CN1052840A - Low-hydrogen diffused prefabricated block used for tin bath bottom in float glass production - Google Patents
Low-hydrogen diffused prefabricated block used for tin bath bottom in float glass production Download PDFInfo
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- CN1052840A CN1052840A CN 89109697 CN89109697A CN1052840A CN 1052840 A CN1052840 A CN 1052840A CN 89109697 CN89109697 CN 89109697 CN 89109697 A CN89109697 A CN 89109697A CN 1052840 A CN1052840 A CN 1052840A
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Abstract
The present invention relates to by aluminosilicate property grog refractory, silicon oxide super-fine powder, dispersion agent and imitate the mixture that flocculation agent is formed late, add 5-6% moisture content, adopt the lash method moulding of two steps, the method for prefabricated section at the bottom of low temperature (1100 ℃-1250 ℃) the thermal treatment manufacturing float glass tin bath.This prefabricated section has good physicochemical property, volume density height, void content is low, intensity is big, the hydrogen diffusion index is low, and anti-tin oxidation susceptibility is good.Have advantages such as production technique is simplified, goods attrition process amount is few simultaneously.
Description
What the present invention relates to is: use chamotte as aggregate, with chamotte powder of clay or high-alumina powder clinker or mullite synthesizing powder or their both powder mixs of centre, add the active silica super-fine powder as matrix, and the dispersion agent and a spot of slow effect flocculation agent that add trace be mixed with compound, and the water that adds 5-6% mixes.The method of prefabricated section at the bottom of the moulding of employing two steps vibrations settling process, low temperature (1100 ℃-1250 ℃) the thermal treatment manufacturing molten tin bath.
According to the introduction of relevant technologies document, U.S. C-E company, West Germany Didier company, Osaka, Japan ceramic industry Co., Ltd., and syphon is as the ridge material with chamotte at the bottom of the manufacturer production molten tin bath such as more domestic fire-resistant factories, with raw clay as wedding agent or plasticity material, adopt ramming method or machine platen press or plaster mould slurry casting method or the moulding of vacuum mud plaster mould casting, high temperature (1350-1380 ℃) calcining is made.
Ramming method and machine platen press are made syphon, because the need layering is reinforced or layered material is too thick, be easy to generate internal lamination, and weave construction are inhomogeneous.
Plaster mould casting or vacuum plaster mould casting, because suction makes base substrate solidify, easily cause base substrate outer asynchronous with center solidifies speed by plaster mould, and causes the base substrate section U type crackle to occur, simultaneously because cast moisture content big (12%), drying and firing period are long, and energy consumption is big.
Also there is following disadvantage in above-mentioned four kinds of methods: burn back goods void content height (about in the of 20%), the low (2.1-2.2g/cm of volume density
3), deflection is big, and yield rate is low, the attrition process amount is big, cost is high.
The objective of the invention is to: improve the physicochemical property of goods, reduce the hydrogen diffusion index, improve the ability that prevents the tin oxidation, shorten the production cycle simultaneously, energy efficient, raising yield rate, reduce the heat treatment process amount, reduce cost.
Used for tin bath bottom in float glass production prefabricated section of the present invention is prepared with well done material, and the line when burning till with reduction changes and deflection, improves volume stability.With maximum critical granularity is 8-10mm, and the chamotte that is divided into the grain size distribution of 3-4 retaining is as aggregate, and its chemical ingredients is 40-50%Al
2O
3,＜1.3%Fe
2O
3,＜1.0%R
2O.With the chamotte of granularity＜0.074mm, or high-alumina powder clinker or mullite synthesizing powder or their middle both powder mixs, adding the active silica super-fine powder as matrix, the requirement of the chemical ingredients of matrix is: Fe
2O
3＜1.5%, R
2O＜1.0%.Aggregate is (60-70) with the ratio of matrix: (30-40).Be added with the dispersion agent of a spot of slow effect flocculation agent and trace in addition.
Being added with active super-fine powder is with the purpose of imitating flocculation agent late: after the moulding of employing casting, base substrate self takes place to condense combination, makes the inside and outside curing synchronously of base substrate, shortens demould time.But be added with active super-fine powder acceleration of sintering simultaneously, reduce firing temperature, improve product strength.Used slow effect flocculation agent can be followingization and thing: 3CaOSiO
2, CaOAl
2O
3, 2CaOSiO
2, CaO2Al
2O
3, 12CaO, 7Al
2O
3, Ca(OH)
2, Mg(OH)
2Deng.
The dispersion agent purpose that is added with trace is to reduce moulding water consumption (reducing to 5-6% by 8-12%), shortens time of drying, obtains the uniform tissue structure.Used dispersion agent can be organic or inorganic tensio-active agent.Inorganic has: trisodium phosphate, tripoly phosphate sodium STPP, sodium tetrapolyphosphate, Sodium hexametaphosphate 99, super sodium polyphosphate etc.Organically have: β-alkyl naphthalene sulfonate formaldehyde condensation products, ligninsulfonate, polyacrylic acid, Citrate trianion etc.
After becoming thing to add 5-6% water to mix with above-mentioned ingredient groups, can make and have better thixotropic pug.Adopt the moulding of two steps vibrations settling process, promptly pug adds in the steel model that is shaken by the distributor of vibrations, and pug slowly sinks in the material body of bleeding.Adopt this two steps vibrations settling process, it is low to obtain void content, the weave construction of even compact.The good base substrate of cast gets final product the demoulding through leaving standstill in 16-24 hour after solidifying, and through suitably dry, can go into kiln to moisture content＜2% to heat-treat again, and thermal treatment temp is 1100 ℃-1250 ℃, and soaking time is 16-24 hour.
Prefabricated section has higher volume density (2.3-2.4g/cm at the bottom of adopting the inventive method to make molten tin bath
3) low void content (＜16%), higher anti-folding and ultimate compression strength (＞10MPa and 60MPa), low hydrogen diffusion index (＜40mmH
2And prevent that the performance of tin oxidation is good O).Also have following advantage simultaneously: the goods amount of finish is few after simplification production technique, shortening production cycle, yield rate height, the burning, energy consumption is low, cost is low.
Embodiment
The constituent of prefabricated section is at the bottom of the float tin groove: chamotte aggregate 8-3mm54%, 3-1mm30%, 1-0.074mm16%.Matrix is＜powder of 0.074mm, and wherein the mullite synthesizing chamotte powder is 70%, and the active silica super-fine powder is 19%, and imitating flocculation agent late is 11%.Aggregate is 65: 35 with the ratio of matrix.Adding the water 5-6.5% wet mixing contain dispersion agent (siccative gross weight 0.1%) closes evenly.Then wet feed is added on the distributor of vibrations, falls in the punching block that is shaken, and gently sink in the material body of bleeding by the distributor pug.Leave standstill after the moulding to solidify and can slough mould in 16-24 hour and pull, drying can be gone into kiln thermal treatment to moisture content＜2% again, and the thermal treatment top temperature is 1250 ℃.Be incubated after 24 hours naturally cooling in kiln.The physicochemical property of its bottom land brick is listed in the table below.List file names with the physicochemical property that domestic and international additive method makes the bottom land brick, as a means of contrast.
In addition, also utilize crucible method that the anti-tin of goods of the present invention and U.S.'s C-E company goods and domestic certain factory's vacuum pouring method goods is corroded and prevent that the tin oxidation from having made simultaneous test.Test-results shows: the aggressiveness that prevents tin oxidation and anti-oxidant tin of goods of the present invention is better than other goods.
Product of the present invention and similar products at home and abroad performance comparison table
Claims (3)
1, a kind of production method of used for tin bath bottom in float glass production refractory materials prefabricated section is characterized in that comprising in the component:
The aluminosilicate property grog
The active silica super-fine powder
A small amount of flocculation agent of imitating late is as 3CaOSiO
2, 2CaOSiO
2, 12CaO7Al
2O
3,
CaOAl
2O, CaO2Al
2O
3, Ca (OH)
2, Mg (OH)
2Deng.
The trace dispersion agent is as organic compound β-alkyl naphthalene sulfonate formaldehyde condensation products, ligninsulfonate, polyacrylic acid, Citrate trianion etc., mineral compound trisodium phosphate, tripoly phosphate sodium STPP, sodium tetrapolyphosphate, Sodium hexametaphosphate 99, super sodium polyphosphate and water glass etc.
Add 5-6% (weight) water concocting and become to have thixotropic pug, adopt the moulding of two steps vibrations settling process, make through 1100 ℃ of-1250 ℃ of thermal treatments of low temperature.
2, according to claim 1, described method is characterized in that: the aluminosilicate property grog comprises chamotte, high alumina, mullite synthesizing grog; Aggregate is a chamotte in the pug, and size composition is 8-3mm 50-60%(weight), 3-1mm 20-30%(weight), 1-0.074mm 15-20%(weight); Chemical constitution is a 40-50%(weight) Al
2O
3,＜1.3%(weight) and Fe
2O
3,＜0.8%(weight) and R
2O; Matrix is chamotte powder of clay, or high-alumina powder clinker, or mullite synthesizing powder, both powder mixs in the middle of them, add the active silica super-fine powder and imitate late that flocculation agent forms, granularity＜0.074mm, three's ratio is 65-75: 15-25: 5-15(weight), aggregate is (60-70) with the ratio of matrix in the pug: (30-40) (weight).
3, method according to claim 1 is characterized in that, the add-on of dispersion agent is the 0.01-0.3% of pug dry weight, and soluble in water in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109697 CN1052840A (en) | 1989-12-27 | 1989-12-27 | Low-hydrogen diffused prefabricated block used for tin bath bottom in float glass production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109697 CN1052840A (en) | 1989-12-27 | 1989-12-27 | Low-hydrogen diffused prefabricated block used for tin bath bottom in float glass production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1052840A true CN1052840A (en) | 1991-07-10 |
Family
ID=4858133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89109697 Pending CN1052840A (en) | 1989-12-27 | 1989-12-27 | Low-hydrogen diffused prefabricated block used for tin bath bottom in float glass production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1052840A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519268A (en) * | 2009-03-16 | 2009-09-02 | 北京创导高科绝热材料有限公司 | Method for producing insulating structural component used for glass melting furnace and insulating structural component produced by the method |
| CN104914020A (en) * | 2015-05-09 | 2015-09-16 | 浙江瑞泰耐火材料科技有限公司 | Tin bath bottom brick hydrogen diffusion degree detection apparatus |
| CN114249596A (en) * | 2020-09-23 | 2022-03-29 | 河南中原特种耐火材料有限公司 | Semi-light clay brick for glass melting furnace pool bottom cushion layer and preparation method thereof |
-
1989
- 1989-12-27 CN CN 89109697 patent/CN1052840A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519268A (en) * | 2009-03-16 | 2009-09-02 | 北京创导高科绝热材料有限公司 | Method for producing insulating structural component used for glass melting furnace and insulating structural component produced by the method |
| CN104914020A (en) * | 2015-05-09 | 2015-09-16 | 浙江瑞泰耐火材料科技有限公司 | Tin bath bottom brick hydrogen diffusion degree detection apparatus |
| CN114249596A (en) * | 2020-09-23 | 2022-03-29 | 河南中原特种耐火材料有限公司 | Semi-light clay brick for glass melting furnace pool bottom cushion layer and preparation method thereof |
| CN114249596B (en) * | 2020-09-23 | 2023-03-17 | 河南中原特种耐火材料有限公司 | Semi-light clay brick for glass melting furnace pool bottom cushion layer and preparation method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |