Dolomite sand price magnesia calcium refractory material raw material - dolomite

Dolomite powder is the main raw material for the manufacture of magnesium-calcium refractories. Dolomite is a double salt of CaCO3 and MgCO3. The chemical expression of dolomite powder price is CaMg(CO3)2, containing CaO 30.4%, MgO 21.7%, and CO2 47.9%. After heating, MgCO3 in dolomite decomposes at around 750 °C; CaCO3 decomposes at around 950 °C. Dolomite and cold acid act slowly. Dolomite sand above 200 mesh Dolomite is a trigonal mineral, its refractive index nm=1.681~1.695, np=1.500~1.513, relative density 2.8~2.9, hardness 3.5~4.

Dolomite sand above 200 mesh

Dolomite powder

Dolomite deposits are sedimentary deposits, and their origins are further divided into marine sedimentary dolomite deposits and lagoon sedimentary dolomite deposits. Among them, the marine sedimentary dolomite deposits are huge in scale and have good ore quality, such as the Yingkou Chenjiabaozi deposit in Liaoning, the Weijiajing deposit in Zunhua in Hebei, the Mufushan deposit in Nanjing, Jiangsu, and the Xiangxiang dolomite deposit in Hunan. Dolomite deposits deposited in lagoon facies are smaller in scale and have poorer ore quality.

my country is rich in dolomite resources, and most of them are produced in Sinian rock formations, such as the Liaohe Group in Northeast China, the Sanggan Group in Inner Mongolia, and the Ca Mau Group in Fujian. Secondly, the dolomite deposits in the Sinian-Cambrian period are also relatively extensive, such as the Liaodong Peninsula, Jidong, Inner Mongolia, Shanxi, Jiangsu and other places also have large deposits. Carboniferous and Permian dolomite deposits are mostly distributed in Hubei, Hunan, Guangxi, Guizhou and other places.