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Pb-Zn ore dressing process

Pb-Zn ore divides into sulfide Pb-Zn ore and oxide Pb-Zn ore . Flotation is the most widely used in separating sulfide Pb-Zn ore , to separate zinc and plumbum , sometimes for separating sulfide iron and other minerals . Sulfide Pb-Zn ore process divides into priority flotation process , mix-separating flotation , asynchronous flotation ,and so on .


1、Priority flotation process , according to the different floatability and different float speed , recover the plumbum concentrate , zinc concentrate and sulfide concentrate  by sequence . This process could reduce the capacity of flotation tank ,economize reagent .


2、Mix-separating flotation process --- this process is to mix all the sulfide zinc and sulfide plumbum into the mixing concentrate , abandon tailings . This process is more effective in separating plumbum and zinc .

The flowsheet as below :


3、Asynchronous flotation ---normally different minerals have different floatability , asynchronous flotation is to separate plumbum and zinc in different steps to ensure the most effective floatability of minerals in a suitable condition .


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