Foundry Process Solid Waste

Some foundry processes have the potential to generate hazardous wastes within the plant. These processes include the following  

Ductile Iron Production/Melting - To reduce the sulfur content of iron, some foundries use calcium carbide desulfurization in the production of ductile iron. The calcium carbide desulfurization slag generated by this process may exhibit the characteristic of reactivity. 

Melting Emission Control - Melt materials which contain significant amounts of certain heavy metals (such as lead, cadmium, and chromium) may result in wastes which are classified as hazardous due to EP Toxicity. 

Molding - Nonferrous alloy castings, such as brass and bronze, contain lead that may generate wastes which are classified as characteristic hazardous waste due to EP Toxicity. 

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Contents indude regulations, air pollution control, water pollution control, solid waste disposal, iron and steel manufacturing, foundries, nonferrous metal production, metal finishing, cement manufacture, glass manufacture, pulp and paper, food processing, brewing industry, tanning, and chemical manufacture. 

Tab. 6.9-1 Alphabetical listing of raw materials, additives, metal products, and metal bearing wastes that have been and/or are being agglomerated to obtain various benefits Tab. 6.9-2 Advantages of briquettes made from hot cast iron borings as a melt charge for foundries [B.3, Vol. 10 (1965), 16-22] Tab. 6.10-1 List of some materials that can be used as or converted to solid fuels and have been or are being processed most commonly with agglomeration technologies to improve their properties (see also Tab. 6.10-3)...

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