Dolomite is chiefly used as refractory, remming, and fettling material in stell melting shop, and as fluxing material in blast furnace operation in secondary steel and ferromanganese manufacture. It is also used in the glass industry especially in sheet-glass manufacture. It also finds use in the manufacture of mineral wool.

Dolomite has become a useful source for the production of magnesite by reacting calcined dolomite with sea-water.

Dolomite is also a good source of magnesium metal. The magnesium metal is extracted from dolomite by the well-known fero-silicon process.

In horticulture, dolomite (Ground Magnesium Lime) are added to soils and soilles potting mixes to lower their acidity (adjusting pH) and as a magnesium source to give optimum growing conditions and hence improve crop yields

Dolomite is mixed with cement, sand or PFA, water and aluminium powder to give a slurry which rises and sets to form honeycomb structured blocks which have excellent thermal and sound insulation properties.

The heat generated when dolomite reacts with water the alkaline conditions combined with aluminium powder generate hydrogen bubbles which cause the blocks to rise. The heat generated subsequently causes the slurry to set. The blocks are then heated in an autoclave, which promotes reactions between calcium and silicates in the sand or PFA and gives extra strength. Dolomite lime and/or modified quikclime can be added to reduce excessive shrinkage or cracking.

Contaminated land can be treated using dolomite lime and/ or lime binder mixes to adjust pH and immobilise sulphates, phosphates and heavy metals.

Dolomite stone can be used as a coolant and slag modifier in BOS steeimaking. Dolomite lime can be added to BOS and Electric Arc Steeimaking processes to modify slag viscosity, protest refractories and to help flux the lime. It is also used to aid with the removal of impurities.

A wide number of organic and inorganic sludges can be treated using dolomite lime to increase solids content, Biological sludge can be sanitised by the raise in temperature and pH obtained by adding these materials. Biosolids treatment up Advanced Treated is Achievable with this method.