Is the production of glass materials as thin as possible? Why?
Glass production is very strict to the granularity of various raw materials, and there is a usable range. Generally, refractory materials are finer, such as sand and feldspar. Some of them are coarse, such as dolomite and limestone. However, the most taboo is "superfine powder""!
Superfine powder in water, stirring, mixing will form a group, how big a mass is equivalent to how much a grain of sand, that is not melting, and eventually in the glass liquid to leave stones, become impurities.
