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Method for flotation separation of chalcopyrite and pyrite through H2O2

A technology of H2O2 and chalcopyrite, applied in flotation, solid separation, etc., can solve the problems of low chalcopyrite grade and recovery rate, and achieve the effects of increasing buoyancy, hydrophilicity, and hydrophobicity

Active 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

[0005] The object of the present invention is to overcome above-mentioned technical deficiency, provide a kind of utilizing H2O2 flotation separation The method of chalcopyrite and pyrite solves the technical problem of low chalcopyrite grade and recovery rate in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment proposes a method using H 2 o 2 The method for flotation separation of chalcopyrite and pyrite comprises the following steps:

[0027] S1, mixing chalcopyrite, pyrite and simulated seawater to obtain ore slurry; wherein, the particle size of chalcopyrite and pyrite is less than 150 μm; the total mass of the chalcopyrite and the pyrite is the same as that of simulated seawater The material ratio is 1g:25mL; the simulated seawater mainly contains the following components: 0.47mol / L NaCl, 0.01mol / L KCl, 0.01mol / L CaCl 2 , 0.025mol / L of MgCl 2 , 0.0018mol / L NaHCO 3 , 0.028mol / L of MgSO 4 and 0.00087mol / L of KBr.

[0028] S2. Adjust the pH of the pulp to 8.0, stabilize the pH value for 6 minutes, and then add the inhibitor H 2 o 2 Stir for 6min, then add the butylxanthate according to the ratio of 200g:1t of the butylxanthate to the pulp material, then aerate flotation for 10min, the flotation foam obtained is chalcopyrite, and the product in the tank ...

Embodiment 2

[0030] This embodiment proposes a method using H 2 o 2 The method for flotation separation of chalcopyrite and pyrite comprises the following steps:

[0031] S1, mixing chalcopyrite, pyrite and simulated seawater to obtain ore slurry; wherein, the particle size of chalcopyrite and pyrite is less than 150 μm; the total mass of the chalcopyrite and the pyrite is the same as that of simulated seawater The material ratio is 1g:30mL; the simulated seawater mainly contains the following components: 0.46mol / L NaCl, 0.015mol / L KCl, 0.015mol / L CaCl 2 , 0.025mol / L of MgCl 2 , 0.002mol / L NaHCO 3 , 0.03mol / L of MgSO 4 and 0.0009mol / L of KBr.

[0032] S2. Adjust the pH of the pulp to 7.5, stabilize the pH value for 10 minutes, and then add the inhibitor H 2 o 2 Stir for 10min, then add the butylxanthate according to the material ratio 250g:1t of the butylxanthate to the pulp, then inflate flotation for 15min, the flotation foam obtained is chalcopyrite, and the product in the tank i...

Embodiment 3

[0034] This embodiment proposes a method using H 2 o 2 The method for flotation separation of chalcopyrite and pyrite comprises the following steps:

[0035]S1, mixing chalcopyrite, pyrite and simulated seawater to obtain ore slurry; wherein, the particle size of chalcopyrite and pyrite is less than 150 μm; the total mass of the chalcopyrite and the pyrite is the same as that of simulated seawater The material ratio is 1g:28mL; the simulated seawater mainly contains the following components: 0.45mol / L NaCl, 0.02mol / L KCl, 0.01mol / L CaCl 2 , 0.027mol / L of MgCl 2 , 0.0019mol / L NaHCO 3 , 0.028mol / L of MgSO 4 and 0.00089mol / L of KBr.

[0036] S2. Adjust the pH of the pulp to 9.0, stabilize the pH value for 8 minutes, and then add the inhibitor H 2 o 2 Stir for 5min, then add the butylxanthate according to the material ratio of the butylxanthate to the pulp 220g:1t, then inflate flotation for 12min, the flotation foam obtained is chalcopyrite, and the product in the tank is ...

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Abstract

The invention discloses a method for flotation separation of chalcopyrite and pyrite through H2O2, and belongs to the technical field of mineral processing. The method for flotation separation of the chalcopyrite and the pyrite comprises the steps of S1, mixing the chalcopyrite, the pyrite and simulated seawater to obtain ore pulp, wherein the particle sizes of the chalcopyrite and the pyrite are less than 150 microns; and S2, regulating the pH value of the ore pulp to 7.5-9.0, then adding H2O2, then adding a collecting agent, and then conducting air inflation flotation, wherein the flotation foam is chalcopyrite. According to the method, the grade and the recovery rate of the chalcopyrite are improved, the highest yield of the concentrate is 55.01%, the highest grade of copper in the concentrate is 26.06%, and the highest recovery rate of the chalcopyrite is 90.05%.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a 2 o 2 A method for separating chalcopyrite and pyrite by flotation. Background technique [0002] Copper resources are one of the most widely used important basic raw materials in the development of the national economy. They are widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields. It is second only to aluminum in the consumption of non-ferrous metal materials in my country. [0003] Chalcopyrite is an important copper-containing mineral, which is commonly obtained by flotation. The flotation process consumes a lot of fresh water resources. Using seawater instead of fresh water as the flotation medium has a good application prospect. [0004] At present, the mainstream flotation scheme for copper-sulfur separation is to add a large amount of lime as an inhibitor to flotation chalcopyr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B1/00B03B1/04B03D103/04
CPCB03D1/025B03B1/00B03B1/04B03D2203/04Y02P10/20
Inventor 李育彪刘瑞庆杨旭段婉青
Owner WUHAN UNIV OF TECH
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