CN105272302A - Casting material for 800m<3> blast-furnace branch iron trough - Google Patents
Casting material for 800m<3> blast-furnace branch iron trough Download PDFInfo
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- CN105272302A CN105272302A CN201510735388.4A CN201510735388A CN105272302A CN 105272302 A CN105272302 A CN 105272302A CN 201510735388 A CN201510735388 A CN 201510735388A CN 105272302 A CN105272302 A CN 105272302A
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Abstract
The invention relates to a casting material for a 800m<3> blast-furnace branch iron trough. The casting material comprises a main material and an additive, wherein the main material comprises the following components in parts by weight: 5-8 parts of 8-5mm magnesium silicate, 15-20 parts of 5-3mm chromium nitride, 10-15 parts of 3-1mm sillimanite, 8-15 parts of 1-0mm calcium chromite, 2-5 parts of slightly-viscous clay powder, 3-7 parts of cobalt-aluminum oxide powder, 5-10 parts of cutting powder, 3-8 parts of amorphous graphite powder, 1-2 parts of compound carbon powder, 0-3 parts of molybdenum trioxide powder, 3-5 parts of aluminium oxide micropowder, 1-5 parts of magnesium-iron oxide powder, 1-3 parts of Rho aluminium oxide and 0-5 parts of electrically-smelted pure calcium aluminate cement; the additive comprises the following components in parts by weight according to the total weight part 100% of the main material: 0.1-0.2 part of calcium lignosulphonate, 0.01-0.05 part of nano potato powder, 0.01 part of malic acid and 0.1 part of C12H14N4O5S2. The blast-furnace iron trough prepared by the casting material has the characteristics of good thermal shock resistance, strong anti-erosion performance, large iron influx and long service life.
Description
Technical field
The present invention relates to a kind of 800m3 blast furnace and prop up iron runner castable, belong to metallurgy fire resisting material field.
Background technology
Existing iron runner castable is mostly Al2O3-SiC-C matter mould material, but common Al2O3-SiC-C matter is propped up iron runner castable and used 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 an iron runner requires that the demand that disposable iron influx is large is also more and more urgent, but an iron runner is because resistance to fouling is poor at present, heat-shock resistance is poor, has occurred thermal spalling and structure spalling, is iron runner life-span short major reason.
CN102101782A discloses a kind of iron runner castable, 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, an iron runner repairing work frequency is increased substantially, produces to blast furnace stability and safety and bring larger hidden danger, in addition, colloidal sol is large as bonding agent viscosity, not easily construct, cost is higher, 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, and a kind of blast furnace of long service life props up iron runner castable.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of 800m
3blast furnace props up iron runner castable, 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 Magnesium Silicate q-agent: 5-8 part, 5-3mm mono-chromium nitride: 15-20 part, 3-1mm sillimanite: 10-15 part, 1-0mm chromous acid calcium: 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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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 Magnesium Silicate q-agent: 8 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 12 parts, 1-0mm chromous acid calcium: 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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Preferential, the weight part of described mould material consists of: 8-5mm Magnesium Silicate q-agent: 10 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 15 parts, 1-0mm chromous acid calcium: 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 Magnesium Silicate q-agent: 11 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 15 parts, 1-0mm chromous acid calcium: 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 Magnesium Silicate q-agent: 13 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 14 parts, 1-0mm chromous acid calcium: 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 chromous acid calcium 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, an iron runner 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 iron runner, 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
800m
3blast furnace props up the formula 1 of iron runner castable, comprises the component of following parts by weight: 8-5mm Magnesium Silicate q-agent: 8 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 12 parts, 1-0mm chromous acid calcium: 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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800m
3blast furnace props up the formula 2 of iron runner castable, comprises the component of following parts by weight: 8-5mm Magnesium Silicate q-agent: 10 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 15 parts, 1-0mm chromous acid calcium: 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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800m
3blast furnace goes out the formula 3 of an iron runner castable, comprise the component of following parts by weight: 8-5mm Magnesium Silicate q-agent: 11 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 15 parts, 1-0mm chromous acid calcium: 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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800m
3blast furnace goes out formula 4, the 8-5mm Magnesium Silicate q-agent of an iron runner castable: 13 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 14 parts, 1-0mm chromous acid calcium: 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
Use formula 1 to prepare blast furnace and prop up iron runner: 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 iron runner that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains blast furnace and props up iron runner.
Embodiment two
Prepare blast furnace with formula 2 and prop up iron runner: prepare burden by formula 2 and stir at stirrer, the outer cleaning water adding above-mentioned total amount 3-8% again, after stirring, in the mould installed in the iron runner that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains blast furnace and props up iron runner.
Embodiment three
Prepare blast furnace with formula 3 and prop up iron runner: prepare burden by formula 3 and stir at stirrer, the outer cleaning water adding above-mentioned total amount 3-8% again, after stirring, in the mould installed in the iron runner that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains blast furnace and props up iron runner.
Embodiment four
Prepare blast furnace with formula 4 and prop up iron runner: prepare burden by formula 4 and stir at stirrer, the outer cleaning water adding above-mentioned total amount 3-8% again, after stirring, in the mould installed in the iron runner that molten iron flows through, add mould material, the natural curing demoulding in 1 hour obtains blast furnace and props up iron runner.
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 800m3 blast furnace props up iron runner castable, 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 Magnesium Silicate q-agent: 5-8 part, 5-3mm mono-chromium nitride: 15-20 part, 3-1mm sillimanite: 10-15 part, 1-0mm chromous acid calcium: 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 800m3 blast furnace according to claim 1 props up iron runner castable, 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 800m3 blast furnace according to claim 1 props up iron runner castable, it 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 800m3 blast furnace according to claim 1 props up iron runner castable, it 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 800m3 blast furnace according to claim 1 props up iron runner castable, it 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 800m3 blast furnace according to claim 1 props up iron runner castable, the weight part of described mould material consists of: 8-5mm Magnesium Silicate q-agent: 8 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 12 parts, 1-0mm chromous acid calcium: 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 800m3 blast furnace according to claim 1 props up iron runner castable, the weight part of described mould material consists of: 8-5mm Magnesium Silicate q-agent: 10 parts, 5-3mm mono-chromium nitride: 20 parts, 3-1mm sillimanite: 15 parts, 1-0mm chromous acid calcium: 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 800m3 blast furnace according to claim 1 props up iron runner castable, the weight part of described mould material consists of: 8-5mm Magnesium Silicate q-agent: 11 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 15 parts, 1-0mm chromous acid calcium: 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 800m3 blast furnace according to claim 1 props up iron runner castable, the weight part of described mould material consists of: 8-5mm Magnesium Silicate q-agent: 13 parts, 5-3mm mono-chromium nitride: 19 parts, 3-1mm sillimanite: 14 parts, 1-0mm chromous acid calcium: 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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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510735388.4A CN105272302A (en) | 2015-11-03 | 2015-11-03 | Casting material for 800m<3> blast-furnace branch iron trough |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510735388.4A CN105272302A (en) | 2015-11-03 | 2015-11-03 | Casting material for 800m<3> blast-furnace branch iron trough |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100160142A1 (en) * | 2008-12-18 | 2010-06-24 | North American Refractories Company | Refractory brick for steel ladles |
| 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 |
| CN103771888A (en) * | 2014-02-16 | 2014-05-07 | 徐梅子 | Special castable for 2500D/T kiln eye |
| CN104355630A (en) * | 2014-10-21 | 2015-02-18 | 郑州安耐克实业有限公司 | Wear-resistant and thermal shock-resistant lining for air supply branch pipe of iron-making blast furnace and preparation method thereof |
-
2015
- 2015-11-03 CN CN201510735388.4A patent/CN105272302A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100160142A1 (en) * | 2008-12-18 | 2010-06-24 | North American Refractories Company | Refractory brick for steel ladles |
| 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 |
| CN103771888A (en) * | 2014-02-16 | 2014-05-07 | 徐梅子 | Special castable for 2500D/T kiln eye |
| CN104355630A (en) * | 2014-10-21 | 2015-02-18 | 郑州安耐克实业有限公司 | Wear-resistant and thermal shock-resistant lining for air supply branch pipe of iron-making blast furnace and preparation method thereof |
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