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How glass beads are formed

Jan 30, 2020

Glass beads are generally found in fly ash emitted by thermal power plants and are an artificial volcanic ash material. The coal is pulverized into powder in a thermal power plant and sprayed into the combustion boiler through professional equipment, allowing them to burn in a floating state. During the entire combustion process, the organic components in the coal and combustible materials such as carbon are basically burned out, while the clay-like silico-aluminum-iron-calcium in the coal is melted under high temperature. Symbiotic bodies of Moledo and quartz glass were formed, and their pores were filled with various gases. When the furnace temperature continued to rise to 1,400 degrees Celsius, through complex physical effects, the molten particles continuously rolled in suspension to form spheres. During this process, the gas in the pores is enclosed in the sphere, and the shape of the glass beads is basically generated.

When the furnace temperature continues to increase, due to the thermal expansion and contraction principle, the gas in the ball expands, the sphere increases, and the side of the support shell is thin. Such a hollow spherical object is formed. When it encounters air, it cools down quickly, and glass beads are formed.