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Decoloration agent for removing color of defoamer on ultrawhite high-turbine flat glass and using method

A technology of flat glass and decolorizer, which is applied in glass furnace equipment, glass manufacturing equipment, manufacturing tools, etc., can solve problems such as the influence of glass color, and achieve the effect of reducing raw material costs

Active Publication Date: 2019-05-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is aimed at the problem that the titanium ions introduced into the ultra-clear and high-transparency glass raw materials and the titanium ions introduced by using a composite defoamer affect the color of the glass. The decolorizer and usage method for coloring of high-transparency flat glass can not only ensure the normal use of the defoamer, achieve the purpose of reducing the temperature and delay the service life of the kiln, but also can deal with the overall glass "" caused by the introduction of titanium ions into the defoamer and raw materials. "colored" effect, reduce the cost of raw materials

Method used

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  • Decoloration agent for removing color of defoamer on ultrawhite high-turbine flat glass and using method
  • Decoloration agent for removing color of defoamer on ultrawhite high-turbine flat glass and using method
  • Decoloration agent for removing color of defoamer on ultrawhite high-turbine flat glass and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0024] The chemical composition of the ultra-white and high-transparency flat glass used in Examples 1-8 is: SiO 2 60.0wt%, Al 2 o 3 1.5wt%, MgO is 4.0wt%, CaO is 8.0wt%, Na 2 O is 14.0wt%, Fe 2 o 3 90ppm, TiO 2 50ppm.

[0025] Examples 1-8 all select high-purity silica sand, alumina powder, limestone, dolomite, soda ash, and thenardite raw materials according to the above-mentioned chemical composition of the glass. The specifications of each raw material are as follows: high-purity silica sand (SiO 2 ≥98.5wt%, Al 2 o 3 ≤1.1wt%, Fe 2 o 3 ≤100ppm; TiO 2 content≤60ppm), alumina powder (Al 2 o 3 ≥99.0wt%, Fe 2 o 3 ≤200ppm;), limestone (CaO is 55.00±0.5%wt%, Fe 2 o 3 ≤80ppm; TiO 2 content≤80ppm), dolomite (MgO is 21.00±1.0wt%, CaO is 32.00±1.0wt%, Fe 2 o 3 ≤80ppm; TiO 2 content≤80ppm), soda ash (Na 2 CO 3 ≥99.5wt%, Fe 2 o 3 ≤50ppm; TiO 2 content ≤50ppm), thenardite (Na 2 SO 3 ≥99.0wt%, Fe 2 o 3 ≤100ppm; TiO 2 content≤50ppm).

[0026] In Examples 1-...

Embodiment 2

[0035] Based on the chemical composition and test results of Example 1, a trial production was carried out in a company's 550 tons / day ultra-clear and high-permeable float flat glass float production line, and the raw materials used mainly include high-purity silica sand (SiO ≥ 98.5wt%) , Al 2 o 3 ≤1.1wt%, Fe 2 o 3 ≤100ppm; TiO 2 content≤60ppm), alumina powder (Al 2 o 3 ≥99.0wt%, Fe 2 o 3 ≤200ppm;), limestone (CaO is 55.00±0.5%wt%, Fe 2 o 3 ≤80ppm; TiO 2 content≤80ppm), dolomite (MgO is 21.00±1.0wt%, CaO is 32.00±1.0wt%, Fe 2 o 3 ≤80ppm; TiO 2 content≤80ppm), soda ash (Na 2 CO 3 ≥99.5wt%, Fe 2 o 3 ≤50ppm; TiO 2 content ≤50ppm), thenardite (Na 2 SO 3 ≥99.0wt%, Fe 2 o 3 ≤100ppm; TiO 2 Content ≤ 50ppm); Considering the production cost, the titanium ion raw material that can produce glass coloring is used;

[0036] The specific dosage of each raw material is as follows: 325 tons of high-purity silica sand; 2.5 tons of alumina powder; 90 tons of dolomite; 16 ...

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Abstract

The invention discloses a decoloration agent for removing color of defoamer on ultrawhite high-turbine flat glass and a using method. The decoloration agent is mainly composed of rubidium oxide and cobalt oxide according to a certain proportion. The decoloration agent is premixed with a proper amount of glass main material silica sand and then integrally mixed with other raw materials and enters akiln, and proper oxidizability of kiln flame area space is controlled to optimize decoloration effect.

Description

technical field [0001] The invention belongs to the field of ultra-white and high-transparency flat glass, and in particular relates to a decolorizer suitable for coloring with a composite defoamer in the production process of ultra-white and high-transparency flat glass. Background technique [0002] Ultra-clear high-transparency flat glass is widely used in construction, solar energy, electronic display and other fields, and its chemistry is mainly SiO 2 70~74.0wt%, Al 2 o 3 0~2.0wt%, CaO 6~10wt%, MgO 2~5wt%, Na 2 O is 12-15wt%, K 2 O is 0~2.0wt%, Fe 2 o 3 ≤120ppm, TiO 2 ≤80ppm, large-scale mass production has been realized by adopting float method; its main raw materials include silica sand, sulfate, carbonate, etc. These raw materials are melted in a special high-temperature furnace, and a large amount of gas is released during the melting process CO 2 , SO 2 A large amount of gas covers the surface of the molten glass. If the method of simply raising the meltin...

Claims

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Application Information

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IPC IPC(8): C03C1/00C03C6/04C03B5/173
Inventor 陈发伟韩建军陆平
Owner WUHAN UNIV OF TECH
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