CN105418095A - Low-heat-conduction light refractory material for glass melting kiln - Google Patents
Low-heat-conduction light refractory material for glass melting kiln Download PDFInfo
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- CN105418095A CN105418095A CN201510864761.6A CN201510864761A CN105418095A CN 105418095 A CN105418095 A CN 105418095A CN 201510864761 A CN201510864761 A CN 201510864761A CN 105418095 A CN105418095 A CN 105418095A
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- hull ash
- rice hull
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Abstract
The invention discloses a light-weight refractory material for a glass melting kiln. The light-weight refractory material adopts wastes after crop burning as a raw material, and is nontoxic and environment-friendly. The light-weight refractory material for the glass melting kiln has the advantages of small coefficient of thermal conduction, light weight, high strength, good thermal shock resistance, high refractoriness (more than 1800 DEG C) and the like. By using the light-weight refractory material for the glass melting kiln, disclosed by the invention, to replace a common large-size clay brick material on the glass melting kiln, the weight of the kiln can be greatly reduced by 55-68%.
Description
Technical field
The invention belongs to technical field of refractory materials, be specifically related to a kind of lightweight refractory for glass smelting kiln of low heat conduction.
Background technology
Industrial Stoves are the main energy consumption equipments in industrial production, and its power saving is a current important topic.For float glass Industrial Stoves, current float glass Industrial Stoves generally all adopt large-scale clay brick to build by laying bricks or stones, this brick volume density is all greater than 2.40g/cm3 usually, and thermal conductivity is greater than 1.00W/mk (hot side 1000 DEG C), large by the glass industry kiln thermal capacity of this brick masonry, rapid heat dissipation, heat-insulating property and thermal shock resistance poor, so cause glass furnace energy consumption high, thermo-efficiency is low, temperature is wayward, and work-ing life is short.
Prior art has had some to the research of lightweight refractory for glass smelting kiln, but still there is thermal conductivity crosses the shortcomings such as high.
The present invention aims to provide a kind of lightweight refractory for glass smelting kiln of low heat conduction, its performance obtains and significantly improves, lightweight refractory for glass smelting kiln of the present invention has that thermal conductivity is little, lightweight, intensity is high, good thermal shock, refractoriness are high advantages such as (> 1800 DEG C).Replace common large-scale clay brick material to be used on glass melter with lightweight refractory for glass smelting kiln of the present invention, can greatly alleviate kiln body weight, weight reduction can reach 55 ~ 68%.
Summary of the invention
The present invention is directed to shortcoming of the prior art, a kind of lightweight refractory for glass smelting kiln of low heat conduction is provided, its performance obtains and significantly improves, lightweight refractory for glass smelting kiln of the present invention has that thermal conductivity is little, lightweight, intensity is high, good thermal shock, refractoriness are high advantages such as (> 1800 DEG C).Replace common large-scale clay brick material to be used on glass melter with lightweight refractory for glass smelting kiln of the present invention, can greatly alleviate kiln body weight, weight reduction can reach 55 ~ 68%.
Object of the present invention can be achieved through the following technical solutions:
A kind of production method of lightweight refractory for glass smelting kiln of low heat conduction:
(1) rice hull ash is prepared:
Obtained rice hull ash after fully being burned at 680 DEG C by rice husk, carries out levigate with ball mill, crosses 150 orders and 250 mesh sieves respectively;
Be that 1:0.5 mixes by the rice hull ash of the rice hull ash of 150 order fineness and 250 order fineness with mass ratio;
(2) raw material mixing:
According to weight part, get 20-25 part rice hull ash, 20 parts of micro-pore mullite lightweight aggregates, 5-8 part pure calcium aluminate cement, 2 parts of sepiolite powders, 3.5-5.5 part mica powder, 2 part of 325 order spinel fine powder, 5 part of 500 order spinel fine powder, 2-3 part particle diameter is 10 μm of crystalline flake graphites, 0.5 part of particle diameter is 20 μm of silicon carbide, 3 parts of aquamaine stone flours, 0.1 part of Sodium hexametaphosphate 99;
(3) prepare:
By compositing formula batching, add suitable quantity of water and stir, then pour into a mould vibratory compaction, dry under 150 DEG C of conditions after maintenance, then high temperature two-step sintering in tunnel furnace:
800 DEG C of process 20min;
Then 1900 DEG C of process 25-29min are warming up to;
Finally cool, cutting, the obtained lightweight refractory for glass smelting kiln of polishing.
The present inventor is surprised to find that, in conjunction with special formula (comprising concrete component, ratio and particle diameter) and technologic optimization, through a large amount of experiments, surprisingly find under special composition and engineering, the lightweight refractory for glass smelting kiln of the low heat conduction that performance increases substantially can have been obtained.
Usefulness of the present invention is:
Lightweight refractory for glass smelting kiln of the present invention has that thermal conductivity is little, lightweight, intensity is high, good thermal shock, refractoriness are high advantages such as (> 1800 DEG C).Replace common large-scale clay brick material to be used on glass melter with lightweight refractory for glass smelting kiln of the present invention, can greatly alleviate kiln body weight, weight reduction can reach 55 ~ 68%.
Embodiment
embodiment 1:
A kind of production method of lightweight refractory for glass smelting kiln of low heat conduction:
(1) rice hull ash is prepared:
Obtained rice hull ash after fully being burned at 680 DEG C by rice husk, carries out levigate with ball mill, crosses 150 orders and 250 mesh sieves respectively;
Be that 1:0.5 mixes by the rice hull ash of the rice hull ash of 150 order fineness and 250 order fineness with mass ratio;
(2) raw material mixing:
According to weight part, get 20 parts of rice hull ash, 20 parts of micro-pore mullite lightweight aggregates, 8 parts of pure calcium aluminate cements, 2 parts of sepiolite powders, 3.5 parts of mica powders, 2 part of 325 order spinel fine powder, 5 part of 500 order spinel fine powder, 3 parts of particle diameters are 10 μm of crystalline flake graphites, 0.5 part of particle diameter is 20 μm of silicon carbide, 3 parts of aquamaine stone flours, 0.1 part of Sodium hexametaphosphate 99;
(3) prepare:
By compositing formula batching, add suitable quantity of water and stir, then pour into a mould vibratory compaction, dry under 150 DEG C of conditions after maintenance, then high temperature two-step sintering in tunnel furnace:
800 DEG C of process 20min;
Then 1900 DEG C of process 25min are warming up to;
Finally cool, cutting, the obtained lightweight refractory for glass smelting kiln of polishing.
The obtained lightweight refractory for glass smelting kiln of the present embodiment has that thermal conductivity is 0.59W/mk (hot side 1000 DEG C), lightweight, intensity are high, 1100 DEG C-water-cooled thermal shock number is greater than 8 times, the advantages such as refractoriness high (1800 DEG C).
Replace common large-scale clay brick material to be used on glass melter with the lightweight refractory for glass smelting kiln that the present embodiment obtains, can greatly alleviate kiln body weight, weight reduction can reach 68%.
embodiment 2:
A kind of production method of lightweight refractory for glass smelting kiln of low heat conduction:
(1) rice hull ash is prepared:
Obtained rice hull ash after fully being burned at 680 DEG C by rice husk, carries out levigate with ball mill, crosses 150 orders and 250 mesh sieves respectively;
Be that 1:0.5 mixes by the rice hull ash of the rice hull ash of 150 order fineness and 250 order fineness with mass ratio;
(2) raw material mixing:
According to weight part, get 20 parts of rice hull ash, 20 parts of micro-pore mullite lightweight aggregates, 5 parts of pure calcium aluminate cements, 2 parts of sepiolite powders, 5.5 parts of mica powders, 2 part of 325 order spinel fine powder, 5 part of 500 order spinel fine powder, 2 parts of particle diameters are 10 μm of crystalline flake graphites, 0.5 part of particle diameter is 20 μm of silicon carbide, 3 parts of aquamaine stone flours, 0.1 part of Sodium hexametaphosphate 99;
(3) prepare:
By compositing formula batching, add suitable quantity of water and stir, then pour into a mould vibratory compaction, dry under 150 DEG C of conditions after maintenance, then high temperature two-step sintering in tunnel furnace:
800 DEG C of process 20min;
Then 1900 DEG C of process 29min are warming up to;
Finally cool, cutting, the obtained lightweight refractory for glass smelting kiln of polishing.
The obtained lightweight refractory for glass smelting kiln of the present embodiment has that thermal conductivity is 0.39W/mk (hot side 1000 DEG C), lightweight, intensity are high, 1100 DEG C-water-cooled thermal shock number is greater than 21 times, the advantages such as refractoriness high (1800 DEG C).
Replace common large-scale clay brick material to be used on glass melter with the lightweight refractory for glass smelting kiln that the present embodiment obtains, can greatly alleviate kiln body weight, weight reduction can reach 55%.
embodiment 3:
A kind of production method of lightweight refractory for glass smelting kiln of low heat conduction:
(1) rice hull ash is prepared:
Obtained rice hull ash after fully being burned at 680 DEG C by rice husk, carries out levigate with ball mill, crosses 150 orders and 250 mesh sieves respectively;
Be that 1:0.5 mixes by the rice hull ash of the rice hull ash of 150 order fineness and 250 order fineness with mass ratio;
(2) raw material mixing:
According to weight part, get 21 parts of rice hull ash, 20 parts of micro-pore mullite lightweight aggregates, 7 parts of pure calcium aluminate cements, 2 parts of sepiolite powders, 4.5 parts of mica powders, 2 part of 325 order spinel fine powder, 5 part of 500 order spinel fine powder, 3 parts of particle diameters are 10 μm of crystalline flake graphites, 0.5 part of particle diameter is 20 μm of silicon carbide, 3 parts of aquamaine stone flours, 0.1 part of Sodium hexametaphosphate 99;
(3) prepare:
By compositing formula batching, add suitable quantity of water and stir, then pour into a mould vibratory compaction, dry under 150 DEG C of conditions after maintenance, then high temperature two-step sintering in tunnel furnace:
800 DEG C of process 20min;
Then 1900 DEG C of process 26min are warming up to;
Finally cool, cutting, the obtained lightweight refractory for glass smelting kiln of polishing.
The obtained lightweight refractory for glass smelting kiln of the present embodiment has that thermal conductivity is 0.41W/mk (hot side 1000 DEG C), lightweight, intensity are high, 1100 DEG C-water-cooled thermal shock number is greater than 10 times, the advantages such as refractoriness high (1800 DEG C).
Replace common large-scale clay brick material to be used on glass melter with the lightweight refractory for glass smelting kiln that the present embodiment obtains, can greatly alleviate kiln body weight, weight reduction can reach 67%.
embodiment 4:
A kind of production method of lightweight refractory for glass smelting kiln of low heat conduction:
(1) rice hull ash is prepared:
Obtained rice hull ash after fully being burned at 680 DEG C by rice husk, carries out levigate with ball mill, crosses 150 orders and 250 mesh sieves respectively;
Be that 1:0.5 mixes by the rice hull ash of the rice hull ash of 150 order fineness and 250 order fineness with mass ratio;
(2) raw material mixing:
According to weight part, get 24 parts of rice hull ash, 20 parts of micro-pore mullite lightweight aggregates, 6 parts of pure calcium aluminate cements, 2 parts of sepiolite powders, 3.8 parts of mica powders, 2 part of 325 order spinel fine powder, 5 part of 500 order spinel fine powder, 2 parts of particle diameters are 10 μm of crystalline flake graphites, 0.5 part of particle diameter is 20 μm of silicon carbide, 3 parts of aquamaine stone flours, 0.1 part of Sodium hexametaphosphate 99;
(3) prepare:
By compositing formula batching, add suitable quantity of water and stir, then pour into a mould vibratory compaction, dry under 150 DEG C of conditions after maintenance, then high temperature two-step sintering in tunnel furnace:
800 DEG C of process 20min;
Then 1900 DEG C of process 28min are warming up to;
Finally cool, cutting, the obtained lightweight refractory for glass smelting kiln of polishing.
The obtained lightweight refractory for glass smelting kiln of the present embodiment has that thermal conductivity is 0.55W/mk (hot side 1000 DEG C), lightweight, intensity are high, 1100 DEG C-water-cooled thermal shock number is greater than 19 times, the advantages such as refractoriness high (1800 DEG C).
Replace common large-scale clay brick material to be used on glass melter with the lightweight refractory for glass smelting kiln that the present embodiment obtains, can greatly alleviate kiln body weight, weight reduction can reach 58%.
embodiment 5:
A kind of production method of lightweight refractory for glass smelting kiln of low heat conduction:
(1) rice hull ash is prepared:
Obtained rice hull ash after fully being burned at 680 DEG C by rice husk, carries out levigate with ball mill, crosses 150 orders and 250 mesh sieves respectively;
Be that 1:0.5 mixes by the rice hull ash of the rice hull ash of 150 order fineness and 250 order fineness with mass ratio;
(2) raw material mixing:
According to weight part, get 22 parts of rice hull ash, 20 parts of micro-pore mullite lightweight aggregates, 8 parts of pure calcium aluminate cements, 2 parts of sepiolite powders, 5.1 parts of mica powders, 2 part of 325 order spinel fine powder, 5 part of 500 order spinel fine powder, 3 parts of particle diameters are 10 μm of crystalline flake graphites, 0.5 part of particle diameter is 20 μm of silicon carbide, 3 parts of aquamaine stone flours, 0.1 part of Sodium hexametaphosphate 99;
(3) prepare:
By compositing formula batching, add suitable quantity of water and stir, then pour into a mould vibratory compaction, dry under 150 DEG C of conditions after maintenance, then high temperature two-step sintering in tunnel furnace:
800 DEG C of process 20min;
Then 1900 DEG C of process 27min are warming up to;
Finally cool, cutting, the obtained lightweight refractory for glass smelting kiln of polishing.
The obtained lightweight refractory for glass smelting kiln of the present embodiment has that thermal conductivity is 0.45W/mk (hot side 1000 DEG C), lightweight, intensity are high, 1100 DEG C-water-cooled thermal shock number is greater than 13 times, the advantages such as refractoriness high (1800 DEG C).
Replace common large-scale clay brick material to be used on glass melter with the lightweight refractory for glass smelting kiln that the present embodiment obtains, can greatly alleviate kiln body weight, weight reduction can reach 60%.
embodiment 6 contrast experiment:
The production method of lightweight refractory for glass smelting kiln:
(1) rice hull ash is prepared:
Obtained rice hull ash after fully being burned at 680 DEG C by rice husk, carries out levigate with ball mill, crosses 150 mesh sieves;
(2) raw material mixing:
According to weight part, get 36 parts of rice hull ash, 20 parts of micro-pore mullite lightweight aggregates, 10 parts of pure calcium aluminate cements, 2 parts of sepiolite powders, 2 parts of mica powders, 7 part of 325 order spinel fine powder, 2 parts of particle diameters are 10 μm of crystalline flake graphites, and 0.5 part of particle diameter is 20 μm of silicon carbide, 3 parts of aquamaine stone flours, 0.1 part of Sodium hexametaphosphate 99;
(3) prepare:
By compositing formula batching, add suitable quantity of water and stir, then pour into a mould vibratory compaction, dry after maintenance under 150 DEG C of conditions, then high temperature one step sintering in tunnel furnace, finally cools, cutting, the obtained lightweight refractory for glass smelting kiln of polishing.
The obtained lightweight refractory for glass smelting kiln of the present embodiment has that thermal conductivity is 0.88W/mk (hot side 1000 DEG C), lightweight, intensity are high, 1100 DEG C-water-cooled thermal shock number is less than 5 times, the advantages such as refractoriness high (1600 DEG C).
Replace common large-scale clay brick material to be used on glass melter with the lightweight refractory for glass smelting kiln that the present embodiment obtains, can greatly alleviate kiln body weight, weight reduction can reach 38%.
As can be seen here, the invention provides a kind of lightweight refractory for glass smelting kiln of low heat conduction, its performance obtains and significantly improves, lightweight refractory for glass smelting kiln of the present invention has that thermal conductivity is little, lightweight, intensity is high, good thermal shock, refractoriness are high advantages such as (> 1800 DEG C).Replace common large-scale clay brick material to be used on glass melter with lightweight refractory for glass smelting kiln of the present invention, can greatly alleviate kiln body weight, weight reduction can reach 63%.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a production method for the lightweight refractory for glass smelting kiln of low heat conduction, is characterized in that, step is as follows:
(1) rice hull ash is prepared:
Obtained rice hull ash after fully being burned at 680 DEG C by rice husk, carries out levigate with ball mill, crosses 150 orders and 250 mesh sieves respectively;
Be that 1:0.5 mixes by the rice hull ash of the rice hull ash of 150 order fineness and 250 order fineness with mass ratio;
(2) raw material mixing:
According to weight part, get 20-25 part rice hull ash, 20 parts of micro-pore mullite lightweight aggregates, 5-8 part pure calcium aluminate cement, 2 parts of sepiolite powders, 3.5-5.5 part mica powder, 2 part of 325 order spinel fine powder, 5 part of 500 order spinel fine powder, 2-3 part particle diameter is 10 μm of crystalline flake graphites, 0.5 part of particle diameter is 20 μm of silicon carbide, 3 parts of aquamaine stone flours, 0.1 part of Sodium hexametaphosphate 99;
(3) prepare:
By compositing formula batching, add suitable quantity of water and stir, then pour into a mould vibratory compaction, dry after maintenance under 150 DEG C of conditions, then high temperature two-step sintering in tunnel furnace, finally cools, cutting, the obtained lightweight refractory for glass smelting kiln of polishing.
2. the production method of the lightweight refractory for glass smelting kiln of low heat conduction according to claim 1, is characterized in that:
High temperature two-step sintering in tunnel furnace:
800 DEG C of process 20min;
Then 1900 DEG C of process 25-29min are warming up to.
3. the production method described in claim 1-2 produces the lightweight refractory for glass smelting kiln of the low heat conduction obtained.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107759196A (en) * | 2017-10-16 | 2018-03-06 | 东台市悦兴耐火材料有限公司 | Heat-insulated mullite brick of novel environment-friendly and preparation method thereof |
| CN108191418A (en) * | 2018-03-02 | 2018-06-22 | 合肥铭佑高温技术有限公司 | A kind of corrosion-resistant thermal insulation fire-resistant brick of glass furnace |
| CN109553428A (en) * | 2019-01-25 | 2019-04-02 | 江苏苏冶新材料科技有限公司 | Ceramic fibre castable refractory and preparation method thereof |
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| CN1041648A (en) * | 1989-10-28 | 1990-04-25 | 江西省建材工业科研设计院 | High strength light weight rice hull ash insulation brick and method for making thereof |
| CN101768006A (en) * | 2010-01-13 | 2010-07-07 | 新密市中原特种耐火材料有限公司 | Lightweight refractory for glass smelting kiln |
| CN102690092A (en) * | 2012-06-04 | 2012-09-26 | 同济大学 | Low-temperature rice hull ash doped cement-base shrinkage-free grouting material and using method thereof |
-
2015
- 2015-12-01 CN CN201510864761.6A patent/CN105418095B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041648A (en) * | 1989-10-28 | 1990-04-25 | 江西省建材工业科研设计院 | High strength light weight rice hull ash insulation brick and method for making thereof |
| CN101768006A (en) * | 2010-01-13 | 2010-07-07 | 新密市中原特种耐火材料有限公司 | Lightweight refractory for glass smelting kiln |
| CN102690092A (en) * | 2012-06-04 | 2012-09-26 | 同济大学 | Low-temperature rice hull ash doped cement-base shrinkage-free grouting material and using method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107759196A (en) * | 2017-10-16 | 2018-03-06 | 东台市悦兴耐火材料有限公司 | Heat-insulated mullite brick of novel environment-friendly and preparation method thereof |
| CN108191418A (en) * | 2018-03-02 | 2018-06-22 | 合肥铭佑高温技术有限公司 | A kind of corrosion-resistant thermal insulation fire-resistant brick of glass furnace |
| CN109553428A (en) * | 2019-01-25 | 2019-04-02 | 江苏苏冶新材料科技有限公司 | Ceramic fibre castable refractory and preparation method thereof |
| CN109553428B (en) * | 2019-01-25 | 2021-11-23 | 江苏苏冶新材料科技有限公司 | Ceramic fiber refractory castable and preparation method thereof |
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