A method and device for preparing high borosilicate glass by float method

A high borosilicate glass and high borosilicate technology, applied in glass production, glass furnace equipment, glass manufacturing equipment and other directions, to achieve the effect of improving the life of the kiln, reducing the generation of defects, and reducing glass defects

Active Publication Date: 2022-06-17
凤阳凯盛硅材料有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for preparing high borosilicate glass by float method in order to solve the above-mentioned problems existing in the production of existing all-electric melting furnace

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  • A method and device for preparing high borosilicate glass by float method

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Effect test

Embodiment 1

[0033] A method for preparing high borosilicate 3.3 float glass, which adopts the following device: comprising a furnace body (1), a feeding system (2) and a platinum channel system (3) which are connected in sequence;

[0034] The bottom of the furnace body (1) is evenly distributed with 15 groups of heating electrodes, which are sequentially divided into a feeding area (5), a melting part (6), a clarification and homogenization area (7) from the bottom of the furnace body (1), and the clarification and homogenization A liquid glass device (9) is arranged behind the chemical zone (7); combustion lances (4) (fuel is liquid and / or gaseous fuel) are arranged on both sides of the furnace body (1), and the combustion lances are evenly distributed in the kiln. On both sides of the body (1), there are 15 pieces on each side, and a kiln flue (10) is arranged on the inner side of the furnace body (1) to take away some of the volatilized batch materials and the flue gas formed by combus...

Embodiment 2

[0045] A method for preparing high borosilicate 4.0 float glass, using the device described in Embodiment 1, includes the following steps:

[0046] (1) In terms of weight percentage, the composition of the borosilicate glass batch is as follows: 35% of the high borosilicate 3.3 broken glass produced by our company, 65% of the batching material, and the batching material is composed of the following raw materials: 72% of silica sand, hydrogen Alumina 7%, borax 13%, boric acid 3%, soda ash 2%, potassium carbonate 1%, sodium chloride 1%, limestone 1%; ) for melting, the fuel is natural gas, and the combustion-supporting gas is high-purity oxygen. By adjusting the natural gas flow rate of the burner to 480Nm3 / h, the temperature of the upper part of the molten glass is adjusted, and the temperature of the bottom of the molten glass pool is adjusted by adjusting the power of the electrode group. The temperature of the upper part of the melting part (6) is 1600°C, and the temperature...

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Abstract

The present invention relates to a method and device for preparing high borosilicate glass by float method. Temperature 1350~1650°C; (2) Clarification and homogenization zone controls the temperature of the upper part of the kiln to 1600~1750°C, the temperature of the lower part is 1600~1750°C, and clarifies for 30 to 80 minutes; (3) The glass liquid after preliminary clarification and homogenization is fed The system enters the platinum channel system, and the temperature of the molten glass in the feeding system is controlled at 1400-1550°C, the temperature of the molten glass in the platinum channel system is 1300-1500°C, and the stirring speed is 5-15 r / min; (4) Clarification and homogenization are complete The molten glass passes through the platinum-coated gate and enters the tin tank in a controlled manner to make a high borosilicate glass plate. Advantages of the present invention: the device can greatly increase the amount of glass melting and improve the quality of glass; a stable silicon-rich layer is formed on the surface of molten glass to suppress B 2 o 3 of volatilization.

Description

technical field [0001] The invention relates to the field of high borosilicate float glass production, in particular to a method and device for preparing high borosilicate glass by float method. Background technique [0002] High borosilicate glass, also known as hard glass, uses fuel or electric heating to achieve glass melting, and is processed by advanced production technology. It is a special glass material with low expansion rate, high temperature resistance, high strength, high hardness, high light transmittance and high chemical stability. The glass has high borosilicate content, also known as high borosilicate glass; it is mainly used in Household appliances, building fire protection, solar energy, chemicals, pharmaceutical packaging, electric light sources, craft accessories and other industries. At present, the domestic high borosilicate float glass is mainly imported, and the domestic production of high borosilicate float glass is mainly produced by all-electric ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/033C03B5/16C03B5/18C03B5/182C03B5/225C03B5/235C03B7/07C03B18/02C03C6/04
CPCC03C1/00C03B5/16C03B5/235C03B5/225C03B5/18C03B18/02C03B5/2353C03B5/182C03B5/033C03B7/07Y02P40/50
Inventor 曹艳平潘锦辉李宜谦李超韩祥潘友明
Owner 凤阳凯盛硅材料有限公司
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