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low iron dolomite


The chemical composition of dolomite is CaMg(CO3)2, and the crystal belongs to the carbonate mineral of the trigonal system. The crystal structure of dolomite is similar to calcite, pure dolomite is white, Mohs hardness 3.5-4 dolomite can be used as steelmaking furnace refractory inner layer, slag agent, cement raw materials, glass flux, kiln industry, fertilizer, construction and decorative stone, paint, pesticides and medicine and other purposes. It can be used in building materials, ceramics, glass and refractory materials, chemical industry, agriculture, environmental protection, energy saving and other fields.

low iron limestone


Limestone is calcite (mineral) as the main component of calcium carbonate rock, is the main raw material for the production of glass. Lime and limestone are widely used as building materials and are important raw materials for many industries.

low iron quartz sand


Quartz sand is quartz particles made by crushing quartz stone. Quartz sand is a kind of hard, wear-resistant, chemically stable silicate mineral, its main mineral composition is SiO2, quartz sand color is milky white, or colorless translucent, hardness 7, its chemical, thermal and mechanical properties with obvious anisotropy, insoluble in acid, slightly soluble in KOH solution, melting point 1750 ° C. Quartz sand is an important industrial mineral raw materials, non-chemical dangerous goods, widely used in glass, casting, ceramics and fireproof materials, smelting ferrosilicon, metallurgy, construction, chemical industry, plastics, rubber, abrasives, filter materials and other industries.