Tin liquid bubbling production process and tin liquid bubbling production apparatus for hollow glass spheres

Abstract

The invention discloses a tin liquid bubbling production process and a tin liquid bubbling production apparatus for hollow glass spheres. The production process includes the steps of: (A) adding a crushed glass material into an electric melting furnace to melt the material into molten glass; (B) feeding the molten glass through a concentric sleeve tube bubbler into a shaping tin trough, wherein molten glass bubbles are naturally formed on a nozzle of the concentric sleeve tube bubbler; (C) after the molten glass bubbles are floated to the surface of the heated tin liquid, blowing the molten glass bubbles into a cooling tin trough by means of a cooling nozzle to cool and solidify the glass spheres. The production apparatus includes an L-shaped electric melting furnace which is formed by a vertical channel and a horizontal channel. A pressure control device and a material adding device are arranged on the top of the vertical channel. The concentric sleeve tube bubbler is disposed on the top wall of the horizontal channel. The shaping tin trough is arranged above the horizontal channel. The nozzle of the concentric sleeve tube bubbler is located in the shaping tin trough. The cooling nozzle is arranged above the shaping tin trough. The cooling tin trough is arranged in the gas flow jet direction of the cooling nozzle. The shaping tin trough and the cooling tin trough are communicated with each other. The process and the apparatus are beneficial to protection of environment and recycling of resources.

Description

technical field [0001] The invention relates to a production process of light inorganic materials, in particular to a production process and device of hollow glass spheres. Background technique [0002] Hollow glass microspheres are spherical vitreous powders with a hollow structure. They have the advantages of light weight, low thermal conductivity, high strength, and small thermal conductivity and thermal contraction coefficients. They are known as "space age materials" in the 21st century. Hollow glass microspheres have obvious weight reduction and sound insulation effects, so that the product has good crack resistance and reprocessing performance. [0003] In the prior art, the patent CN1990401A introduces a preparation process using sodium silicate as the main raw material. First, the sodium silicate solution containing boron is spray-dried to obtain solid gel balls with a diameter of 5-50 μm, and then at 400 Expansion molding in a high temperature furnace at -600°C. ...

AI Technical Summary

Problems solved by technology

The hollow glass microspheres prepared by this process have low compressive strength and poor chemical stability, so their application in demanding industries is limited.

[0004] However, industrial waste and domestic waste contain a large amount of waste glass. As a recyclable resource, waste glass is limited due to low recovery rate and high recycling cost. Sometimes it can only be used as "chicken rib" garbage. Not only caused environmental pollution, but also caused a waste of resources

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