Method for treating cobalt carbonate mother liquor in preparation process of spherical cobalt carbonate

A technology of cobalt carbonate mother and treatment method, applied in the field of metallurgy, can solve the problems of equipment and product impact, cobalt not being effectively recovered, and reducing the quality of by-products, etc.

Active Publication Date: 2021-09-07
安徽寒锐新材料有限公司
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  • Description
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Problems solved by technology

The direct evaporation method has the following disadvantages: cobalt is not effectively recovered, and enters the by-product ammonium chloride in the form of impurities to directly open the circuit, which not only causes the reduction of cobalt recovery rate, but also increases the impurity content of the by-product ammonium ch

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  • Method for treating cobalt carbonate mother liquor in preparation process of spherical cobalt carbonate
  • Method for treating cobalt carbonate mother liquor in preparation process of spherical cobalt carbonate

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Embodiment Construction

[0030] First, the ion adsorption device will be described below, please refer to figure 2 , the ion adsorption device includes three groups of ion exchange columns, the three groups of ion exchange columns are respectively A group of ion exchange columns, B group of ion exchange columns and C group of ion exchange columns, in the present embodiment, each group of ion exchange columns only includes An ion exchange column, wherein the ion exchange column of group A is resin column A, the ion exchange column of group B is resin column B, and the ion exchange column of group C is resin column C.

[0031] Resin column A, resin column B and resin column C are connected with pipes and valves to form a series two-stage adsorption combination of any two resin columns.

[0032] When working, any two of the three resin columns are used in series, and the other is for standby. When one of the resin columns is saturated with adsorption, it stops running and desorbs. The spare resin column...

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Abstract

The invention discloses a method for treating cobalt carbonate mother liquor in the preparation process of spherical cobalt carbonate. The method comprises the following steps that (1) ion exchange resin adsorption is carried out on the cobalt carbonate mother liquor filtered by white balls to obtain ion adsorption post-liquor and supported resin, the supported resin is desorbed by diluted hydrochloric acid to obtain hydrogen-type resin and acidic post-liquor, the hydrogen-type resin is transformed by ammonia water to obtain ammonium-type resin, the ammonium-type resin obtained after transformation continues to be used for treating the cobalt carbonate mother liquor, and the cobalt carbonate mother liquor is recycled; and (2) after evaporative crystallization is carried out on one part of the ion adsorption post-liquor in the step (1), ammonium chloride crystals and condensed water are obtained, the other part of the ion adsorption post-liquor is used for washing the ammonium-type resin, and only the ion adsorption post-liquor is adopted for washing the ammonium-type resin for the second time. By means of the method, the water treatment capacity can be reduced, the cobalt recovery rate can be improved, and the wastewater treatment difficulty can be reduced.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for treating cobalt carbonate mother liquor in the preparation process of spherical cobalt carbonate. Background technique [0002] At present, cobalt carbonate is mostly obtained by chemical precipitation with cobalt chloride solution as raw material and ammonium bicarbonate as precipitant. After the reaction, a small amount of cobalt in the mother liquor produced after solid-liquid separation of cobalt carbonate slurry needs to be recovered. The current The process is to directly evaporate the mother liquor containing a small amount of cobalt with an evaporation crystallization device such as MVR, and the cobalt directly enters the by-product ammonium chloride. The other is to extract and recover the cobalt in the mother liquor. The direct evaporation method has the following disadvantages: cobalt is not effectively recovered, and enters the by-product ammonium chloride in t...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B3/42C22B23/00C01C1/16C01G51/06
CPCC22B7/006C22B3/42C22B23/0461C22B23/0453C01C1/164C01G51/06C01G51/003C01P2004/32Y02P10/20
Inventor 杜晗朱治军李世华王朝安
Owner 安徽寒锐新材料有限公司
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