How is glass made? What is its raw material?
The chemical composition of ordinary glass is Na2O, CaO, 6SiO2, the main component is silica, is a kind of amorphous structure with irregular structure. Widely used in buildings for wind and light transmission; of mixtures. There is also colored glass mixed with certain metal oxides or salts, and toughened glass made by special methods. Sometimes some transparent plastic (such as polymethyl methacrylate) is also called organic glass.
Glass is classified into flat glass and deep-processing glass. Flat glass is mainly divided into three kinds: that is, lead glass, two kinds of flat glass (slot / no groove), flat glass and float glass. The float glass is becoming the mainstream of glass manufacture because of its uniform thickness, flat top and bottom surface, high labor productivity and favorable management. And special glass is a large variety
Glass is formed by the melting of sand with other chemicals. Glass raw materials for natural ore, the ore will be crushed first, processed into powder, according to the type of glass, according to the formula made of ingredients, into the glass furnace for melting, forming glass liquid. The glass passes through the feed tank and flows out of the feed port to form the stock. The temperature of the stock is 1150~1170 degrees centigrade and the alkali free glass is 1200~1220 degrees centigrade. The material shares every minute near '200 times cut into ball billet. The billet passes through the chute, the ball distributor and the ball plate, and then rolls into different funnels respectively, then falls into a groove formed by three rollers with the same rotating direction. When the ball is rotated on the roller and its surface tension, the ball glass is formed gradually. Its diameter is determined by the thickness, velocity, and shear velocity of the glass stream.
