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Slag-forming constituents used for lead and lead-base alloy fusion casting

The technology of lead-based alloy and slag-forming agent is applied in the field of slag-forming agent for lead and lead-based alloy melting and casting, and can solve the problems of poor slag-forming agent, affecting the quality of lead ingots and lead alloy products, producing irritating odor, and the like, Achieve the effect of improving smelting and use quality, good environmental safety, and ensuring environmental protection requirements

Active Publication Date: 2006-02-08
株洲冶炼集团有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Domestic lead and lead-based alloy production ingots and lead alloys produce large oxidation when used, and the presence of oxides in the lead liquid seriously affects the quality of lead ingots and lead alloy products, and it will cause a large amount of oxidized slag when salvaging the surface when casting products. Valuable metals are wasted, resulting in the disadvantage of low metal recovery rate
At present, most lead-based products are produced and used without slagging treatment, and only a few lead-based product manufacturers use slagging agents (mainly pulverized coal plus charcoal), which produce relatively large smoke and pungent odors (mainly There are SOs 2 Toxic gas), and the effect of the slagging agent is poor, and the separation between the slag and the metal is poor, resulting in agglomeration of the slag body after slagging, a lot of metal entrainment, and low metal direct recovery.
Although the existing (making) slagging agent (such as pulverized coal plus charcoal slagging) products can improve the above-mentioned defects to a certain extent, there are environmental protection defects, such as large smoke and dust, and irritating odor. to have a greater adverse effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] CaF 2 70%, Na 3 AlF 6 3%, KCl3%, NaCl8%, ZnCl 2 2%, C powder 12%, NH 4 Cl2%, which contains the impurities brought by the above components. 20kg of slagging agent was added to the 80-ton lead melting pot. After the slagging treatment, the amount of slag was reduced from 10 tons to 6.5 tons, and the slag changed from the original gray block to yellow powder.

Embodiment 2

[0014] CaF 2 45%, Na 3 AlF 6 4%, KCl5%, NaCl6%, ZnCl 2 3%, C powder 35%, NH 4 Cl2%, which contains the impurities brought by the above components. Add 5kg of slagging agent to the 20-ton alloy pot. After slagging treatment, the amount of slag is reduced from about 200 kg to 100 kg, and the slag is yellow powder.

Embodiment 3

[0016] CaF 2 50%, Na 3 AlF 6 3%, KCl3%, NaCl10%, ZnCl22%, C powder 30%, NH 4 Cl2%, which contains the impurities brought by the above components. The 500 kg alloy pot is produced for 8 hours and the grid capacity is 2 tons. Add 2 kg of slagging agent, and the slag removed from the original 120 kg is reduced to 50 kg. The original sticky slag has all become powdery slag.

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PUM

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Abstract

The invention relates to a slag-forming constituent in casting lead and lead-base alloy, which comprises 35-70wt% of CaF2, 3-5wt% of Na3AlF6, 3-8wt% of KCl, 8-10wt% of NaCl, 2-5wt% of ZnCl2, 20-50wt% of C powder and 3-5wt% of NH4Cl. The invention makes use of the principle that inorganic salt can improve interfacial force and boundary tension between lead fondant and oxidate so as to de-slag in casting and using of lead-base product, improve quality of casting and using, ensure slag to carry on powder, and recovery metal efficiently. The invention the properties of simple preparation, low input of apparatus and capital and extensive usages such as lead ingot casting, lead-base alloy product casting and lead-base product later usage.

Description

technical field [0001] The invention relates to a slagging agent for melting and casting of lead and lead-based alloys. The product is used for removing slag in melting and casting of lead and lead-based alloys and for removing slag and purifying molten metal when lead-based alloys are used. Background technique [0002] Domestic lead and lead-based alloy production ingots and lead alloys produce large oxidation when used, and the presence of oxides in the lead liquid seriously affects the quality of lead ingots and lead alloy products, and it will cause a large amount of oxidized slag when salvaging the surface when casting products. Valuable metals are wasted, resulting in the disadvantage of low metal recovery rate. At present, most lead-based products are produced and used without slagging treatment, and only a few lead-based product manufacturers use slagging agents (mainly pulverized coal plus charcoal), which produce relatively large smoke and pungent odors (mainly T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D1/00
Inventor 张伟窦传龙匡立春刘朗明王全覃虹
Owner 株洲冶炼集团有限责任公司
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