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Pressure leaching method of zinc sulfide concentrate

A technology for pressure leaching of zinc sulfide concentrate, applied in the field of metallurgy, can solve the problems of increasing the labor intensity and danger of operators, high unit consumption of sulfuric acid, increasing the production cost of pressure leaching of zinc sulfide concentrate, etc. The effect of reducing labor intensity and avoiding safety accidents

Inactive Publication Date: 2012-07-18
YUNNAN METALLURGICAL GROUP +2
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Problems solved by technology

[0002] During the pressure leaching process of zinc sulfide concentrate, in order to ensure the leaching rate of zinc, a large amount of concentrated sulfuric acid needs to be added to the system, resulting in high unit consumption of sulfuric acid, which not only increases the production cost of zinc sulfide concentrate pressure leaching, but also Increase the labor intensity of the operator and the danger in the production process

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  • Pressure leaching method of zinc sulfide concentrate
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Embodiment Construction

[0022] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] The method for the pressure leaching of zinc sulfide concentrate according to the embodiment of the present invention is described below.

[0024] The method for the zinc sulfide concentrate pressure leaching according to the embodiment of the present invention comprises the following steps:

[0025] (a) supply zinc sulfide concentrate powder and acid solution into the autoclave;

[0026] (b) feed oxygen into the autoclave;

[0027] (c) keeping the autoclave at a predetermined temperature and a predetermined pressure, and subjecting the zinc sulfide concentrate powder to pressure acid leaching for a predetermined time at a certain stirring speed, so as to obtain...

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Abstract

The invention discloses a pressure leaching method of zinc sulfide concentrate. The method comprises the following steps of: (a) supplying zinc sulfide concentrate powder and an acid solution into an autoclave; (b) introducing oxygen into the autoclave; (c) keeping the autoclave under the conditions with preset temperature and preset pressure and performing pressure leaching on the zinc sulfide concentrate powder at a certain stirring speed for a preset period of time so as to get leachate and leaching residue; and (d) performing the treatment on the leachate for preparation. By utilizing the pressure leaching method of the zinc sulfide concentrate according to the embodiment of the invention, sulfuric acid can be produced in the autoclave, and concentrated sulfuric acid does not need to be supplemented into a system during the pressure leaching process, so that the production cost can be greatly reduced, and the labor intensity of operation staff and the risk during the production process can be further reduced.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for pressure leaching of zinc sulfide concentrate. Background technique [0002] During the pressure leaching process of zinc sulfide concentrate, in order to ensure the leaching rate of zinc, a large amount of concentrated sulfuric acid needs to be added to the system, resulting in high unit consumption of sulfuric acid, which not only increases the production cost of zinc sulfide concentrate pressure leaching, but also Increase the labor intensity of the operator and the danger in the production process. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. [0004] For this reason, an object of the present invention is to propose a method for pressure leaching of zinc sulfide concentrate, by which sulfuric acid can be produced in the autoclave, so that it is not necessary to replenish conce...

Claims

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Application Information

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IPC IPC(8): C22B3/06C22B19/00
CPCY02P10/20
Inventor 王吉坤毕红兴余继勇毕红林朱绍菊王世宇闫江峰张红耀
Owner YUNNAN METALLURGICAL GROUP
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