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A kind of arsenopyrite combined inhibitor and its application

A combined inhibitor and inhibitor technology, applied in solid separation, flotation and other directions, can solve problems such as poor selectivity, limited types of agents, and unfriendly environment.

Active Publication Date: 2020-10-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) Inorganic inhibitors have the disadvantages of large dosage, poor selectivity, limited inhibitory effect, and unfriendly to the environment. Currently, they are not widely used in domestic mines.
[0009] (2) The adaptability of organic inhibitors is poor and they also have an inhibitory effect on some non-ferrous metal sulfide ores, and the types of agents are relatively limited
[0010] (3) Composite inhibitors are often a simple combination of commonly used inorganic inhibitors and organic inhibitors. There is less research on the development of new inhibitors, and there are large dosages of agents and poor selectivity. They also have inhibitory effects on some non-ferrous metal sulfide ores. Not conducive to the recovery of the main metal
[0014] (3) Arsenopyrite needs to be precisely suppressed in flotation, and basically has no inhibitory effect on the main metal ore

Method used

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  • A kind of arsenopyrite combined inhibitor and its application
  • A kind of arsenopyrite combined inhibitor and its application
  • A kind of arsenopyrite combined inhibitor and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A combined inhibitor of arsenopyrite, the combined inhibitor includes organic inhibitors and inorganic inhibitors.

[0040] The organic inhibitor is 1,2-dicarboxy-3,5,6,8-tetrahydroxy-7-(5,-(2-acetamido-ethyl)-2,-hydroxyphenyl)anthracene Quinone, the inorganic inhibitor of Ca(ClO) 2 . The total amount of organic inhibitors is 100-600g / t, and the total amount of inorganic inhibitors is 300-1000g / t, where g / t refers to the number of grams of inhibitors added during flotation separation of copper-arsenic mixed concentrate. Organic inhibition can interact with free Cu in solution 2+ A hydrophilic complex is formed and adsorbed on the surface of the arsenopyrite ore, which enhances the hydrophilicity of the arsenopyrite and realizes the inhibition of the arsenopyrite.

[0041] 1,2-dicarboxy-3,5,6,8-tetrahydroxy-7-(5,-(2-acetamido-ethyl)-2,-hydroxyphenyl)anthraquinone reacts with Cu2+ as follows :

[0042]

Embodiment 2

[0044] A combined inhibitor of arsenopyrite, the combined inhibitor includes organic inhibitors and inorganic inhibitors.

[0045] The organic inhibitor is 1,2-dicarboxy-3,5,6,8-tetrahydroxyl-7-(2,-hydroxyl-5,-(hydroxyethyl)-phenyl)anthraquinone, the Inorganic inhibitor Na 2 SO 3. The total amount of organic inhibitors is 100-600g / t, and the total amount of inorganic inhibitors is 300-1000g / t, where g / t refers to the number of grams of inhibitors added during flotation separation of copper-arsenic mixed concentrate. Organic inhibition can interact with free Cu in solution 2+ A hydrophilic complex is formed and adsorbed on the surface of the arsenopyrite ore, which enhances the hydrophilicity of the arsenopyrite and realizes the inhibition of the arsenopyrite.

[0046] The 1,2-dicarboxy-3,5,6,8-tetrahydroxyl-7-(2'-hydroxyl-5'-(hydroxyethyl)-phenyl)anthraquinone and Cu 2+ The following reactions can occur:

[0047]

Embodiment 3

[0048] Embodiment 3: arsenopyrite combined inhibitor and application method thereof:

[0049] (1) Combination inhibitors: 1,2-dicarboxy-3,5,6,8-tetrahydroxy-7-(5'-(2-acetamido-ethyl)-2'-hydroxyphenyl)anthracene The amount of quinone is 200g / t, the amount of 1,2-dicarboxy-3,5,6,8-tetrahydroxy-7-(2'-hydroxy-5'-(hydroxyethyl)-phenyl)anthraquinone 60g / t, Na 2 SO 3 The dosage is 600g / t.

[0050] (2) Copper-arsenic mixed concentrate: the grade of Cu is 20.86wt%, the grade of As is 3.22wt%, the copper-containing mineral is mainly chalcopyrite, and the arsenic-containing mineral is mainly arsenopyrite.

[0051] (3) Flotation conditions: the mass concentration of ore pulp is 15%, and the Na in the combined inhibitor is first added 2 SO 3 Stir for 3 minutes, then add 1,2-dicarboxy-3,5,6,8-tetrahydroxy-7-(5'-(2-acetamido-ethyl)-2'-hydroxyphenyl)anthraquinone and stir 3min, after 1 roughing (roughing time 3min), 1 sweeping (sweeping time 3min), 1 time of concentration (selection tim...

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Abstract

The invention belongs to the technical field of flotation separation of arsenopyrite and copper sulfide ores, and particularly relates to an arsenopyrite combined inhibitor and an application thereof.The combined inhibitor comprises an organic inhibitor and an inorganic inhibitor. The organic inhibitor and Cu<2+> form a complex, and the complex is adsorbed on the surface of arsenopyrite, so the hydrophilicity of the surface of the arsenopyrite is enhanced, the floatability of the arsenopyrite is reduced, and the inhibition effect on the arsenopyrite is enhanced. Compared with single inhibitors, the combined inhibitor can greatly reduce the adsorbing capacity of a collecting agent on the surface of the arsenopyrite ore. The combined inhibitor has a high inhibition selectivity on arsenopyrite, and basically has no inhibition effect on the copper sulfide ore. The combined inhibitor has a high adaptability, and can effectively inhibit arsenopyrite in copper sulfide concentrate containingchalcopyrite and schreyerite. The combined inhibitor also has the advantages of small dosage, safety, non-toxicity, environmental friendliness, good stability, good water solubility, easiness in preparation and addition, convenience in use, effective achieving of flotation separation of the arsenopyrite and copper sulfide ores, and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of arsenopyrite flotation, and in particular relates to an arsenopyrite combined inhibitor and application thereof. Background technique [0002] Arsenopyrite, also known as arsenopyrite, is the most common ore in arsenic-containing minerals. It is often associated with chalcopyrite, pyrite, pyrrhotite, galena, sphalerite and other sulfide ores and precious metals. Gold and silver are closely symbiotic. The [FeS] bond that exists when the arsenopyrite is broken can easily interact with the sulfur compound collector and enter the flotation non-ferrous metal sulfide concentrate, causing the arsenic content in the main metal concentrate to exceed the standard, affecting the quality of the concentrate, and The arsenic-containing compounds produced in the subsequent smelting process will seriously pollute the air and water resources and increase the cost of smelting. [0003] Starting from the two aspects of en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02
Inventor 刘洋魏志聪曾明王衡松彭蓉
Owner KUNMING UNIV OF SCI & TECH
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