CN101713235A - Forsterite light brick and preparation method thereof - Google Patents
Forsterite light brick and preparation method thereof Download PDFInfo
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- CN101713235A CN101713235A CN200910272652A CN200910272652A CN101713235A CN 101713235 A CN101713235 A CN 101713235A CN 200910272652 A CN200910272652 A CN 200910272652A CN 200910272652 A CN200910272652 A CN 200910272652A CN 101713235 A CN101713235 A CN 101713235A
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Abstract
The invention relates to a forsterite light brick and a preparation method thereof. The method adopts the following technical scheme: mixing 60 to 95 weight percent of forsterite raw material and 5 to 40 weight percent of magnesium oxide; adding 25 to 45 weight percent of water, 0.05 to 0.5 weight percent of bonding agent, 0.1 to 0.5 weight percent of water reducer and 0 to 0.5 weight percent of mineralizer and uniformly mixing the mixture; adding foam made of 0.5 to 2 weight percent of foaming agent into the mixture; casting the mixture after uniformly stirring; naturally drying the mixture; baking the mixture at low temperature; and sintering the mixture at the temperature of between 1,300 and 1,550 DEG C, and preserving the heat for 2.5 to 12 hours. The forsterite light brick prepared by the invention has excellent compression strength, lower volume density and heat conductivity, and can be used in production of furnace construction insulating materials in steel, ceramic and other industries after being subjected to heat treatment at the temperature of between 1,300 and 1,550 DEG C; and the used forsterite raw material is forsterite tailings with few utilization value at present, which not only reduces production cost, but also can realize good economic and social benefit.
Description
Technical field
The invention belongs to the light-weight brick technical field, be specifically related to a kind of forsterite light brick and preparation method thereof.
Background technology
Energy conservation is one of economic important measures that keep sustainable development, and the insulation thermal insulation then is one of energy-conservation important measures.Thereby the light heat-insulation and heat-preservation material with micro-nano hole has consequence in the heat-insulation and heat-preservation field.High-quality light-weight refractory goods require high-temperature behavior good, and normal temperature strength is big, and coefficient of thermal conductivity is low, and heat-proof quality is good; And then the light material preparation method had higher requirement.
Series of advantages such as the white olivine light heat-insulating material has the compressive resistance height, bulk density is low, heat-proof quality good and the high-temperature thermal stability performance is good.It is the particularly novel high-strength light heat-insulating material used of smelting iron and steel, pottery and cement manufacture plant of hot industry.At present, produce the white olivine light material and mainly contain gas evolution method, porous material method etc.Gas evolution method can't guarantee the uniformity of pore, and unstable, causes the goods resistance to slag poor, as employing decomposition in situ method (Hu Limin, the Li Nan in the gas evolution method.Decomposition in situ prepares high-strength light forsterite material. refractory material .2005,39[4]: 283-285) forsterite thermal insulation material of preparation is not directly utilized forsterite mine tailing raw material on the one hand, is unfavorable for the utilization of resources; On the other hand, the uniformity of the pore that decomposition in situ produces can't guarantee and pore irregular, cause the intensity of goods and effect of heat insulation also can't guarantee.Porous material method restricted application, the energy consumption height; As being method (Deng Chengji, the Zhu Hongxi etc. of feedstock production forsterite heat light material with carbonate powder, chlorate and crude talc ore powder.A kind of forsterite heat light material and preparation method thereof, 200910060878.3); With chlorate, carbonate and forsterite original ore powder is method (Deng Chengji, the Zhu Hongxi etc. of feedstock production forsterite thermal insulation material.A kind of forsterite thermal insulation material and preparation method thereof, 200910060879.8); And the method (Deng Chengji, the Zhu Hongxi etc. that prepare forsterite heat light material with chlorate and forsterite original ore powder.A kind of high-thermoresistance forsterite light material and preparation method thereof, 200910060875.X) major defect of this series methods is embodied in: (1) complex manufacturing needs multiple working procedure to finish; (2) goods pore majority inhomogeneous and that form is an open pore, can influence the goods heat insulation and preservation effect; (3) be soaked in water and cause the serious waste of water resource and increase cost of production; (4) chlorine that produces in the sintering process directly enters in the air and pollutes the environment; (4) immersion is difficult to the residual chloride thing is cleaned, and the chloride fusing point is lower, and this will have a strong impact on the high temperature functional performance of goods.Or the forsterite heat light material of additive method preparation then or bulk density is bigger, or serviceability temperature is lower.
Summary of the invention
The present invention is intended to overcome the defective of prior art, and it is simple that purpose provides a kind of manufacture craft, energy-conserving and environment-protective, the preparation method of the white olivine light-weight brick of function admirable.Prepared white olivine light-weight brick has higher intensity, lower bulk density and coefficient of thermal conductivity.
For achieving the above object, the technical solution adopted in the present invention is: forsterite raw material and the 5～40wt% magnesia with 60～95wt% mixes earlier, adding the water of 25～45wt%, the binding material of 0.05～0.5wt%, water reducing agent and 0～0.5% mineralizer of 0.1～0.5wt% mixes, add the made foam of blowing agent of 0.5～2wt% again, moulding by casting after stirring, air dry, low-temperature bake, under 1300～1550 ℃ condition, burn till, be incubated 2.5～12 hours.
Wherein: the particle diameter of forsterite raw material is less than 200 orders; Magnesia is a kind of in light calcined magnesia, magnesite clinker, the fused magnesite, and particle diameter is all less than 180 orders; Binding material is a kind of in carboxymethyl cellulose, Ludox, the phenolic resins; Water reducing agent is more than one in sodium phosphate trimer, calgon, the sodium lignin sulfonate; Mineralizer or MgCl
2Or be NH
4OH.
Because adopt technique scheme, the used primary raw material forsterite of the present invention is the little forsterite mine tailing raw material of present value, cost is lower; Production technology is also very simple, by by moulding by casting, can be dropped in after burning till in the production of brickwork heat insulating material of industry-by-industries such as iron and steel, pottery and use; Whole process can not produce pernicious gas simultaneously, and environment has also been played must protective effect.The present invention adopts the forsterite light brick of foam method preparation, and the uniform small pore of a large amount of sealings that material internal forms helps improving the effect of heat insulation and the mechanical property of material, the bulk density 0.6～1.2g/cm of prepared forsterite light brick
3, coefficient of thermal conductivity 0.2～0.60w/ (m.k), compressive resistance 3.0～11.5MPa can satisfy the requirement of present thermal technology's industrial production well.
Therefore, the present invention has that cost of production is low, and technology is simple, energy-conserving and environment-protective, and the easy advantage of large-scale production, and the light-weight brick goods of producing also have higher intensity, lower bulk density and coefficient of thermal conductivity.Have society and economic worth widely.
The specific embodiment
The present invention will be further described below in conjunction with the specific embodiment, is not limiting the scope of the invention.
This specific embodiment is described below the improve parameter unification that will relate to: the particle diameter of forsterite raw material is less than 200 orders; The particle diameter of light calcined magnesia, magnesite clinker and fused magnesite is all less than 180 orders.To not give unnecessary details among the embodiment.
Embodiment 1:
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 60～70wt% and the light calcined magnesia of 30～40wt% are mixed, adding the water of 38～45wt%, the carboxymethyl cellulose of 0.05～0.2wt% and the sodium phosphate trimer of 0.1～0.3wt% mixes, add the made foam of blowing agent of 0.5～0.8wt% again, the back moulding by casting stirs, air dry, low-temperature bake burns till under 1450～1550 ℃ condition, is incubated 2.5～6 hours.
The bulk density of present embodiment 1 prepared forsterite light brick is 0.9～1.2g/cm
3, coefficient of thermal conductivity is 0.30～0.60w/ (m.k), compressive resistance reaches 3.0～10.8MPa.
Embodiment 2
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 70～75wt% and the light calcined magnesia of 25～30wt% are mixed, add the water of 35～42wt%, the phenolic resins of 0.1～0.4wt%, the sodium lignin sulfonate of 0.2～0.5wt% and the MgCl of 0.1～0.5wt%
2Mix, add the made foam of blowing agent of 0.8～2wt% again, the back moulding by casting that stirs, air dry, low-temperature bake burns till under 1400～1500 ℃ condition, is incubated 6.0～10 hours.
The bulk density of present embodiment 2 prepared forsterite light bricks is 0.8～1.1g/cm
3, coefficient of thermal conductivity is 0.30～0.50w/ (m.k), compressive resistance reaches 3.4～10.4MPa.
Embodiment 3
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 75～80wt% and the light calcined magnesia of 20～25wt% are mixed, add the water of 30～40wt%, the Ludox of 0.3～0.5wt%, the sodium phosphate trimer of 0.1～0.2wt%, the sodium lignin sulfonate of 0.05～0.3wt% and 0.1～0.4% MgCl
2Mix, add the made foam of blowing agent of 0.8～1.5wt% again, the back moulding by casting that stirs, air dry, low-temperature bake burns till under 1300～1500 ℃ condition, is incubated 8.0～12 hours.
The bulk density of present embodiment 3 prepared forsterite light bricks is 0.7～1.0g/cm
3, coefficient of thermal conductivity is 0.20-0.50w/ (m.k), compressive resistance reaches 3.2～9.4MPa.
Embodiment 4
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 80～90wt% and the light calcined magnesia of 10～20wt% are mixed, add the water of 25～40wt%, the carboxymethyl cellulose of 0.05～0.4wt%, the calgon of 0.1～0.3wt% and 0.05～0.4% MgCl
2Mix, add the made foam of blowing agent of 1.0～2.0wt% again, the back moulding by casting that stirs, air dry, low-temperature bake burns till under 1350～1500 ℃ condition, is incubated 2.5～10 hours.
The bulk density of present embodiment 4 prepared forsterite light bricks is 0.6～0.9g/cm
3, coefficient of thermal conductivity is 0.20～0.50w/ (m.k), compressive resistance reaches 3.6～11.5MPa.
Embodiment 5
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 80～85wt% and the light calcined magnesia of 15～20wt% are mixed, adding the water of 28～40wt%, the carboxymethyl cellulose of 0.05～0.3wt%, the calgon of 0.05～0.15wt% and the sodium phosphate trimer of 0.1～0.2wt% mixes, add the made foam of blowing agent of 0.5～1.0wt% again, the back moulding by casting stirs, air dry, low-temperature bake burns till under 1450～1550 ℃ condition, is incubated 6.0～10 hours.
The bulk density of present embodiment 5 prepared forsterite light bricks is 0.7～0.9g/cm
3, coefficient of thermal conductivity is 0.20～0.50w/ (m.k), compressive resistance reaches 3.6～10.8MPa.
Embodiment 6
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 85～90wt% and the light calcined magnesia of 10～15wt% are mixed, add the water of 25～35wt%, the carboxymethyl cellulose of 0.05～0.2wt%, the calgon of 0.1～0.3wt% and the MgCl of 0.05～0.2wt%
2Mix, add the made foam of blowing agent of 0.5～1.2wt% again, the back moulding by casting that stirs, air dry, low-temperature bake burns till under 1350～1450 ℃ condition, is incubated 2.5～8.0 hours.
The bulk density of present embodiment 6 prepared forsterite light bricks is 0.6～0.8g/cm
3, coefficient of thermal conductivity is 0.20～0.40w/ (m.k), compressive resistance reaches 4.0～11.5MPa.
Embodiment 7
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 90～95wt% and the sintered magnesia of 5～10wt% are mixed, add the water of 25～32wt%, the Ludox of 0.2～0.3wt%, the calgon of 0.05～0.2wt%, the sodium lignin sulfonate of 0.05～0.1wt% and the MgCl of 0.05～0.3wt%
2Mix, add the made foam of blowing agent of 0.8～1.8wt% again, the back moulding by casting that stirs, air dry, low-temperature bake burns till under 1400～1500 ℃ condition, is incubated 8.0～12 hours.
The bulk density of present embodiment 7 prepared forsterite light bricks is 0.7～1.1g/cm
3, coefficient of thermal conductivity is 0.30～0.50w/ (m.k), compressive resistance reaches 3.5～10.6MPa.
Embodiment 8
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 60～75wt% and the electrically molten magnesia of 25～40wt% are mixed, add the water of 35～45wt%, the carboxymethyl cellulose of 0.15～0.35wt%, the sodium lignin sulfonate of 0.1～0.35wt% and the MgCl of 0.2～0.5wt%
2Mix, add the made foam of blowing agent of 0.8～1.5wt% again, the back moulding by casting that stirs, air dry, low-temperature bake burns till under 1400～1500 ℃ condition, is incubated 8.0～12 hours.
The bulk density of present embodiment 8 prepared forsterite light bricks is 1.0～1.2g/cm
3, coefficient of thermal conductivity is 0.40～0.60w/ (m.k), compressive resistance reaches 3.4～10.0MPa.
Embodiment 9
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 75～85wt% and the electrically molten magnesia of 15～25wt% are mixed, add the water of 32～40wt%, the phenolic resins of 0.05～0.25wt%, the calgon of 0.1～0.15wt%, the sodium phosphate trimer of 0.1～0.2wt%, the sodium lignin sulfonate of 0.05～0.15wt% and the MgCl of 0.1～0.5wt%
2Mix, add the made foam of blowing agent of 0.5～1.0wt% again, the back moulding by casting that stirs, air dry, low-temperature bake burns till under 1350～1450 ℃ condition, is incubated 6.0～10 hours.
The bulk density of present embodiment 9 prepared forsterite light bricks is 0.9～1.2g/cm
3, coefficient of thermal conductivity is 0.30～0.60w/ (m.k), compressive resistance reaches 3.2～9.3MPa.
Embodiment 10
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 85～90wt% and the electrically molten magnesia of 10～15wt% are mixed, add the water of 30～40wt%, the carboxymethyl cellulose of 0.1～0.2wt%, the calgon of 0.1～0.3wt% and the NH of 0.05～0.2wt%
4OH mixes, and adds the made foam of blowing agent of 0.8～2wt% again, the back moulding by casting that stirs, and air dry, low-temperature bake burns till under 1450～1550 ℃ condition, is incubated 6.0～10 hours.
The bulk density of present embodiment 10 prepared forsterite light bricks is 0.7～1.0g/cm
3, coefficient of thermal conductivity is 0.20～0.50w/ (m.k), compressive resistance reaches 3.0～8.2MPa.
Embodiment 11
A kind of forsterite light brick and preparation method thereof.Earlier the forsterite raw material of 90～95wt% and the sintered magnesia of 5～10wt% are mixed, add the water of 25～35wt%, the Ludox of 0.2～0.5wt%, the calgon of 0.1～0.4wt% and the NH of 0.1～0.3wt%
4OH mixes, and adds the made foam of blowing agent of 0.6～1.8wt% again, the back moulding by casting that stirs, and air dry, low-temperature bake burns till under 1350～1450 ℃ condition, is incubated 8.0～12 hours.
The bulk density of present embodiment 11 prepared forsterite light bricks is 0.8～1.1g/cm
3, coefficient of thermal conductivity is 0.30～0.50w/ (m.k), compressive resistance reaches 3.2～8.8MPa.
The used primary raw material forsterite of this specific embodiment is the little forsterite mine tailing raw material of present value, and cost is lower; Production technology is also very simple, by by moulding by casting, can be dropped in after burning till in the production of brickwork heat insulating material of industry-by-industries such as iron and steel, pottery and use; Whole process can not produce pernicious gas simultaneously, and environment has also been played must protective effect.The present invention adopts the forsterite light brick of foam method preparation, and the uniform small pore of a large amount of sealings that material internal forms helps improving the effect of heat insulation and the mechanical property of material, the bulk density 0.6～1.2g/cm of prepared forsterite light brick
3, coefficient of thermal conductivity 0.2～0.60w/ (m.k), compressive resistance 3.0～11.5MPa can satisfy the requirement of present thermal technology's industrial production well.
Therefore, this specific embodiment has that cost of production is low, and technology is simple, energy-conserving and environment-protective, and the easy advantage of large-scale production, and the light-weight brick goods of producing also have higher intensity, lower bulk density and coefficient of thermal conductivity.Have society and economic worth widely.
Claims (7)
1. the preparation method of a forsterite light brick, it is characterized in that forsterite raw material and the 5～40wt% magnesia mixing of elder generation with 60～95wt%, adding the water of 25～45wt%, the binding material of 0.05～0.5wt%, the water reducing agent of 0.1～0.5wt% and 0～0.5% mineralizer mixes, add the made foam of blowing agent of 0.5～2wt% again, moulding by casting after stirring, air dry, low-temperature bake, under 1300～1550 ℃ condition, burn till, be incubated 2.5～12 hours.
2. the preparation method of forsterite light brick according to claim 1, the particle diameter that it is characterized in that described forsterite raw material is less than 200 orders.
3. the preparation method of forsterite light brick according to claim 1 is characterized in that described magnesia is a kind of in light calcined magnesia, magnesite clinker, the fused magnesite, and particle diameter is all less than 180 orders.
4. the preparation method of forsterite light brick according to claim 1 is characterized in that described binding material is a kind of in carboxymethyl cellulose, Ludox, the phenolic resins.
5. the preparation method of forsterite light brick according to claim 1 is characterized in that described water reducing agent is more than one in sodium phosphate trimer, calgon, the sodium lignin sulfonate.
6. the preparation method of forsterite light brick according to claim 1 is characterized in that described mineralizer or MgCl
2Or be NH
4OH.
7. according to the prepared forsterite light brick of preparation method of each described forsterite light brick in the claim 1～6.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140034A (en) * | 2011-03-30 | 2011-08-03 | 武汉钢铁(集团)公司 | Magnesium-chromium brick for vacuum chamber of RH furnace and preparation method thereof |
| CN102557597A (en) * | 2012-01-06 | 2012-07-11 | 河南理工大学 | Production process for red mud river sand sintered brick |
| CN102964132A (en) * | 2012-11-07 | 2013-03-13 | 宜昌科博耐火材料有限公司 | Olivine ceramsite sand and preparation method thereof |
| CN103274705A (en) * | 2013-05-06 | 2013-09-04 | 宜昌科博耐火材料有限公司 | Method for preparing high-strength burnt magnesium chrysolite light material through foam method |
| CN103396105A (en) * | 2013-07-19 | 2013-11-20 | 武汉科技大学 | Forsterite light aggregate and preparation method of same |
| CN104140274A (en) * | 2013-05-07 | 2014-11-12 | 湖北红花高温材料有限公司 | Unburned forsterite light material and preparing method thereof |
| CN104250101A (en) * | 2013-06-29 | 2014-12-31 | 西峡宏泰镁橄榄石有限公司 | Method for preparing dense magnesia brick by using waste forsterite mineral powder |
| CN104250102A (en) * | 2013-06-29 | 2014-12-31 | 西峡宏泰镁橄榄石有限公司 | Method for preparing light magnesia brick from waste magnesium and olivine ore powder |
| CN107903051A (en) * | 2017-12-05 | 2018-04-13 | 河南工程学院 | A kind of near-zero thermal expansion coefficient forsterite eucryptite composite ceramic material |
| CN108101571A (en) * | 2017-12-01 | 2018-06-01 | 中山市武汉理工大学先进工程技术研究院 | A kind of light porous domestic ceramics |
| CN108706967A (en) * | 2018-06-08 | 2018-10-26 | 郑州凯翔耐火材料有限公司 | A kind of forsterite brick and its production technology |
| CN110790579A (en) * | 2019-12-04 | 2020-02-14 | 冷水江市鑫达耐火材料制造有限公司 | Chromium-free refractory brick and preparation method thereof |
| CN112250423A (en) * | 2020-10-28 | 2021-01-22 | 河南鑫诚耐火材料股份有限公司 | Anti-seepage high-strength forsterite light heat-insulating brick and preparation method thereof |
| CN113603460A (en) * | 2021-08-27 | 2021-11-05 | 郑州瑞泰耐火科技有限公司 | Micro-pore magnesia-hercynite brick for cement rotary kiln burning zone and preparation method thereof |
| CN114956854A (en) * | 2022-05-30 | 2022-08-30 | 武汉理碳环保科技有限公司 | Modified forsterite-based porous ceramic for carbon neutralization and preparation method thereof |
-
2009
- 2009-11-03 CN CN200910272652XA patent/CN101713235B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140034A (en) * | 2011-03-30 | 2011-08-03 | 武汉钢铁(集团)公司 | Magnesium-chromium brick for vacuum chamber of RH furnace and preparation method thereof |
| CN102557597A (en) * | 2012-01-06 | 2012-07-11 | 河南理工大学 | Production process for red mud river sand sintered brick |
| CN102964132A (en) * | 2012-11-07 | 2013-03-13 | 宜昌科博耐火材料有限公司 | Olivine ceramsite sand and preparation method thereof |
| CN102964132B (en) * | 2012-11-07 | 2014-08-20 | 宜昌科博耐火材料有限公司 | Olivine ceramsite sand and preparation method thereof |
| CN103274705A (en) * | 2013-05-06 | 2013-09-04 | 宜昌科博耐火材料有限公司 | Method for preparing high-strength burnt magnesium chrysolite light material through foam method |
| CN103274705B (en) * | 2013-05-06 | 2014-12-17 | 宜昌科博耐火材料有限公司 | Method for preparing high-strength burnt magnesium chrysolite light material through foam method |
| CN104140274B (en) * | 2013-05-07 | 2015-11-18 | 湖北红花高温材料有限公司 | One does not burn forsterite heat light material and preparation method thereof |
| CN104140274A (en) * | 2013-05-07 | 2014-11-12 | 湖北红花高温材料有限公司 | Unburned forsterite light material and preparing method thereof |
| CN104250101A (en) * | 2013-06-29 | 2014-12-31 | 西峡宏泰镁橄榄石有限公司 | Method for preparing dense magnesia brick by using waste forsterite mineral powder |
| CN104250102A (en) * | 2013-06-29 | 2014-12-31 | 西峡宏泰镁橄榄石有限公司 | Method for preparing light magnesia brick from waste magnesium and olivine ore powder |
| CN103396105A (en) * | 2013-07-19 | 2013-11-20 | 武汉科技大学 | Forsterite light aggregate and preparation method of same |
| CN108101571A (en) * | 2017-12-01 | 2018-06-01 | 中山市武汉理工大学先进工程技术研究院 | A kind of light porous domestic ceramics |
| CN107903051A (en) * | 2017-12-05 | 2018-04-13 | 河南工程学院 | A kind of near-zero thermal expansion coefficient forsterite eucryptite composite ceramic material |
| CN107903051B (en) * | 2017-12-05 | 2021-04-09 | 河南工程学院 | Forsterite-eucryptite composite ceramic material with near-zero expansion coefficient |
| CN108706967A (en) * | 2018-06-08 | 2018-10-26 | 郑州凯翔耐火材料有限公司 | A kind of forsterite brick and its production technology |
| CN110790579A (en) * | 2019-12-04 | 2020-02-14 | 冷水江市鑫达耐火材料制造有限公司 | Chromium-free refractory brick and preparation method thereof |
| CN112250423A (en) * | 2020-10-28 | 2021-01-22 | 河南鑫诚耐火材料股份有限公司 | Anti-seepage high-strength forsterite light heat-insulating brick and preparation method thereof |
| CN113603460A (en) * | 2021-08-27 | 2021-11-05 | 郑州瑞泰耐火科技有限公司 | Micro-pore magnesia-hercynite brick for cement rotary kiln burning zone and preparation method thereof |
| CN114956854A (en) * | 2022-05-30 | 2022-08-30 | 武汉理碳环保科技有限公司 | Modified forsterite-based porous ceramic for carbon neutralization and preparation method thereof |
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