CN105152669A - Large blast furnace main iron runner castable - Google Patents
Large blast furnace main iron runner castable Download PDFInfo
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- CN105152669A CN105152669A CN201510735443.XA CN201510735443A CN105152669A CN 105152669 A CN105152669 A CN 105152669A CN 201510735443 A CN201510735443 A CN 201510735443A CN 105152669 A CN105152669 A CN 105152669A
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Abstract
The invention relates to a large blast furnace main iron runner castable, and belongs to the field of refractory castables. The large blast furnace main iron runner castable is prepared from, by weight, 5-8 parts of 8-5 mm chromium nitride, 15-20 parts of 5-3 mm chromium nitride, 10-15 parts of 3-1 mm sillimanite, 8-15 parts of 1-0 mm calcium chromate, 2-5 parts of partial clay powder, 3-7 parts of cobaltous oxide aluminum powder, 5-10 parts of cutting powder, 3-8 parts of amorphous graphite powder, 1-2 parts of composite charcoal powder, 0-3 parts of molybdenum trioxide powder, 3-5 parts of alumina micro powder, 1-5 parts of magnesium oxide iron powder, 1-3 parts of rho-aluminum oxide, 0-5 parts of electric smelting pure calcium aluminate cement and an addition agent, wherein the addition agent is prepared from, by weight, 0.1-0.2 part of calcium lignosulphonate, 0.01-0.05 part of nanometer potato powder, 0.01 part of malic acid and 0.1 part of C12H14N4O5S2. A blast furnace iron runner made of the castable has the advantages of being good in thermal shock resistance, high in corrosion resistance, large in iron exchanging amount and long in life.
Description
Technical field
The present invention relates to a kind of large blast furnace main iron runner pouring material, belong to metallurgy fire resisting material field.
Background technology
Existing main iron runner pouring material is mostly Al2O3-SiC-C matter mould material, but common Al2O3-SiC-C matter main iron runner pouring material uses on blast furnace, and disposable iron influx is at about 120,000 tons.Along with strengthening smelting, the demand improving hot metal output becomes increasingly conspicuous, and main iron hook requires that the demand that disposable iron influx is large is also more and more urgent, but main iron hook is because resistance to fouling is poor at present, heat-shock resistance is poor, has occurred thermal spalling and structure spalling, is main iron hook life-span short major reason.
CN102101782A discloses a kind of main iron runner pouring material, and described mould material is made up of magnesium-aluminium spinel, Brown Alundum, silicon carbide, modified Nano carbon dust, SiO2 micro mist, aluminous cement, α-Al2O3 micro mist, explosion-proof fiber, metallic silicon power, tripoly phosphate sodium STPP, Al (OH) 3 and Mg (OH) 2 complex sol suspension.But this take Brown Alundum as the mould material of principal constituent, heat-shock resistance is poor, easily cause thermal spalling and structure spalling, main iron hook repairing work frequency is increased substantially, produce to blast furnace stability and safety and bring larger hidden danger, adopt colloidal sol as bonding agent, viscosity is not easily constructed comparatively greatly, in addition cost also improves much, therefore still needs to improve.
Summary of the invention
The object of this invention is to provide a kind of thermal shock resistance good, can resist molten iron preferably and corrode, minimizing is peeled off, a kind of Blast furnace main iron channel castable of long service life.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of large blast furnace main iron runner pouring material, described mould material comprises major ingredient and admixture, wherein the component of major ingredient is made up of the component of following parts by weight:: 8-5mm mono-chromium nitride: 5-8 part, 5-3mm mono-chromium nitride: 15-20 part, 3-1mm sillimanite: 10-15 part, 1-0mm yellow ultramarine: 8-15 part, inclined clay powder 2-5 part, cobalt oxide aluminium powder: 3-7 part, cutting powder: 5-10 part, amorphous graphite powder 3-8 part; Compound powdered carbon 1-2 part; Molybdic oxide powder 0-3 part; Alumina powder 3-5 part, magnesium oxide iron powder 1-5 part, ρ aluminum oxide 1-3 part, electric smelting pure calcium aluminate cement 0-5 part; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.1-0.2 part, nanometer mealy potato 0.01-0.05 part, oxysuccinic acid 0.01 part, C
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20.1 part.
Further, described inclined clay powder reaches the substance A of more than 60% for first clay obtains weight ratio shared by the composition of metakaolin after Overheating Treatment, and substance A and white garnet, dextrin mix by weight 8.5:1.2:0.3, are inclined clay powder.
Further, described cutting powder is the cutting powder cutting silicon single crystal generation in monocrystalline silicon production process, and described main component is SiC50-70%, elemental silicon 30-50%; Described nanometer mealy potato is that potato starch is carried out the powder that micronization becomes nanoscale.
Further, described compound powdered carbon is hard charcoal, sugar charcoal, the mixture of pitch coke weight ratio 1:2:7.
Preferential, the weight part of described mould material consists of: 8-5mm mono-chromium nitride: 8 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 12 parts, 1-0mm yellow ultramarine: 15 parts, inclined clay powder 5 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 2 parts, ρ aluminum oxide, alumina powder 3 parts, 2 parts, molybdic oxide powder; Magnesium oxide iron powder 4 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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20.1 part.
Preferential, the weight part of described mould material consists of 8-5mm mono-chromium nitride: 10 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 15 parts, 1-0mm yellow ultramarine: 14 parts, inclined clay powder 4 parts, cobalt oxide aluminium powder: 6 parts, cutting powder: 9 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 2 parts, ρ aluminum oxide, alumina powder 3 parts, 2 parts, molybdic oxide powder; Magnesium oxide iron powder 3 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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Preferential, the weight part of described mould material consists of 8-5mm mono-chromium nitride: 11 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 15 parts, 1-0mm yellow ultramarine: 14 parts, inclined clay powder 3 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 3 parts, ρ aluminum oxide, alumina powder 3 parts, 1 part, molybdic oxide powder; Magnesium oxide iron powder 2 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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Preferential, the weight part of described mould material consists of 8-5mm mono-chromium nitride: 13 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 14 parts, 1-0mm yellow ultramarine: 15 parts, inclined clay powder 3 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 1 part, ρ aluminum oxide, alumina powder 3 parts, 0 part, molybdic oxide powder; Magnesium oxide iron powder 1 part, electric smelting pure calcium aluminate cement 4 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.18 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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Preparation method of the present invention, after product of the present invention is poured into stirrer, adds the cleaning water of 3-8% outward, stirs, can construct, and through gravity flow or vibrating casting, can be able to can come into operation after construction without the need to baking.
Beneficial effect of the present invention: the yellow ultramarine added in formula, cobalt oxide aluminium powder, cutting powder, amorphous graphite powder, compound powdered carbon, the materials such as molybdic oxide powder improve the erosion-resisting characteristics of iron runner, thermal shock resistance, resistance to elevated temperatures, improve the resistance of oxidation of iron runner, also increase the wetting angle of iron runner and molten iron simultaneously, the infiltration of molten iron is corroded and becomes more difficult, main iron hook can be avoided preferably to infiltrate the problem of peeling off, the not problem of resistance to erosion; By adopting ρ aluminum oxide and cementitious composite as bonding agent, while iron runner system can be made purer, improve the properties of the high temperature resistant aspect of iron runner, avoiding the construction inconvenience that uses sol binder viscosity to cause too greatly and the relatively expensive defect of colloidal sol, it also avoid because being used alone the too low defect of iron runner early strength that ρ aluminum oxide causes; By introducing calcium lignin sulphonate, nanometer mealy potato, oxysuccinic acid, C
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2, inclined clay powder, can reduce mould material amount of water, improves the mobility of mould material, and improve the explosion-proof performance of mould material, the workability under the high temperature of stokehold, enhances hot strength and the properties of iron runner.Use the present invention, iron runner and molten iron are not easily soaked, and resistance to fouling is good, good thermal shock stability, has good workability, meet completely blast furnace normally tap a blast furnace produce needs, effectively can improve the not anti-erosion of current blast furnace due to main iron hook, heat-shock resistance difference and the production that causes is unstable.The present invention draws through laboratory experiment and on same blast furnace with the comparative experiments of present product: the resistance to fouling of product of the present invention, the performances such as slag resistance outclass the product of the current use of client, and iron influx reaches about 2 times of the like product of every current use of blast furnace.
Embodiment
The formula 1 of large blast furnace main iron runner pouring material, comprise the component of following parts by weight: 8-5mm mono-chromium nitride: 8 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 12 parts, 1-0mm yellow ultramarine: 15 parts, inclined clay powder 5 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 2 parts, ρ aluminum oxide, alumina powder 3 parts, 2 parts, molybdic oxide powder; Magnesium oxide iron powder 4 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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The formula 2 of large blast furnace main iron runner pouring material, comprise the component of following parts by weight: 8-5mm mono-chromium nitride: 10 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 15 parts, 1-0mm yellow ultramarine: 14 parts, inclined clay powder 4 parts, cobalt oxide aluminium powder: 6 parts, cutting powder: 9 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 2 parts, ρ aluminum oxide, alumina powder 3 parts, 2 parts, molybdic oxide powder; Magnesium oxide iron powder 3 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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Large blast furnace goes out the formula 3 of main iron runner pouring material, comprise the component of following parts by weight: 8-5mm mono-chromium nitride: 11 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 15 parts, 1-0mm yellow ultramarine: 14 parts, inclined clay powder 3 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 3 parts, ρ aluminum oxide, alumina powder 3 parts, 1 part, molybdic oxide powder; Magnesium oxide iron powder 2 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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Large blast furnace goes out formula 4,8-5mm mono-chromium nitride of main iron runner pouring material: 13 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 14 parts, 1-0mm yellow ultramarine: 15 parts, inclined clay powder 3 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 1 part, ρ aluminum oxide, alumina powder 3 parts, 0 part, molybdic oxide powder; Magnesium oxide iron powder 1 part, electric smelting pure calcium aluminate cement 4 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.18 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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Embodiment one
Formula 1 is used to prepare main trough of blast furnace: prepare burden by formula 1 and stir at stirrer, the outer cleaning water adding above-mentioned total amount 3-8% again, after stirring, in the mould installed in the main iron hook that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains main trough of blast furnace.
Embodiment two
Main trough of blast furnace is prepared: prepare burden by formula 2 and stir at stirrer with formula 2, the outer cleaning water adding above-mentioned total amount 3-8% again, after stirring, in the mould installed in the main iron hook that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains main trough of blast furnace.
Embodiment three
Main trough of blast furnace is prepared: prepare burden by formula 3 and stir at stirrer with formula 3, the outer cleaning water adding above-mentioned total amount 3-8% again, after stirring, in the mould installed in the main iron hook that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains main trough of blast furnace.
Embodiment four
Main trough of blast furnace is prepared: prepare burden by formula 4 and stir at stirrer with formula 4, the outer cleaning water adding above-mentioned total amount 3-8% again, after stirring, in the mould installed in the main iron hook that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains main trough of blast furnace.
Comparative example: by the used iron runner castable of Hebei steel enterprise company all the people present blast furnace, carry out performance comparison with iron runner castable of the present invention; The use properties detected result of above-described embodiment 1 ~ 4 and comparative example the results are shown in following table.Because condition is limited, anti-thermal shock experiment has carried out 30 times in laboratory, terminates thermal shock experiment; Get the slag of corresponding blast furnace, carry out rotary slag-resistance experiment in laboratory, experimental standard, with reference to smelting mark; One time iron influx refers to the iron influx not doing to repair, and an iron influx is corresponding same blast furnace, and product of the present invention carries out comparing of actual iron influx with the product of the current use of blast furnace.Because each blast furnace factor is many, this experiment comparing only at same seat blast furnace current use product and product of the present invention.As can be seen from the results, each aspect of the present invention performance and result of use are far superior to the product of the current use of client.
Specific targets see the following form
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; those skilled in the art can make to the present embodiment the amendment not having creative contribution as required after reading this specification sheets, as long as but be all subject to the protection of patent law in right of the present invention.
Claims (9)
1. a large blast furnace main iron runner pouring material, described mould material comprises major ingredient and admixture, wherein the component of major ingredient is made up of the component of following parts by weight: 8-5mm mono-chromium nitride: 5-8 part, 5-3mm mono-chromium nitride: 15-20 part, 3-1mm sillimanite: 10-15 part, 1-0mm yellow ultramarine: 8-15 part, inclined clay powder 2-5 part, cobalt oxide aluminium powder: 3-7 part, cutting powder: 5-10 part, amorphous graphite powder 3-8 part; Compound powdered carbon 1-2 part; Molybdic oxide powder 0-3 part; Alumina powder 3-5 part, magnesium oxide iron powder 1-5 part, ρ aluminum oxide 1-3 part, electric smelting pure calcium aluminate cement 0-5 part; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.1-0.2 part, nanometer mealy potato 0.01-0.05 part, oxysuccinic acid 0.01 part, C
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2. a kind of large blast furnace main iron runner pouring material according to claim 1, it is characterized in that: described inclined clay powder reaches the substance A of more than 60% for first clay obtains weight ratio shared by the composition of metakaolin after Overheating Treatment, substance A mixes by weight 8.5:1.2:0.3 with white garnet, dextrin, is inclined clay powder.
3. a kind of large blast furnace main iron runner pouring material according to claim 1, is characterized in that: described cutting powder is the cutting powder cutting silicon single crystal generation in monocrystalline silicon production process, and described main component is SiC50-70%, elemental silicon 30-50%.
4. a kind of large blast furnace main iron runner pouring material according to claim 1, is characterized in that: described compound powdered carbon is hard charcoal, sugar charcoal, the mixture of pitch coke weight ratio 1:2:7.
5. a kind of large blast furnace main iron runner pouring material according to claim 1, is characterized in that: described cutting powder is the cutting powder cutting silicon single crystal generation in monocrystalline silicon production process, and described main component is SiC50-70%, elemental silicon 30-50%.
6. a kind of large blast furnace main iron runner pouring material according to claim 1, the weight part of described mould material consists of: 8-5mm mono-chromium nitride: 8 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 12 parts, 1-0mm yellow ultramarine: 15 parts, inclined clay powder 5 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 2 parts, ρ aluminum oxide, alumina powder 3 parts, 2 parts, molybdic oxide powder; Magnesium oxide iron powder 4 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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7. a kind of large blast furnace main iron runner pouring material according to claim 1, the weight part of described mould material consists of: 8-5mm mono-chromium nitride: 10 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 15 parts, 1-0mm yellow ultramarine: 14 parts, inclined clay powder 4 parts, cobalt oxide aluminium powder: 6 parts, cutting powder: 9 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 2 parts, ρ aluminum oxide, alumina powder 3 parts, 2 parts, molybdic oxide powder; Magnesium oxide iron powder 3 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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8. a kind of large blast furnace main iron runner pouring material according to claim 1, the weight part of described mould material consists of: 8-5mm mono-chromium nitride: 11 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 15 parts, 1-0mm yellow ultramarine: 14 parts, inclined clay powder 3 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 3 parts, ρ aluminum oxide, alumina powder 3 parts, 1 part, molybdic oxide powder; Magnesium oxide iron powder 2 parts, electric smelting pure calcium aluminate cement 2 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.16 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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9. a kind of large blast furnace main iron runner pouring material according to claim 1, the weight part of described mould material consists of: 8-5mm mono-chromium nitride: 13 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 14 parts, 1-0mm yellow ultramarine: 15 parts, inclined clay powder 3 parts, cobalt oxide aluminium powder: 7 parts, cutting powder: 10 parts, 8 parts, amorphous graphite powder; Compound powdered carbon 2 parts; 1 part, ρ aluminum oxide, alumina powder 3 parts, 0 part, molybdic oxide powder; Magnesium oxide iron powder 1 part, electric smelting pure calcium aluminate cement 4 parts; Admixture is 100% by above-mentioned major ingredient gross weight number, and the parts by weight of admixture are: calcium lignin sulphonate 0.18 part, nanometer mealy potato 0.05 part, oxysuccinic acid 0.01 part, C
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| CN201510735443.XA CN105152669A (en) | 2015-11-03 | 2015-11-03 | Large blast furnace main iron runner castable |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105948773A (en) * | 2016-06-30 | 2016-09-21 | 张婷 | Casting material for calcining kiln |
| CN105967708A (en) * | 2016-06-30 | 2016-09-28 | 万燕杰 | Special castable for preheaters of rotary kilns |
| CN105985124A (en) * | 2016-06-30 | 2016-10-05 | 万燕杰 | Special castable for large-scale cement kiln flashboards |
| CN105985123A (en) * | 2016-06-30 | 2016-10-05 | 万燕杰 | Special castable for flashboards |
| CN106045537A (en) * | 2016-06-30 | 2016-10-26 | 万燕杰 | Special castable for large-size rotary kiln preheaters |
| CN106045545A (en) * | 2016-08-01 | 2016-10-26 | 张婷 | Castable for industrial kiln |
| CN106083104A (en) * | 2016-06-30 | 2016-11-09 | 万燕杰 | A kind of small-sized preheating in rotary kiln device dedicated pouring material |
| CN106083101A (en) * | 2016-06-30 | 2016-11-09 | 万燕杰 | A kind of alkaline-resisting dedicated pouring material |
| CN106083099A (en) * | 2016-06-30 | 2016-11-09 | 万燕杰 | A kind of rotary medium kiln preheater dedicated pouring material |
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| CN101298391A (en) * | 2008-07-01 | 2008-11-05 | 江西恒大高新技术股份有限公司 | Rapid heating wear resistant material for circulating fluid bed boiler and preparation thereof |
| CN102040386A (en) * | 2010-11-01 | 2011-05-04 | 濮阳濮耐高温材料（集团）股份有限公司 | Torpedo can spouting material and spouting method thereof |
| CN102775166A (en) * | 2012-07-30 | 2012-11-14 | 浙江锦诚耐火材料有限公司 | Blast furnace main iron channel castable |
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| CN101240125A (en) * | 2008-02-04 | 2008-08-13 | 洛阳科耐高温材料有限公司 | High-temperature wearable composite dope for electric power boiler flue |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948773A (en) * | 2016-06-30 | 2016-09-21 | 张婷 | Casting material for calcining kiln |
| CN105967708A (en) * | 2016-06-30 | 2016-09-28 | 万燕杰 | Special castable for preheaters of rotary kilns |
| CN105985124A (en) * | 2016-06-30 | 2016-10-05 | 万燕杰 | Special castable for large-scale cement kiln flashboards |
| CN105985123A (en) * | 2016-06-30 | 2016-10-05 | 万燕杰 | Special castable for flashboards |
| CN106045537A (en) * | 2016-06-30 | 2016-10-26 | 万燕杰 | Special castable for large-size rotary kiln preheaters |
| CN106083104A (en) * | 2016-06-30 | 2016-11-09 | 万燕杰 | A kind of small-sized preheating in rotary kiln device dedicated pouring material |
| CN106083101A (en) * | 2016-06-30 | 2016-11-09 | 万燕杰 | A kind of alkaline-resisting dedicated pouring material |
| CN106083099A (en) * | 2016-06-30 | 2016-11-09 | 万燕杰 | A kind of rotary medium kiln preheater dedicated pouring material |
| CN106045545A (en) * | 2016-08-01 | 2016-10-26 | 张婷 | Castable for industrial kiln |
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Application publication date: 20151216 |
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