Preparation method of inhibitors for arsenic-containing sulfide minerals in copper tailings

A copper tailings and inhibitor technology, applied in solid separation, flotation and other directions, can solve the problems of high alkalinity of copper tailings, mutual interference of surface oxide minerals, difficult recovery of arsenopyrite, etc., and achieve the effect of inhibiting the surface of arsenopyrite.

Inactive Publication Date: 2016-08-10
JIANGXI YIYUAN REGENERATION RESOURCE CO LTD
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Problems solved by technology

[0005] In order to solve the problem of difficult recovery of arsenopyrite in copper tailings, and aiming at the properties of arsenopyrite in copper tailings, the present invention provides a method for preparing an ...

Method used

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Embodiment

[0015] The preparation method of the arsenic-containing sulfide mineral inhibitor of the present invention comprises the following steps:

[0016] (1) Prepare solution A: weigh 30 grams of oxidized thiourea, 10 grams of 2-thiohydantoin and 3 grams of sodium hydroxide according to a weight ratio of 30:10:3, dissolve in 172 grams of water, and stir for 10 minutes. It is formulated into a solution A with a weight concentration of 20%;

[0017] (2) Prepare solution B: weigh 70 grams of fulvic acid and 10 grams of hydrogen peroxide according to a weight ratio of 70:10, dissolve in 200 grams of water, react for 10 minutes, add 40 grams of 5% sodium carbonate aqueous solution, and prepare a weight concentration of 20 grams. % of solution B;

[0018] (3) Preparation of solution C: 100 grams of solution A and 100 grams of solution B were mixed, reacted for 30 minutes to form a uniform and stable yellow-brown aqueous solution, and then 30 grams of 5% pine bark tannin extract was added ...

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Abstract

The invention discloses a preparation method of inhibitors for arsenic-containing sulfide minerals in copper tailings. According to the method, for the characteristic that the surfaces of arsenopyrite and pyrites in the copper tailings have been oxidized, the inhibitor with the electrochemistry reducibility is used for eliminating oxidation products on the surfaces of the arsenopyrite and the pyrites in the copper tailings; and meanwhile, by adding the inhibitor which can generate the selective inhibition effect on the arsenopyrite, the surfaces of the arsenopyrite are oxidized to generate precipitate, and therefore separation of the arsenopyrite and the pyrites in the copper tailings is achieved. The method includes the following steps that a solution A, a solution B and a solution C are prepared, and concentration and crystallization are conducted. According to the preparation method, through the inorganic and organic compound reaction, a product with the complicated complexing structure and the electrochemistry reducibility is formed, and arsenate on the surfaces of the arsenopyrite and sulfite on the surfaces of the pyrites can be removed; and meanwhile, by means of the reducibility and coordination capacity of thiourea groups and benzene ring quinone groups, inhibition on the surfaces of the arsenopyrite is achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical beneficiation, and in particular relates to a preparation method of an inhibitor of arsenic-containing sulfide minerals in copper tailings, which is suitable for the flotation separation of arsenic and sulfur in copper beneficiation tailings. Background technique [0002] my country is rich in copper resources. Due to the low content of copper in the ore, a large amount of tailings will be produced in the process of copper beneficiation. The problem of arsenic pollution in water bodies is harmful to people's lives. Therefore, it is of great significance to recover arsenic minerals in copper tailings. [0003] The arsenic-containing minerals in copper tailings are generally arsenopyrite, arsenophyllite and pyrite, among which arsenopyrite has the highest arsenic content and is the most difficult to recover in tailings. When arsenopyrite coexists with pyrite, it not only affects the quality of sulf...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02
Inventor 林蜀勇王金虎陈波王梦成
Owner JIANGXI YIYUAN REGENERATION RESOURCE CO LTD
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