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Alkaline refining method of lead bullion

A crude lead and alkaline technology, which is applied in the field of crude lead refining, can solve the problems of reducing lead purity and removing impurities, and achieves the effects of low residue, fast reaction speed and easy processing

Inactive Publication Date: 2015-04-29
WUHU JINLONG MOLD FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that impurities such as Sn, As, and Sb cannot be effectively removed in the existing crude lead smelting process, thereby reducing the lead purity, the present invention provides an alkaline refining method for crude lead, by adding Saltpeter, after oxidizing Sn, As, and Sb into high-valent oxides, forms corresponding sodium salts with NaOH, so as to separate from lead and achieve the purpose of improving the purity of lead

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of alkaline refining method of rough lead, comprises the following steps:

[0023] (1) Preparation of solution:

[0024] The crude lead solution is released from the blast furnace and transported to the refining pot through the lead holding pot;

[0025] (2) Add saltpeter:

[0026] A certain amount of saltpeter is added to the refining pot and stirred by a mechanical stirring device;

[0027] (3) Add caustic soda:

[0028] A certain amount of caustic soda is added into the refining pot and stirred by a mechanical stirring device;

[0029] (4) Temperature control:

[0030] Control the temperature of the lead solution in the range of 680-690K;

[0031] (5) Slag removal:

[0032] Use slag removal equipment to remove the oxidized slag floating on the lead solution.

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PUM

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Abstract

The invention discloses an alkaline refining method of lead bullion and belongs to the field of non-ferrous metals. The method comprises the following steps: (1) preparing a liquid; (2) adding saltpeter; (3) adding caustic soda; (4) controlling the temperature; and (5) deslagging, The method disclosed by the invention can be used for solving the problem that the purity of lead is reduced because impurities such as Sn, As and Sb cannot be effectively removed during the existing smelting process of the lead bullion, and has the advantages of being simple in process, low in cost and easy to process.

Description

technical field [0001] The invention belongs to the field of nonferrous metals, and more specifically relates to a method for refining crude lead. Background technique [0002] Lead is widely used in industry at present, especially in the electrical industry sector, where it is mainly used to manufacture batteries, various cable protection skins, and fuses. Lead plates and lead pipes are often used as acid-resistant linings and anti-corrosion covers for smelting and chemical equipment, and lead is also used as protective layers and protective screens in the atomic energy industry and X-rays. Lead compounds are used in the pigment industry, glass industry, petroleum industry and pharmaceutical sectors. However, in the process of processing and refining lead, it contains impurities such as Sn, As, and Sb, which reduces the purity of lead and is a harmful substance. It is necessary to try to remove it from lead. Contents of the invention [0003] Aiming at the problem that ...

Claims

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Application Information

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IPC IPC(8): C22B13/06
Inventor 李大志
Owner WUHU JINLONG MOLD FORGING
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