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Combined inhibitor for flotation separation of lead-zinc sulfide ore and application

A combination of inhibitors and lead-zinc sulfide technology, applied in flotation, solid separation, etc., can solve the problems of large dosage of reagents and high cost, and achieve the effect of reducing the cost of mineral processing, reducing the dosage, and high-efficiency separation

Pending Publication Date: 2021-10-08
YILIANG CHIHONG MINING IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above several pharmaceutical systems generally have the disadvantages of large dosage and high cost.

Method used

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  • Combined inhibitor for flotation separation of lead-zinc sulfide ore and application
  • Combined inhibitor for flotation separation of lead-zinc sulfide ore and application
  • Combined inhibitor for flotation separation of lead-zinc sulfide ore and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: A flotation separation experiment was carried out on a lead-zinc sulfide mine in Yunnan. The raw ore contains 2.24% Pb, 1.78% Zn and 1.56% Fe. The main useful minerals are galena and sphalerite. Gangue mineral content is low, mainly calcite and dolomite.

[0022] The combined inhibitor of the present invention is used for flotation separation. The combined inhibitor includes zinc sulfate and iminodisuccinic acid, wherein the mass ratio of zinc sulfate and iminodisuccinic acid is 4:1. Such as figure 1 As shown, the specific operation is as follows:

[0023] (1) Grind the raw ore to -0.074mm, accounting for 70%, and obtain the ore pulp to be flotation after pulping;

[0024] (2) Add quicklime to the pulp in turn as pyrite inhibitor, combined inhibitor zinc sulfate and iminodisuccinic acid as sphalerite inhibitor, and then add collector ethion and foaming agent 2# The oil is subjected to a lead flotation operation of one roughing, three times of beneficiation...

Embodiment 2

[0030] Example 2: A flotation separation experiment was carried out on a lead-zinc sulfide mine in Liaoning. The raw ore contained 4.06% Pb, 3.58% Zn and 3.02% Fe, and the main useful minerals were galena and sphalerite. The gangue minerals are mainly calcite and dolomite.

[0031] The combined inhibitor of the present invention is used for flotation separation. The combined inhibitor includes zinc sulfate and iminodisuccinic acid, wherein the mass ratio of zinc sulfate and iminodisuccinic acid is 3:1. Such as figure 1 As shown, the specific operation is as follows:

[0032] (1) Grind the raw ore to -0.074mm, accounting for 75%, and obtain the ore pulp to be flotation after pulping;

[0033] (2) Add quicklime to the pulp in turn as pyrite inhibitor, combined inhibitor zinc sulfate and iminodisuccinic acid as sphalerite inhibitor, and then add collector ethion and foaming agent 2# The oil is subjected to a lead flotation operation of one roughing, three times of beneficiatio...

Embodiment 3

[0039] Example 3: A flotation separation experiment was carried out on a lead-zinc sulfide mine in Inner Mongolia. The raw ore contained 1.80% Pb, 3.41% Zn and 4.32% Fe. The lead in the ore mainly exists in the form of galena, the zinc mainly exists in the form of sphalerite, and the iron mainly exists in the form of pyrite.

[0040] The combined inhibitor of the present invention is used for flotation separation. The combined inhibitor includes zinc sulfate and iminodisuccinic acid, wherein the mass ratio of zinc sulfate and iminodisuccinic acid is 1:1. Such as figure 1 As shown, the specific operation is as follows:

[0041] (1) Grind the raw ore to -0.074mm, accounting for 80%, and obtain the ore pulp to be flotation after pulping;

[0042] (2) Add quicklime to the pulp in turn as pyrite inhibitor, combined inhibitor zinc sulfate and iminodisuccinic acid as sphalerite inhibitor, and then add collector ethion and foaming agent 2# The oil is subjected to a lead flotation o...

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Abstract

The invention discloses a combined inhibitor for flotation separation of lead-zinc sulfide ore and application. The combined inhibitor comprises zinc sulfate and iminodisuccinic acid. The combined inhibitor is used as a sphalerite inhibitor for flotation separation of galena and sphalerite. The method comprises the steps of conducting ore grinding and pulp mixing on raw ore, obtaining ore pulp to be floated, sequentially adding a combined inhibitor, quick lime, a collecting agent and a foaming agent into the ore pulp for lead flotation operation, obtaining lead concentrate and lead flotation tailings, sequentially adding an activating agent, the collecting agent and the foaming agent into the lead flotation tailings for zinc flotation operation, and obtaining zinc concentrate and tailings. The combined inhibitor has a strong inhibition effect on sphalerite, flotation separation of galena and sphalerite is effectively achieved, the combined inhibitor can be naturally degraded and is environmentally friendly, and the dosage of zinc sulfate can be reduced by adding iminodisuccinic acid, so that the mineral separation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of beneficiation of lead-zinc sulfide ore, and relates to a combined inhibitor for flotation separation of lead-zinc sulfide ore and its application, in particular to zinc sulfate and iminodisuccinic acid as sphalerite inhibitors in lead-zinc sulfide Application in mine flotation separation process. Background technique [0002] Lead and zinc are important non-ferrous metals, which occupy an important position in the development of the national economy. At present, the extraction of lead metal and zinc metal mainly comes from lead-zinc sulfide ore, and galena and sphalerite are the main carrier minerals of lead and zinc metal. However, lead and zinc have a common mineralization cause and similar electronic structure, and to a large extent have the same hydrophilic and hydrophobic properties. In addition, lead and zinc are often closely symbiotic and difficult to completely dissociate, making the separation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D1/02B03D101/06B03D103/02
CPCB03D1/018B03D1/02B03D2201/06B03D2203/02
Inventor 罗进蒋合国李广利刘瑞增覃勇胜谢立志黄道军孟德暑张友银钟少杰高连启惠世和刘志成郎召友宁帅李佳磊常田仓张悦
Owner YILIANG CHIHONG MINING IND
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