Blue diamond float glass and production method thereof

Abstract

The invention provides blue diamond float glass and a production method thereof, and belongs to the technical field of float glass. The blue diamond float glass comprises a basic glass part and a coloring agent part, wherein the basic glass part comprises: 65-75wt% of SiO2, 10-20wt% of Na2O, 5-15wt% of CaO, 0-5wt% of MgO, 0-5wt% of Al2O3, 0-0.1% of K2O and 0-0.2% of SO3; and the coloring agent part comprises the following components by weight percentage based on the weight of the basic glass: 0-0.015wt% of Fe2O3 and 0-0.01wt% of TiO2; 0-2ppm of Co0 and 0-2ppm of MnO2. And the preparation process comprises the procedures of iron removal, sulfur removal and the like. The method has the advantages that the stability and the color uniformity of the float glass can be greatly improved, and theproduced ultra-white blue diamond float glass has pleasant light blue.

Description

technical field [0001] The invention belongs to the technical field of float glass, and relates to a blue brick float glass and a production method thereof. Background technique [0002] Ultra-clear float glass is a high-grade variety of glass products with high light transmittance and high transparency. It is mainly used in interior and exterior decoration of high-end buildings, electronic products, high-end car glass, solar cells, high-end gardening buildings, and high-end glass furniture. , Various imitation crystal products and other industries. The development and application of solar energy provides a broader development space for the development of ultra-clear glass, because the light transmittance of ultra-clear glass is above 91%. [0003] According to the definition of ultra-clear float glass in the "Building Materials Industry Standards of the People's Republic of China", it is produced by float glass production technology, and Fe in the composition 2 o 3 The c...

AI Technical Summary

Problems solved by technology

In terms of reducing or eliminating the yellow-green sensory defects of glass, it requires that Glauber's salt should be added as a flux in the raw materials, and the remaining sulfur in the glass should be less than or equal to 0.2%, which is a traditional glass production process. It is difficult to achieve; it also shows that CeO can be added to the raw material when the sulfur content is too low 2 , sodium nitrate and other components to ensure the redox rate, but CeO 2 The existence of the glass will cause fluorescence when exposed to ultraviolet light, and the use of sodium nitrate will also cause the generation of NOx and treatment measures have to be taken to meet the government's restrictions on NOx emissions; in order to ensure good melting quality, When a small amount or no sulfur-containing co-solvent is added, it is achieved by feeding pure oxygen into the kiln to improve the quality of fuel combustion. These measures will undoubtedly lead to an increase in production costs

In another measure, in order to ensure that the glass tempered hot bending does not appear "fogging", it is necessary to periodically add a small amount of pure iron to the molten tin to replace the oxygen and sulfur in the molten tin, and this measure will cause polysulfide The formation of iron causes the glass to have yellow-green sensory defects. At this time, the molten tin is cleaned regularly to eliminate the iron in the molten tin. This will also increase the production cost and is not conducive to the continuous stability of the glass color.

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