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Applications of specific restraining agent in complicated sulfuration mine

A technology of sulfide ore and inhibitor, applied in solid separation, flotation and other directions, can solve the problem of poor selectivity of flotation separation reagents, and achieve the effect of being beneficial to flotation separation, good indicators, and reducing reagent costs

Inactive Publication Date: 2008-08-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of poor selectivity of complex sulfide mineral flotation separation agents, the purpose of the present invention is to propose an organic depressant with small dosage, good suppression performance and high selectivity, non-toxic, non-polluting, easy to operate and manage for complex Sulfide Minerals as Highly Selective Suppressors for Sulfur Removal in Flotation Separations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Adopt inhibitor of the present invention: C 3 h 7 S 3 o 3 Na, sodium dimercaptopropanesulfonate, conducted laboratory research on the complex sulfide ore in Dachang, Guangxi. Its ores are mainly pyrrhotite, sphalerite, brittle pyrrhotite, etc., and 2g of pure minerals were taken for each test . Flotation is carried out in a 40ml hanging tank flotation machine, and the pH range of the pulp is 4 to 10. First, add 1000g / t of the inhibitor of the present invention and stir for 3 minutes; add 20g / t of butyl xanthate, stir 2 minutes; pine alcohol oil 15g / t, stirring for 1 minute; flotation for 4 minutes to obtain the recovery rate of pure minerals. The results are shown in Table 1.

[0023] The results in Table 1 show that this type of inhibitor has a good inhibitory effect on pyrrhotite, and its recovery rate is hardly more than 30% in a wide pH range, while brittle pyrotite and copper-activated sphalerite The ore recovery rate is almost above 70%, and this kind of inh...

Embodiment 2

[0028] closed circuit test

[0029] Adopt inhibitor of the present invention: C 4 h 10 OS, 2-mercapto-3-butanol, carried out flotation tests on lead-zinc-sulfur ore from a factory in Yunnan. The lead-zinc ore is a silicic-type lead, zinc, silver, and sulfur polymetallic sulfide deposit that is contact metasomatized and hydrothermally filled. The main metal in the ore is zinc, with a content ranging from 7.45% to 15%, followed by lead. It is 2.5% to 4.5%, and silver is associated with galena, sphalerite and pyrite, and the pyrite content is as high as 60% to 70%, which can be described as high-sulfur lead-zinc ore. Because the content of pyrite in the ore is too high, it brings great difficulties to the separation and flotation of lead, zinc and sulfur. Therefore, the determined plan is to suppress pyrite and sphalerite first, and then to float lead, zinc and pyrite in the priority flotation process. Raw ore is ground to 200 order and accounts for 80%, add lime 2kg / t, inhib...

Embodiment 3

[0031] Adopt inhibitor of the present invention: C 4 h 8 o 2 S, dimercapto isobutyric acid, conducted a test study on the separation of copper and molybdenum in a copper mine in Hubei. The copper deposit belongs to the high-medium temperature hydrothermal metasomatism skarn deposit, with many ore types and complex components. The metal minerals are mainly copper sulfide, and the associated molybdenum metal resources are abundant. In addition, there are also associated sulfur, iron, silver, gold, etc. Beneficial components, non-metallic minerals are mainly carbonate minerals, silicate minerals and silicate minerals. The ore contains about 3.02% chalcopyrite and 0.07% molybdenite. The crystalline form of chalcopyrite is semi-automorphic and other-type granular structure, fine-grained disseminated, veinlet-like, colloidal structure, milky structure and metasomatous filling structure. The intercalation characteristics of chalcopyrite in the ore range from coarse grains to fine...

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PUM

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Abstract

The invention discloses a specific inhibitor application in complex sulfide ore. The inventive organic compound contains mineral-philic group -SH, hydrophilic group -COOH, -OH, -SO3, etc. in molecular structure, which fully shows the inhibiting property against pyrrhotite, pyrite and chalcopyrite in complex sulfide ore flotation separation, and is a high selectivity desulphurizing inhibitor. Compared with the prior inorganic inhibitors such as cyanide, lime, zinc sulfate, trisodium phosphate, dichromate, potassium permanganate, sodium sulfide, sulfite, etc., the inventive inhibitor has the advantages of low usage amount, good index and no pollution.

Description

technical field [0001] The invention belongs to the technical field of sulfide mineral flotation, and relates to the application of a specific inhibitor of pyrite in a class of complex sulfide ores, in particular to the flotation of sulfide minerals containing pyrite, pyrrhotite and chalcopyrite type ores. Choose to separate. Background technique [0002] Since 1925, the use of flotation agents such as xanthate and black medicine in sulfide mineral flotation has greatly promoted the progress of sulfide mineral flotation technology, and flotation technology has become one of the three major technologies for mineral processing; The flotation separation of complex sulfide minerals becomes more and more difficult and important, and the use of various inhibitors improves the possibility of flotation separation of these sulfide minerals. [0003] At present, the inhibitors used in the flotation separation of sulfide minerals can be roughly divided into two categories: 1. Inorgani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/06B03D103/02
Inventor 胡岳华孙伟刘润清
Owner CENT SOUTH UNIV
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