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A Composite Depressant for Inhibiting the Flotation of Copper Sulfide Minerals

A compound inhibitor and mineral flotation technology, which is applied in the field of ore dressing inhibitor and chalcopyrite inhibitor, can solve the problems of complex production process and high cost of chemicals, and achieve the effects of wide sources, low processing cost and easy preparation

Inactive Publication Date: 2011-12-14
SHENYANG RES INST OF NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The publication number is CN 101249474 Chinese invention patent application provides a kind of "Application of Special Effect Inhibitor in Complex Sulfide Ore", the molecular structure of the organic compound inhibitor contains oreophilic group -SH, hydrophilic group -COOH, - OH, -SO 3 etc. It is used in the flotation separation of complex sulfide ores to fully demonstrate the inhibitory performance on pyrrhotite, pyrite, and chalcopyrite. It is a highly selective inhibitor for sulfur removal, but there are also production processes Disadvantages such as complexity and high drug cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Compound inhibitor: Mix 80% of sodium sulfide and 20% of sodium thioglycolate under normal temperature and pressure at a speed of 300-1000 rad / min and evenly mix to obtain a compound inhibitor.

[0018] A molybdenum ore is a low-grade large molybdenum deposit with associated copper minerals. There are many kinds of metal minerals in the test ore samples, but the content is very low, and the total metal mineral content in the ore is less than 1%. The rock and mineral identification results show that the metal minerals in the ore include pyrite, molybdenite, chalcopyrite, sphalerite, pyrrhotite, brookite, siderite, copper blue, galena, etc.; Central non-metallic minerals are mainly quartz, feldspar, biotite, chlorite, sericite and a small amount of carbonate, epidote, apatite and so on. The recoverable mineral is molybdenite, and chalcopyrite is comprehensively recovered. The ore contains 0.081% molybdenum, 0.043% copper, 8.54% molybdenum oxidation rate and 13.04% c...

Embodiment 2

[0020] Compound inhibitor: Mix 70% of sodium sulfide and 30% of sodium thioglycolate under normal temperature and pressure at a speed of 300-1000 rad / min and evenly mix to obtain a compound inhibitor.

[0021] The main minerals molybdenite and chalcopyrite in a molybdenum ore are mainly coarse-grained and embedded in uneven thickness. The particle size distribution characteristics of molybdenite and chalcopyrite are very similar. In the ore, molybdenite and chalcopyrite are produced in various forms, and the ore structure is relatively complex. In particular, molybdenite is closely related to pyrite and chalcopyrite, and has the phenomenon of mutual replacement and cutting, and even wrapping each other. body exists. The appearance of molybdenite and the structure of the ore have become the refractory factors for the selection of ore, mainly because the relationship between molybdenite and pyrite and chalcopyrite is relatively close, especially the relationship between mol...

Embodiment 3

[0028] Compound inhibitor: Mix 60% of sodium sulfide and 40% of sodium thioglycolate under normal temperature and pressure at a speed of 300-1000 rad / min and mix them evenly to obtain a compound inhibitor.

[0029] Its molybdenum ore is poor molybdenum ore, the molybdenum grade in the ore is low and partially oxidized, chalcocite is mainly embedded in the gangue with fine particles, and the ore contains relatively high pyrite and chalcopyrite, and contains more The characteristics of easy-mudification of gangue minerals. The molybdenite in the ore is dominated by fine particles, of which only 11.99% is larger than 0.1 mm, and 34.56% is smaller than 0.037%. The molybdenum grade is 0.080%, (molybdenum oxidation rate is 12.26%), and the copper grade is 0.060%. The first stage of rough grinding (the first stage of grinding fineness is -0.075mm accounts for 65%), and the concentrate is reground after two coarse and fine selections (the regrind fineness is -0.075mm accounts for...

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Abstract

The present invention relates to a composite depressant for inhibiting the flotation of copper sulfide minerals. Sodium acetate 20% ~ 80%; The preparation method is: According to the above ratio, under normal temperature and pressure, stir and mix evenly at a speed of 300 ~ 1000rad / min to obtain a compound inhibitor. The present invention overcomes (1) the environmental pollution caused by the application of cyanide; (2) the large amount of sodium sulfide used, the high expense of the medicament, and the poor economic benefit; Activation of sulfide ions on chalcopyrite, pyrite, etc. The compound depressant has improved inhibition effect and inhibition effect, and has the characteristics of wide source of raw materials, easy preparation, low processing cost, stable flotation performance, relatively low price and easy popularization.

Description

technical field [0001] The invention relates to a mineral processing inhibitor, in particular to a composite inhibitor for inhibiting the flotation of copper sulfide minerals, which belongs to the field of mineral processing agents. The composite inhibitor is easy to prepare, low in processing cost, stable in flotation performance, and source of raw materials Wide range, low price, easy to promote, is a better chalcopyrite inhibitor. Background technique [0002] According to data reports, 30% of the proven molybdenite reserves are symbiotic with other minerals, mainly in copper deposits. Except for single molybdenum deposits in the United States, Canada and China, more than one third of them are Molybdenum is recovered from copper ore as a by-product. All molybdenum in Peru and Chile comes from copper concentrators, and a considerable part of molybdenum in the United States and Canada also comes from copper concentrators. [0003] Copper deposits containing molybdenum are ...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/06
Inventor 于雪尹文新陈宏陈新林张向军
Owner SHENYANG RES INST OF NONFERROUS METALS
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