Compound fluxing agent for float glass

Abstract

The invention relates to a compound fluxing agent for float glass, which is mainly used for fluxing in the process of melting the float glass. The compound fluxing agent consists of three oxides of Bi2O3, B2O3 and CeO2 and Na2O, wherein the Na2O is the inherent component of the float glass, and the three oxides of Bi2O3, B2O3 and CeO2 are added; and if the total mass of the oxides of the float glass is 100 grams, the sum range of the total mass of the three oxides of Bi2O3, B2O3 and CeO2 which are added is 0.5 to 10 grams, and the weight ratio of the Bi2O3, B2O3 to CeO2 is 80-90:8-18:2-4. Under the synergism of the four oxides, the aim of reducing the melting temperature of the float glass is fulfilled, and the melting quality of the float glass is guaranteed, so that the compound fluxing agent of the invention is particularly applied to the preparation of the float glass. Under the condition of keeping the basic properties of the float glass unchanged, the melting temperature can be reduced by 80 DEG C to the maximum extent.

Description

technical field [0001] The invention relates to a novel float glass composite flux. It is especially suitable for the production of float glass, which can ensure the quality of float glass and realize energy saving and emission reduction in its production. Background technique [0002] Float glass is a method of flat glass production. It refers to the method in which glass melt floats on the surface of molten tin liquid to produce flat glass. Its advantages are high glass quality, fast pulling speed, large output, thickness can be controlled at 0.7-30mm, and width can reach 5.6m at present, which is convenient for production automation. The advent of float glass is a major change in the history of world glass production and development, and it is gradually replacing various drawing methods of flat glass. [0003] A very important link in the production of float glass is to continuously put the batch materials into the melting furnace through the feeder for melting, and he...

AI Technical Summary

Problems solved by technology

Na 2 O is used as a single fluxing component of float glass, generally composed of soda ash (Na 2 CO 3 ) introduced, Na 2 O as a float glass flux is characterized by a wide range of sources and low cost, but there are also many problems, such as ①Na 2 The fluxing ability of O is limited, and when the content is constant, the corresponding melting temperature is relatively high; ②Because the float glass contains about 14% Na 2 O, Na + It is easy to migrate to the surface of the glass, which will cause the phenomenon of "mold" on the glass

[0007] Although using Na 2 As a flux for float glass, O has the characteristics of low cost, but its fluxing effect on float glass is limited. With the shortage of energy, the price of fuel will continue to increase, and the structure and performance of float glass will not change basically. Under the condition of lowering the melting temperature of float glass, a flux with better fluxing effect is required