Production method of glass beads: powder method and melt method
The production methods of glass beads can be roughly divided into two categories: powder method and melt method.
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The production methods of glass beads can be roughly divided into two categories: powder method and melt method.
Powder method: The glass is crushed into the required particles, sieved, at a certain temperature, through a uniform heating zone, the glass particles are melted, and microbeads are formed under the action of surface tension.
Melt method: Disperse the glass liquid into glass droplets with high-speed airflow, and form microbeads due to surface tension.
Heating method: For general or higher melting temperature glass, gas heating or oxyacetylene flame and oxyhydrogen flame heating can be used; for glass with high melting temperature, DC arc plasma device can be used for heating.
The most widely used powder method is to put fine glass powder as raw material into a reservoir and flow it to the hot zone of a high-efficiency gas nozzle. Glass beads are controlled by a strong flame and pushed into the huge expansion chamber of the device. Due to the heating effect of the flame, the glass beads melted almost instantly. Then the particles quickly reduce the viscosity and form into an ideal spherical shape that meets the requirements under the action of surface tension.
2017-08-08
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