CN108218409A - A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material - Google Patents

A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material Download PDF

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CN108218409A
CN108218409A CN201711352073.7A CN201711352073A CN108218409A CN 108218409 A CN108218409 A CN 108218409A CN 201711352073 A CN201711352073 A CN 201711352073A CN 108218409 A CN108218409 A CN 108218409A
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composite material
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rotary kiln
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张军杰
钱晶
黄京衡
钱志明
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JIANGSU NUOMING HIGH TEMPERTURE MATERIALS CO Ltd
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JIANGSU NUOMING HIGH TEMPERTURE MATERIALS CO Ltd
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Abstract

The present invention relates to a kind of hazardous waste rotary kiln polymolecularity Al2O3‑Al2O3·ZrO2The preparation method of composite material, is as follows：(1) by Al2O3Source and ZrO2Source is introduced rush and is burnt agent with certain proportion, after being blended in the ball mill, is first fired 24 48h with high-temperature melting method, is then down to room temperature with method for quick cooling, obtains Al2O3·ZrO2Eutectic material；(2) with Al2O3·ZrO2Composite material and corundum, alumine, activated alumina and bonding clay are raw material, and using spent pulping liquor as bonding agent, polymolecularity Al is then obtained after molding, high temperature firing2O3‑Al2O3·ZrO2Composite material.The material has the excellent performance indicators such as the porosity is low, intensity is high, resistance to flaking is good, good thermal shock stability, oxidation-reduction resistance is good, anti-erosion and permeability resistance are good, disclosure satisfy that the use of hazardous waste rotary kiln.

Description

A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2Composite material Preparation method
Technical field
The present invention relates to a kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation side of composite material Method belongs to fire resisting material field.
Background technology
Swinging incinerating kiln is the widely applied burning facility of International Industry waste process field, burns and leads in industrial waste The National Industrial waste treatment technique political affairs that the occupation rate of market in domain is higher and the Department of Science and Technology of China and State Environmental Protection Administration are issued The incinerator type of furnace recommended in plan.It can handle solid and liquid wastes simultaneously, and solid waste is sent into back by conveying equipment special Rotary kiln, liquid wastes spray into kiln body feed end by high-efficient atomizing equipment, and waste completes moisture evaporation, volatile matter in rotary kiln The process for being precipitated, catching fire and burning, grey slag part are discharged by dual firing chamber bottom, and generated flue gas enters dual firing chamber, in two combustions Interior is mixed with secondary combustion air, reaches flue gas completely burned, realizes tail gas safe qualified discharge.The spy of Rotation error Point is that wide adaptability, simple and convenient operation and maintenance, service life are long.
Hazardous waste rotary kiln processing waste component complexity it is various, especially the component volatilizations such as alkali, sulphur, chlorine come out after There is very high concentration in kiln, significantly affect the service life of dangerous waste firing efficiency and refractory material.Therefore, hazardous waste rotary kiln corresponds to Refractory material should have excellent quality and height stability.It is very low to possess coefficient of thermal expansion, thermal conductivity is high, resistance to heat shocks Can be good, elevated temperature strength is high, and the erosion of antiacid alkali and salt is not soaked by metal and slag, the refractory material of light speciality is fitted For environment in the kiln of hazardous waste rotary kiln complexity.
To meet requirement of the hazardous waste rotary kiln to refractory material, the present invention prepares a kind of high dispersive haveing excellent performance Property Al2O3-Al2O3·ZrO2Composite material, to improve the service cycle of hazardous waste.
Invention content
The present invention is directed to prepare a kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2Composite material, With the porosity is low, intensity is high, resistance to flaking is good, good thermal shock stability, oxidation-reduction resistance are good, anti-erosion and permeability resistance are good Etc. excellent performance indicator, the use of hazardous waste rotary kiln disclosure satisfy that.
In order to reach object above, the present invention adopts the following technical scheme that：
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material is specific to walk It is rapid as follows：(1) by Al2O3Source and ZrO2Source is introduced rush and is burnt agent with certain proportion, after being blended in the ball mill, is first passed through 1600-1900 DEG C of firing 24-48h, is then down to room temperature with method for quick cooling, obtains Al2O3·ZrO2Eutectic material；(2) with Al2O3·ZrO2Composite material, corundum or alumine, activated alumina and bonding clay are raw material, using spent pulping liquor as knot Then mixture obtains polymolecularity Al after molding, high temperature firing2O3-Al2O3·ZrO2Composite material.
Al2O3·ZrO2The Al of eutectic material2O3Source includes activated alumina, diaspore etc., ZrO2Source is aoxidized including monocline Zirconium, desilicated zirconia etc., Al2O3And ZrO2Mass percent be w (ZrO2) %=20%~60%.
Polymolecularity Al2O3-Al2O3·ZrO2Composite material, each content of material is count by weight percentage for 55-70%'s Corundum or alumine, the Al of 30-50%2O3·ZrO2Eutectic material, the activated alumina of 5-15%, the combination of 1-5% are glued Soil, the spent pulping liquor of additional above-mentioned raw materials total amount 2-6% is bonding agent.
The corundum or alumine have 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mmm, the Al2O3ZrO2 Eutectic material has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mmm, the granularity of the activated alumina be less than 0.088mmm, the bonding clay granularity are less than 0.088mmm, and varigrained ratio is：1≤granularity≤3mm, 44- 66%；0≤granularity≤1mm, 18-30%；0≤granularity≤0.088mm 17-30%.
Beneficial effects of the present invention are：ZrO2In high-temp combustion and by the environment of mechanical stress, it can generate monocline The phase transformation in → four directions, with the volume change of 4%-5%, while in ZrO2Tip and surrounding generate micro-crack, these micro-cracks It can make energy dissipation, eliminate and slow down material crack extension caused by being concentrated due to energy stress and destroy, so as to improve material The intensity and toughness of material so that material has excellent thermal shock resistance；ZrO2Fusing point it is high, chemical stability is good, no matter right Bronsted lowry acids and bases bronsted lowry or glass melt have very high chemical inertness, are not easy to be soaked by liquid metal so that material has excellent anti-invade Corrosion energy；The cost of zirconium oxide is more expensive, and the present invention passes through Al2O3·ZrO2The preparation of eutectic material so that ZrO2In Al2O3 Middle high degree of dispersion, Al2O3·ZrO2Eutectic material has ZrO2Excellent performance, can reach and introduce a small amount of ZrO2It can obtain The purpose for the refractory product haveing excellent performance, reduces cost；Product of the present invention is by introducing high-activity aluminium oxide micro mist and combination Clay, material has fine and close structure after high temperature sintering, improves the anti-permeability performance of material.Polymolecularity Al2O3-Al2O3· ZrO2Composite material has excellent physical performance index：Apparent porosity 13-17%, bulk density 2.80-3.20g/cm3, room temperature Compressive resistance 110-200MPa, refractoriness under load are more than 1650 DEG C, and thermal shock resistance is more than 25 times and excellent anti-oxidant Reproducibility, anti-erosion and permeability resistance.Product of the present invention disclosure satisfy that the use of hazardous waste rotary kiln, and the popularization of product can be with The power thin for environmental protection cause contribution brocade.
Specific embodiment
Embodiment 1
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 20% ZrO2With 80% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 50% Plate diamond spar, 35% Al2O3·ZrO2Eutectic material, 10% activated alumina, 5% bonding clay, additional 3% zirconium Colloidal sol is bonding agent, during production, first weighs various raw materials by proportioning, is uniformly mixed, obtain pug through being kneaded, then rubbed pressure Power machine compression moulding first dries 10-25h at 120-250 DEG C, is then obtained in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h high Dispersed Al2O3-Al2O3·ZrO2Composite material.
The corundum has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3- 1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, the bonding clay Granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 15.5%, bulk density 3.02g/cm3, cold crushing strength 153MPa, thermal shock resistance (1100 DEG C, water cooling) 30 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
Embodiment 2
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 25% ZrO2With 75% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 55% Plate diamond spar, 30% Al2O3·ZrO2Eutectic material, 10% activated alumina, 5% bonding clay, additional 3% zirconium Colloidal sol is bonding agent, during production, first weighs various raw materials by proportioning, is uniformly mixed, obtain pug through being kneaded, then rubbed pressure Power machine compression moulding first dries 10-25h at 120-250 DEG C, is then obtained in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h high Dispersed Al2O3-Al2O3·ZrO2Composite material.
The corundum has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3- 1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, the bonding clay Granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 15.0%, bulk density 3.05g/cm3, cold crushing strength 175MPa, thermal shock resistance (1100 DEG C, water cooling) 33 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
Embodiment 3
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 30% ZrO2With 70% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 52% Plate diamond spar, 33% Al2O3·ZrO2Eutectic material, 10% activated alumina, 5% bonding clay, additional 3% zirconium Colloidal sol is bonding agent, during production, first weighs various raw materials by proportioning, is uniformly mixed, obtain pug through being kneaded, then rubbed pressure Power machine compression moulding first dries 10-25h at 120-250 DEG C, is then obtained in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h high Dispersed Al2O3-Al2O3·ZrO2Composite material.
The corundum has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3- 1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, the bonding clay Granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 14.7%, bulk density 3.10g/cm3, cold crushing strength 188MPa, thermal shock resistance (1100 DEG C, water cooling) 37 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
Embodiment 4
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 30% ZrO2With 70% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 55% 88 alumina, 30% Al2O3·ZrO2Eutectic material, 10% activated alumina, 5% bonding clay, additional 3% zirconium are molten Glue is bonding agent, during production, first weighs various raw materials by proportioning, is uniformly mixed, obtain pug through being kneaded, then rubbed pressure Machine compression moulding first dries 10-25h at 120-250 DEG C, then obtains high score in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h Dissipate property Al2O3-Al2O3·ZrO2Composite material.
88 alumina has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, and the combination is glued Soil granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 15.8%, bulk density 2.98g/cm3, cold crushing strength 165MPa, thermal shock resistance (1100 DEG C, water cooling) 32 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
Embodiment 5
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 35% ZrO2With 65% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 60% 88 alumina, 30% Al2O3·ZrO2Eutectic material, 5% activated alumina, 5% bonding clay, additional 2.5% dextrin For bonding agent, during production, various raw materials first are weighed by proportioning, are uniformly mixed, obtain pug through being kneaded, then rubbed forcing press Compression moulding first dries 10-25h at 120-250 DEG C, then obtains high dispersive in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h Property Al2O3-Al2O3·ZrO2Composite material.
88 alumina has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, and the combination is glued Soil granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 16.2%, bulk density 2.93g/cm3, cold crushing strength 153MPa, thermal shock resistance (1100 DEG C, water cooling) 28 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
Embodiment 6
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 35% ZrO2With 65% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 60% 88 alumina, 30% Al2O3·ZrO2Eutectic material, 5% activated alumina, 5% bonding clay, additional 2.5% dextrin For bonding agent, during production, various raw materials first are weighed by proportioning, are uniformly mixed, obtain pug through being kneaded, then rubbed forcing press Compression moulding first dries 10-25h at 120-250 DEG C, then obtains high dispersive in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h Property Al2O3-Al2O3·ZrO2Composite material.
88 alumina has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, and the combination is glued Soil granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 16.2%, bulk density 2.93g/cm3, cold crushing strength 158MPa, thermal shock resistance (1100 DEG C, water cooling) 27 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
Embodiment 7
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 35% ZrO2With 65% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 55% 83 alumina, 35% Al2O3·ZrO2Eutectic material, 5% activated alumina, 5% bonding clay, additional 2.5% dextrin For bonding agent, during production, various raw materials first are weighed by proportioning, are uniformly mixed, obtain pug through being kneaded, then rubbed forcing press Compression moulding first dries 10-25h at 120-250 DEG C, then obtains high dispersive in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h Property Al2O3-Al2O3·ZrO2Composite material.
83 alumina has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, and the combination is glued Soil granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 16.4%, bulk density 2.91g/cm3, cold crushing strength 162MPa, thermal shock resistance (1100 DEG C, water cooling) 28 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
Embodiment 8
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 20% ZrO2With 80% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 50% 83 alumina, 45% Al2O3·ZrO2Eutectic material, 10% activated alumina, 5% bonding clay, additional 2.5% paste Essence is bonding agent, during production, first weighs various raw materials by proportioning, is uniformly mixed, obtain pug through being kneaded, then rubbed pressure Machine compression moulding first dries 10-25h at 120-250 DEG C, then obtains high score in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h Dissipate property Al2O3-Al2O3·ZrO2Composite material.
83 alumina has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, and the combination is glued Soil granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 16.6%, bulk density 2.89g/cm3, cold crushing strength 169MPa, thermal shock resistance (1100 DEG C, water cooling) 29 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
Embodiment 9
A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, (1) is by matter Measure percentages, 25% ZrO2With 75% Al2O3, after being blended in the ball mill, first pass through 1600-1900 DEG C of firing 24- Then 48h is down to room temperature with method for quick cooling, obtain Al2O3·ZrO2Eutectic material；(2) by mass percentage, 50% 83 alumina, 40% Al2O3·ZrO2Eutectic material, 5% activated alumina, 5% bonding clay, additional 2.5% dextrin For bonding agent, during production, various raw materials first are weighed by proportioning, are uniformly mixed, obtain pug through being kneaded, then rubbed forcing press Compression moulding first dries 10-25h at 120-250 DEG C, then obtains high dispersive in 1500 DEG C of -1800 DEG C of high temperature sintering 5-12h Property Al2O3-Al2O3·ZrO2Composite material.
83 alumina has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, and the combination is glued Soil granularity is less than 0.088mm
The performance indicator of products obtained therefrom is：Apparent porosity 16.2%, bulk density 2.91g/cm3, cold crushing strength 155MPa, thermal shock resistance (1100 DEG C, water cooling) 26 times, refractoriness under load are more than 1650 DEG C, oxidation-reduction resistance, anti-erosion It is preferable with permeability resistance.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications should also regard For protection scope of the present invention.

Claims (5)

1. a kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material, feature exist In being as follows：(1) by Al2O3Source and ZrO2Source is introduced rush and is burnt agent with certain proportion, after being blended in the ball mill, 1600-1900 DEG C of firing 24-48h is first passed through, room temperature is then down to method for quick cooling, obtains Al2O3·ZrO2Eutectic material； (2) with Al2O3·ZrO2Composite material, corundum or alumine, activated alumina and bonding clay are raw material, are given up with paper pulp Liquid is bonding agent, and polymolecularity Al is then obtained after molding, high temperature firing2O3-Al2O3·ZrO2Composite material.
2. Al according to claim 12O3·ZrO2Eutectic material, it is characterised in that：Al2O3Source include activated alumina, Diaspore etc., ZrO2Source includes monoclinic zirconia, desilicated zirconia etc., Al2O3And ZrO2Mass percent be w (ZrO2) %=20% ~60%.
3. polymolecularity Al according to claim 12O3-Al2O3·ZrO2Composite material, it is characterised in that：Each substance contains Amount is count by weight percentage the corundum or alumine of 55-70%, the Al of 30-50%2O3·ZrO2Eutectic material, 5- 15% activated alumina, the bonding clay of 1-5%, the spent pulping liquor of additional above-mentioned raw materials total amount 2-6% is bonding agent.
4. polymolecularity Al according to claim 12O3-Al2O3·ZrO2Composite material, it is characterised in that：The corundum Or alumine has 3-1mm, 1-0mm, less than tri- kinds of granularities of 0.088mm, the Al2O3·ZrO2Eutectic material has 3-1mm, 1- 0mm, less than tri- kinds of granularities of 0.088mm, the granularity of the activated alumina is less than 0.088mm, and the bonding clay granularity is Less than 0.088mm, varigrained ratio is：1≤granularity≤3mm, 44-66%；0≤granularity≤1mm, 18-30%；0≤grain Degree≤0.088mm 17-30%.
5. polymolecularity Al according to claim 12O3-Al2O3·ZrO2Composite material, it is characterised in that：With stomata It is excellent that rate is low, intensity is high, resistance to flaking is good, good thermal shock stability, oxidation-reduction resistance is good, anti-erosion and permeability resistance are good etc. Performance indicator disclosure satisfy that the use of hazardous waste rotary kiln.
CN201711352073.7A 2017-12-15 2017-12-15 A kind of hazardous waste rotary kiln polymolecularity Al2O3-Al2O3·ZrO2The preparation method of composite material Pending CN108218409A (en)

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CN1693288A (en) * 2005-05-12 2005-11-09 符宗德 Mullite composite brick for basic rotary kiln
CN103086730A (en) * 2013-03-05 2013-05-08 江苏诺明高温材料股份有限公司 Preparation method of magnesium spinelle zirconium eutectic sand
CN105294131A (en) * 2015-11-19 2016-02-03 江苏诺明高温材料股份有限公司 Preparation method of high dispersibility MgO-MgAl2O4-ZrO2 material

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CN1693288A (en) * 2005-05-12 2005-11-09 符宗德 Mullite composite brick for basic rotary kiln
CN103086730A (en) * 2013-03-05 2013-05-08 江苏诺明高温材料股份有限公司 Preparation method of magnesium spinelle zirconium eutectic sand
CN105294131A (en) * 2015-11-19 2016-02-03 江苏诺明高温材料股份有限公司 Preparation method of high dispersibility MgO-MgAl2O4-ZrO2 material

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Application publication date: 20180629