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Antimony-sulfur bulk concentrate flotation separation process and combined inhibitor

A combined inhibitor and mixed concentrate technology is applied in the flotation separation process of antimony-sulfur mixed concentrate and the combined inhibitor and mineral flotation reagent field, which can solve the problems of lack of efficient selective inhibitor in antimony-sulfur separation, etc. The effect of easy operation in industrial production, enhanced inhibition effect, and simplified process flow

Inactive Publication Date: 2017-07-18
HUNAN RES INST FOR NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing antimony-sulfur separation lacks high-efficiency selective inhibitors, the present invention proposes a combined inhibitor capable of selectively inhibiting pyrite and realizing the flotation separation of antimony-sulfur mixed concentrate and its flotation method

Method used

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  • Antimony-sulfur bulk concentrate flotation separation process and combined inhibitor
  • Antimony-sulfur bulk concentrate flotation separation process and combined inhibitor
  • Antimony-sulfur bulk concentrate flotation separation process and combined inhibitor

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The antimony content in the test raw material (raw ore) is 0.71%, and the sulfur content is 7.89%. The technical mineralogy research results show that the main metal minerals of the ore are pyrite and stibnite. Adopt a kind of combined inhibitor for the separation of antimony and sulfur provided by the present invention and its application method, carry out laboratory small-scale closed-circuit test to this mine, the concrete steps of test are as follows:

[0027] 1) Add 1000g / t of sodium carbonate during the ore grinding process until the fineness is -200 mesh 70%. After grinding, add 150g / t of lead nitrate as an activator and 15g / t of ethylsulfide as Collector, 20g / t of MIBC as foaming agent, stirring, antimony sulfur, etc. can be floated to obtain antimony sulfur mixed concentrate;

[0028] 2) During the flotation separation of antimony-sulfur mixed concentrate, first add 500g / t of activated carbon for drug removal, then add 50g / t of combined inhibitors as pyrite inh...

Embodiment 2

[0036] The content of antimony in the test raw material (raw ore) is 0.65%, and the content of sulfur is 7.51%. The results of technological mineralogy show that the main metal minerals of this mine are pyrite and stibnite. Adopt a kind of combined inhibitor for the separation of antimony and sulfur provided by the present invention and its application method, carry out laboratory small-scale closed-circuit test to this mine, the concrete steps of test are as follows:

[0037] 1) Add 1000g / t of sodium carbonate during the ore grinding process until the fineness is -200 mesh 70%. After grinding, add 120g / t of lead nitrate as an activator and 15g / t of ethylsulfide as a Collector, 20g / t of MIBC as foaming agent, stirring, antimony sulfur, etc. can be floated to obtain antimony sulfur mixed concentrate;

[0038] 2) When flotation separation of antimony-sulfur mixed concentrate, first add 500g / t of activated carbon to remove the drug, then add 50g / t of combined inhibitor as pyrite ...

Embodiment 3

[0046] For the ore sample in Example 1, under the condition that the process structure and other medicament systems are kept constant, the combined inhibitor provided by the present invention is replaced by CMC, and the small-scale closed-circuit test in the laboratory is carried out to the mine. The specific steps of the test are as follows:

[0047] 1) Add 1000g / t of sodium carbonate during the ore grinding process, grind the ore until the fineness is -200 mesh 70%, add 150g / t of lead nitrate as an activator after grinding, and add 15g / t of ethyl disulfide as an activator Collector, 20g / t of MIBC as foaming agent, stirring, antimony sulfur, etc. can be floated to obtain antimony sulfur mixed concentrate;

[0048]2) During the flotation separation of antimony-sulfur mixed concentrate, first add 500g / t of activated carbon for drug removal, then add 200g / t of CMC (carboxymethyl cellulose) as pyrite inhibitor, and 5g / t of ethyl sulfur Nitrogen is used as a collector of stibnite,...

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Abstract

The invention discloses an antimony-sulfur bulk concentrate flotation separation process and a combined inhibitor. The combined inhibitor comprises dimercaptosuccinic acid and sodium hydrosulfide in a mass ratio ranging from 1:1 to 1:2. In the antimony-sulfur bulk concentrate flotation separation process, by each ton of crude ore, 5-50g of the combined inhibitor is added each time. The combined inhibitor has the advantages of being good in action effect, small in amount and the like, and antimony and sulfur can be effectively separated.

Description

technical field [0001] The invention relates to a mineral flotation reagent, in particular to a flotation separation process of an antimony-sulfur mixed concentrate and a combined inhibitor, and belongs to the technical field of flotation of antimony-sulfur minerals. Background technique [0002] Because the floatability of stibnite is similar to that of pyrite, the preferential flotation process is usually used in the treatment of sulfur-containing stibnite, which is more effective in the treatment of stibnite ores with relatively simple properties. However, with the increasing shortage of easy-to-separate ores, complex and difficult-to-separate ores have become the focus of current mineral processing research, so there are many disadvantages in the preferential flotation process. One, because the pyrite is suppressed during floatation, it is difficult to further recover the pyrite from the tailings; second, when the raw ore contains other useful oxidized minerals (such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06B03D101/02B03D101/04B03D103/02
CPCB03D1/018B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 江锋叶从新魏党生骆任张丽敏蒋素芳郭玉武韦华祖
Owner HUNAN RES INST FOR NONFERROUS METALS
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