A kind of flat glass batch material and preparation method thereof

Abstract

The invention relates to a plate glass batch and a preparation method thereof. The plate glass batch consists of sandstone, sodium carbonate, feldspar, limestone, dolomite, mirabilite and coal powder,wherein the usage amount of the coal powder accounts for 2.4-3.6% of the conventional usage amount of the mirabilite; composite particles are prepared from 5-50% of the mirabilite and the coal powderwith the usage amount of the coal powder, wherein the percentage of the coal powder particles in a particle size range of 0.15-0.4 mm is over 90%, and the percentage of the composite particles in a particle size range of 0.3-0.9 mm is over 90%; and the composite particles and the balance of mirabilite are added into the batch together. The composite material disclosed by the invention has the following advantages: (1) the accuracy of the proportion of the mirabilite and coal powder is effectively ensured; (2) the coal powder is coated by the mirabilite, the contact of the coal powder with theair is avoided, and premature burning of the coal powder after the coal powder enters a melting furnace is effectively prevented; (3) the "nitrate water" is not generated to corrode the refractory material of the melting furnace, and no excessive coal powder exists for coloring the glass; and (4) the usage amount of the coal powder is reduced, and the emission amount of the greenhouse gas CO2 canbe reduced.

Description

technical field [0001] The invention belongs to the field of glass production technology, and in particular relates to a flat glass batch material and a preparation method thereof. Background technique [0002] Flat glass batch materials are usually made by mixing sandstone, soda ash, feldspar, limestone, dolomite, Glauber's salt, coal powder and other raw materials in a certain proportion. During production, the batch materials are put into the furnace for heating, and undergo a series of complex physical and chemical reactions Finally, it is transformed into a melt, which contains a large number of bubbles. Through clarification, the bubbles in the molten glass are removed, and then through homogenization, forming, annealing, cutting and other processes, flat glass is obtained. In the process of glass melting, Glauber's salt plays the role of fluxing and clarifying, and generally needs to be used in conjunction with coal powder. The main component of Glauber's salt is Na ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a glass batch and its preparation method in order to overcome the inaccurate proportion of the batching material Glauber's salt and coal powder in the prior art.