Pollution-free flotation separation method for copper-lead-zinc polymetallic ore

Abstract

The invention discloses a pollution-free flotation separation method of copper-lead-zinc polymetallic ore. Firstly, the crushed raw ore and water are ground at a ratio of 1:1 until the fineness of the material discharged from the ball mill is -0.074mm and reaches 90-95%. Add lime, sodium sulfide, zinc sulfate, sodium sulfite inhibitor and butyl xanthate collector for copper-lead mixed flotation, copper-lead roughing concentrate and then grind to -0.045mm90~95%, add inhibitor under low alkalinity Agent zinc sulfate + sodium sulfite, collector Z-200 lead-suppressing floating copper to achieve asynchronous separation of copper and lead, and obtain copper concentrate after one roughing and two selections; copper and lead separation roughing tailings are swept once and then lead is separated In the lead selection operation, lime is added to strengthen zinc suppression and sulfur, butyl xanthate is used as a collector, and lead concentrate is obtained after one roughing and two sweepings and two sweepings; the lead sweeping tailings return to the copper-lead mixed roughing operation, Other medium mines return to the previous operation in sequence. The method has the advantages of green and pollution-free, low production cost, and good sorting effect, and realizes efficient separation and comprehensive recovery of copper, lead and zinc.

Description

technical field [0001] The invention relates to a beneficiation method for copper-lead-zinc polymetallic ore, in particular to a pollution-free flotation separation method for copper-lead-zinc polymetallic sulfide ore. Background technique [0002] With the acceleration of the industrialization of mineral processing, limited mineral resources have been developed on a large scale, and improving resource utilization and energy conservation and environmental protection have become the subject of today. [0003] Copper-lead-zinc polymetallic sulfide ores have the following common characteristics: There are many kinds of minerals, and the useful minerals are mostly distributed in a disseminated shape, with fine and uneven particle size, and the minerals are symbiotic, intersecting or wrapped with each other, and the symbiotic relationship is close and complicated; The ore contains high sulfur, and the ore is easy to oxidize and deteriorate; Containing a certain amount of sec...

AI Technical Summary

Problems solved by technology

At present, the two most effective methods are cyanide inhibition of copper and floating lead and potassium dichromate method of inhibiting lead and floating copper. The former cyanide has a strong inhibitory effect on copper minerals, but almost no inhibitory effect on lead ore. Therefore, the effect of suppressing copper and floating lead is very good, but its disadvantage is that cyanide is highly toxic, which will cause serious pollution to the environment, and will dissolve gold, silver and secondary copper sulfide minerals in the ore; the latter uses potassium dichromate method Lead-suppressed floating copper has the advantages of small dosage of chemicals and stable production operation, but dichromate

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