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Method for producing high-stibium crude lead

A crude lead and charge technology is applied in the field of producing high antimony crude lead, and achieves the effects of low production cost, low labor intensity and simple process

Active Publication Date: 2010-09-15
YUNNAN CHIHONG ZINC & GERMANIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No need to add iron filings for replacement

Method used

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  • Method for producing high-stibium crude lead
  • Method for producing high-stibium crude lead

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Copper scum or ingot slag is treated in the converter by the soda-iron filing method, and the reaction formula is:

[0014] 4PbS+4Na 2 CO 3 =4Pb+3Na 2 S 3 +Na 2 SO 4 +4CO 2

[0015] As 2 o 5 (Sb 2 o 5 )+4Na 2 CO 3 = 2Na 2 O·As 2 o 5 (Sb 2 o 5 )+3CO 2

[0016] PbS+Fe=Pb+FeS

[0017] Ingredients ratio (Kg):

[0018] copper dross or ingot

slag

soda

pulverized coal

Antimony-containing dust and slag

Iron filings

100

6

2

45

8

[0019] Adding soda is to reduce the melting point of slag and matte, form sodium matte, reduce lead content in slag and make arsenic and antimony form sodium arsenate and sodium antimonate to form slag, and remove part of arsenic and antimony;

[0020] The purpose of adding pulverized coal is to maintain a certain reducing atmosphere in the furnace and prevent the oxidation of sulfide, so as to ensure that there is enough sulfur for matte making...

Embodiment 2

[0023] Embodiment two batching ratio (Kg):

[0024] copper dross or cast

Embodiment 3

[0025] Embodiment three batching ratio (Kg):

[0026] copper dross or cast

Ingot slag

soda

pulverized coal

Antimony-containing dust and slag

Iron filings

100

10

4

40

0

[0027] According to production practice, the third embodiment of the present invention is the best batching ratio: copper scum 100Kg, antimony-containing dust and slag 40Kg, soda 10Kg, pulverized coal 4Kg, and other auxiliary materials can be omitted. The production process is as follows: each furnace feeds 14 tons, feeds for half an hour, smelts for 7 hours, slag and matte discharge for 1.5 hours, lead for 3 hours, and the total operation time is 12 hours per furnace. No iron filings are used, which can reduce the replacement process of iron filings. During the entire smelting process, sufficient furnace temperature must be strictly maintained.

[0028] The best batching technical and economic index of the present inventi...

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Abstract

The invention relates to a method for manufacturing antimony-rich lead bullion. The manufacturing technique process of the invention comprises furnace charge adding, heating up and melting, deslagging, iron chips adding and replacing, depositing and separating, sulphonium discharging, cooling down and lead obtaining. The furnace charge proportion adopts the proposal that auxiliary materials are required to be prepared for copper dross slag or ingot casting slag per 100 kg: 6 to 10 kg of soda, 2 to 4 kg of pulverized coal, antimony-bearing smoke, and 5 to 50 kg slag. The method has the advantages that the intermediate slag and the smoke produced in the manufacturing process of electrolytic lead and noble metal can be processed effectively, and the valuable metal such as Ag, Sb, Pb, etc. can be recycled effectively. The manufacturing method has the obvious advantages that the production efficiency is high, the labor intensity is low, and the production cost is low.

Description

Technical field: [0001] The invention belongs to the field of lead metallurgy, in particular to a method for producing high-antimony crude lead. Background technique: [0002] In the process of lead electrolytic refining, antimony forms a strong and loose porous network structure on the surface of the anode, wrapping the anode slime so that it has proper adhesion strength and does not fall off. If the antimony content in the anode is too low, the anode slime is easy to shatter and fall off, making the electrolyte turbid, the precious metal is difficult to recover, and the quality of the precipitated lead is difficult to guarantee; if the antimony content in the anode is too high, the anode slime will become hard and difficult to wash off. Therefore, the total content of antimony and arsenic (Sb+As) in the lead anode is controlled at 0.8-2.0%. Under normal circumstances, the crude lead and antimony content obtained by reduction smelting is low, and it needs to be adjusted to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B13/02
CPCY02P10/20
Inventor 翟灿斌张勇钟文晏勇张红旺王瑞山袁明建杨华王斌
Owner YUNNAN CHIHONG ZINC & GERMANIUM