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Pyrrhotite flotation inhibitor, preparation and application thereof as well as mineral processing method for copper-nickel sulfide

A technology of copper-nickel sulfide ore and pyrrhotite, which is applied in flotation, solid separation, etc., can solve the problems of high recovery rate, adsorption influence, and difficult stability of reaction conditions, etc., and achieve shortened production time, improved grade, and separation The effect of the enhanced effect

Inactive Publication Date: 2013-01-30
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology

For example, the publication date is 1996-05-28, and the Canadian patent literature with the publication number CA2082831 discloses a combination inhibitor of pyrrhotite—calcium polysulfide plus polyamine, which is used in flotation containing pyrrhotite, brass When the ores of ore, sphalerite and galena are used, pyrrhotite can be effectively and selectively suppressed, but it is not suitable for the flotation of copper-nickel sulfide ores containing pyrrhotite; 2 Chelating with sodium pyrrhotite can activate the metal ions of pyrrhotite, control the oxidation-reduction potential of pyrrhotite, and make its surface properties suitable for the separation of pentlandite and pyrrhotite, but this method is not suitable for large-scale production. When the reaction conditions are not stable
The research results of Canadian V.Bozkurt showed that the combination of sodium metabisulfite and diethylene triamine can effectively inhibit pyrrhotite, thereby achieving the separation of pyrrhotite and pentlandite, but at the same time confirmed that the combination of inhibitors has a significant effect on the collection of pyrrhotite. Adsorption agent on pentlandite has a certain influence
[0007] For the flotation separation of ores containing pyrrhotite, pentlandite, and chalcopyrite, due to the close symbiosis of the former two in general, it has not been found in domestic and foreign related research that pyrrhotite The ore has high-efficiency selective suppression, but basically has no inhibitory effect on the flotation of copper and nickel, so there is no good way to ensure a high recovery rate while ensuring a high grade of nickel concentrate

Method used

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  • Pyrrhotite flotation inhibitor, preparation and application thereof as well as mineral processing method for copper-nickel sulfide
  • Pyrrhotite flotation inhibitor, preparation and application thereof as well as mineral processing method for copper-nickel sulfide

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Experimental program
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Effect test

Embodiment 1

[0043] Embodiment 1 Get 20 parts by weight of solid sodium carbonate, 5 parts of sodium metabisulfite and 3 parts of triethylenetetramine to configure pyrrhotite inhibitor. In the inhibitor, the total weight of the three components accounts for 2% of the total weight of the inhibitor .

[0044] Specific steps:

[0045] (1) Rough selection and flotation - adding water to the ore material dissociated from the basic monomer to adjust the slurry to a solid mass fraction of 20% in the slurry, and a pH value of 5~6, and then adding 2000 g of sulfuric acid per ton of raw ore to the slurry ( That is, use 2000g of sulfuric acid per ton of raw ore), stir for 2 minutes, then add 100 g of butyl xanthate / ton of raw ore, stir for 1 minute, then add 30 g of butyl ammonium black medicine / ton of raw ore, and stir for 1 minute, then add foaming agent pinitol Oil 20 g / ton of raw ore, and stir for 1min, inflate and stir for 1min, scrape and bubble for 7min, and obtain copper-nickel coarse concen...

Embodiment 2

[0055] The operation of this embodiment is the same as that of Embodiment 1, the difference is:

[0056] When the inhibitor is prepared, 15 parts of solid sodium carbonate, 10 parts of sodium metabisulfite and 5 parts of triethylenetetramine are prepared in parts by weight. In the inhibitor, the total weight of the three components accounts for 5% of the total weight of the inhibitor.

[0057] When beneficiating:

[0058] In step (1), the solid mass fraction contained in the pulp is 30%, the pH value is 5~6, the dosage of sulfuric acid is 3000 g / ton of raw ore, the dosage of butyl xanthate is 150 g / ton of raw ore, and the amount of butyl ammonium black is medicinal The amount is 50 g / ton of raw ore, and the consumption of terpineol oil is 30 g / ton of raw ore;

[0059] In step (1), the amount of sulfuric acid used for the first screening of the tailings was 2000 g / ton of raw ore, the dosage of butyl xanthate was 55 g / ton of raw ore, and the dosage of butylamine black was 50 g / ...

Embodiment 3

[0064] The operation of this embodiment is the same as that of Embodiment 1, the difference is:

[0065] When the inhibitor is prepared, 30 parts of solid sodium carbonate, 7 parts of sodium metabisulfite and 4 parts of triethylenetetramine are prepared in parts by weight. In the inhibitor, the total weight of the three components accounts for 10% of the total weight of the inhibitor.

[0066] When beneficiating:

[0067] In step (1), the solid mass fraction contained in the ore pulp is 25%, the pH value is 5~6, the dosage of sulfuric acid is 5000 g / ton of raw ore, the dosage of butyl xanthate is 130 g / ton of raw ore, and butylammonium black is used for medicine The amount is 40 g / ton of raw ore, and the consumption of terpineol oil is 40 g / ton of raw ore;

[0068] In step (1), the amount of sulfuric acid used in the first sweeping of the tailings was 1700 g / ton of raw ore, the dosage of butyl xanthate was 45 g / ton of raw ore, and the dosage of butylamine black was 40 g / ton o...

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Abstract

The invention provides an inhibitor for pyrrhotite flotation. The inhibitor comprises sodium carbonate, sodium pyrosulfite and triethylene tetramine, pyrrhotite in pulp can be effectively and selectively inhibited, meanwhile basically no affect is brought to the flotation of pentlandite and copper pyrite, and the inhibitor is particularly suitable for the flotation and separation of minerals difficult to select such as high content of pyrrhotite and low quality of cooper-nickel; and the invention further provides a preparation method and an application method of the inhibitor for pyrrhotite flotation, the operations are extremely simple and convenient, and excellent industrial prospect is provided.

Description

technical field [0001] The present invention relates to an inhibitor for ore dressing, in particular to an inhibitor that can selectively inhibit pyrrhotite during flotation of ores containing pyrrhotite, pentlandite, and chalcopyrite (that is, copper-nickel sulfide ore). Mine inhibitors and their preparation and application. Background technique [0002] Most copper-nickel sulfide deposits at home and abroad are associated with pyrrhotite (Fe 1-x S, 0<x<0.223), where X represents the number of deficiencies of iron atoms (that is, the number of vacancies in the pyrrhotite structure). However, due to the different amount of iron atom loss, its composition and structure will change; when the amount of loss increases, the S / Fe ratio increases, and the crystal structure of pyrrhotite will change from hexagonal to monoclinic. Then from weak to strong and buoyancy from poor to good. [0003] Although some studies believe that pyrrhotite is brittle, easy to muddy, and easy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D1/00B03D101/02B03D101/04B03D101/06B03D103/02
Inventor 赵开乐邓伟王昌良廖祥文刘厚明
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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