Chalcopyrite flotation process

1. Full priority flotation

Full priority flotation of chalcopyrite can inhibit associated minerals such as pyrite by adding lime inhibitors. Although this method can achieve good flotation effects, However, the consumption of lime is large, and at the same time, it may also reduce the grade of copper concentrate and the recovery rate of copper and associated gold, silver, molybdenum and other metal minerals. Another method is to flotate chalcopyrite under neutral to weakly alkaline conditions by using agents with high selectivity for chalcopyrite.

Full-priority flotation is suitable for processing simple components, not many types of recoverable useful minerals, large flotation differences between useful minerals, or their symbiotic minerals can be well suppressed and have no yellowing effect. The flotation of copper ore has no obvious effect on the ore.

2. Partial priority-partial mixed flotation

Partial priority-mixed flotation method is to quickly flotate copper ores that are easy to float, and then mix and flotate copper. The mixed concentrate with other useful minerals is then flotation separated, and the copper concentrate is combined or processed separately according to the actual situation.

This method is suitable for treating part of the chalcopyrite present in the ore that is easy to float. It can be preferentially floated out when the grinding fineness is not very high to achieve fast and early copper recovery. , the ore that is more difficult to flotation can be recovered together with other minerals using a collector with strong collection performance when the part is reground or no longer ground.

3. Mixed flotation

The mixed flotation process is to first flotate chalcopyrite and other useful minerals present in the ore, and then use preferential flotation to suppress other minerals. process to obtain qualified copper concentrate.

This method is suitable for processing chalcopyrite ore with low raw ore grade and simple ore properties. It has low grinding cost and small amount of flotation reagents.

4. Equal flotation

The sorting sequence of the equal flotation method is not based on the separation of minerals, but on the basis of floatability. , this flotation process usually does not require the addition of media adjusters and only relies on the natural floatability of minerals. The chalcopyrite mineral with good floatability can float naturally without being affected by inhibitors. At the same time, it avoids the useful minerals affected by the activator from floating together with chalcopyrite, which consumes a lot of chemicals and equipment for mineral flotation. question of choice.

Etc. flotation is suitable for processing polymetallic chalcopyrite ores.