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Method for flotation separation of chalcopyrite and molybdenite through simulated seawater soaking

A technology for simulating seawater and chalcopyrite, applied in flotation, solid separation, etc., can solve the problem of molybdenum in flotation, and achieve the effect of strong oxidation

Pending Publication Date: 2022-02-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome above-mentioned technical deficiency, provide a kind of method utilizing simulated seawater immersion flotation to separate chalcopyrite and molybdenite, solve the problem that is difficult to float from chalcopyrite under the situation of not using inhibitor in the prior art. Technical Issues in Selecting Molybdenum

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The present embodiment proposes a method for flotation separation of chalcopyrite and molybdenite by immersion in simulated seawater, comprising the following steps:

[0047] S1. Mix the mixed ore of chalcopyrite and molybdenite with simulated seawater, and then soak at 28°C for 14 days to obtain ore slurry; wherein, the mass ratio of chalcopyrite and molybdenite is 1.5:1, and the chalcopyrite And the material ratio of the total mass of the molybdenite and the simulated seawater is 1g: 140mL; the simulated seawater adopted mainly contains the following components: 0.47mol / L of NaCl, 0.02mol / L of KCl, 0.015mol / L CaCl 2 , 0.03mol / L of MgCl 2 , 0.002 mol / L NaHCO 3 , 0.03mol / L of MgSO 4 and 0.0009mol / L of KBr;

[0048] S2. Carry out aerated flotation for the ore pulp obtained in step S1 for 10 min, and adjust the pH of the ore pulp to 10 with sodium hydroxide, and float molybdenum concentrate; 1300rpm, the gas filled is air;

[0049] S3. Collect the flotation concentr...

Embodiment 2

[0052] The present embodiment proposes a method for flotation separation of chalcopyrite and molybdenite by immersion in simulated seawater, comprising the following steps:

[0053] S1. Mix the mixed ore of chalcopyrite and molybdenite with simulated seawater, and then soak at 25°C for 21 days to obtain ore slurry; wherein, the mass ratio of chalcopyrite and molybdenite is 1:1, and the chalcopyrite And the material ratio of the total mass of the molybdenite to the simulated seawater is 1g: 140mL; the simulated seawater used mainly contains the following components: 0.45mol / L of NaCl, 0.018mol / L of KCl, 0.02mol / L CaCl 2 , 0.027mol / L of MgCl 2 , 0.0019 mol / L NaHCO 3 , 0.03mol / L of MgSO 4 and 0.00088mol / L of KBr;

[0054] S2, the described ore pulp obtained in step S1 is aerated and floated for 15min, and the pH of the ore pulp is adjusted to 9 by sodium hydroxide, and the molybdenum concentrate is obtained by flotation; the aeration rate of the aerated flotation is 0.15 L / mi...

Embodiment 3

[0058] The present embodiment proposes a method for flotation separation of chalcopyrite and molybdenite by immersion in simulated seawater, comprising the following steps:

[0059] S1. Mix the mixed ore of chalcopyrite and molybdenite with simulated seawater, and then soak at 15°C for 24 days to obtain ore slurry; wherein, the mass ratio of chalcopyrite and molybdenite is 1:1, and the chalcopyrite And the ratio of the total mass of the molybdenite to the solid material in the simulated seawater is 1 g:150mL; the simulated seawater used mainly contains the following components: 0.46mol / L of NaCl, 0.02mol / L of KCl, 0.01mol / L CaCl 2 , 0.025mol / L of MgCl 2 , 0.002 mol / L NaHCO 3 , 0.029mol / L of MgSO 4 and 0.0009mol / L of KBr;

[0060] S2, the described ore pulp obtained in step S1 is aerated and floated for 12min, and the pH of the ore pulp is adjusted to 10 by sodium hydroxide, and the molybdenum concentrate is obtained by flotation; the aeration rate of the aerated flotation...

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Abstract

The invention discloses a method for flotation separation of chalcopyrite and molybdenite through simulated seawater soaking, and belongs to the technical field of mineral processing. The method for flotation separation of the chalcopyrite and the molybdenite comprises the steps of S1, mixing the chalcopyrite, the molybdenite and simulated seawater, and then soaking for 14-28 d to obtain ore pulp; and S2, conducting air inflation flotation on the ore pulp obtained in the step S1, regulating the pH to be 9-10, and obtaining concentrate through flotation. According to the method, copper-molybdenum flotation separation can be achieved, no inhibitor is adopted in the whole method, the highest yield of molybdenum concentrate is 47.8%, the highest recovery rate is 79.4%, and the molybdenum grade is 44.1%.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for separating chalcopyrite and molybdenite by using simulated seawater immersion flotation. Background technique [0002] Chalcopyrite (CuFeS 2 ) is the main mineral of copper and one of the most important copper mineral resources on the earth. Molybdenite (MoS 2 ) is the main occurrence mineral of molybdenum, which is a layered structure, mostly belonging to the trigonal or hexagonal crystal system. Except for a very small number of molybdenites that exist as a single deposit, most of them are widely associated with sulfide minerals, especially with copper sulfide minerals. Chalcopyrite and molybdenite have little difference in wettability, close buoyancy, and are easily captured by xanthate, making it difficult to achieve efficient separation of copper and molybdenum. To separate copper and molybdenum, a large amount of chemicals are used for flotation....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B1/00B03B1/04
CPCB03D1/025B03B1/00B03B1/04B03D2203/04
Inventor 李育彪杨旭段婉青刘瑞庆
Owner WUHAN UNIV OF TECH
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