Refining method of tin-containing lead bullion and lead refining production method

A production method and crude lead technology, applied in the metallurgical field, can solve the problems of long electrolytic refining time, affecting the production efficiency of lead refining, etc., and achieve the effects of high tin content, energy saving, and current efficiency improvement.

Inactive Publication Date: 2014-06-11
HUNAN SHUI KOU SHAN NONFERROUS METALS GRP
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Problems solved by technology

[0005] Furthermore, due to the dissolution and separation of tin during the electrolysis process, the electrolytic refining takes a long time, which affects the efficiency of lead refining production

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  • Refining method of tin-containing lead bullion and lead refining production method

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Embodiment Construction

[0028] The embodiment of the invention discloses a refining method of tin-containing crude lead, which can remove tin impurities in raw materials after fire refining and before electrolytic refining, so as to avoid the waste of electric energy during the electrolytic refining process. The embodiment of the present invention also discloses a lead refining production method, which applies the above-mentioned refining method of tin-containing crude lead, and does not waste electric energy during the electrolytic refining process.

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creati...

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Abstract

The invention discloses a refining method of tin-containing lead bullion. The refining method of the tin-containing lead bullion comprises the following steps: (1) heating a molten lead raw material to a temperature which can ensure that tin impurities in the molten lead raw material are oxidized; (2) adding sodium hydroxide to the molten lead raw material, and stirring so as to ensure that the tin impurities in the molten lead raw material are rapidly and fully oxidized to form stannic oxide slag; (3) fishing out the stannic oxide slag. The refining method of the tin-containing lead bullion has the advantages that tin in the lead raw material can be removed, the problem that as the electrolytic potential of tin is close to the electrolytic potential of lead, tin is dissolved in a positive pole and separated out in a negative pole in an electrolytic refining production process, is avoided, the current efficiency is improved, and the electric energy is saved. The invention also discloses a lead refining production method by applying the refining method of the tin-containing lead bullion. The power consumption can be reduced during electrolytic refining.

Description

technical field [0001] The invention relates to the technical field of metallurgy, and more specifically, relates to a refining method of tin-containing crude lead, and also relates to a refining production method of lead. Background technique [0002] Lead raw materials mainly include copper impurities and tin impurities. Lead refining production methods include two processes: fire refining and electrolytic refining. Specifically, fire refining is carried out first to remove part of copper, and part of tin and antimony, and then electrolytic refining is carried out to obtain Get refined lead. [0003] However, the content of tin impurities in the lead raw material is still relatively large after the fire refining process, and the electrode potential of metallic tin is similar to that of lead (-0.136V for tin and -0.127V for lead). During the process, metal tin can be dissolved at the anode and precipitated at the cathode, resulting in low current efficiency and wasting ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B13/08
CPCY02P10/20
Inventor 阳耀子杨戈李湘汉李云彬刘泽贵杨际幸唐荣
Owner HUNAN SHUI KOU SHAN NONFERROUS METALS GRP
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