals. The tailings can be directly discharged. Flotation in gold mines has low beneficiation costs.
[Application]: Gold Flotation Process is used to process fine gold, sulfide gold-containing quartz ore, multi-metal gold-containing sulfide ore, and carbon-containing ore.
Gold mineral flotation normally adopts one stage grinding-flotation process, but stages grinding and flotation for ore with uneven distribution.
For the gold wrapped in sulfide minerals, sulfide ore reaches monomer dissociation; but for the gold with gangue, grinding fineness should reach gold monomer dissociation. The grinding fineness of minerals is determined by a test.
Flotation for large density and coarse particle needs thick pulp, whereas for small density and fine particle, needs dilute pulp.
In addition to the grinding fineness, process conditions of gold flotation also include slurry concentration, reagent dosage, aeration quantity, and flotation time.