Covellite and pyrite flotation separation collecting agent and preparation method thereof

A technology of pyrite and collector, which is applied in the field of collector and preparation of flotation separation of copper blue and pyrite, can solve the problem that the purity and yield of synthetic products cannot be guaranteed, and can reduce the tension Electron induction effect, increasing electron density, strong collecting effect

Inactive Publication Date: 2019-04-19
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the organic and inorganic substances cannot fully react in the aqueous phase system, and the purity and yield of the synthesized product cannot be guaranteed. The organic solvent system must face the problems of solvent separation and recovery.

Method used

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  • Covellite and pyrite flotation separation collecting agent and preparation method thereof
  • Covellite and pyrite flotation separation collecting agent and preparation method thereof
  • Covellite and pyrite flotation separation collecting agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation of embodiment 1 copper blue and pyrite single mineral

[0021] The preparation method of the single mineral used in the test is as follows: artificially select high-purity copper blue and pyrite ore nuggets, crush, hand-select and purify, grind, and sieve to obtain -0.014+0.045mm particle size products as test samples for future use, of which , After the copper blue is ground, it has been shaken several times and dried naturally to obtain a high-purity product. The chemical analysis results of single minerals are shown in Table 1.

[0022] Table 1 Chemical analysis results of single minerals

[0023]

Embodiment 2

[0024] The synthesis of embodiment 2 ethyl xanthate ethyl acetate

[0025] Add 19.1g of sodium ethyl xanthate into a 250ml round-bottomed three-neck flask to prepare a 2mol / L aqueous solution, slowly add 10ml of ethyl chloroacetate dropwise while stirring, the dropping speed is 1~2 drops / second, and the stirring speed is 400r / min, after the ethyl chloroacetate is completely dripped, react at 50°C for 3 hours. After the reaction, let the cloudy solution stand for stratification, wash the oily solution in the lower layer with distilled water for 3 times, dry it with anhydrous magnesium sulfate overnight, and weigh it , to obtain product 18.8g. After analysis, the product content was determined to be 98.7%, and the yield was 96.39%. The infrared spectrum analysis and nuclear magnetic resonance analysis spectra of the product are shown in figure 1 with figure 2 .

Embodiment 3

[0026] The synthesis of embodiment 3 isopropyl xanthate ethyl acetate

[0027] Add 21.1g of sodium isopropylxanthate into a 250ml round-bottomed three-neck flask to prepare a 2mol / L aqueous solution, slowly add 10ml of ethyl chloroacetate dropwise while stirring, the dropping speed is 1~2 drops / second, and the stirring speed is 400r / min, react at 50°C for 3 hours after all the ethyl chloroacetate is dripped, after the reaction, put the turbid solution to stand for stratification, wash the oily solution in the lower layer with distilled water for 3 times, dry it with anhydrous magnesium sulfate overnight and weigh Weight, obtain product 19.7 grams. After analysis, the content of the product was determined to be 98.69%, and the yield was 95.49%. The infrared spectrum analysis and nuclear magnetic resonance analysis spectra of the product are shown in image 3 with Figure 4 .

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PUM

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Abstract

The invention provides a covellite and pyrite flotation separation collecting agent xanthate ethyl acetate and a preparation method thereof. The preparation method comprises the steps that alkyl xanthate and ethyl chloroacetate serve as raw materials and react for 1-4 hours at the reaction temperature of 10-70 DEG C, and xanthate ethyl acetate is generated, wherein the molar ratio of the materialsis (0.95-1.25):1. The reaction operation is simple, and high-quality products can be obtained just through simple washing and drying. The collecting agent prepared through the preparation method hasbetter collecting performance on covellite than ammonium dibutyl dithiophosphate, has much weaker collecting performance on pyrite than ammonium dibutyl dithiophosphate, and can achieve effective separation of covellite and pyrite.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a collector for flotation separation of copper blue and pyrite and a preparation method thereof. Background technique [0002] With the continuous development of the economy, the demand for copper is gradually increasing. There are many types of copper mineral resources in my country, mainly copper sulfide ores, and copper-sulfur symbiotic ores are relatively common, so it is of great significance to improve the level of copper-sulfur flotation separation technology. Copper blue (CuS), as a typical secondary copper sulfide ore, is also one of the main sources of copper resources in my country. At present, for copper blue and pyrite ores, the agent system of using butylammonium black medicine as a collector under the lime high alkali process is mainly adopted. This method uses lime as a pyrite inhibitor, which is not conducive to the recovery of copper and associated pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/02B03D103/04
CPCB03D1/012B03D2201/02B03D2203/04
Inventor 马英强唐浪峰李国尧鲁军印万忠衷水平丛颖盛秋月
Owner FUZHOU UNIV
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