Glass clarifying agent for float glass production and preparation method therefor
A float glass and production method technology, applied in the field of glass manufacturing, can solve the problems of high melting temperature of silicate glass, difficult to remove bubbles, large surface tension, etc., achieve good clarification and decolorization effects, improve the effect, and increase the strength of the glass Effect
Inactive Publication Date: 2015-08-19
BENGBU XIANGYU GLASS MFG
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AI Technical Summary
Problems solved by technology
[0005] The object of the present invention is to provide a glass clarifier for float glass production, the glass clarifier has a clarification and decolorization effect, solves the problem of difficult removal of air bubbles in the process of float glass production, especially solves the problem of high melting temperature of silicate glass , high viscosity, high surface tension, and difficult clarification, the glass strength is greatly improved
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0014] A glass clarifying agent for float glass production, made of the following raw materials in parts by weight (kg): Glauber's salt 3.1, persimmon oxide 0.34, tin oxide 0.5, barium sulfate 2.5, sodium fluorosilicate 0.6, calcium sulfate 1.2, chloride Sodium 2.6, sodium bicarbonate 0.5, fumed silica 4, silica sol 3.5.
[0015] The production method of the glass clarifier for the production of float glass is characterized in that:
[0016] (1) Mix Glauber's salt, persimmon oxide, tin oxide, sodium fluorosilicate, and sodium bicarbonate, pulverize, and pass through a 500-mesh sieve to obtain powder;
[0017] (2) Mix 1 / 3 of the silica sol with the powder obtained in step (1), grind evenly, dry at room temperature, and pulverize to a particle size of 1-100 microns to obtain granules;
[0018] (3) Mix the other remaining ingredients, grind them evenly, then add the granules obtained in step (2), mix them evenly, granulate, the particle size is 2-400μm, send them into the calcin...
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Abstract
The invention discloses a glass clarifying agent for float glass production and a preparation method therefor. The glass clarifying agent for float glass production is prepared from the following raw materials in parts by weight: 3-3.3 parts of mirabilite, 0.32-0.36 part of cerium oxide, 0.4-0.6 part of tin oxide, 2-3 parts of barium sulfate, 0.5-0.7 part of sodium fluosilicate, 1.1-1.4 parts of calcium sulfate, 2.5-2.8 parts of sodium chloride, 0.4-0.5 part of sodium hydrogen carbonate, 3-5 parts of fumed silica and 3-4 parts of silica sol. Compared with a single clarifying agent, the glass clarifying agent disclosed by the invention has better clarifying and discoloring effects, the problem that air bubbles in a float glass production process are difficult to move, especially the problems such as a high melting temperature, large viscosity, large surface tension and difficulty in clarifying of silicate glass are solved, the glass strength is greatly improved, and high-toxic substances containing arsenic, stibium and the like are avoided, so that the glass clarifying agent is environmentally-friendly and harmless to a human body, and does not get blackened like arsenic-containing glass in processing. The sodium bicarbonate is used for pelletizing and calcining, so that negative pressure is formed inside particles, small seeds can be absorbed, and the effect of the clarifying agent is improved.
Description
technical field [0001] The invention relates to the field of glass manufacturing, in particular to a glass clarifying agent for float glass production and a preparation method thereof. Background technique [0002] Bubbles in glass are one of the main defects of glass products, and the existence of a large number of bubbles seriously affects the quality of glass. In order to eliminate the visible air bubbles in the glass during the glass production process, a certain amount of clarifier must be added to the formula. [0003] At present, white arsenic is still one of the effective clarifiers widely used in glass production. However, white arsenic is highly toxic, and 0.06 grams can be fatal. On the other hand, when white arsenic is used as a clarifying agent, part of it enters the vitreous body, and As 2 o 3 and As 2 o 5 The remaining form of arsenic is easily reduced to free arsenic by the reducing flame when heated by the lampworker, making the glass black and serious...
Claims
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IPC IPC(8): C03C1/00
Inventor 王啸东
Owner BENGBU XIANGYU GLASS MFG