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Lead zinc ore flotation method adopting novel combined inhibitor

A combination of inhibitor and lead-zinc ore technology, applied in flotation, solid separation, etc., can solve the problems of oxidation failure and time-dependent inhibition, and achieve the effect of reducing zinc content

Inactive Publication Date: 2017-02-22
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sulfite is easy to oxidize and fail in the pulp, so its inhibitory effect is time-sensitive

Method used

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  • Lead zinc ore flotation method adopting novel combined inhibitor
  • Lead zinc ore flotation method adopting novel combined inhibitor
  • Lead zinc ore flotation method adopting novel combined inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Include the following steps:

[0044] (1) Grinding and classifying operations: grinding the lead-zinc polymetallic ore to a fineness of -200 mesh, and the content accounts for 70%;

[0045] (2) Flotation operation:

[0046] (1) Rough separation operation: add calcium oxide to adjust the pulp, stirring time is 5 minutes, pH value is 10.5, then add inhibitor 2400g / t, the inhibitor is Na 2 CO 3 : ZnSO 4 The weight ratio is 1:1, the stirring time is 5 minutes, the collector is ethyl disulfide, the dosage is 40g / t, the stirring time is 3 minutes, and finally the foaming agent methyl isobutyl carbinol is added, the dosage is 20g / t, The stirring time is 2 minutes, and the flotation time is 4 minutes to obtain the coarse ore concentrate;

[0047] (2) Sweeping I operation: keep the pH value of the ore pulp at 10.5, the dosage of other chemicals is 1 / 2 of the dosage of roughing agents, and the flotation time is 4 minutes to obtain middle ore 1;

[0048] (3) Sweeping II opera...

Embodiment 2

[0051] Include the following steps:

[0052] (1) Grinding and classifying operations: grinding the lead-zinc polymetallic ore to a fineness of -200 mesh, and the content accounts for 80%;

[0053] (2) Flotation operation:

[0054] (1) Rough separation operation: add calcium oxide to adjust the pulp, stirring time is 8 minutes, pH value is 11.0, and then add inhibitor 3600g / t, the inhibitor is Na 2 CO 3 : ZnSO 4 The weight ratio is 1:2, the stirring time is 8 minutes, the collector is ethyl disulfide, the dosage is 45g / t, the stirring time is 4 minutes, and finally the foaming agent methyl isobutyl carbinol is added, the dosage is 25g / t, The stirring time is 2.5 minutes, and the flotation time is 5 minutes to obtain the coarse ore concentrate;

[0055] (2) Sweeping I operation: keep the pH value of the ore pulp at 11.0, the dosage of other agents is 1 / 2 of the dosage of roughing agents, and the flotation time is 4.5 minutes to obtain middle ore 1;

[0056] (3) Sweeping II ...

Embodiment 3

[0059] Include the following steps:

[0060] (1) Grinding and classifying operations: grinding the lead-zinc polymetallic ore to a fineness of -200 mesh, and the content accounts for 90%;

[0061] (2) Flotation operation:

[0062] (1) Rough separation operation: adding calcium oxide to adjust the pulp, stirring time for 10 minutes, pH value 11.5, then adding inhibitor 4800g / t, the inhibitor is Na 2 CO 3 : ZnSO 4 The weight ratio is 1:3, the stirring time is 10 minutes, the collector is ethylsulfide nitrogen, the dosage is 50g / t, the stirring time is 5 minutes, and finally the foaming agent methyl isobutyl carbinol is added, the dosage is 30g / t, The stirring time is 3 minutes, and the flotation time is 6 minutes to obtain the coarse ore concentrate;

[0063] (2) Sweeping I operation: keep the pH value of the ore pulp at 11.5, the dosage of other chemicals is 1 / 2 of the dosage of roughing agents, and the flotation time is 5 minutes to obtain middle ore 1;

[0064] (3) Sweep...

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Abstract

The invention relates to a lead zinc ore flotation method adopting a novel combined inhibitor, and belongs to lead zinc ore flotation methods adopting inhibitors. The method comprises the steps of ore grinding grading operation, wherein lead and zinc polymetallic ore is subjected to ore grinding till the fineness of 200 mesh is achieved, and the content ranges from 70% to 90%; roughing operation, wherein calcium oxide is added to carry out size mixing on ore pulp, the inhibitor Na2CO3:ZnSO4 and a collector and foaming agent methyl isobutyl carbinol are added, and rough concentrate is obtained; scavenging I operation; scavenging II operation; concentrating operation and inhibitor adding. The method has the advantages that after the novel combined inhibitor Na2CO3+ZnSO4 is used in the lead and zinc flotation process, zinc in lead concentrate can be effectively inhibited, the zinc content in the lead concentrate is obviously reduced, and the qualified lead concentrate product can be obtained.

Description

technical field [0001] The invention relates to a lead-zinc ore flotation method using an inhibitor. Background technique [0002] Lead and zinc are one of the earliest metals extracted by humans from lead and zinc ores. Lead and zinc are widely used in electrical industry, machinery industry, military industry, metallurgical industry, chemical industry, light industry and pharmaceutical industry and other fields. In addition, lead metal also has many uses in nuclear industry, petroleum industry and other departments. There are 11 kinds of lead minerals and 6 kinds of zinc minerals in lead-zinc mines, among which galena and sphalerite are the most important. The chemical formula of galena is PbS, the crystal structure is an equiaxed crystal system, the sulfide ions are cubically most closely packed, and the lead ions are filled in all the octahedral voids. The chemical formula of sphalerite is ZnS, and the crystal structure is an equiaxed crystal system. Zn ions are distr...

Claims

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Application Information

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IPC IPC(8): B03D1/002B03D1/00B03D101/06B03D103/02
CPCB03D1/002B03D1/00B03D2201/06B03D2203/02
Inventor 孙洪丽岳辉郑晔郝福来
Owner CHANGCHUN GOLD RES INST
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