The knowledge of the limestone

Why join the limestone in ironmaking process? What is its function? Ironmaking process adding limestone, can with a high melting point of iron ore gangue (silica) reaction, generate silicate and remove. To reduce the impurity content in the cast iron.

Mainly to remove S of molten iron, silicon and other impurities, impurity, the more the more impact on the quality of steel. Steel is easy to brittle, limestone at high temperature after China's entry into CO2 and CaO, CO2 and C reaction into CO participate in ironmaking. CaO and sulphur in molten iron, silicon and other impurities generated CaS and CaSiO3 float in molten iron, can be separated.

What role the limestone in glass production? The main material in the manufacture of the common glass are: quartz sand, dolomite, limestone, feldspar, soda, glauber's salt, etc.; The limestone is mainly used to introduce the intrinsic chemical composition of the glass. Glass is a traditional inorganic nonmetallic material. Also known as silicate material, in addition to cement and ceramic, glass is soda ash (sodium carbonate) sodium silicate sodium. And an excess of SiO2 in a glass furnace. Sodium glass components in Na2SiO3 CaSiO3 SiO2.

There are two kinds of glass fiber reinforced plastic commonly used resin, epoxy resin and unsaturated polyester resin, epoxy resin curing agent can only, unsaturated polyester resin to curing agent and accelerator, epoxy type is commonly E - 44, also called 6101, curing agent with T - 31 or ethylenediamine, unsaturated resin models 191, 196, 189, 195, etc., curing agent and promoter 1 # 2 # 5 #.

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