Batch composition for producing low air bubble content, high permeability glass

Abstract

The invention discloses a fitting material composition to manufacture low-foam content and high transmission rate glass, which consists of necessary antimonite and selectable sulfate, wherein the antimonite can be antimony oxide, sodium antimonite or sodium pyroantimoniate; the sulfate is sodium sulfate, calcium sulfate and potassium sulfate. The weight percentage of antimonite corresponding to Sb2O3 is not less than 0.05% and weight percentage of sulfate corresponding to SO3 is not over 0.8%. The invention is fit for non-floating manufacturing pattern of glass.

Description

technical field [0001] The invention relates to a glass batch material composition, and the glass melted by using the composition has lower air bubble content and higher light transmittance. Background technique [0002] With the development of photovoltaic technology, it is necessary to use glass with high light transmittance and low bubble content as a protective panel. An important means to effectively increase the light transmittance of the glass is to reduce the iron content in the glass, and the reduction of the iron content will make the glass difficult to clarify. One of the important factors in glass quality is the bubbles contained in glass. Glass is melted at high temperature by mixing silica sand, soda ash, limestone and other raw materials together. The glass melted at high temperature is a kind of high viscosity liquid. Contains a large number of bubbles. When no clarifier is used, the content of carbon dioxide and nitrogen in the bubbles is the most, and they...

AI Technical Summary

Problems solved by technology

[0004] In the past, in order to reduce the air bubbles in the glass, arsenic was introduced into the glass batch as a clarifying agent, but arsenic will partially volatilize at high temperature and cause environmental pollution, and as a highly toxic substance, arsenic is difficult to manage. Therefore, with the continuous improvement of people's environmental requirements, more and more countries have begun to realize the harm of arsenic in glass. Developed countries such as Europe and Japan have strictly prohibited the use of arsenic in glass.