Minerals & Chemicals
Dolomite Powder
Dolomite Powder is a calcium magnesium carbonate, milled and screened to each buyer’s grade, particle size and chemical specification. The same material is supplied to glass, iron and steel, ceramics and tiles, prepared to the parameters required by each process.
Specification
Supplied to your requirements on particle size and chemistry, from coarser granules through to fine powder. Grade, mesh and packaging matched to the application and destination.
Applications
Glass
Used in container glass, float (flat) glass and fibreglass. It supplies calcium and magnesium oxides that improve the chemical durability and weather resistance of the finished glass, works as a flux that lowers the melting temperature, and helps reduce devitrification in float glass. Low-iron grades are used where clarity matters.
Ceramics
Used in bodies such as porcelain, whiteware and sanitaryware, contributing calcium and magnesium oxides that act as a flux, lower the firing temperature and assist sintering and vitrification.
In glazes, it works as a flux that influences the surface finish.
Iron & Steel
In ironmaking, raw dolomite is added to the sinter mix and blast furnace as a flux, setting the MgO level in the slag. In steelmaking, calcined dolomite (dolime) conditions the BOF slag and helps protect the vessel’s magnesia lining, including in slag-splashing practice. In the ladle refining furnace (LRF), it builds the basic refining slag that supports desulphurisation and inclusion removal, while its magnesia shields the ladle lining.
Tiles
In wall and floor tile bodies, it acts as a flux that helps control firing shrinkage and thermal expansion. In porous (monoporosa) wall tiles, it moderates densification to hold the target porosity.
Sintered (dead-burned) dolomite also serves as a refractory raw material, and finely ground dolomite is used as a functional filler in paints, plastics and rubber.