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High borosilicate glass tube with chemical stability and processing technology thereof

A high borosilicate glass, chemical stability technology, applied in glass production, glass molding, glass furnace equipment and other directions, can solve the problems of low process difficulty, affecting the quality of glass tubes, etc., to enhance clarification and homogenization, improve preparation Stability, viscosity reduction effect

Active Publication Date: 2022-02-01
常州隆兴玻璃制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the coating in the glass tube, compared with the direct sputtering of metal, the use of roller coating and other segmented coating slurry is less difficult in the process; at the same time, a heat treatment process is generally set up to enhance the adhesion and chemical resistance of the coating ; However, there are micro-cracks in the coating due to high-temperature calcination, which affects the final quality of the glass tube

Method used

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  • High borosilicate glass tube with chemical stability and processing technology thereof

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Experimental program
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Effect test

Embodiment 1

[0030] Step 1: (1) Mix silicon dioxide, calcium oxide, aluminum oxide, and polymethylcellulose with a mass ratio of 7:1:2:10 to obtain a treatment agent; (2) Mix the mass ratio to 1:1.1 : 0.42 silica sand, rice husk ash, and treatment agent are mixed evenly, add water to make microspheres, and dry; transfer to an electric arc furnace, set the temperature at 2000°C for smelting for 50 minutes, cool and crush; place in a 12% hydrochloric acid solution , set the liquid-solid ratio to 10mL / g, acid leaching at 25°C for 16 hours, filter and separate to obtain the filter residue and filtrate; wash and dry the filter residue to obtain raw material A; add cerium chloride to the filtrate, concentrate, add ammonia water, and precipitate Precipitation, heat treatment to obtain raw material B;

[0031] Step 2: Mix 80 parts of raw material A, 13 parts of boron oxide, 4.2 parts of raw material B, 4.3 parts of sodium oxide, 1.5 parts of barium oxide, and 3 parts of clarifying agent by ball mi...

Embodiment 2

[0035] Step 1: (1) Mix silicon dioxide, calcium oxide, aluminum oxide, and polymethylcellulose with a mass ratio of 7:1:2:10 to obtain a treatment agent; (2) Mix the mass ratio to 1:1 : Mix 0.4 silica sand, rice husk ash, and treatment agent evenly, add water to make microspheres, and dry; transfer to an electric arc furnace, set the temperature at 1800 ° C for 60 minutes, cool and crush; place in a 12% hydrochloric acid solution , set the liquid-solid ratio to 8mL / g, acid leaching at 30°C for 18 hours, filter and separate to obtain the filter residue and filtrate; wash and dry the filter residue to obtain raw material A; add cerium chloride to the filtrate, concentrate, add ammonia water, and precipitate Precipitation, heat treatment to obtain raw material B;

[0036] Step 2: Mix 78 parts of raw material A, 12 parts of boron oxide, 4 parts of raw material B, 4 parts of sodium oxide, 0.5 parts of barium oxide, and 2.5 parts of clarifying agent by ball milling, place in a high-...

Embodiment 3

[0040] Step 1: (1) Mix silicon dioxide, calcium oxide, aluminum oxide, and polymethylcellulose with a mass ratio of 7:1:2:10 to obtain a treatment agent; (2) Mix the mass ratio to 1:1.2 : 0.45 silica sand, rice husk ash, and treatment agent are mixed evenly, added water to make microspheres, and dried; transferred to an electric arc furnace, set the temperature at 2000 ° C for 60 minutes, cooled and crushed; placed in a hydrochloric acid solution with a concentration of 12% , set the liquid-solid ratio to 10mL / g, acid leaching at 20°C for 12 hours, filter and separate to obtain the filter residue and filtrate; wash and dry the filter residue to obtain raw material A; add cerium chloride to the filtrate, concentrate, add ammonia water, and precipitate Precipitation, heat treatment to obtain raw material B;

[0041] Step 2: Mix 82 parts of raw material A, 14 parts of boron oxide, 4.5 parts of raw material B, 4.5 parts of sodium oxide, 2.5 parts of barium oxide, and 4 parts of cl...

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Abstract

The invention discloses a high borosilicate glass tube with chemical stability and a processing technology thereof. The processing technology comprises the following steps: 1, uniformly mixing silica sand, rice hull ash and a treating agent, adding water to prepare microspheres, and drying; transferring into an electric arc furnace, smelting, cooling and grinding; placing in a hydrochloric acid solution, carrying out acid leaching, filtering and separating to obtain filter residues and filtrate; washing and drying filter residues to obtain a raw material A; adding cerium chloride into the filtrate, concentrating, adding ammonia water, precipitating, and carrying out heat treatment to obtain a raw material B; 2, ball-milling and mixing the raw material A, boric oxide, the raw material B, sodium oxide, barium oxide and a clarifying agent, putting the mixture into a high-temperature furnace, and heating and melting to obtain molten glass; cooling to a certain temperature, pulling out and molding; annealing to obtain a glass tube substrate; and 3, coating the surface of the glass tube substrate with the slurry A, and carrying out primary heat treatment; and coating the slurry B again, dipping in the slurry C, scraping the wall by using dimethyl silicone oil, and carrying out secondary heat treatment to obtain the high borosilicate glass tube.

Description

technical field [0001] The invention relates to the technical field of high borosilicate glass, in particular to a chemically stable high borosilicate glass tube and its processing technology. Background technique [0002] High borosilicate glass is a glass with a boron oxide content of more than 10% and a silicon dioxide content of more than 78%. Due to the high content of these two substances, it has excellent hardness, water resistance, acid resistance, and alkali resistance. Performance, is widely used in medicine, aerospace, chemical industry, military and other fields. At the same time, the high content of boron and low content of alkali oxides also lead to problems such as high melting point, high viscosity, and boron volatilization in the production process of high borosilicate glass, resulting in poor clarification, bubbles or streaks in the finished glass, affect the quality of the glass. [0003] On the other hand, rice husk, as the second largest grain waste in...

Claims

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Application Information

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IPC IPC(8): C03C6/04C03C1/00C03B5/235C03B15/14C03C17/00
CPCC03C1/002C03C1/00C03C1/004C03B5/235C03B15/14C03C17/003C03C17/009C03C17/007Y02P40/57
Inventor 蒋孝仁
Owner 常州隆兴玻璃制品厂