Exploatarea Minieră Harghita S.a, Miercurea-Ciuc

Dolomitele (dolomite) are used as flux in blast furnaces to melt iron. For this purpose it is used by at least 20% dolomite, magnesium oxide, the oxides acids not exceed 3%.Together with salt, is the raw material for obtaining sodium sulfate necessary paper industry resulting as a byproduct and magnesium salts. Dolomitele calcined lime can be used instead. The chemical, used to obtain dolomitele magnesium oxide, magnesium salts, carbonic acid, ammonium nitrate and potassium bichromatic and obtaining magnesium metal and magnesium. Mixed with asbestos, dolomite is used in the manufacture of thermal insulation materials, fire retardant, mineral wool. Dolomite can be used in ceramic industry, glass industry, in agriculture, water purification work, as filler in asphalt, paints, plastics, rubber, and manufacture of standard Seger cones. It also is used as building material blocks, crushed stone for concrete and building roads and important portuare.