Material Of Glass Bottle

Raw materials and chemical composition Bottle glass materials are generally composed of 7 to 12 kinds of raw materials. There are mainly quartz sand, soda ash, limestone, dolomite, feldspar, borax, lead and barium compounds. In addition, there are auxiliary materials such as clarifiers, colorants, decolorants, opacifiers (see glass manufacturing). Coarse-grained quartz is difficult to melt completely; excessively fine particles are prone to scum and dust during the melting process, which affects melting and easily clogs the heat storage chamber of the furnace. Suitable particle size is 0.25 ～ 0.5mm. In order to make use of waste glass, broken glass is generally added, and its amount is usually 20 to 60%, and the highest can be up to 90%.