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

Abstract

The invention relates to a slagging agent for melting and casting of lead and lead-based alloys. Its composition and weight percentage are: CaF245%~70%, Na3AlF63%~4%, KCl 3%~5%, NaCl 8%~10%, ZnCl22%~3%, C powder 12%~35%, NH4Cl 2 %; The present invention utilizes some inorganic salts to improve the surface tension and interfacial tension principle between the lead melt and the oxide, and adopts a reasonable proportion to make lead ingots and lead-based alloys fully Slag removal and purification can improve the quality of smelting and use, and ensure that the slag body is powdery after salvaging slag, with very little metal entrainment, and the entrained metal can flow out effectively, further recovering metal, and at the same time ensuring good environmental protection and safety. The preparation of the invention is simple, and the input equipment and capital are less. It can be used for melting and casting of lead ingots, melting and casting of lead-based alloy products and later use of lead-based products.

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 from lead and lead-based alloy melting and casting and purifying molten metal when the lead-based alloy is used. Background technique [0002] Domestic lead and lead-based alloys produce ingots and lead alloys when they are used to produce large oxidation. 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 surface oxide slag to be salvaged when casting products. Valuable metals are wasted, resulting in the disadvantage of low metal recovery rate. At present, most of the 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). The product produces relatively large dust and pungent odors (mainly Have SO 2 Poisono...

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