As a binder in grinding wheels


Light, flexible mats for insulating pipes

Animal feed supplement

Source of magnesium ions for chickens, cattle and other animals

Lubricating oils

Additive to neutralise acids

Boiler (oil-fired) additives

Raises melting point of ash generated to produce a friable material that is easily removed; reduced corrosion of steel pipes holding steam as well as sulphur emissions into the environment


Special grades of magnesium hydroxide, oxide and carbonate are unsed in antacids, cosmetics, toothpaste and ointments

Boiler feedwater treatment

Reduces iron, silica and solids

Plastics manufacture

Filler, acid acceptor, thickener catalyst and pigment extender


Starting point for the production of other magnesium salts such as sulphate and nitrate

Refractory and ceramics

Basic ingredient in product formulations for the steel industry


Pigment extender in paint and varnish

Rubber compounding

Filler, acid acceptor, anti-scorch ingredient, curing aid, pigment


Basic ingredient of oxychloride cements used for flooring, wallboard, fibre board, and tile

Steel industry

Annealing process; coating for grain-oriented silicon steel used in electrical transformers


Semi-conductors; heating elements insulating filler between wire and outer sheath

Sugar refining

Reduces scale build-up when used in juice clarification and precipitation


Source of essential magnesium for plant nutrition

Sulphite wood pulping

Source of base of cooking liquors


Catalyst and water acceptor in shell moulding

Uranium, gallium and boron processing

Precipitation initiator by acid neutralisation

Glass manufacture

Ingredient for specialty, scientific and decorative glassware and fibreglass

Wastewater treatment

Acid stream neutraliser; precipitates heavy metals

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