Flotation is a common type of rock gold ore processing in gold concentrators, and is often used to process gold-bearing sulfide minerals with high floatability. The flotation process can enrich gold into sulfide minerals to the greatest extent, tailings can be directly discarded, and the beneficiation cost is low.
The gold flotation process is suitable for the treatment of sulfide gold-bearing quartz vein ore with fine gold particles and high floatability, polymetallic gold-bearing sulfide ore and carbon (graphite) ore, etc.
Gold ore flotation process
The flotation of gold minerals generally adopts a one-stage grinding-flotation process. For ores with uneven particle size, a staged grinding-flotation process can be used.
Grinding fineness requirements of gold ore
The requirement of gold ore grinding fineness, generally speaking, for gold encapsulated in sulfide minerals, only the sulfide ore monomer needs to be dissociated, but the grinding fineness of gold connected with gangue needs to reach the gold monomer. dissociate. At the same time, the grinding fineness of a certain mineral is determined by experiments.
Gold ore flotation pulp concentration requirements
The principle of gold ore flotation is: for flotation of minerals with high density and coarse particle size, thicker pulp is often used; on the contrary, when flotation of small density, fine particle size and slime, thinner pulp is used, and thicker pulp is used for coarse flotation. The ore pulp can ensure a higher recovery rate, and a thinner concentration is used for selection, which is conducive to improving the quality of the concentrate.
Other process conditions
In addition to grinding fineness, the process conditions affecting gold flotation also include pulp concentration, flotation reagent dosage, aeration amount, flotation time, etc., which need to be determined by experiments. In general gold ore flotation process, the flotation reagents that need to be used are: collector, activator, foaming agent, etc. Collector is used to promote gold floating, activator is to increase the floating speed of gold ore, foaming agent is to increase the number of flotation bubbles.
1. Simple workflow, easy operation and low maintenance cost.
2. It is more convenient and efficient to process ore with high impurity content.
3. Compared with other schemes, the output is increased, and the finished product effect is remarkable.
4. It is more suitable for processing sulfide gold-bearing quartz vein ore with fine gold particles and high floatability, polymetallic gold-bearing sulfide ore and carbon-bearing ore, etc.