Composite de-foaming agent applicable to sodium aluminum silicon glass and application method thereof

Abstract

The invention relates to a composite de-foaming agent for eliminating bubbles in glass production and an application method thereof. A composite de-foaming agent applicable to sodium aluminum siliconglass is characterized by being prepared by mixing a main body component and a solvent, and the mass ratio of the main body component to the solvent is 1 to (2 to 25); the main body component is prepared from raw materials including titanium powder, titanium dioxide, tetrabutyl titanate, molybdenum trioxide, vanadium pentoxide, tungsten trioxide and borax; the content of each raw material is as follows in percentage by mass: 1 to 15 percent of the titanium powder, 1 to 30 percent of the titanium dioxide, 50 to 79 percent of the tetrabutyl titanate, 0.5 to 20 percent of the molybdenum trioxide,0 to 5 percent of the vanadium pentoxide, 0.5 to 5 percent of the tungsten trioxide and 5 to 20 percent of the borax; the sum of the mass percent of all the raw materials is 100 percent. The composite de-foaming agent provided by the invention has the characteristics of good de-foaming effect, high temperature resistance and good compatibility and can be used for rapidly eliminating the bubbles in a glass production process.

Description

technical field [0001] The invention belongs to the technical field of melting in the glass production process, and in particular relates to a composite defoamer used for eliminating air bubbles in glass production and a use method thereof. Background technique [0002] With the popularity of glass oxy-fuel combustion furnaces, the adverse effects of oxy-fuel combustion also need to be resolved urgently. Due to the high oxygen content, fuel combustion will produce a large amount of carbon dioxide and water vapor, which will cause a large number of tiny foams on the surface of the glass liquid. The foam layer almost covers the area not covered by batch materials in the float glass furnace, and the thickness of the foam layer is 5mm-100mm, or even thicker. On the one hand, the appearance of the foam layer hinders the efficiency of heat transfer from the flame space to the molten glass, which increases the production energy consumption. On the other hand, it also causes the a...

AI Technical Summary

Problems solved by technology

Although its defoaming effect is good, tetrabutyltin is toxic and should not be used on a large scale

[0004] Chinese patent application CN107056044A discloses a compound defoamer suitable for the production of liquid crystal glass, which contains pentaferric iron in its main component. The improvement of the defoaming effect, on the contrary, the addition of pentamethylene diferron will lead to the increase of the iron content in the liquid crystal glass, which will affect the transmittance of the glass

Images