dolomite

Dolomite is a carbonate mineral, there are iron dolomite and manganese dolomite. It has a crystalline structure like calcite and is often rhombohedral. Hydrochloric acid bubbles slowly when it gets cold. Some dolomites glow orange when exposed to cathode rays. Dolomite is the main mineral component of dolomite and dolomitic limestone. Dolomite can be used in building materials, ceramics, glass and refractory materials, chemical industry and agriculture, environmental protection, energy saving and other fields. It is mainly used as flux for alkaline refractories and blast furnace ironmaking. Production of calcium magnesium phosphate fertilizer and preparation of magnesium sulfate; And ingredients for the production of glass and ceramics.Various quality of dolomite series products: dolomite ore, dolomite sand 6-10 mesh, 10-20 mesh, 20-40 mesh, 40-80 mesh, 80-120 mesh, dolomite powder 10 mesh through, dolomite ultrafine powder 140 mesh, 325 mesh,600 mesh, 1000 mesh, 1600 mesh.When dolomite is heated to 700~900℃, it decomposes into a mixture of carbon dioxide, calcium oxide and magnesium oxide, which is called caustic magnesite and is easy to react with water. When dolomite is calcined at 1500℃, magnesium oxide becomes magnesite, calcium oxide into crystalline a-CaO, compact structure, strong water resistance, refractoriness up to 2300℃.The dolomite deposits in China are distributed in the carbonate rock series, and the older the strata, the more deposits occur, and most of them are concentrated in the bottom of Sinian system. For example, there are dolomite deposits in the Liaohe Group in Northeast China, the Sangzi Group in Inner Mongolia and the Jian 'ou Group in Fujian. Secondly, the dolomite deposits in the Sinian and Cambrian systems are more extensive, such as the Liaodong Peninsula, eastern Hebei, Inner Mongolia, Shanxi, Jiangsu and other places are also produced by large-scale deposits. The Carboniferous and Permian dolomite deposits are mainly distributed in Hubei, Hunan, Guangxi and Guizhou provinces.The dolomite deposits in China are rich in resources, and the proven reserves can meet the needs of economic construction. Most of the deposits have been developed and utilized, and the producing areas are all over the provinces, especially in Kazuo County of Chaoyang City.