Lhoist North America produces lime and lime-based products derived from calcium-rich limestone. The company's primary product, quicklime (or calcium oxide) is used for steelmaking, ore processing, industrial manufacturing, glass making, and construction. The company's products also serve environmental purposes such as wastewater treatment and softening drinking water, as well as roadbed stabilization. Lhoist North America provides lime slurry (hot liquid lime) to its customers from its mobile PORTA BATCH concentrated production units. Belgium-based Lhoist, one of the largest lime companies in the world (with operations in 25 countries), owns Lhoist North America, which was founded in 1966.