Nickel ore flotation process

1. Priority flotation (partial priority) flotation process

The priority (partial priority) flotation process of copper-nickel sulfide ore is to first select copper (or other impurity ores), and then select copper into Separate concentrate, then select nickel minerals, and then directly obtain copper concentrate with lower nickel content.

This process is mainly suitable for processing copper-nickel minerals when the copper content is higher than the nickel content.

2. Mixed flotation process

The mixed flotation process is to simultaneously float out the copper and nickel minerals in the ore. , and then separate the copper concentrate with lower nickel content and the nickel concentrate containing copper from the mixed copper-nickel concentrate. The floating copper-nickel concentrate can be directly smelted into high matte nickel, and the high matte nickel is floated. Choose separation.

This process is mainly suitable for copper-nickel minerals containing less copper than nickel.

3. Mixing-preferential flotation process

Mixed-preferential flotation process is the same as copper mixed flotation. Select first. Mixed copper and nickel concentrate minerals, the copper concentrate is selected first from the mixed concentrate, and the nickel ore is selected for smelting and separation. If the floatability of nickel in the mineral is poor, after copper-nickel mixed flotation, the nickel ore with poor floatability can be further recovered from the tailings.

It should be noted that when choosing floatation of copper-nickel sulfide ore In the process of beneficiation, it is better to allow copper to enter the nickel concentrate than to allow nickel to be lost during the copper beneficiation process, because the nickel in the copper concentrate is lost during the smelting process, and the smelting of nickel concentrate China Copper can continue to be recycled.