CN101497530A - High strength forsterite heat insulating material and preparation method thereof - Google Patents
High strength forsterite heat insulating material and preparation method thereof Download PDFInfo
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- CN101497530A CN101497530A CNA2009100608764A CN200910060876A CN101497530A CN 101497530 A CN101497530 A CN 101497530A CN A2009100608764 A CNA2009100608764 A CN A2009100608764A CN 200910060876 A CN200910060876 A CN 200910060876A CN 101497530 A CN101497530 A CN 101497530A
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Abstract
The invention relates to a high-strength forsterite insulating material and a preparation method thereof. The invention adopts a technical proposal that the method comprises the following steps: firstly mixing 20 to 70 percent of carbonate powder and 30 to 80 percent of crude forsterite powder by weight, adding 3 to 10 percent of bonding agent by weight of the mixture into the mixture, stirring the mixture for 5 to 25 minutes, and pressing and molding the mixture; and then drying the mixture for 12 to 36 hours at a temperature of between 60 and 110 DEG C or naturally drying the mixture for 24 to 48 hours indoors, sintering the dried mixture for 2 to 6 hours at a temperature of between 800 and 1,400 DEG C in the air, naturally cooling the sintered mixture and soaking the cooled mixture for 24 to 48 hours by water, and drying the soaked mixture for 12 to 36 hours at a temperature of between 60 and 110 DEG C or naturally drying the soaked mixture for 24 to 48 hours indoors to obtain the high-strength forsterite insulating material. The preparation method has the characteristics of rich raw material resources, low production cost and easy industrialized production. The high-strength forsterite insulating material prepared by the method not only has good performance, but also has high using temperature and long service life, can be widely applied to industrial thermal equipment, and can save energy and reduce consumption.
Description
Technical field
The invention belongs to composite fire lagging material technical field.Relate in particular to a kind of high strength forsterite heat insulating material and preparation method thereof.
Background technology
The existing particularly light heat insulation material of non-ferrous metal and smelting iron and steel, cement and glass manufacturing apparatus of hot industry Thermal Equipment that is used for, as alumina hollow ball material, lightweight high aluminium material, light forsterite lagging material, soft clay, diatomite material etc., calorific loss in the production process of these equipment is bigger, thereby it is also more serious to the thermal pollution of surrounding environment, not only waste energy, and influence production operation environment and condition.Therefore, research and development has that intensity height, volume density are low, resistance to elevated temperatures and thermal stability are good is used for industrial thermal equipment particularly non-ferrous metal and smelting iron and steel, cement and glass manufacturing apparatus is the problem that the technician pays close attention to the novel light lagging material.
The forsterite material has high-melting-point, high strength, high chemical stability, low thermal conductivity.At present, the method of producing forsterite heat light material has: except traditional foaming, organism (comprises wood chip, coke etc.) burning the mistake hole forming method prepares beyond the forsterite heat light material, other similar study limitations are in adopting magnesium oxychloride, silica powder and fine silica powder be raw material foaming (Li Nan. a kind of periclasite-peridotites light thermal insulation fire-resistant material and production method thereof, ZL200410013258.1) and decomposition in situ method (Hu Limin, Li Nan. decomposition in situ prepares high-strength light forsterite material. refractory materials .2005,39[4]: 283-285), owing to the forsterite heat insulating material of method for preparing, directly do not utilize the forsterite resource of China's abundant.Thereby cost is higher, and industrialization degree is not high, and its performance also is affected.
Summary of the invention
Task of the present invention provides that a kind of raw material resources are abundant, production cost is low and is easy to the preparation method of the high strength forsterite heat insulating material of suitability for industrialized production.High strength forsterite heat insulating material excellent property, long service life with this method preparation.
For realizing above-mentioned task, the technical solution adopted in the present invention is: earlier the carbonate powder of 20～70wt% and the forsterite original ore powder of 30～80wt% are mixed, add the wedding agent of said mixture 3～10wt%, stirred 5～25 minutes, compression moulding, under 60～110 ℃ of conditions dry 12～36 hours or indoor seasoning 24～48 hours; Under 800～1400 ℃ * 2～6 hours conditions, burn till in the air then, be soaked in water under 60～110 ℃ of conditions dry 12～36 hours or made high strength forsterite heat insulating material in 24～48 hours again behind the naturally cooling 24～48 hours in indoor seasoning.
Wherein: carbonate powder is a kind of in yellow soda ash powder, salt of wormwood powder, the magnesiumcarbonate powder, and its carbonate powder content 〉=80wt%, the particle diameter of carbonate are 0.1～0mm; Content of magnesia 〉=the 35wt% of forsterite original ore powder, particle diameter are 0.1～0mm; Wedding agent is more than one in calcium lignin sulphonate, sodium lignosulfonate, lignosulfite, industrial dextrine powder, the polyvinyl alcohol.
Owing to adopt technique scheme, carbonate that the present invention is used and forsterite raw ore wide material sources, prepared high strength forsterite heat insulating material is to be generated by carbonate and the reaction of forsterite raw ore at material internal, sinter, thing combines well, helps improving the performance of material.The carbon dioxide original position that produces during carbonate decomposition generates small pore, and the volume density of material is low, and thermal conductivity is low, the good heat insulating of material, the intensity height of while material, long service life.
Therefore, this embodiment has the advantages that raw material resources are abundant, production cost is low and be easy to suitability for industrialized production.Prepared high strength forsterite heat insulating material volume density is at 0.7～1.8 gram per centimeter
3, excellent property not only, and can increase the service life.Prepared high strength forsterite heat insulating material excellent property, use temperature height, long service life, be suitable for temperature at the high temperature equipment such as non-ferrous metal and smelting iron and steel, cement and glass production particularly of the various industrial thermal equipment below 1300 ℃, can reduce the calorific loss in the production process, alleviate the thermal pollution of equipment, realize energy-saving and cost-reducing surrounding environment.
Embodiment
The present invention will be further described below in conjunction with embodiment, is not limiting the scope of the invention.
For avoiding being repeated in this description, the physical and chemical index unification of raw material that following examples adopt is described below: carbonate powder is a kind of in yellow soda ash powder, salt of wormwood powder, the magnesiumcarbonate powder, and its carbonate powder content 〉=80wt%, particle diameter are 0.1～0mm; Content of magnesia 〉=the 35wt% of forsterite original ore powder, particle diameter are 0.1～0mm.
Embodiment 1
A kind of preparation method of high strength forsterite heat insulating material, earlier the yellow soda ash powder of 20～25wt% and the forsterite original ore powder of 75～80wt% are mixed, the calcium lignin sulphonate that adds said mixture 3～7wt% is a wedding agent, wedding agent is used further to batching after dissolving into earlier the aqueous solution, stirred 10～20 minutes, compression moulding, drying is 12～24 hours under 60～110 ℃ of conditions; Under 800～900 ℃ * 5～6 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 24～36 hours, under 60～110 ℃ of conditions, made high strength forsterite heat insulating material again in dry 12～24 hours.
Embodiment 2
A kind of preparation method of high strength forsterite heat insulating material, except that wedding agent was sodium lignosulfonate, all the other were with embodiment 1.
Embodiment 3
A kind of preparation method of high strength forsterite heat insulating material, earlier the salt of wormwood powder of 25～30wt% and the forsterite original ore powder of 70～75wt% are mixed, the industrial dextrine powder that adds said mixture 7～10wt% is a wedding agent, wedding agent is used further to batching after dissolving into earlier the aqueous solution, stirred 15～25 minutes, compression moulding, drying is 24～36 hours under 60～110 ℃ of conditions; Under 900～1000 ℃ * 4～5 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Drying made high strength forsterite heat insulating material in 24～36 hours under 60～110 ℃ of conditions again.
Embodiment 4
A kind of preparation method of high strength forsterite heat insulating material, except that wedding agent was polyvinyl alcohol, all the other were with embodiment 3.
Embodiment 5
A kind of preparation method of high strength forsterite heat insulating material, earlier the magnesiumcarbonate powder of 30～35wt% and the forsterite original ore powder of 65～70wt% are mixed, the lignosulfite that adds said mixture 3～6wt% is a wedding agent, wedding agent is used further to batching after dissolving into earlier the aqueous solution, stirred 5～15 minutes, compression moulding was indoor seasoning 24～48 hours; Under 1000～1100 ℃ * 3～4 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Made high strength forsterite heat insulating material in 24～48 hours in indoor seasoning again.
Embodiment 6
A kind of preparation method of high strength forsterite heat insulating material, except that wedding agent was calcium lignin sulphonate and sodium lignosulfonate, all the other were with embodiment 5.
Embodiment 7
A kind of preparation method of high strength forsterite heat insulating material, earlier the yellow soda ash powder of 35～40wt% and the forsterite original ore powder of 60～65wt% are mixed, add the wedding agent of said mixture 5～7wt%, stirred 10～20 minutes, compression moulding was indoor seasoning 24～48 hours; Under 1100～1200 ℃ * 2～3 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Made high strength forsterite heat insulating material in 24～48 hours in indoor seasoning again.
Wherein: wedding agent is industrial dextrine powder and lignosulfite, dissolves into earlier to be used further to batching behind the aqueous solution.
Embodiment 8
A kind of preparation method of high strength forsterite heat insulating material, except that wedding agent was industrial dextrine powder and polyvinyl alcohol, all the other were with embodiment 7.
Embodiment 9
A kind of preparation method of high strength forsterite heat insulating material, earlier the salt of wormwood powder of 40～45wt% and the forsterite original ore powder of 55～60wt% are mixed, add the wedding agent of said mixture 5～8wt%, stirred 15～25 minutes, compression moulding, drying is 24～36 hours under 60～110 ℃ of conditions; Under 1200～1300 ℃ * 2～3 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Drying made high strength forsterite heat insulating material in 24～36 hours under 60～110 ℃ of conditions again.
Wherein: wedding agent is calcium lignin sulphonate, sodium lignosulfonate and industrial dextrine powder, dissolves into earlier to be used further to batching behind the aqueous solution.
Embodiment 10
A kind of preparation method of high strength forsterite heat insulating material, except that wedding agent was calcium lignin sulphonate, sodium lignosulfonate, industrial dextrine powder and polyvinyl alcohol, all the other were with embodiment 9.
Embodiment 11
A kind of preparation method of high strength forsterite heat insulating material, earlier the magnesiumcarbonate powder of 45～50wt% and the forsterite original ore powder of 50～55wt% are mixed, the lignosulfite that adds said mixture 3～6wt% is a wedding agent, wedding agent is used further to batching after dissolving into earlier the aqueous solution, stirred 5～15 minutes, compression moulding was indoor seasoning 24～48 hours; Under 1300～1400 ℃ * 2～3 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Made high strength forsterite heat insulating material in 24～48 hours in indoor seasoning again.
Embodiment 12
A kind of preparation method of high strength forsterite heat insulating material, earlier the magnesiumcarbonate powder of 50～55wt% and the forsterite original ore powder of 45～50wt% are mixed, the calcium lignin sulphonate and the sodium lignosulfonate that add said mixture 3～6wt% are wedding agent, wedding agent is used further to batching after dissolving into earlier the aqueous solution, stirred 5～15 minutes, compression moulding was indoor seasoning 24～48 hours; Under 1200～1300 ℃ * 3～4 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Made high strength forsterite heat insulating material in 24～48 hours in indoor seasoning again.
Embodiment 13
A kind of preparation method of high strength forsterite heat insulating material, earlier the salt of wormwood powder of 55～60wt% and the forsterite original ore powder of 40～45wt% are mixed, add the wedding agent of said mixture 3～5wt%, stirred compression moulding under 60～110 ℃ of conditions dry 24～36 hours 15～25 minutes; Under 1200～1300 ℃ * 2～3 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Drying made high strength forsterite heat insulating material in 24～36 hours under 60～110 ℃ of conditions again.
Wherein: wedding agent is calcium lignin sulphonate, sodium lignosulfonate, lignosulfite and industrial dextrine powder, dissolves into earlier to be used further to batching behind the aqueous solution.
Embodiment 14
A kind of preparation method of high strength forsterite heat insulating material, earlier the salt of wormwood powder of 60～65wt% and the forsterite original ore powder of 35～40wt% are mixed, add the wedding agent of said mixture 3～5wt%, stirred 15～25 minutes, compression moulding, drying is 24～36 hours under 60～110 ℃ of conditions; Under 1200～1300 ℃ * 2～3 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Drying made high strength forsterite heat insulating material in 24～36 hours under 60～110 ℃ of conditions again.
Wherein: wedding agent is calcium lignin sulphonate, sodium lignosulfonate, lignosulfite, polyvinyl alcohol and industrial dextrine powder, dissolves into earlier to be used further to batching behind the aqueous solution.
Embodiment 15
A kind of preparation method of high strength forsterite heat insulating material, earlier the salt of wormwood powder of 65～70wt% and the forsterite original ore powder of 30～35wt% are mixed, add the wedding agent of said mixture 3～5wt%, stirred 15～25 minutes, compression moulding, drying is 24～36 hours under 60～110 ℃ of conditions; Under 1200～1300 ℃ * 2～3 hours conditions, burn till in the air then, be soaked in water behind the naturally cooling 36～48 hours; Drying made high strength forsterite heat insulating material in 24～36 hours under 60～110 ℃ of conditions again.
Wherein: wedding agent is sodium lignosulfonate and industrial dextrine powder, dissolves into to be used further to batching behind the aqueous solution.
Carbonate that this embodiment is used and forsterite raw ore wide material sources, prepared high strength forsterite heat insulating material is to be generated by carbonate and the reaction of forsterite raw ore at material internal, sinter, thing combines well, helps improving the performance of material.The carbon dioxide original position that produces during carbonate decomposition generates small pore, and the volume density of material is low, and thermal conductivity is low, the good heat insulating of material, the intensity height of while material, long service life.
Therefore, this embodiment has the advantages that raw material resources are abundant, production cost is low and be easy to suitability for industrialized production.Prepared high strength forsterite heat insulating material volume density is at 0.7～1.8 gram per centimeter
3, excellent property not only, and can increase the service life.Prepared high strength forsterite heat insulating material excellent property, use temperature height, long service life, be suitable for temperature at the high temperature equipment such as non-ferrous metal and smelting iron and steel, cement and glass production particularly of the various industrial thermal equipment below 1300 ℃, can reduce the calorific loss in the production process, alleviate the thermal pollution of equipment, realize energy-saving and cost-reducing surrounding environment.
Claims (5)
1, a kind of preparation method of high strength forsterite heat insulating material, it is characterized in that earlier the carbonate powder of 20～70wt% and the forsterite original ore powder of 30～80wt% being mixed, add the wedding agent of said mixture 3～10wt%, stirred 5～25 minutes, compression moulding, under 60～110 ℃ of conditions dry 12～36 hours or indoor seasoning 24～48 hours; Under 800～1400 ℃ * 2～6 hours conditions, burn till in the air then, be soaked in water under 60～110 ℃ of conditions dry 12～36 hours or made high strength forsterite heat insulating material in 24～48 hours again behind the naturally cooling 24～48 hours in indoor seasoning.
2, the preparation method of high strength forsterite heat insulating material according to claim 1, it is characterized in that described carbonate powder is a kind of in yellow soda ash powder, salt of wormwood powder, the magnesiumcarbonate powder, its carbonate powder content 〉=80wt%, the particle diameter of carbonate are 0.1～0mm.
3, the preparation method of high strength forsterite heat insulating material according to claim 1 is characterized in that the content of magnesia 〉=35wt% of described forsterite original ore powder, and particle diameter is 0.1～0mm.
4, the preparation method of high strength forsterite heat insulating material according to claim 1 is characterized in that described wedding agent is more than one in calcium lignin sulphonate, sodium lignosulfonate, lignosulfite, industrial dextrine powder, the polyvinyl alcohol.
5, according to the prepared high strength forsterite heat insulating material of preparation method of each described high strength forsterite heat insulating material in the claim 1～4.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104445228A (en) * | 2014-10-21 | 2015-03-25 | 中国建筑材料科学研究总院 | Hollow spherical type serpentine superfine powder and preparation method thereof |
| CN104944975A (en) * | 2015-05-26 | 2015-09-30 | 柳州市亿廷贸易有限责任公司 | Preparation method of forsterite refractory brick |
| CN105272275A (en) * | 2015-09-25 | 2016-01-27 | 武汉科技大学 | Nickel and iron slag-based forsterite lightweight heat insulation brick and making method thereof |
| CN106278300A (en) * | 2016-07-22 | 2017-01-04 | 武汉科技大学 | A kind of high temperature kiln forsterite fire resistant materials and preparation method thereof |
| CN107686361A (en) * | 2017-08-24 | 2018-02-13 | 浙江科屹耐火材料有限公司 | A kind of forsterite lightweight refracrory and preparation method thereof |
| CN114057504A (en) * | 2021-11-26 | 2022-02-18 | 武汉科技大学 | Low-thermal-conductivity calcium zirconate material and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5362690A (en) * | 1992-12-16 | 1994-11-08 | Ceram Sna Inc. | Refractory castable composition and process for its manufacture |
| EP1178023A1 (en) * | 2000-08-04 | 2002-02-06 | Alcoa Chemie GmbH | High density refractory material containing calcium hexaluminate |
| CN1323985C (en) * | 2004-06-02 | 2007-07-04 | 武汉科技大学 | Periclase-olivine light thermal-insulated fireproof materials and method for preparing same |
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2009
- 2009-02-27 CN CN2009100608764A patent/CN101497530B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104445228A (en) * | 2014-10-21 | 2015-03-25 | 中国建筑材料科学研究总院 | Hollow spherical type serpentine superfine powder and preparation method thereof |
| CN104944975A (en) * | 2015-05-26 | 2015-09-30 | 柳州市亿廷贸易有限责任公司 | Preparation method of forsterite refractory brick |
| CN105272275A (en) * | 2015-09-25 | 2016-01-27 | 武汉科技大学 | Nickel and iron slag-based forsterite lightweight heat insulation brick and making method thereof |
| CN106278300A (en) * | 2016-07-22 | 2017-01-04 | 武汉科技大学 | A kind of high temperature kiln forsterite fire resistant materials and preparation method thereof |
| CN107686361A (en) * | 2017-08-24 | 2018-02-13 | 浙江科屹耐火材料有限公司 | A kind of forsterite lightweight refracrory and preparation method thereof |
| CN114057504A (en) * | 2021-11-26 | 2022-02-18 | 武汉科技大学 | Low-thermal-conductivity calcium zirconate material and preparation method thereof |
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| CN101497530B (en) | 2012-07-04 |
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