Metal flotation process-- polymetallic ore flotation process principle

Polymetallic ore flotation refers to two or more useful mineral metallic ore flotation, separation process. It usually has preferential flotation, mixed flotation first, then separating flotation and combined priority and mixed flotation. Just like lead-zinc mine has lead and zinc in preferential flotation and lead-zinc mixed floating farther mixed concentrate after grinding mill (or no longer) again the separation flotation of lead concentrate and zinc concentrate. Others, such as copper, lead and zinc, iron sulfide polymetallic ore, the flotation process in general lead first preferential flotation of copper, copper lead separation, selective flotation tailings of copper lead zinc and sulphur mixing flotation separation and zinc sulfide or ordinal preferential flotation zinc, sulfur, zinc concentrate, sulfur concentrate.Some ore available mineral flotability use selective collector priority to select the solution from the part of the mineral, and then mixed flotation and flotation separation. Process for grinding process, again according to the condition of mineral dissociation.

 

The advantages and disadvantages of preferential flotation and mixed flotation are as below:

 

(1) Grinding fineness is directly mixed flotation preferential flotation of coarse, grinding cost can be saved.

 

(2) The dosage of mixed flotation of flotation machine is less than preferential flotation, flotation reagents also save some.

 

(3) Preferential flotation production operation more easily, easy to achieve concentrate grade. And the mixed flotation separation flotation, preferential floatation in production operation more difficult.

 

The above are the general advantages and disadvantages comparation, polymetallic separation process must carry on the test, the design of priority, comparing the priority flotation and mixed flotation designing scheme before selection.