CN101066872A - Composite Sialon ceramic material and its prepn process - Google Patents
Composite Sialon ceramic material and its prepn process Download PDFInfo
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Abstract
The present invention relates to one kind of composite Sialon ceramic material and its preparation process. The technological scheme is that the materials including alumina ash 25-96 wt%, fine magnesia powder 0.5-55 wt%, fine SiO2 powder 0.5-60 wt%, fine aluminum powder 0-10 wt% and fine silicon powder 0-43 wt%, are prepared into the composite Sialon ceramic material through mixing, forming into biscuit, sintering in nitrogen atmosphere inside a reaction furnace first at 1000-1100 deg.c for 0.5-5 hr, then at 1300-1350 deg.c reached in the rate of 2-5 deg.c/min for 1-6 hr and finally at 1360-1500 deg.c reached in the rate of 2-5 deg.c/min for 2-10 hr, and naturally cooling to room temperature in nitrogen atmosphere. The present invention has waste alumina ash as main material, environment friendship and low production cost.
Description
Technical field
The invention belongs to composite ceramics and preparation method thereof.Be specifically related to a kind of Sialon composite ceramic material and preparation method thereof.
Background technology
The aluminium ash is the no small part of quantity in the solid waste that produces in electrolytic aluminum industry and aluminium, the aluminum products production process.The chemical ingredients of aluminium ash is mainly with Al
2O
3, SiO
2, MgO, Fe
2O
3, Na
2O, CaO and metallic aluminium etc. is main, also has some nitride, muriate and sulfide etc.General SiO
20.5～30%, Al
2O
310～75%, the ratio of its chemical ingredients is different and slightly change along with the raw material of each manufacturer and operational condition.
Usually the aluminium ash is used as the rubbish abandonment, and both contaminate environment needed a large amount of disposal places again, and the processing costs height.Along with the development of industrial process, the growing amount of aluminium ash is also more and more.How fully utilizing the aluminium ash is a worldwide important topic.The regeneration of aluminium ash mainly concentrates on following several aspect both at home and abroad at present:
1, calcium aluminate product: adopt washing, evaporation, crystalline method to isolate nonmetal product, this nonmetal product mainly comprises the compound of a large amount of aluminium and the compound of a spot of siliceous and magnesium, remove metallic aluminium and aluminium nitride in the nonmetal product, add the CaO source, mix, be sintered into calcium aluminate product (USP 6,238,633);
2, the recovery of aluminium salt: mainly be that this method mainly reclaims the aluminium in the aluminium ash, fails to reclaim other composition in the aluminium ash, also produces a large amount of waste liquids simultaneously with aluminium ash and hydrochloric acid or sulfuric acid reaction generation aluminium salt;
3, be used for concrete or material of construction: because the aluminium ash contains metallic aluminium, the aquation of metallic aluminium produces bubble, causes innerly in concrete or the material of construction producing pore, expanding makes internal structure loose, and intensity reduces, thereby aluminium ash utilization ratio is not high;
4, furnace refractory: composite desulfurizing agent is a main raw material with fluorite, lime mainly, and aluminium ash incorporation is no more than 40%, and molten iron is through the secondary desulfurization of aluminium ash sweetening agent, and manganese, silicon, carbon have burn in the molten iron;
5, refractory materials: adopt the aluminium ash to produce refractory materials, the fused brown corundum of the main production of the report at present (technology that the aluminium ash is produced brown corundum, Harbin University of Science and Technology's journal, 1996,1 (2): 48-50), " production method of brown corundum " (CN 90107092.0), " a kind of composite electro-fusing refractory material and production method thereof " technology such as (CN 200610018950.2).But these technology exist limitation at present: the one, need the Al in the aluminium ash
2O
3The content height; The 2nd, also incomplete to the utilization of aluminium ash component, waste is big.As produce brown corundum and magnesium-aluminium spinel and only utilized metallic aluminium, aluminum oxide or metallic aluminium, aluminum oxide and magnesium oxide in the aluminium ash.But contain a certain amount of useful composition SiO in the aluminium ash
2Can be wasted with AlN.
It is high and be difficult to by advantages such as metal melt are wetting that Sialon has good thermal shock stability, hot strength, Sialon is introduced the Sialon combined corundum material that corundum brick is made, the hot strength and the thermal shock resistance of corundum material have effectively been improved, owing to bigger, anti-molten steel, scouring and the penetrating power of improving corundum material also there is active effect simultaneously with the wetting angle of molten steel, slag liquid.But traditional method prepares a large amount of metallic aluminiums of Sialon composite ceramic material needs and elemental silicon, and required preparation temperature is higher, so the Sialon composite ceramic material cost height of preparation.The present invention adopts discarded aluminium ash effectively to solve the high problem of preparation cost as the synthetic Sialon composite ceramic material of raw material.
Summary of the invention
The purpose of this invention is to provide a kind of reduce environmental pollution, production cost low be that main raw material prepares Sialon composite ceramics and method thereof with the discarded aluminium ash of aluminium industrial production.Prepared Sialon composite ceramics has advantages such as good thermal shock resistance, anti-metal melt aggressiveness and alkali resistant aggressiveness.
For achieving the above object, the technical solution adopted in the present invention is: with the aluminium ash of 20～96wt%, the bauxitic clay grog fine powder of 0.5～55wt%, the SiO of 0.5～60wt%
2The metallic aluminium fine powder of fine powder, 0～10wt%, the elemental silicon fine powder of 0～43wt% mix, through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 0.5～5h earlier in Reaktionsofen under nitrogen atmosphere; heat-up rate with 2～5 ℃/min is warmed to 1300～1350 ℃, insulation 1～6h again; heat-up rate with 2～5 ℃/min is warmed to 1360～1500 ℃, insulation 2～10h then, naturally cools to room temperature at last under nitrogen protection.
Wherein: the main chemical composition of aluminium ash is Al
2O
3Be that 10～70wt%, Al are that 5～40wt%, MgO are 0.3～4.5wt%, SiO
2Be 0.5～30wt%, particle diameter is less than 100 orders; The particle diameter of bauxitic clay grog fine powder, metallic aluminium fine powder, elemental silicon fine powder is all less than 100 orders; SiO
2Fine powder be in silicon powder, silica powder, the fused silica powder one or more, particle diameter is less than 100 orders; Reaktionsofen or be atmosphere furnace or for electric arc furnace or for induction furnace.
Because adopt technique scheme, it is starting material that the present invention adopts wasted aluminium ash, and utilize metallic aluminium in the aluminium ash, aluminium nitride as reductive agent, by adding an amount of SiO
2Fine powder, elemental silicon fine powder, metallic aluminium fine powder, bauxitic clay grog fine powder be synthetic Sialon composite ceramics under nitrogen atmosphere, can turn waste into wealth, reduce environmental pollution; Can reduce simultaneously the cost of preparation Sialon composite ceramics.Prepared Sialon composite ceramic material has good anti-slag, iron, alkali erosional competency and anti-thermal shock stability, is good blast furnace lining material.Have society and economic worth widely.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 20～30wt%, the bauxitic clay grog fine powder of 45～55wt%, the silicon powder of 20～35wt% are mixed, through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 2～3h earlier in atmosphere furnace under nitrogen atmosphere; heat-up rate with 3～4 ℃/min is warmed to 1300～1350 ℃, insulation 3～3.5h again; heat-up rate with 2～3 ℃/min is warmed to 1360～1500 ℃, insulation 5～6h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein: the main chemical composition of aluminium ash is Al
2O
3Be 57.12%, Al is 24.06%, MgO is 0.48%, SiO
2Be 2.15%, Na
2O is 1.1%, CaO is 0.74%, TiO
2Be 0.63%, Fe
2O
3Be 1.23%, igloss is 10.58%, other is 1.9%; The chemical composition of bauxitic clay grog is: Al
2O
3Be 62.51wt%, SiO
2For 20.96wt%, MgO are that 0.45wt%, CaO are 0.22wt%, TiO
2Be 2.67wt%, Fe
2O
3For 1.18wt%, igloss are 11.98wt%; Aluminium ash, silicon powder, bauxitic clay grog fine powder particle diameter are less than 100 orders.
Through the X-ray diffraction analysis, main thing be corundum mutually with Sialon mutually.Scanning electron microscope shows that corundum is on chip, and Sialon is column, and two-phase is evenly distributed.
Embodiment 2
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 35～45wt%, the bauxitic clay grog fine powder of 0.5～15wt%, the silica powder of 45～60wt%, the elemental silicon fine powder of 0.1～10wt% are mixed, through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 3～5h earlier in electric arc furnace under nitrogen atmosphere; heat-up rate with 3～4 ℃/min is warmed to 1300～1350 ℃, insulation 5～6h again; heat-up rate with 2～4 ℃/min is warmed to 1360～1500 ℃, insulation 5～7h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein: the chemical composition of aluminium ash is: Al
2O
3For 64.17wt%, Al are that 8.69wt%, MgO are 2.53wt%, SiO
2Be 4.63wt%, Na
2O is that 1.85wt%, CaO are 1.91wt%, TiO
2Be 0.58wt%, Fe
2O
3For 1.33wt%, igloss are 10.75wt%, other is 3.56wt%.The chemical composition of bauxitic clay grog is: Al
2O
3Be 62.2wt%, SiO
2For 19.6wt%, MgO are 0.15wt%, Na
2O is that 0.08wt%, CaO are 0.07wt%, TiO
2Be 2.52wt%, Fe
2O
3For 1.17wt%, igloss are 14.25wt%.The particle diameter of aluminium ash, bauxitic clay grog fine powder, silica powder, elemental silicon fine powder is all less than 100 orders.
Through the X-ray diffraction analysis, main thing be corundum mutually with Sialon mutually.Scanning electron microscope shows that two-phase is evenly distributed, and crystal development is good.
Embodiment 3
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 50～60wt%, the bauxitic clay grog fine powder of 20～30wt%, the fused silica powder of 0.5～10wt%, the metallic aluminium fine powder of 0.1～3.5wt%, the elemental silicon fine powder of 15～25wt% are mixed, through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 0.5～2h earlier in induction furnace under nitrogen atmosphere; heat-up rate with 2～5 ℃/min is warmed to 1300～1350 ℃, insulation 1～2h again; heat-up rate with 2～3 ℃/min is warmed to 1360～1500 ℃, insulation 2～4h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein the chemical composition of aluminium ash is: Al
2O
3For 56.65wt%, Al are that 15.57wt%, MgO are 1.28wt%, SiO
2Be 5.32wt%, Na
2O is that 0.87wt%, CaO are 1.95wt%, TiO
2Be 0.76wt%, Fe
2O
3For 1.86wt%, igloss are 12.32wt%, other is 3.45wt%.The chemical composition of bauxitic clay grog is: Al
2O
3Be 59.1wt%, SiO
2For 23.6wt%, MgO are 0.18wt%, Na
2O is that 0.03wt%, CaO are 0.02wt%, TiO
2Be 2.62wt%, Fe
2O
3For 1.03wt%, igloss are 13.37wt%.Each batching is less than 100 purpose fine powders.
Through the X-ray diffraction analysis, main thing be corundum mutually with Sialon mutually.Scanning electron microscope shows that corundum and Sialon are column, and two-phase is evenly distributed, and crystal development is good.
Embodiment 4
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 65～70wt%, the bauxitic clay grog fine powder of 0.5～10wt%, the silicon powder of 0.5～15wt%, the silica powder of 1～10wt%, the metallic aluminium fine powder of 4～6wt%, the elemental silicon fine powder of 5～15wt% are mixed, through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 2～3h earlier in atmosphere furnace under nitrogen atmosphere; heat-up rate with 4～5 ℃/min is warmed to 1300～1350 ℃, insulation 4～6h again; heat-up rate with 2～4 ℃/min is warmed to 1360～1500 ℃, insulation 5～7h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein the chemical composition of aluminium ash is: Al
2O
3Be 57.12%, Al is 24.06%, MgO is 0.48%, SiO
2Be 2.15%, Na
2O is 1.1%, CaO is 0.74%, TiO
2Be 0.63%, Fe
2O
3Be 1.23%, igloss is 10.58%, other is 1.9%.The chemical composition of bauxitic clay grog is: Al
2O
3Be 78.19wt%, SiO
2For 3.86wt%, MgO are 0.11wt%, Na
2O is that 0.05wt%, CaO are 0.10wt%, TiO
2Be 2.95wt%, Fe
2O
3For 0.70wt%, igloss are 14.06wt%.Each batching is less than 100 purpose fine powders.
Through the X-ray diffraction analysis, main thing be corundum mutually with Sialon mutually.Scanning electron microscope shows that each is evenly distributed mutually, and crystal formation is good.
Embodiment 5
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 80～90wt%, the bauxitic clay grog fine powder of 0.5～9wt%, the silica powder of 0.5～6wt%, the fused silica powder of 2～8wt%, the metallic aluminium fine powder of 7～10wt% are mixed, through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 1～2h earlier in electric arc furnace under nitrogen atmosphere; heat-up rate with 4～5 ℃/min is warmed to 1300～1350 ℃, insulation 3～4h again; heat-up rate with 2～4 ℃/min is warmed to 1360～1500 ℃, insulation 3～5h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein the chemical composition of aluminium ash is: Al
2O
3For 56.53wt%, Al are that 14.39wt%, MgO are 2.36wt%, SiO
2Be 7.72wt%, Na
2O is that 1.85wt%, CaO are 1.69wt%, TiO
2Be 0.58wt%, Fe
2O
3For 1.33wt%, igloss are 10.61wt%, other is 2.94wt%.The chemical composition of bauxitic clay grog is: Al
2O
3Be 62.8wt%, SiO
2For 19.1wt%, MgO are 0.09wt%, Na
2O is that 0.08wt%, CaO are 0.06wt%, TiO
2Be 2.12wt%, Fe
2O
3For 1.23wt%, igloss are 14.51wt%.Each batching is less than 100 purpose fine powders.
Through the X-ray diffraction analysis, main thing be corundum mutually with Sialon mutually.Scanning electron microscope shows that two-phase is sheet, is evenly distributed.
Embodiment 6
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 91～96wt%, the bauxitic clay grog fine powder of 0.5～5wt%, the silicon powder of 1～5wt%, the silica powder of 0.5～5wt%, the fused silica powder of 1～6wt% are mixed, through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 3～4h earlier in induction furnace under nitrogen atmosphere; heat-up rate with 3～5 ℃/min is warmed to 1300～1350 ℃, insulation 3～5h again; heat-up rate with 2～5 ℃/min is warmed to 1360～1500 ℃, insulation 6～10h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein the chemical composition of aluminium ash is: Al
2O
3Be 52.60%, Al is 9.90%, MgO is 3.60%, SiO
2Be 10.36%, Na
2O is 3.90%, CaO is 3.20%, TiO
2Be 1.80%, Fe
2O
3Be 1.50%, igloss is 11.87%, other is 1.30%.The chemical composition of bauxitic clay grog is: Al
2O
3Be 73.76wt%, SiO
2For 7.90wt%, MgO are 0.10wt%, Na
2O is that 0.10wt%, CaO are 0.11wt%, TiO
2Be 2.71wt%, Fe
2O
3For 0.93wt%, igloss are 14.40wt%.Each batching is less than 100 purpose fine powders.
Through the X-ray diffraction analysis, main thing be corundum mutually with Sialon mutually.Scanning electron microscope shows that two-phase is evenly distributed.
Embodiment 7
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 40～50wt%, the bauxitic clay grog fine powder of 10～15wt%, the silicon powder of 5～10wt%, the fused silica powder of 15～20wt%, the metallic aluminium fine powder of 0.1～5wt%, the elemental silicon fine powder of 15～20wt% are mixed through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 2～4h earlier in induction furnace under nitrogen atmosphere; heat-up rate with 4～5 ℃/min is warmed to 1300～1350 ℃, insulation 3～4h again; heat-up rate with 2～4 ℃/min is warmed to 1360～1500 ℃, insulation 6～8h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein the chemical composition of aluminium ash is: Al
2O
3Be 37.97%, Al is 22.6%, MgO is 2.5%, SiO
2Be 9.8%, Na
2O is 3.9%, CaO is 3.1%, TiO
2Be 2.5%, Fe
2O
3Be 2.1%, igloss is 13.61%, other is 1.9%.The chemical composition of bauxitic clay grog is: Al
2O
3Be 68.48wt%, SiO
2For 13.42wt%, MgO are that 0.46wt%, CaO are 0.26wt%, TiO
2Be 3.34wt%, Fe
2O
3For 1.36wt%, igloss are 12.67wt%.Each batching is less than 100 purpose fine powders.
Through the X-ray diffraction analysis, main thing be corundum mutually with Sialon mutually.Scanning electron microscope shows that two-phase is evenly distributed, and crystal development is good.
Embodiment 8
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 70～80wt%, the bauxitic clay grog fine powder of 3～8wt%, the silicon powder of 5～10wt%, the elemental silicon fine powder of 10～15wt% are mixed through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 0.5～3h earlier in atmosphere furnace under nitrogen atmosphere; heat-up rate with 4～5 ℃/min is warmed to 1300～1350 ℃, insulation 1～4h again; heat-up rate with 2～4 ℃/min is warmed to 1360～1500 ℃, insulation 2～6h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein the chemical composition of aluminium ash is: Al
2O
3Be 37.68%, Al is 15.7%, MgO is 11.7%, SiO
2Be 9.6%, Na
2O is 3.2%, CaO is 2.9%, TiO
2Be 2.1%, Fe
2O
3Be 1.7%, igloss is 13.68%, other is 1.7%.The chemical composition of bauxitic clay grog is: Al
2O
3Be 73.76wt%, SiO
2For 7.90wt%, MgO are 0.10wt%, Na
2O is that 0.10wt%, CaO are 0.11wt%, TiO
2Be 2.71wt%, Fe
2O
3For 0.93wt%, igloss are 14.40wt%.Each batching is less than 100 purpose fine powders.
Through the X-ray diffraction analysis, main thing is the Sialon phase mutually.Scanning electron microscope shows that crystal formation physically well develops.
Embodiment 9
A kind of Sialon composite ceramic material and preparation method thereof: earlier the aluminium ash of 40～50wt%, the bauxitic clay grog fine powder of 5～10wt%, the silica powder of 2～5wt%, the metallic aluminium fine powder of 5～7wt%, the elemental silicon fine powder of 35～43wt% are mixed through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 2～4h earlier in electric arc furnace under nitrogen atmosphere; heat-up rate with 4～5 ℃/min is warmed to 1300～1350 ℃, insulation 3～4h again; heat-up rate with 2～4 ℃/min is warmed to 1360～1500 ℃, insulation 6～8h then; under nitrogen protection, naturally cool to room temperature at last, obtain the Sialon composite ceramic material.
Wherein the chemical composition of aluminium ash is: Al
2O
3Be 38.57%, Al is 19.2%, MgO is 2.5%, SiO
2Be 12.6%, Na
2O is 3.9%, CaO is 3.1%, TiO
2Be 2.5%, Fe
2O
3Be 2.1%, igloss is 13.61%, other is 1.9%.The chemical composition of bauxitic clay grog is: Al
2O
3Be 61.3wt%, SiO
2For 20.6wt%, MgO are 0.09wt%, Na
2O is that 0.08wt%, CaO are 0.06wt%, TiO
2Be 2.12wt%, Fe
2O
3For 1.23wt%, igloss are 14.51wt%.Each batching is less than 100 purpose fine powders.
Through the X-ray diffraction analysis, main thing is the Sialon phase mutually.Scanning electron microscope shows that crystal is column and physically well develops.
Claims (6)
1, a kind of preparation method of Sialon composite ceramic material is characterized in that the aluminium ash of 20～96wt%, the bauxitic clay grog fine powder of 0.5～55wt%, the SiO of 0.5～60wt%
2The metallic aluminium fine powder of fine powder, 0～10wt%, the elemental silicon fine powder of 0～43wt% mix, through stirring aftershaping; Base substrate after the moulding is warmed to 1000～1100 ℃, insulation 0.5～5h earlier in Reaktionsofen under nitrogen atmosphere; heat-up rate with 2～5 ℃/min is warmed to 1300～1350 ℃, insulation 1～6h again; heat-up rate with 2～5 ℃/min is warmed to 1360～1500 ℃, insulation 2～10h then, naturally cools to room temperature at last under nitrogen protection.
2, the preparation method of Sialon composite ceramic material according to claim 1 is characterized in that the main chemical composition of aluminium ash is Al
2O
3Be that 10～70wt%, Al are that 5～40wt%, MgO are 0.3～4.5wt%, SiO
2Be 0.5～30wt%, particle diameter is less than 100 orders.
3, the preparation method of Sialon composite ceramic material according to claim 1 is characterized in that SiO
2Fine powder be in silicon powder, silica powder, the fused silica powder one or more, particle diameter is less than 100 orders.
4, the preparation method of Sialon composite ceramic material according to claim 1 is characterized in that Reaktionsofen or for atmosphere furnace or for electric arc furnace or for induction furnace.
5, the preparation method of Sialon composite ceramic material according to claim 1, the particle diameter that it is characterized in that bauxitic clay grog fine powder, metallic aluminium fine powder, elemental silicon fine powder is all less than 100 orders.
6, the prepared Sialon composite ceramics of the preparation method of Sialon composite ceramic material according to claim 1.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439131A (en) * | 2014-12-24 | 2015-03-25 | 江苏锴博材料科技有限公司 | Method for prolonging service life of amorphous band manufacturing BN nozzle |
| CN104844223A (en) * | 2015-04-24 | 2015-08-19 | 武汉科技大学 | Alkali metal salt based Sialon powder material and preparation method thereof |
| CN111056833A (en) * | 2019-12-03 | 2020-04-24 | 宜兴市耐火材料有限公司 | Nitride-bonded spinel sliding plate and preparation process thereof |
| CN111825433A (en) * | 2020-05-25 | 2020-10-27 | 河南省亚细亚耐火材料有限公司 | Special high-strength wear-resistant high-alumina brick for lime kiln lining and preparation method thereof |
| CN112295384A (en) * | 2020-10-15 | 2021-02-02 | 西南科技大学 | Method for preparing flue gas purifying agent from aluminum ash |
| CN116410006A (en) * | 2023-04-06 | 2023-07-11 | 江苏沙钢集团有限公司 | beta-Sialon-Al 2 O 3 -SiC composite ceramic material and preparation method thereof |
-
2007
- 2007-06-14 CN CNB200710052469XA patent/CN100564315C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439131A (en) * | 2014-12-24 | 2015-03-25 | 江苏锴博材料科技有限公司 | Method for prolonging service life of amorphous band manufacturing BN nozzle |
| CN104844223A (en) * | 2015-04-24 | 2015-08-19 | 武汉科技大学 | Alkali metal salt based Sialon powder material and preparation method thereof |
| CN104844223B (en) * | 2015-04-24 | 2017-01-04 | 武汉科技大学 | A kind of Sialon powder body material based on alkali metal salt and preparation method thereof |
| CN111056833A (en) * | 2019-12-03 | 2020-04-24 | 宜兴市耐火材料有限公司 | Nitride-bonded spinel sliding plate and preparation process thereof |
| CN111056833B (en) * | 2019-12-03 | 2022-07-05 | 宜兴市耐火材料有限公司 | Nitride-bonded spinel sliding plate and preparation process thereof |
| CN111825433A (en) * | 2020-05-25 | 2020-10-27 | 河南省亚细亚耐火材料有限公司 | Special high-strength wear-resistant high-alumina brick for lime kiln lining and preparation method thereof |
| CN112295384A (en) * | 2020-10-15 | 2021-02-02 | 西南科技大学 | Method for preparing flue gas purifying agent from aluminum ash |
| CN116410006A (en) * | 2023-04-06 | 2023-07-11 | 江苏沙钢集团有限公司 | beta-Sialon-Al 2 O 3 -SiC composite ceramic material and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN100564315C (en) | 2009-12-02 |
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