CN106699201A - Castable for steel making tundish slag dam - Google Patents
Castable for steel making tundish slag dam Download PDFInfo
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- CN106699201A CN106699201A CN201611145650.0A CN201611145650A CN106699201A CN 106699201 A CN106699201 A CN 106699201A CN 201611145650 A CN201611145650 A CN 201611145650A CN 106699201 A CN106699201 A CN 106699201A
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- slag wall
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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Abstract
The invention belongs to the technical field of refractory materials, and particularly relates to a castable for a steel making tundish slag dam. The castable for a steel making tundish slag dam is prepared by mixing the following raw materials in percentage by weight: 50-70% of waste magnesia carbon brick, 20-30% of middle-grade magnesia, 2-5% of silicon micropowder, 5-8% of aluminum micropowder, 2-5% of silicon carbide and 1-2% of stainless steel fiber. Compared with the manner of directly using fused magnesia aggregate in the same industry, the waste magnesia carbon bricks are used as the main raw material among the raw materials for preparing the castable in the invention, thereby greatly lowering the production cost under the condition of ensuring that performance indices of a slag dam satisfy operating requirements.
Description
Technical field
The invention belongs to technical field of refractory materials, and in particular to one kind steel-making tundish slag wall castable.
Background technology
After 20 century 70s, the continuous casting process of steel steel-making enterprise is rapidly developed, and is characterized in process speed
Degree is fast, and investment is concentrated, and technology is gradually improved.Whole world continuous casting ratio is only 5.6% within 1970, and to nineteen ninety global continuous casting
62.4% is reached than, the continuous casting ratio of some industrially developed country has exceeded 95%.Many steel mills are real in the world in recent years
Sequence casting production is showed.Compared with traditional steel-making die casting process, continuous casting has raising recovery rate of iron and reduces energy ezpenditure
Superiority, and the consumption for reducing metals resources and energy meets sustainable development requirement.The realization of sequence casting makes steel-making
Production process simplifies, and flow shortens, and production efficiency is significantly improved.
Tundish is the intermediate link of STEELMAKING PRODUCTION flow, and is the connecting points that continuous operation is turned to by intermittently operated.
Tundish is the important ring for improving output of steel and quality as metallurgical reaction.No matter being smoothed out for continuous casting operation,
Or for ensureing that molten steel quality suits the requirements, the effect of tundish is very important.Because bakie working lining directly with
Steel contacts, it is desirable to which bakie working lining can reduce the field trash in molten steel, the degree of purity of raising molten steel, and resistance to molten steel and melt
The erosion of slag, makes the time of continuous-casting steel pouring as long as possible, and tundish easily disintegrates after using, and reduces labour intensity.
Slag blocking wall is the prefabricated component being made of castable refractory, and it prolongs across whole tundish width from the centre portion of wrapping
Extend away from tundish bottom certain distance, molten steel can flow through from below.Slag blocking wall is the important composition composition of continuous casting production,
It can change flow regime of the molten steel in tundish, residence time of the extension molten steel in tundish, promote the folder in molten steel
Slag thing floats and discharges.When in use, molten steel is flowed into tundish from ladle, tundish two is flowed to through flow straightener, by slag blocking wall
Stopped.In this course, slag blocking wall is directly by the violent scour of high-temperature molten steel, while molten steel is in flow process, steel
Water is separated with slag, and molten steel is flowed away from slag blocking wall lower section, and slag is swum on molten steel, is directly contacted with slag blocking wall slag line area.Cause
This slag blocking wall slag line region is washed away by molten steel and corrodes the most serious with slag.It was verified that slag blocking wall slag line region is whole gear
The weak link of slag wall internal structure, is etched that damage is the most serious in the slag blocking wall after, slag blocking wall slag line region it is anti-
Erosiveness has directly influence on the service life of slag blocking wall.
But existing slag blocking wall has the shortcomings that production cost is high, slag resistance is poor, the life-span is shorter, the present invention wants to carry
For a kind of preferably steel-making tundish slag wall castable.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of steel-making tundish slag wall castable.In the middle of the steel-making
Bag slag blocking wall castable, is mixed by the raw material of following percentage by weight：Waste magnesia carbon brick 50~70%, medium-grade magnesite 20~
30%th, silicon powder 2~5%, aluminium micro mist 5~8%, carborundum 2~5%, stainless steel fibre 1~2%.
Preferably, above-mentioned steel-making tundish slag wall castable, the waste magnesia carbon brick is by 1mm≤granularity≤3mm, 3mm
＜ granularities≤5mm, 5mm ＜ granularities≤tri- kinds of 8mm specifications composition.
As preferred scheme of the invention, above-mentioned steel-making tundish slag wall castable, by following percentage by weight
Raw material is mixed：1mm≤granularity≤3mm waste magnesia carbon bricks 10~20%, 3mm ＜ granularities≤5mm waste magnesia carbon bricks 20~25%,
5mm ＜ granularities≤8mm waste magnesia carbon bricks 20~25%, medium-grade magnesite 20~30%, silicon powder 2~5%, aluminium micro mist 5~8%, carbon
SiClx 2~5%, stainless steel fibre 1~2%.
Preferably, above-mentioned steel-making tundish slag wall castable, TFe≤1.4% contained by the waste magnesia carbon brick.
Preferably, above-mentioned steel-making tundish slag wall castable, the waste magnesia carbon brick key component is MgO >=60%, C
>=12%, SiO2≤ 1.2%.
Preferably, above-mentioned steel-making tundish slag wall castable, medium-grade magnesite main component MgO >=90%.
Preferably, above-mentioned steel-making tundish slag wall castable, the silicon powder main component SiO2>=94%.
Preferably, above-mentioned steel-making tundish slag wall castable, the aluminium micro mist main component Al2O3>=99%.
Preferably, above-mentioned steel-making tundish slag wall castable, carborundum main component SiC >=94%.
The present invention uses the waste magnesia carbon brick for reclaiming that steel-making tundish slag wall castable, fully profit are prepared for primary raw material
Discarded secondary resource is used, production cost reduction by more than 30% serves good environmental benefit；Meanwhile, slag blocking wall of the invention
Compared with being directly main aggregate using fused magnesite in the same industry, its slag resistance and life-span also increase.
Specific embodiment
For the defect existing for existing tundish slag wall castable, the present inventor takes full advantage of secondary resource and gives up
Magnesia carbon brick, so that there is provided a kind of new steel-making tundish slag wall castable, the castable is by following percentage by weight
Raw material is mixed：Waste magnesia carbon brick 50~70%, medium-grade magnesite 20~30%, silicon powder 2~5%, aluminium micro mist 5~8%, carbonization
Silicon 2~5%, stainless steel fibre 1~2%.
Further, inventor had found in order that slag blocking wall has more preferable effect, need to be controlled to waste magnesia carbon brick following
Three kinds of size specifications：1mm≤granularity≤3mm, 3mm ＜ granularities≤5mm, 5mm ＜ granularities≤8mm.Also, three kinds of size specifications
Waste magnesia carbon brick must reasonably coordinate and can make the slag blocking wall various aspects of performance for preparing more preferably, it is advantageous to, should
Steel-making tundish slag wall castable, is mixed by the raw material of following percentage by weight：The useless magnesium carbon of 1mm≤granularity≤3mm
It is brick 10~20%, 3mm ＜ granularities≤5mm waste magnesia carbon bricks 20~25%, 5mm ＜ granularities≤8mm waste magnesia carbon bricks 20~25%, middle-grade
Magnesia 20~30%, silicon powder 2~5%, aluminium micro mist 5~8%, carborundum 2~5%, stainless steel fibre 1~2%.
Further, because the presence of iron can influence the performance of slag blocking wall, so the waste magnesia carbon brick for using is needed in selection
The removal of slag iron part will be contained, the iron compound that need to be wherein mingled with by the removal of magnetic separation operation when each grade is processed into, final control
TFe≤1.4% contained by waste magnesia carbon brick processed.
Further, the waste magnesia carbon brick key component is MgO >=60%, C >=12%, SiO2≤ 1.2%.It is described middle-grade
Magnesia main component MgO >=90%.The silicon powder main component SiO2>=94%.The aluminium micro mist main component Al2O3≥
99%.Carborundum main component SiC >=94%.
In product of the present invention, the component content of each raw material represents percentage by weight.
Present invention steel-making tundish slag wall is prepared with castable slag blocking wall preparation method using conventional method, substantially technique
Flow is：Raw material selection-dispensing-mixer stirring-packaging-shipping use scene-stirring-vibration moulding-baking-
Use.
Illustrated below by way of specific description of embodiments of the present invention but do not limit the present invention.
Embodiment 1
Steel-making tundish slag wall castable, is mixed by following percentage by weight raw material：1mm≤granularity≤3mm
Waste magnesia carbon brick 15%, 3mm ＜ granularities≤5mm waste magnesia carbon bricks 20%, 5mm ＜ granularities≤8mm waste magnesia carbon bricks 25%, medium-grade magnesite
27%th, silicon powder 3%, aluminium micro mist 5%, carborundum 4%, stainless steel fibre 1%；
The above-mentioned castable for mixing prepares slag blocking wall using conventional method.
During tundish use, temperature in use is up to more than 1500 DEG C, use time for the present embodiment gained slag blocking wall
More than 600min, price is low compared with like product by 30%.
Properties of product：110 DEG C of bulk densities are more than 2.6g/cm3, 110 DEG C of drying compressive resistances are more than 40Mpa, 1500 DEG C
Under the conditions of insulation 3 hours after compressive resistance be more than 80Mpa；110 DEG C of drying rupture strengths are more than 6Mpa, are incubated under the conditions of 1500 DEG C
Rupture strength is more than 8Mpa after 3 hours, and refractoriness is more than 1790 DEG C.
Each performance indications detection method of the present embodiment is with reference to GBJ107-87.
Embodiment 2
Steel-making tundish slag wall castable, is mixed by following percentage by weight raw material：1mm≤granularity≤3mm
Waste magnesia carbon brick 20%, 3mm ＜ granularities≤5mm waste magnesia carbon bricks 20%, 5mm ＜ granularities≤8mm waste magnesia carbon bricks 20%, medium-grade magnesite
25%th, silicon powder 3%, aluminium micro mist 6%, carborundum 5%, stainless steel fibre 1%；
During tundish use, temperature in use is up to more than 1500 DEG C, use time for the present embodiment gained slag blocking wall
More than 600min, price is low compared with like product by 30%.
Properties of product：110 DEG C of bulk densities are more than 2.7g/cm3, 110 DEG C of drying compressive resistances are more than 45Mpa, 1500 DEG C
Under the conditions of insulation 3 hours after compressive resistance be more than 88Mpa；110 DEG C of drying rupture strengths are more than 5.5Mpa, are protected under the conditions of 1500 DEG C
Rupture strength is more than 10Mpa after warm 3 hours, and refractoriness is more than 1790 DEG C.
Each performance indications detection method of the present embodiment is with reference to GBJ107-87.
Embodiment 3
Steel-making tundish slag wall castable, is mixed by following percentage by weight raw material：1mm≤granularity≤3mm
Waste magnesia carbon brick 18%, 3mm ＜ granularities≤5mm waste magnesia carbon bricks 22%, 5mm ＜ granularities≤8mm waste magnesia carbon bricks 25%, medium-grade magnesite
23%th, silicon powder 2%, aluminium micro mist 5%, carborundum 4%, stainless steel fibre 1%；
During tundish use, temperature in use is up to more than 1500 DEG C, use time for the present embodiment gained slag blocking wall
More than 600min, price is low compared with like product by 30%.
Properties of product：110 DEG C of bulk densities are more than 2.65g/cm3, 110 DEG C of drying compressive resistances are more than 44Mpa, 1500 DEG C
Under the conditions of insulation 3 hours after compressive resistance be more than 90Mpa；110 DEG C of drying rupture strengths are more than 7Mpa, are incubated under the conditions of 1500 DEG C
Rupture strength is more than 9Mpa after 3 hours, and refractoriness is more than 1790 DEG C.
Each performance indications detection method of the present embodiment is with reference to GBJ107-87.
Claims (9)
1. tundish slag wall castable is made steel, it is characterised in that：Mixed by the raw material of following percentage by weight：Useless magnesium
Carbon brick 50~70%, medium-grade magnesite 20~30%, silicon powder 2~5%, aluminium micro mist 5~8%, carborundum 2~5%, stainless steel are fine
Dimension 1~2%.
It is 2. according to claim 1 to make steel tundish slag wall castable, it is characterised in that：The waste magnesia carbon brick by
1mm≤granularity≤3mm, 3mm ＜ granularities≤5mm, 5mm ＜ granularities≤tri- kinds of 8mm specifications composition.
It is 3. according to claim 2 to make steel tundish slag wall castable, it is characterised in that：By following percentage by weight
Raw material mix：1mm≤granularity≤3mm waste magnesia carbon bricks 10~20%, 3mm ＜ granularities≤5mm waste magnesia carbon bricks 20~25%,
5mm ＜ granularities≤8mm waste magnesia carbon bricks 20~25%, medium-grade magnesite 20~30%, silicon powder 2~5%, aluminium micro mist 5~8%, carbon
SiClx 2~5%, stainless steel fibre 1~2%.
4. the steel-making tundish slag wall castable according to any one of claims 1 to 3, it is characterised in that：It is described useless
TFe≤1.4% contained by magnesia carbon brick.
5. the steel-making tundish slag wall castable according to any one of Claims 1 to 4, it is characterised in that：It is described useless
Magnesia carbon brick key component is MgO >=60%, C >=12%, SiO2≤ 1.2%.
6. the steel-making tundish slag wall castable according to any one of Claims 1 to 4, it is characterised in that：In described
Shelves magnesia main component MgO >=90%.
7. the steel-making tundish slag wall castable according to any one of Claims 1 to 4, it is characterised in that：The silicon
Micro mist main component SiO2>=94%.
8. the steel-making tundish slag wall castable according to any one of Claims 1 to 4, it is characterised in that：The aluminium
Micro mist main component Al2O3>=99%.
9. the steel-making tundish slag wall castable according to any one of Claims 1 to 4, it is characterised in that：The carbon
SiClx main component SiC >=94%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611145650.0A CN106699201A (en) | 2016-12-13 | 2016-12-13 | Castable for steel making tundish slag dam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611145650.0A CN106699201A (en) | 2016-12-13 | 2016-12-13 | Castable for steel making tundish slag dam |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107892580A (en) * | 2017-12-08 | 2018-04-10 | 攀枝花钢城集团有限公司 | A kind of tundish slag wall castable and its application method |
| CN108907172A (en) * | 2018-08-21 | 2018-11-30 | 北京利尔高温材料股份有限公司 | A kind of long nozzle of compound useless refractory brick slag line broken material |
| CN110511046A (en) * | 2019-09-12 | 2019-11-29 | 马鞍山江润冶金有限责任公司 | A kind of castable refractory and preparation method of continuous casting production pushing off the slag component |
| CN110903077A (en) * | 2019-12-20 | 2020-03-24 | 攀枝花钢城集团有限公司 | Castable for ladle cover of steelmaking tundish |
| CN112457032A (en) * | 2021-01-22 | 2021-03-09 | 北京利尔高温材料股份有限公司 | Tundish pocket brick cup containing reclaimed materials and preparation method thereof |
| CN113860895A (en) * | 2021-11-02 | 2021-12-31 | 江苏嘉耐高温材料股份有限公司 | Circular economy type slag stopping wall and preparation method thereof |
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| CN104987096A (en) * | 2015-07-17 | 2015-10-21 | 莱芜钢铁集团泰东实业有限公司 | Steel ladle edge refractory castable |
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| CN102503496A (en) * | 2011-11-17 | 2012-06-20 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon pouring material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107892580A (en) * | 2017-12-08 | 2018-04-10 | 攀枝花钢城集团有限公司 | A kind of tundish slag wall castable and its application method |
| CN108907172A (en) * | 2018-08-21 | 2018-11-30 | 北京利尔高温材料股份有限公司 | A kind of long nozzle of compound useless refractory brick slag line broken material |
| CN110511046A (en) * | 2019-09-12 | 2019-11-29 | 马鞍山江润冶金有限责任公司 | A kind of castable refractory and preparation method of continuous casting production pushing off the slag component |
| CN110903077A (en) * | 2019-12-20 | 2020-03-24 | 攀枝花钢城集团有限公司 | Castable for ladle cover of steelmaking tundish |
| CN112457032A (en) * | 2021-01-22 | 2021-03-09 | 北京利尔高温材料股份有限公司 | Tundish pocket brick cup containing reclaimed materials and preparation method thereof |
| CN113860895A (en) * | 2021-11-02 | 2021-12-31 | 江苏嘉耐高温材料股份有限公司 | Circular economy type slag stopping wall and preparation method thereof |
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Application publication date: 20170524 |