CN103011870A - Forsterite refractory and production method thereof - Google Patents
Forsterite refractory and production method thereof Download PDFInfo
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- CN103011870A CN103011870A CN2013100165705A CN201310016570A CN103011870A CN 103011870 A CN103011870 A CN 103011870A CN 2013100165705 A CN2013100165705 A CN 2013100165705A CN 201310016570 A CN201310016570 A CN 201310016570A CN 103011870 A CN103011870 A CN 103011870A
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Abstract
The invention belongs to the technical field of refractory materials, and particularly relates to a forsterite refractory and a production method thereof. According to the technical scheme, the production method comprises the following steps of: firstly mixing 48-65 wt% of magnesium raw material fine powder, 33-50 wt% of silicon raw material fine powder and 0.2-2 wt% of additives to obtain a mixture; adding a binder of 1-10 wt% of the mixture into the mixture and then putting in a ball mill for ball milling for 1-3 hours to obtain ball milling material; then adding water of 3-10 wt% of the ball milling material into the ball milling material to mix for 10-30 minutes and pressing into blanks, and drying the blanks; and finally calcining the dried blanks under the condition of 1450-1650 DEG C and carrying out heat preservation for 1-3 hours to obtain forsterite refractory. The forsterite refractory and the production method thereof have the characteristics of wide source, low production cost and easiness in sintering, and the forsterite refractory produced has large volume density, high porosity and stable high-temperature performance.
Description
Technical field
The invention belongs to technical field of refractory materials.Be specifically related to a kind of forsterite refractory raw material and preparation method thereof.
Background technology
1890 ℃ of forsterite crystalline melting points are the nesosilicate structure, have that fusing point is high, thermal conductivity is low, stable chemical nature, anti-metal melt and a high good characteristic of scouring.But not only foreign matter content is higher and loss on ignition is large for natural boltonite, even still can not satisfy the requirement of high-grade refractory product through the high-temperature calcination processing.The Fe that contains in the natural boltonite
2O
3, SiO
2And Al
2O
3Deng impurity, in mineral or under the high temperature, will form eutectic, such as fayalite, monticellite, diopside, lime feldspar, trichroite etc., and then will reduce refractoriness and the refractoriness under load of goods; Because the existence of natural boltonite impurity component causes multiple ore deposit phase and deposits, cause the unstable of character under the refractory product high temperature, had a strong impact on the popularization of refractory materials production and refractory products.
The method that some relevant forsterite preparations are also arranged in the prior art, but all there is certain deficiency: as take serpentine tailing as main raw material (Wan Jiandong, the Donghai County serpentine tailing is converted into the research of forsterite. nonmetalliferous ore, 1997,3:61-63), through fine grinding, moulding be fired into fine and close forsterite raw material, but because Fe in the raw material
2O
3, the foreign matter content such as CaO is higher, will cause prepared forsterite high temperature properties unstable, limited its application in refractory product; For another " with the method for magnesite tailings and the synthetic high purity forsterite with mine of talcum mine tailing " (201110159148) patented technology, take magnesite tailings and talcum mine tailing as body material, add additive and wedding agent, through batching, batch mixing, moulding, oven dry, high temperature is synthetic and the operation such as broken makes use temperature and is higher than 1600 ℃, volume density greater than 2.55g/cm
3The high purity forsterite with mine refractory raw material, but contain a certain amount of ferric oxide in the raw material that this technology adopts and the product, will affect final product result of use at high temperature, limited by the preparation method, this technology can't make highdensity forsterite, as under the prerequisite of guaranteeing the high-temperature behavior excellence, volume density is greater than 2.9 g/cm
3Fine and close forsterite; " produce the method for forsterite refractory with iron tailings " for another example (ZL200610047981) patented technology, in the compound of iron tailings and light-burning magnesium powder, add the peridotites grog, can burn lost article, wedding agent and water, through stirring, moulding, drying, be incubated and burn till, make forsterite refractory, but the iron that high level is arranged in the raw material that this technology adopts, high-temperature behavior that will the remarkably influenced product, so can't with hot environment that etching medium, reducing atmosphere, alkaline dust etc. contact under life-time service; " lightweight forsterite brick and manufacture method thereof " (200610134805) patented technology and for example with mixing such as olivine sand, magnesia, coke and charcoals, drying, burns till, cuts, grinds to such an extent that use temperature reaches 1540 ℃ lightweight forsterite brick.
In a word, the deficiency that exists about the preparation method of forsterite material or forsterite brick of the prior art has: or contain the impurity such as iron and calcium in the raw material, cause the unstable of product high temperature properties; Or the product of preparation is light material.Thereby all can not satisfy the hot environment that contacts with etching medium, reducing atmosphere, alkaline dust etc. to the requirement of volume density, void content and the high temperature properties of refractory products.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, purpose provides that a kind of raw material sources are extensive, production cost is low and is easy to the preparation method of the forsterite refractory raw material of sintering, has that volume density is large, void content is low and has stable high-temperature performance with the prepared forsterite refractory raw material of the method.
For achieving the above object, technical scheme of the present invention is: first magnesia raw material's fine powder of 48 ~ 65wt%, the siliceous raw material fine powder of 33 ~ 50wt% and the additive of 0.2 ~ 2wt% are mixed, make compound; Add again the wedding agent of described compound 1 ~ 10wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then in the ball milling material, add the water that accounts for ball milling material 3 ~ 10wt%, stirred 10 ~ 30 minutes, be pressed into base substrate, drying; At last dried base substrate is calcined under 1450 ~ 1650 ℃ of conditions, be incubated 1 ~ 3 hour, make the forsterite refractory raw material.
Described magnesia raw material fine powder is a kind of in electrosmelted magnesite clinker fine powder, magnesite clinker fine powder and the light calcined magnesia, the Al in the described magnesia raw material fine powder
2O
3, CaO and Fe
2O
3Foreign matter content all less than 3wt%, particle diameter is all less than 0.045 mm.
Described siliceous raw material fine powder is a kind of in natural powdery quartz fine powder, nano silicon, quartz sand fine powder and the iron alloy dust-removing powder, CaO and Fe in the described siliceous raw material fine powder
2O
3Foreign matter content all less than 0.5wt%, particle diameter is all less than 0.045 mm.
Described additive is one or both in silicon carbide and the silicon nitride, the Fe in the described additive
2O
3Content is less than 1wt%, and particle diameter is less than 0.045mm.
Described wedding agent is a kind of in sucrose, semi-lactosi, glucose and the industrial dextrine powder.
The pressure of described compacting is 45 ~ 55 MPa.Since adopt technique scheme, magnesia raw material of the present invention fine powder and siliceous raw material fine powder wide material sources, production cost is low, and close contact between the various feed particles is easy to sintering, and phase is conducive to improve the physical and chemical performance of product in conjunction with good.
With the volume density of the forsterite refractory raw material of the method preparation greater than 2.9 g/cm
3, void content is less than 10 %, and high temperature properties is stable, is particularly suitable for the preparation that the high temperature equipment such as non-ferrous metal and smelting iron and steel, cement and glass are used refractory materials.
Therefore, the present invention has wide material sources, production cost is low and be easy to the characteristics of sintering, and the long-pending density of prepared forsterite refractory raw material is large, void content the and having stable high-temperature performance.
Embodiment
The present invention will be further described below in conjunction with embodiment, is not the restriction to its protection domain.
For avoiding repetition, the first raw material unification with this embodiment is described below, and repeats no more among each embodiment:
Al in described electrosmelted magnesite clinker fine powder, magnesite clinker fine powder and the light calcined magnesia
2O
3, CaO and Fe
2O
3Foreign matter content all less than 3wt%, particle diameter is all less than 0.045 mm.
CaO and Fe in described natural powdery quartz fine powder, nano silicon, quartz sand fine powder and the iron alloy dust-removing powder
2O
3Foreign matter content all less than 0.5 wt%, particle diameter is all less than 0.045 mm.
A kind of Fe in described silicon carbide and the silicon nitride
2O
3Content is all less than 1wt%, and particle diameter is all less than 0.045mm; Fe in the mixture of described silicon carbide and silicon nitride
2O
3Content is less than 1wt%, and particle diameter is less than 0.045mm.
The pressure of described compacting is 45 ~ 55MPa.
Embodiment 1
A kind of forsterite refractory raw material and preparation method thereof.First the light calcined magnesia of 60 ~ 65wt%, the natural powdery quartz fine powder of 33 ~ 38wt% and the silicon nitride of 1.5 ~ 2wt% are mixed, make compound; Add again the industrial dextrin of described compound 1 ~ 3wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 3 ~ 6wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1450 ~ 1550 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material that the present embodiment is prepared, after testing: volume density is greater than 2.95g/cm
3, void content is less than 9%.
Embodiment 2
A kind of forsterite refractory raw material and preparation method thereof.First the light calcined magnesia of 48 ~ 53wt%, the iron alloy dust-removing powder of 45 ~ 50wt% and the silicon nitride of 1.5 ~ 2wt% are mixed, make compound; Add again the industrial dextrin of described compound 6 ~ 10wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 7 ~ 10wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1550 ~ 1650 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material of the present embodiment preparation, after testing: volume density is greater than 2.92g/cm
3, void content is less than 10%.
Embodiment 3
A kind of forsterite refractory raw material and preparation method thereof.First the light calcined magnesia of 53 ~ 61wt%, the iron alloy dust-removing powder of 38 ~ 46wt% and the silicon nitride of 0.2 ~ 1wt% are mixed, make compound; Add again the industrial dextrin of described compound 3 ~ 6wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 5 ~ 8wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1500 ~ 1600 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material that the present embodiment is prepared, after testing: volume density is greater than 2.9 g/cm
3, void content is less than 9%.
Embodiment 4
A kind of forsterite refractory raw material and preparation method thereof.First the magnesite clinker fine powder of 50 ~ 56wt%, the nano silicon of 43 ~ 49wt% and the silicon nitride of 1 ~ 1.5wt% are mixed, make compound; Add again the glucose of described compound 7 ~ 10wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 8 ~ 10wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1500 ~ 1600 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material of the present embodiment preparation, after testing: volume density is greater than 2.97g/cm
3, void content is less than 9.5%.
Embodiment 5
A kind of forsterite refractory raw material and preparation method thereof.First the magnesite clinker fine powder of 60 ~ 65wt%, the nano silicon of 33 ~ 38wt% and the silicon carbide of 1.5 ~ 2wt% are mixed, make compound; Add again the glucose of described compound 5 ~ 8wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 3 ~ 5wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1450 ~ 1550 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material of the present embodiment preparation, after testing: volume density is greater than 3.0 g/cm
3, void content is less than 9 %.
Embodiment 6
A kind of forsterite refractory raw material and preparation method thereof.First the magnesite clinker fine powder of 48 ~ 53wt%, natural powdery quartz fine powder and the silicon carbide of 0.6 ~ 0.8wt%, the silicon nitride of 0.9 ~ 1.2 wt% of 45 ~ 50wt% are mixed, make compound; Add again the glucose of described compound 1 ~ 5wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 5 ~ 8wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying, at last with dried base substrate 1500 ~
Calcine under 1600 ℃ of conditions, be incubated 1 ~ 3 hour, make the forsterite refractory raw material.
The forsterite refractory raw material of the present embodiment preparation, after testing: volume density is greater than 3.0 g/cm
3, void content is less than 8.5 %.
Embodiment 7
A kind of forsterite refractory raw material and preparation method thereof.First the magnesite clinker fine powder of 53 ~ 61wt%, the nano silicon of 38 ~ 46wt% and the silicon carbide of 0.2 ~ 1wt% are mixed, make compound; Add again the semi-lactosi of described compound 1 ~ 5wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 3 ~ 6wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1450 ~ 1550 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material that the present embodiment is prepared, after testing: volume density is greater than 2.95g/cm
3, void content is less than 9%.
Embodiment 8
A kind of forsterite refractory raw material and preparation method thereof.First the electrosmelted magnesite clinker fine powder of 48 ~ 53wt%, the quartz sand fine powder of 45 ~ 50wt% and the silicon carbide of 1.5 ~ 2wt% are mixed, make compound; Add again the semi-lactosi of described compound 5 ~ 10wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 5 ~ 8wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1550 ~ 1650 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material that the present embodiment is prepared, after testing: volume density is greater than 2.9g/cm
3, void content is less than 10%.
Embodiment 9
A kind of forsterite refractory raw material and preparation method thereof.First the electrosmelted magnesite clinker fine powder of 53 ~ 61wt%, the quartz sand fine powder of 38 ~ 46wt% and the silicon nitride of 0.2 ~ 1wt% are mixed, make compound; Add again the sucrose of described compound 1 ~ 5wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 3 ~ 6wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1450 ~ 1550 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material that the present embodiment is prepared, after testing: volume density is greater than 2.8 g/cm
3, void content is less than 9%.
Embodiment 10
A kind of forsterite refractory raw material and preparation method thereof.First the electrosmelted magnesite clinker fine powder of 60 ~ 65wt%, quartz sand fine powder and the silicon nitride of 0.5 ~ 1wt%, the silicon carbide of 0.5 ~ 1 wt% of 33 ~ 38wt% are mixed, make compound; Add again the sucrose of described compound 5 ~ 10wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then add the water that accounts for ball milling material 8 ~ 10wt% in the ball milling material, stirred 10 ~ 30 minutes, be pressed into base substrate, drying is calcined dried base substrate at last under 1550 ~ 1650 ℃ of conditions, be incubated 1 ~ 3 hour, makes the forsterite refractory raw material.
The forsterite refractory raw material that the present embodiment is prepared, after testing: volume density is greater than 2.92g/cm
3, void content is less than 9%.
This embodiment compared with prior art has following positively effect:
1, raw material sources are extensive, and production cost is low;
2, the material particles close contact is easy to sintering, and phase is conducive to improve the physical and chemical performance of product in conjunction with good.
Therefore, with the volume density of the forsterite refractory raw material of the method preparation greater than 2.9 g/cm
3, void content is less than 10 %, and high temperature properties is stable, is particularly suitable for the preparation that the high temperature equipment such as non-ferrous metal and smelting iron and steel, cement and glass are used refractory materials.
Claims (7)
1. the preparation method of a forsterite refractory raw material is characterized in that first magnesia raw material's fine powder of 48 ~ 65wt%, the siliceous raw material fine powder of 33 ~ 50wt% and the additive of 0.2 ~ 2wt% being mixed, and makes compound; Add again the wedding agent of described compound 1 ~ 10wt%, placed the ball mill ball milling 1 ~ 3 hour, make the ball milling material; Then in the ball milling material, add the water that accounts for ball milling material 3 ~ 10wt%, stirred 10 ~ 30 minutes, be pressed into base substrate, drying; At last dried base substrate is calcined under 1450 ~ 1650 ℃ of conditions, be incubated 1 ~ 3 hour, make the forsterite refractory raw material.
2. the preparation method of forsterite refractory raw material according to claim 1 is characterized in that described magnesia raw material fine powder is a kind of in electrosmelted magnesite clinker fine powder, magnesite clinker fine powder and the light calcined magnesia, the Al in the described magnesia raw material fine powder
2O
3, CaO and Fe
2O
3Foreign matter content all less than 3wt%, particle diameter is all less than 0.045 mm.
3. the preparation method of forsterite refractory raw material according to claim 1, it is characterized in that described siliceous raw material fine powder is a kind of in natural powdery quartz fine powder, nano silicon, quartz sand fine powder and the iron alloy dust-removing powder, CaO and Fe in the described siliceous raw material fine powder
2O
3Foreign matter content all less than 0.5 wt%, particle diameter is all less than 0.045 mm.
4. the preparation method of forsterite refractory raw material according to claim 1 is characterized in that described additive is one or both in silicon carbide and the silicon nitride, the Fe in the described additive
2O
3Content is less than 1wt%, and particle diameter is less than 0.045mm.
5. the preparation method of forsterite refractory raw material according to claim 1 is characterized in that described wedding agent is a kind of in sucrose, semi-lactosi, glucose and the industrial dextrine powder.
6. the preparation method of forsterite refractory raw material according to claim 1, the pressure that it is characterized in that described compacting is 45 ~ 55 MPa.
7. the prepared forsterite refractory raw material of preparation method of each described forsterite refractory raw material according to claim 1 ~ 6.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106187242A (en) * | 2016-07-22 | 2016-12-07 | 武汉科技大学 | A kind of high-strength light forsterite fire resistant materials and preparation method thereof |
| CN106316430A (en) * | 2016-08-22 | 2017-01-11 | 大石桥市中建镁砖有限公司 | Synthetized forsterite castable and preparation method thereof |
| CN106431435A (en) * | 2016-09-22 | 2017-02-22 | 郑州大学 | Porous periclase-forsterite multiphase material and preparation method thereof |
| CN107954729A (en) * | 2017-11-22 | 2018-04-24 | 海城市中兴镁质合成材料有限公司 | One kind synthesis reheating magnesia and preparation method thereof |
| CN110713380A (en) * | 2019-11-28 | 2020-01-21 | 王衍森 | Preparation method of high-purity compact forsterite |
| CN112321308A (en) * | 2020-11-25 | 2021-02-05 | 辽宁科技大学 | Preparation method of forsterite low-iron refractory homogeneous material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106187242A (en) * | 2016-07-22 | 2016-12-07 | 武汉科技大学 | A kind of high-strength light forsterite fire resistant materials and preparation method thereof |
| CN106187242B (en) * | 2016-07-22 | 2018-12-14 | 武汉科技大学 | A kind of high-strength light forsterite fire resistant materials and preparation method thereof |
| CN106316430A (en) * | 2016-08-22 | 2017-01-11 | 大石桥市中建镁砖有限公司 | Synthetized forsterite castable and preparation method thereof |
| CN106431435A (en) * | 2016-09-22 | 2017-02-22 | 郑州大学 | Porous periclase-forsterite multiphase material and preparation method thereof |
| CN107954729A (en) * | 2017-11-22 | 2018-04-24 | 海城市中兴镁质合成材料有限公司 | One kind synthesis reheating magnesia and preparation method thereof |
| CN107954729B (en) * | 2017-11-22 | 2021-08-03 | 辽宁利尔镁质合成材料股份有限公司 | Synthetic dead-burned magnesia and preparation method thereof |
| CN110713380A (en) * | 2019-11-28 | 2020-01-21 | 王衍森 | Preparation method of high-purity compact forsterite |
| CN112321308A (en) * | 2020-11-25 | 2021-02-05 | 辽宁科技大学 | Preparation method of forsterite low-iron refractory homogeneous material |
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