Heavy liquid discarding tailings processing for improving processing capacity of lead-zinc concentrator

Abstract

Disclosed is a heavy liquid tailings discarding technics for the lead-zinc concentrator to improve the processing capacity, comprising the steps as follows: 1) according to the density of all kinds of minerals, in particular to the difference between the valuable metals and the waste rock, select the heavy liquid with a specific density between the light mineral and the heavy mineral; 2) crush the processed ores and make the particle size between 0 and 16mm; 3) put the processing ores in the heavy liquid with different specific density; 4) in an experiment of some specific density, take out the ores floated on the surface of the heavy liquid, and filter out the heavy liquid; take out the ores sunk to the bottom of the heavy liquid, and filter out the heavy liquid; 5) analyze the weight of the ores that the density is less and more than the specific density of the heavy liquid and the content of the valuable metals; 6) discard tailings by using the best specific density selected according to the fifth step as the heavy liquid. The invention has the advantages that the quantity of the ores enters the grinding mill is reduced, the cost of the ore grinding is saved, the processed ores quantity of the subsequent separating operation is also reduced, and the heavy liquid can be repeatedly used without environmental pollution.

Description

technical field [0001] The invention relates to a heavy liquid tailing process used in a lead-zinc beneficiation plant to increase the processing capacity, especially a method of using a liquid with a large specific gravity to throw away the ore with a very low content of valuable metals before grinding, and leave the rest The ore enters the grinding process again to increase the grinding capacity of the lead-zinc beneficiation plant. Background technique [0002] In the metal ore dressing plant, the grinding process is a very important and critical process. It can grind the ore to the particle size required by the subsequent separation process, but the grinding process is also the process that consumes the most energy in the entire mineral processing process. Grinding The energy consumption of the mining part accounts for about 60% of the energy consumption of the whole concentrator. Therefore, the level of grinding efficiency directly affects the energy consumption of the...

AI Technical Summary

Problems solved by technology

Not only that, but the ore with low valuable metal content after grinding may also have a negative impact on the subsequent valuable metal separation process

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