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A Method for Reducing Copper Loss During Zinc Enhanced Leach Solution Reduction

A technology to enhance leaching and copper loss, applied in the direction of improving process efficiency, etc., can solve the problem of high copper loss rate, achieve the effects of reducing precipitation, increasing production income, and reducing reduction temperature

Active Publication Date: 2018-10-12
HENAN YUGUANG ZINC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of high loss rate of copper during the reduction of zinc enhanced leaching solution in the prior art zinc hydrometallurgy process, and provide a method for reducing copper loss during the reduction of zinc enhanced leaching solution, effectively reducing the loss rate of copper , to increase recovery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, a kind of method that reduces copper loss when the zinc strengthened leaching solution is reduced, the zinc strengthening leaching solution of hydrometallurgy is added in the reaction tank, the copper ion concentration in the zinc strengthening leaching solution is 2.48g / l, prepares lead-zinc composite Concentrate, the particle size of the lead-zinc composite concentrate is controlled at 180-325 mesh, of which 325 mesh accounts for more than 60%, and the iron content is 2-5%. The addition of the lead-zinc composite concentrate is the theoretical consumption When the temperature is 50°C, start to add 30% lead-zinc composite concentrate with uniform particle size into the reaction tank, stir, and put it in within 30 minutes. The reaction temperature rises to 78°C. After ten minutes, add the remaining Lead-zinc composite concentrate, the lead-zinc composite concentrate is added, and the concentration of ferric ions in the solution is monitored after 1.5 hours ...

Embodiment 2

[0018] Embodiment 2, a method for reducing copper loss when the zinc-enhanced leaching solution is reduced, adding the zinc-enhanced leaching solution of hydrometallurgy into the reaction tank, the concentration of copper ions in the zinc-enhanced leaching solution is 2.64g / l, and preparing lead-zinc composite Concentrate, the particle size of the lead-zinc composite concentrate is controlled at 180-325 mesh, of which 325 mesh accounts for more than 60%, and the iron content is 2-5%. The addition amount of the lead-zinc composite concentrate is the theoretical consumption 2 times the amount, when the temperature is 50°C, start to add 50% lead-zinc composite concentrate with uniform particle size to the reaction tank, stir, and put it in within 30 minutes. The reaction temperature rises to 80°C. After ten minutes, add the remaining The lead-zinc composite concentrate, the lead-zinc composite concentrate has been added, and the concentration of ferric ions in the solution will be...

Embodiment 3

[0020] Example 3, a method for reducing copper loss when the zinc-enhanced leaching solution is reduced, adding the zinc-enhanced leaching solution of the hydrometallurgy into the reaction tank, the concentration of copper ions in the zinc-enhanced leaching solution is 2.64g / l, and preparing lead-zinc composite Concentrate, the particle size of the lead-zinc composite concentrate is controlled at 180-325 mesh, of which 325 mesh accounts for more than 60%, and the iron content is 2-5%. The addition amount of the lead-zinc composite concentrate is the theoretical consumption 1.8 times the amount, when the temperature is 50°C, start to add 50% lead-zinc composite concentrate with uniform particle size to the reaction tank, stir, and put it in within 30 minutes. The reaction temperature rises to 65°C. After ten minutes, add the remaining lead-zinc composite concentrate, the lead-zinc composite concentrate is added, and the concentration of ferric ions in the solution is monitored a...

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Abstract

The invention relates to a method for reducing copper loss in reduction of a zinc-enhanced leaching liquid. The method is characterized in that the zinc-enhanced leaching liquid in zinc hydrometallurgy is added into a reaction tank, a lead and zinc compounded ore concentrate is added into the reaction tank, the zinc-enhanced leaching liquid and the lead and zinc compounded ore concentrate are stirred in the reaction tank, the reaction temperature in the reaction tank is controlled to 65-80 DEG C, the concentration of the ferric ion in the zinc-enhanced leaching liquid in the reaction tank is monitored, and when the concentration of the ferric ion in the zinc-enhanced leaching liquid reaches 1-4 g / L, filtering is implemented, and the replacement procedure is conducted. The method for reducing copper loss in the reduction of the zinc-enhanced leaching liquid in the process of zinc hydrometallurgy has the advantages that the wastage rate of copper in the enhanced leaching liquid is effectively reduced, the recovery yield of the copper is improved, the production cost is lowered, and the production income is increased.

Description

technical field [0001] The invention belongs to the technical field of zinc removal and recovery by hydrometallurgy, and in particular relates to a method for reducing copper loss during the reduction of zinc-enhanced leaching solution. Background technique [0002] At present, the conventional zinc hydrometallurgy process can comprehensively recover more than ten kinds of valuable metals such as lead, indium, silver, iron, copper, cadmium, etc., but there are problems of low recovery rate and high recovery cost of valuable metals such as copper, indium, and silver , while high-quality zinc concentrate resources are becoming more and more scarce, and composite zinc concentrates rich in various valuable metals are becoming a trend, which puts forward higher requirements for smelting processes. Research on the comprehensive recovery process of valuable metals in materials such as copper, indium, silver and other materials with high valuable metals such as zinc calcine, leachin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/44C22B15/00
CPCC22B3/44C22B15/0089Y02P10/20
Inventor 孔金换倪恒发杨腾蛟翟爱萍尹荣花张向阳董高峰张文科张阳张利涛
Owner HENAN YUGUANG ZINC IND
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