The water used to rinse dust in the steelmaking process and direct cooling water in the steel rolling process are both filtered, precipitated, and dehydrated to produce sludge. A small amount of coal ash is used to adjust quality before forming the final product, a mixture of iron slag, coal ash, and sludge. This replace natural iron slag as a material in cement to reduce the mining of natural resources.more
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The water used to rinse dust in the steelmaking process and direct cooling water in the steel rolling process are both filtered, precipitated, and dehydrated to produce sludge. A small amount of coal ash is used to adjust quality before forming the final product, a mixture of iron slag, coal ash, and sludge. This replace natural iron slag as a material in cement to reduce the mining of natural resources.