Boron-magnesium-calcium powder E glass formula

Abstract

The invention relates to a formula for producing E glass, which adopts boron magnesium calcium pulverized powder to replace fluorite as composite fluxing agent. The main compositions by weight portion of the technological formula are: 50 to 60 portions of silicon dioxide, 0 to 20 portions of aluminum sesquioxide, 2 to 7 portions of boron sesquioxide, 15 to 25 portions of calcium oxide, 0.2 to 4 portions of magnesia and 0.1 to 0.3 portion of fluorine, wherein, the content of sodium oxide and potassium oxide is less than 0.70. By adoption of the E glass manufacturing technique, the amount of the fluorite during the producing procedure is greatly reduced and the fluorine content in exhaust gas is greatly reduced, thereby the environmental pollution is reduced; simultaneously the content of fluorine element in the glass is reduced, the strength of glass fibers is improved and further the quality of the glass is improved; and the temperature in a furnace is reduced, the service life of the furnace is increased and the expenditure is saved for enterprises.

Description

technical field [0001] The invention relates to a production formula of E glass, in particular to a production formula of using boron magnesium calcium powder instead of fluorite as a cosolvent to produce E glass. Background technique [0002] E glass is aluminum, boron, and silicate glass with an alkali metal oxide content of less than 1%. In the production process of traditional E glass, fluoride is an indispensable raw material as a flux. In the prior art, fluorite is usually used to introduce Fluoride as a flux. When using fluorite, the glass melting process in the kiln is a high-temperature reaction, and the use of glass liquid containing fluorine will cause serious erosion of the kiln pool wall, reducing the service life of the kiln and the safety of production. Moreover, a large amount of fluoride produced in the production process is discharged into the atmosphere with the flue gas, causing air pollution; when the rainy season comes, the fluorine element falls to th...

AI Technical Summary

Problems solved by technology

Generally, the application of natural fluorite requires manual beneficiation, which consumes manpower and increases production costs.

The cumbersome flue gas treatment process after using fluorite greatly increases the production cost

[0003] In the prior art, the method of using fluorite as a flux is relatively mature, and is widely used by various manufacturers, but the above-mentioned disadvantages show that the production of glass fiber with the traditional E glass formula is not suitable for my country's national conditions, and it is necessary to find a substitute for it. Fluorite or a flux that partially replaces fluorite will prolong the life of the kiln, reduce fluorine pollution in the atmosphere, reduce post-processing costs, and reduce the overall production cost.

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