Mineral separation process capable of separating copper, lead, zinc polymetal sulphide ore

Abstract

The invention relates to a method for ore dressing, in particular to a method for the ore dressing of a copper-lead-zinc poly-metallic sulfide ore. The method consists of crude ore dressing, ore grinding, copper-lead bulk flotation, copper-lead separation and zinc flotation, wherein in the process of the copper-lead bulk flotation, ore dressing reagents BP, No.25 aerofloat and ethylic-butyl xanthate are adopted as collecting agents for copper and lead ores, and zinc sulfate, sodium carbonate and sodium sulfide are adopted as inhibitors for zinc ores; and in the process of the copper-lead separation, active carbon is adopted to perform reagent removal, sodium sulfite, CMC and water glass are adopted as the inhibitors for lead ores, and No.Z-200 as the collecting agent for copper ores. The method has good metallic mineral separation effect and high metal recovery rate, is simple, is easy to operate, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a copper-lead-zinc polymetallic sulfide ore beneficiation method. Background technique [0002] Copper-lead-zinc complex sulfide ores are very difficult to sort due to the dense symbiosis of several metals and the fine particle size embedded in each other. The treatment of this kind of ore at home and abroad is generally to grind the ore to the required fineness, and obtain copper-lead-zinc mixed concentrate through flotation. There are three main beneficiation methods for separating copper, lead, and zinc from copper-lead-zinc mixed concentrate. One is the heating method, that is, by heating and analyzing various agents on the surface of the minerals, resulting in differences in mineral buoyancy to achieve separation. The second is to use cyanide reagents to inhibit the buoyancy of copper minerals, and flotation lead ore to achieve the purpose of separation; the third is to add organic...

AI Technical Summary

Problems solved by technology

There are three main beneficiation methods for separating copper, lead, and zinc from copper-lead-zinc mixed concentrate. One is the heating method, that is, by heating and analyzing various agents on the surface of the minerals, resulting in differences in mineral buoyancy to achieve separation. The second is to use cyanide reagents to inhibit the buoyancy of copper minerals, and flotation lead ore to achieve the purpose of separation; the third is to add organic salts, that is, to use starch, baked gum, dextrin, etc. as Inhibitor, inhibiting galena flotation of copper minerals, but the common problems of the methods listed above are that the separation effect of various metal minerals is not good, the metal recovery rate is low, and the amount of copper and zinc mixed in the lead concentrate is high, resulting in The product quality is poor, some methods have high energy consumption, and some methods are poisonous and pollute the environment. Therefore, people have been looking for a simple and effective separation method

This process still does not solve the problems of poor separation of metal minerals, low metal recovery rate, and high copper and zinc inclusions in lead concentrate, resulting in poor product quality.

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