CN105198467A - Castable for main iron trough - Google Patents
Castable for main iron trough Download PDFInfo
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- CN105198467A CN105198467A CN201510735468.XA CN201510735468A CN105198467A CN 105198467 A CN105198467 A CN 105198467A CN 201510735468 A CN201510735468 A CN 201510735468A CN 105198467 A CN105198467 A CN 105198467A
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Abstract
The invention relates to a castable for a main iron trough. The castable comprises a main material and an additive, wherein the main material comprises components in parts by weight as follows: 5-8 parts of 10-5mm magnesium titanate, 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 chromite, 2-5 parts of 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 carbon powder, 0-3 parts of molybdenum trioxide powder, 3-5 parts of alumina micropowder, 1-5 parts of magnesium oxide iron powder, 1-3 parts of rho aluminum oxide and 1-5 parts of fused calcium aluminate cement; the additive comprises, in parts by weight, 0.1-0.2 parts of calcium lignosulfonate, 0.01-0.05 parts of nano potato powder, 0.01 parts of malic acid and 0.1 parts of C12H14N4O5S2 on the basis that the parts of the main material by weight adds up to 100%. The blast furnace iron trough prepared with the castable has the characteristics of good thermal shock resistance, high corrosion resistance, large iron influx and long service life.
Description
Technical field
The present invention relates to a kind of main iron runner pouring material, belong to metallurgy fire resisting material field.
Background technology
Existing main iron runner pouring material is mostly Al
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3-SiC-C matter mould material, but common Al
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3-SiC-C matter iron runner castable 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 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, iron runner repairing work frequency is increased substantially, produces to blast furnace stability and safety and bring larger hidden danger, in addition, dissolved adhesiveness is larger, price is also more expensive, and not easily constructs, and 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 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: 10-5mm magnesium titanate: 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 1-5 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: 10-5mm magnesium titanate: 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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20.1 part.
Preferential, the weight part of described mould material consists of: 10-5mm magnesium titanate: 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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20.1 part.
Preferential, the weight part of described mould material consists of 10-5mm magnesium titanate: 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: 10-5mm magnesium titanate: 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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20.1 part.
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, 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 main iron runner pouring material, comprises the component of following parts by weight: 10-5mm magnesium titanate: 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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20.1 part.
The formula 2 of main iron runner pouring material, comprises the component 10-5mm magnesium titanate of following parts by weight: 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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20.1 part.
The formula 3 of main iron runner pouring material, comprises the component of following parts by weight: 10-5mm magnesium titanate: 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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20.1 part.
Formula 4, the 10-5mm magnesium titanate of main iron runner pouring material: 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
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 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: 10-5mm magnesium titanate: 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 1-5 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 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 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 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 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 main iron runner pouring material according to claim 1, the weight part of described mould material consists of: 10-5mm magnesium titanate: 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 main iron runner pouring material according to claim 1, the weight part of described mould material consists of: 10-5mm magnesium titanate: 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 main iron runner pouring material according to claim 1, the weight part of described mould material consists of: 10-5mm magnesium titanate: 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 main iron runner pouring material according to claim 1, the weight part of described mould material consists of: 10-5mm magnesium titanate: 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 |
|---|---|---|---|
| CN201510735468.XA CN105198467A (en) | 2015-11-03 | 2015-11-03 | Castable for main iron trough |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510735468.XA CN105198467A (en) | 2015-11-03 | 2015-11-03 | Castable for main iron trough |
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| Publication Number | Publication Date |
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| CN105198467A true CN105198467A (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510735468.XA Pending CN105198467A (en) | 2015-11-03 | 2015-11-03 | Castable for main iron trough |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423221A (en) * | 2020-03-16 | 2020-07-17 | 宝武装备智能科技有限公司 | Castable for rotary hearth furnace working layer and preparation method thereof |
-
2015
- 2015-11-03 CN CN201510735468.XA patent/CN105198467A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423221A (en) * | 2020-03-16 | 2020-07-17 | 宝武装备智能科技有限公司 | Castable for rotary hearth furnace working layer and preparation method thereof |
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Application publication date: 20151230 |
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