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Method for eliminating bubbles of float glass with low sodium sulfate content

A technology of float glass and low Glauber's salt, which is applied in glass furnace equipment, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of poor clarification of glass melt and difficult gas discharge, and achieve cost saving of desulfurization equipment, prolonging service life, Emission reduction effect

Active Publication Date: 2019-07-09
中建材(濮阳)光电材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the content of Glauber's salt decreases, if other corresponding technical measures are not taken, it will lead to poor clarification of the glass melt, and the residual gas in it will be difficult to discharge and become bubble impurities in glass products. After reducing the content of Glauber's salt in the composition of glass batch materials, the method of discharging bubble impurities in the glass melt has become a long-term technical demand of those skilled in the art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The composition of the base glass component in weight percent is as follows: SiO 2 : 71.5, Al 2 o 3 : 0.5, Na 2 O: 14.5, K 2 O: 0.5, MgO: 4.5, CaO: 8.5;

[0048] Glauber's salt content in the above basic glass components is 0.8;

[0049] Introduce the clarifier component of the following composition into the above-mentioned basic glass component by melting 100kg of glass: CeO 2 0.015 kg NaCl 0.055 kg SnO 2 0.07kg

[0050] The raw materials containing the above-mentioned basic glass components and clarifier components are weighed and mixed to form a uniform batch, and then put into the glass melting furnace with electric boosting function and bubbling device proposed by the present invention for melting, clarification and homogenization. to form molten glass that meets the quality requirements.

[0051] In order to fully eliminate the residual air bubbles in the glass melt, the output power of each set of electrodes set in the front row is 0.4 KW, and the output...

Embodiment 2

[0055] The composition of the base glass component in weight percent is as follows: SiO 2 : 72.5, Al 2 o 3 : 0.1, Na 2 O: 12.5, K 2 O: 1.1, MgO: 4.8, CaO: 9;

[0056] Glauber's salt content in the above basic glass components is 0.5;

[0057] Introduce the clarifier component of the following composition into the above-mentioned basic glass component by melting 100kg of glass: CeO 2 0.001kg NaCl 0.08kg SnO 2 0.15kg

[0058] The raw materials containing the above-mentioned basic glass components and clarifier components are weighed and mixed to form a uniform batch, and then put into the glass melting furnace with electric boosting function and bubbling device proposed by the present invention for melting, clarification and homogenization. to form molten glass that meets the quality requirements.

[0059] In order to fully eliminate the residual air bubbles in the glass melt, the output power of each set of electrodes set in the front row is 0.1 KW, and the output powe...

Embodiment 3

[0063] The composition of the base glass component in weight percent is as follows: SiO 2 : 70, Al 2 o 3 : 2.1, Na 2 O: 14.5, K 2 O: 3.5, MgO: 3.8, CaO: 6.1;

[0064] Glauber's salt content in the above basic glass components is 1.0;

[0065] Introduce the clarifier component of the following composition into the above-mentioned basic glass component by melting 100kg of glass: CeO 2 0.02kg NaCl 0.08kg SnO 2 0.15kg

[0066] The raw materials containing the above-mentioned basic glass components and clarifier components are weighed and mixed to form a uniform batch, and then put into the glass melting furnace with electric boosting function and bubbling device proposed by the present invention for melting, clarification and homogenization. to form molten glass that meets the quality requirements.

[0067] In order to fully eliminate the residual air bubbles in the glass melt, the output power of each set of electrodes set in the front row is 0.8 KW, and the output power...

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Abstract

The invention relates to a method for eliminating bubbles of float glass with a low sodium sulfate content, and relates to the field of glass manufacture. According to the method provided by the invention, a float glass clarification method is adopted to reduce or cancel the amount of sodium sulfate used in a glass batch, so that on the basis that a glass melt can realize good clarification, emission of SO2 gas of flue gas in a kiln is reduced, the environmental pollution caused by the SO2 gas is reduced, non-desulfurization discharge is realized, costs of a desulfurization device and operating costs of the desulfurization device are saved, erosion of sulfur on a refractory material is reduced, and the service life of a melting furnace is prolonged; and the method is suitable for a wide range of promotion and application.

Description

technical field [0001] The invention relates to the field of glass manufacturing, in particular to a method for removing air bubbles in float glass with low Glauber's salt content. Background technique [0002] It is known that in the production process of float glass, in order to eliminate the residual gas in the glass melt and reduce the bubble defects in glass products, it is necessary to use Glauber's salt, namely sodium sulfate, as a clarifying agent in the glass production batch. At present, in order to meet the requirements of national standards for high-quality float glass, the content of Glauber's salt in domestic float glass batches is generally 3.0% to 3.5%. 2 Emissions reach more than 1,700 kilograms per day. [0003] SO 2 A large amount of flue gas discharge seriously pollutes the environment first, causing harm to crops and human body, and at the same time, the SO in the flue gas 2 Combining with sodium oxide vapor in the flue gas to generate sodium sulfate ...

Claims

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Application Information

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IPC IPC(8): C03B18/02C03B5/225C03C1/00C03C3/087
CPCC03B5/225C03B18/02C03C1/00C03C3/087
Inventor 谢军王自强郭卫张艳娟刘学理陈琰姚佩庄春鹏张灿知靳东良
Owner 中建材(濮阳)光电材料有限公司
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