Slag-to-cement facility marks first anniversary

Lafarge North America’s South Chicago grinding facility has successfully completed its first year of operations, producing a threeway win for Lafarge, steel manufacturer Ispat Inland Inc. and the environment. The innovative site uses an environmentally friendly process that converts slag — a byproduct of steel manufacturing — into a premium product that significantly enhances cement performance when added to ordinary cement.

Lafarge takes slag from the Ispat Inland steel mill in nearby East Chicago, which saves Ispat the cost of disposing of the slag and provides Lafarge with a steady source of material that it processes into cement (while using less energy than a conventional cement kiln). In it s first year of operation, the facility processed about 120,000 tons of slag and produced 110,000 tons of high-quality NewCembrand slag cement, which the company has found performs better than regular cement.

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