Dolomite: Chemical composition is CaMg [CO3] 2, and the crystal belongs to the carbonate mineral of the cubic crystal system. The crystal structure of dolomite is similar to that of calcite, with a rhombic crystal shape. The crystal plane is often curved into a saddle shape, and polycrystalline twin crystals are common, often appearing as block or granular aggregates. Pure dolomite is white and sometimes appears in shades of gray green, gray yellow, pink, etc. due to its presence of other elements and impurities, resulting in a glassy luster. Three sets of rhombohedra have complete cleavage and are brittle in nature. Mohs hardness 3.5-4, specific gravity 2.8-2.9. Mineral powder reacts slowly in cold dilute hydrochloric acid.

The main content of dolomite powder produced by our company is CaO>30% -35% MgO>20% -22% Fe203<0.008% Al203<0.002% SiO2<0.03%

Dolomite and limestone are the main raw materials for producing glass. Dolomite can provide calcium oxide in the glass industry, reduce glass aging, prevent atmospheric and moisture erosion of glass, improve the plasticity of colored glass, and enhance glass strength.

The main function of limestone in glass is to increase its chemical stability and mechanical strength. But when the content is too high, the glass is prone to crystallization, so the CaO content in the glass generally does not exceed 12.5%. At high temperatures, CaO can reduce the viscosity of glass liquid, accelerate the melting and clarification of glass.

The low iron limestone sand Fe2O3 ≤ 0.005% CaO ≥ 55.6% produced by our company is the highest quality glass raw material, which can be used for demanding photovoltaic glass and ultra white ultra transparent glass.

Dolomite sand Fe2O3 ≤ 0.008% CaO ≥ 31% MgO ≥ 21% is the highest quality glass raw material.

The other elements in the products produced by our company do not exceed the standard, and no heavy metals were detected by SGS Guangzhou Huace Company

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