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Lhoist

Lhoist is a global supplier of lime, dolime and mineral-based solutions serving industries such as steel, flue gas treatment, roads and civil works, water treatment, building materials, agriculture and paper.

Last updated September 15, 2026

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Overview

Lhoist provides lime, dolime and mineral-based solutions that it says drive progress worldwide, partnering with customers to deliver critical solutions across various industries. Its products support applications from treating drinking water and stabilizing soils to reducing emissions and supporting demanding industrial processes. The company reports 80+ sites and terminals, 2 R&D centers, sales reach in more than 75 countries, and 4,800+ employees around the world, with a presence in 20 countries. It goes beyond supplying lime, dolime and mineral products by providing tailored solutions, hands-on technical support and reliable logistics services.

Products and positioning

A global supplier of lime, dolime and mineral-based solutions that combines deep operational expertise with dependable, high-performing solutions and provides hands-on technical support and reliable logistics services.

  • Dolime

    Dolime, also known as dolomitic lime or burnt dolomite, is produced by calcining dolomitic limestone; its main constituents are calcium oxide (CaO) and magnesium oxide (MgO). Lhoist distinguishes soft-burnt dolomite (lower, more consistent calcining temperature; high porosity and high chemical reactivity) from hard-burnt dolomite (higher temperature for a longer duration; denser and less reactive, ideal for uses such as refractory products).

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