CN106045530B - Refractory material for blast furnace tapping channel by adopting waste refractory material - Google Patents
Refractory material for blast furnace tapping channel by adopting waste refractory material Download PDFInfo
- Publication number
- CN106045530B CN106045530B CN201610379049.1A CN201610379049A CN106045530B CN 106045530 B CN106045530 B CN 106045530B CN 201610379049 A CN201610379049 A CN 201610379049A CN 106045530 B CN106045530 B CN 106045530B
- Authority
- CN
- China
- Prior art keywords
- parts
- granularity
- aluminum
- refractory material
- silicon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
Abstract
The invention discloses a refractory material for a blast furnace tapping channel, which is made of waste refractory materials, and comprises the following components in parts by mass: 15-25 parts of used sliding plate crushing material with the granularity of 1-3 mm, 30-40 parts of used aluminum-magnesium brick crushing material with the granularity of 1-3 mm, 10-20 parts of brown corundum with the granularity of 0-1 mm, 12-18 parts of silicon carbide with the granularity of 0-1 mm, 3-8 parts of magnesium aluminate spinel, 2-6 parts of modified phenolic resin, 2-5 parts of aluminum-silicon gel powder, 2-5 parts of calcium aluminate cement, 1-3 parts of metal aluminum powder, 1-3 parts of silicon micropowder and 1-2 parts of explosion-proof fiber. By adopting the waste refractory material, the production cost of the refractory material is reduced, the secondary utilization of the waste refractory material is realized, the mineral resources are saved, various pollutions caused by random stacking of the refractory material are reduced, the slag resistance and the pressure resistance of the tapping channel can be improved, and the cyclic utilization of the refractory material is realized.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of refractory materials, in particular to the technical field of refractory materials for a blast furnace tapping channel.
[ background of the invention ]
The refractory material is used as a structural material in high-temperature equipment such as a high-temperature kiln, a high-temperature container or a high-temperature device and the like, and is widely applied to various industries such as metallurgy, cement, glass, petrochemical industry and the like. With the rapid development of economy in China, the amount of consumed refractory materials is rapidly increasing: in 2003, the consumption of the refractory material in China is about 800 ten thousand tons, the consumption of the refractory material after use reaches 300 ten thousand tons, and the consumption of the refractory material in 2008 is more than 400 ten thousand tons. Most of the previous treatment methods of the used refractory materials are regarded as industrial refuse landfills, and only a small amount of the used refractory materials are simply utilized. If the used refractory materials can be effectively recycled, the cost of the refractory materials can be reduced, and the effects of saving mineral resources and reducing environmental pollution can be achieved.
At present, over 400 million tons of used refractory materials are produced in China every year, and besides part of the used refractory materials are simply utilized, most of the used refractory materials are used and buried as industrial garbage, which is a huge resource waste for the nation. Meanwhile, the used refractory material can cause environmental pollution, which is mainly reflected in the following aspects: (1) dust; (2) contamination of asphalt and resin volatiles; (3) radioactivity caused by zirconia feedstock; (4) carcinogenicity of refractory fibers and asbestos; (5) cr (chromium) component+6The carcinogenicity of (1); (7) silicosis due to crystalline silica; (8) the used refractory material occupies the land. With the increasing prominence of the world's environmental problems and the need for sustainable development strategies, there is an increasing interest in the treatment and utilization of various types of waste. If more than 400 million tons of used refractory materials produced in China every year can be fully utilized as secondary resources, a large amount of resources are saved for China, and the refractory materials play an important role in protecting the environmentThe application is as follows. According to the quality of the used refractory material and different treatment methods, the following ways and methods are available for recycling the used refractory material: (1) preference is given to the immediate reuse, i.e. where the immediate use is consumed. For example, the used magnesia carbon bricks and the used sliding plates of the iron and steel plant can be directly used as metallurgical auxiliary materials after being crushed and crushed in the iron and steel plant; (2) the used refractory material is used primarily. Mainly used as a secondary raw material after simple processing such as crushing and the like. If the used magnesia carbon brick is crushed and processed into different particles, the particles are used as part of raw materials to produce the magnesia carbon brick; (3) fine processing into high-quality raw materials, such as re-dust high-quality magnesia carbon bricks and the like; (4) after fine processing and treatment, the material becomes a high-quality material with high added value, such as micro powder production and new material synthesis. By the method, the regeneration utilization rate of the used refractory materials of foreign iron and steel enterprises reaches over 80 percent, and the recovery utilization rate of the used refractory materials of some cement enterprises reaches over 90 percent due to different recovery utilization rates of the used refractory materials of different industries. In conclusion, the used refractory material can be applied to refractory concrete aggregate, slag splashing furnace protection additive, industrial raw materials such as cement and ceramics, abrasive, refractory products of recycled raw materials, and the like.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a refractory material for a blast furnace tapping channel, which adopts waste refractory materials, can reduce the cost of the refractory material, saves mineral resources and reduces environmental pollution.
In order to achieve the purpose, the invention provides a refractory material for a blast furnace tapping channel, which is made of waste refractory materials, and comprises the following components in parts by mass: 15-25 parts of used sliding plate crushing material with the granularity of 1-3 mm, 30-40 parts of used aluminum-magnesium brick crushing material with the granularity of 1-3 mm, 10-20 parts of brown corundum with the granularity of 0-1 mm, 12-18 parts of silicon carbide with the granularity of 0-1 mm, 3-8 parts of magnesium aluminate spinel, 2-6 parts of modified phenolic resin, 2-5 parts of aluminum-silicon gel powder, 2-5 parts of calcium aluminate cement, 1-3 parts of metal aluminum powder, 1-3 parts of silicon micropowder and 1-2 parts of explosion-proof fiber.
Preferably, the mass ratio of each component is as follows: 25 parts of used sliding plate crushed material with the granularity of 1-3 mm, 40 parts of used aluminum-magnesium brick crushed material with the granularity of 1-3 mm, 12 parts of brown corundum with the granularity of 0-1 mm, 10 parts of silicon carbide with the granularity of 0-1 mm, 6 parts of magnesium-aluminum spinel, 4 parts of modified phenolic resin, 3 parts of aluminum-silicon gel powder, 3 parts of calcium aluminate cement, 1.3 parts of metal aluminum powder, 1.1 parts of silicon micropowder and 1 part of explosion-proof fiber.
Preferably, the mass ratio of each component is as follows: 20 parts of used slide plate crushed material with the granularity of 1-3 mm, 35 parts of used aluminum-magnesium brick crushed material with the granularity of 1-3 mm, 20 parts of brown corundum with the granularity of 0-1 mm, 15 parts of silicon carbide with the granularity of 0-1 mm, 8 parts of magnesium aluminate spinel, 5 parts of modified phenolic resin, 2.5 parts of aluminum-silicon gel powder, 2.8 parts of calcium aluminate cement, 1 part of metal aluminum powder, 1.2 parts of silicon micropowder and 1.3 parts of explosion-proof fiber.
Preferably, the mass ratio of each component is as follows: 18 parts of used sliding plate crushed material with the granularity of 1-3 mm, 40 parts of used aluminum-magnesium brick crushed material with the granularity of 1-3 mm, 12 parts of brown corundum with the granularity of 0-1 mm, 18 parts of silicon carbide with the granularity of 0-1 mm, 5 parts of magnesium-aluminum spinel, 5 parts of modified phenolic resin, 4 parts of aluminum-silicon gel powder, 4 parts of calcium aluminate cement, 2 parts of metal aluminum powder, 1.5 parts of silicon micropowder and 2 parts of explosion-proof fiber.
Preferably, the modified phenolic resin is organic silicon modified phenolic resin, the silicon content in the organic silicon modified phenolic resin is 8-12%, the modified phenolic resin has the dual characteristics of organic materials and inorganic materials, and the physicochemical properties of the modified phenolic resin can be kept unchanged in a wide temperature range (minus 60 to plus 1200).
Preferably, the calcium aluminate cement is an ultra-high aluminum type calcium aluminate cement.
Preferably, the explosion-proof fiber is polyvinyl formal fiber, the diameter of the polyvinyl formal fiber is 15um, and the length of the polyvinyl formal fiber is 3-5 mm.
The invention has the beneficial effects that: by adopting the waste refractory material, the production cost of the refractory material is reduced, the secondary utilization of the waste refractory material is realized, the mineral resources are saved, various pollutions caused by random stacking of the refractory material are reduced, the slag resistance and the pressure resistance of the tapping channel can be improved, and the cyclic utilization of the refractory material is realized.
[ detailed description ] embodiments
The first embodiment is as follows:
the refractory material for the blast furnace tapping channel is made of waste refractory materials and comprises the following components in percentage by mass: 25 parts of used sliding plate crushed material with the granularity of 1-3 mm, 40 parts of used aluminum-magnesium brick crushed material with the granularity of 1-3 mm, 12 parts of brown corundum with the granularity of 0-1 mm, 10 parts of silicon carbide with the granularity of 0-1 mm, 6 parts of magnesium-aluminum spinel, 4 parts of modified phenolic resin, 3 parts of aluminum-silicon gel powder, 3 parts of calcium aluminate cement, 1.3 parts of metal aluminum powder, 1.1 parts of silicon micropowder and 1 part of explosion-proof fiber. The embodiment adopts 40 parts of the rear sliding plate crushing material with the granularity of 1-3 mm and the rear aluminum-magnesium brick crushing material with the granularity of 1-3 mm, greatly reduces the production cost of the refractory material for the blast furnace tapping channel, can effectively improve the slag resistance of the refractory material for the blast furnace tapping channel, and can effectively improve the compression resistance and the bending resistance of the refractory material for the blast furnace tapping channel.
Example two:
the refractory material for the blast furnace tapping channel is made of waste refractory materials and comprises the following components in percentage by mass: 20 parts of used slide plate crushed material with the granularity of 1-3 mm, 35 parts of used aluminum-magnesium brick crushed material with the granularity of 1-3 mm, 20 parts of brown corundum with the granularity of 0-1 mm, 15 parts of silicon carbide with the granularity of 0-1 mm, 8 parts of magnesium aluminate spinel, 5 parts of modified phenolic resin, 2.5 parts of aluminum-silicon gel powder, 2.8 parts of calcium aluminate cement, 1 part of metal aluminum powder, 1.2 parts of silicon micropowder and 1.3 parts of explosion-proof fiber. The physical normal temperature performance of the embodiment is better, the content of silicon carbide is improved, and the spalling resistance and molten iron corrosion resistance of the refractory material for the tapping channel are enhanced.
Example three:
the refractory material for the blast furnace tapping channel is made of waste refractory materials and comprises the following components in percentage by mass: 18 parts of used sliding plate crushed material with the granularity of 1-3 mm, 40 parts of used aluminum-magnesium brick crushed material with the granularity of 1-3 mm, 12 parts of brown corundum with the granularity of 0-1 mm, 18 parts of silicon carbide with the granularity of 0-1 mm, 5 parts of magnesium-aluminum spinel, 5 parts of modified phenolic resin, 4 parts of aluminum-silicon gel powder, 4 parts of calcium aluminate cement, 2 parts of metal aluminum powder, 1.5 parts of silicon micropowder and 2 parts of explosion-proof fiber. The embodiment is easy to sinter, and has better oxidation resistance and explosion-proof performance.
The following is a detailed description of the composition, properties and action of the raw materials in the present invention:
crushing material with rear slide plate
The slide plate is a functional fire-resistant material for continuous casting, is used as a switch for controlling the flow rate and the flow velocity of molten steel, is a core component of a slide gate nozzle device, and has extremely strict use conditions. The main raw materials of the aluminum-carbon sliding plate are corundum, high-alumina bauxite and carbon raw materials, and the corundum raw materials are high-grade electro-fused white corundum, tabular corundum and the like. Because the using environment of the sliding plate, the periphery and the surface of the used sliding plate are only corroded or cracked, the chemical and mineral compositions of other materials are not changed, the grade of the internal raw materials is extremely high, the regeneration and utilization values are high, the waste is greatly caused by garbage treatment, the secondary particle raw materials are obtained from the used sliding plate, and the secondary particle raw materials are partially or completely used for replacing high-alumina bauxite raw materials to produce refractory products, so that the resource crisis can be relieved.
Used aluminum-magnesium brick crushing material
The ladle is important equipment for storing, transporting and refining molten steel in the steelmaking process, the alumina-magnesia carbon brick is one of main refractory materials of a working lining, and with the rapid development of the steel industry, the used ladle alumina-magnesia carbon brick causes environmental pollution due to relatively complex composition and large overstock, and how to effectively recycle the used alumina-magnesia carbon brick becomes a focus of attention in the industry. At present, China still has a plurality of 1000m3A small and medium-sized blast furnace with a single tap hole, wherein the refractory material for a tap hole is Al203the-SiC-C baking-free ramming mass or the quick-drying explosion-proof castable is introduced into the used alumina-magnesia-carbon brick, so that the cost is reduced, the resources are saved, and the environmental pollution is reduced.
Brown corundum
Brown corundum, its Al2O394.5-97 percent of the content, high hardness, high toughness and low price, and improves the Al content in the raw material2O3In an amount ofThe slag corrosion resistance of the channel refractory material is obviously improved, and the service life of the channel refractory material is prolonged.
Silicon carbide
The silicon carbide has the characteristics of high temperature resistance (2200 ℃ for decomposition and sublimation) and good chemical stability, and particularly has very high thermal conductivity and low thermal expansion coefficient. And researches show that the silicon carbide has high-temperature strength and strong hot erosion resistance, and is not easy to be wetted by metal melt and resists metal vapor corrosion. In addition, silicon carbide may also function to prevent C from being oxidized. Therefore, the addition of silicon carbide can increase the spalling resistance of the refractory for tapping runners and the erosion resistance of molten iron and slag.
Magnesium aluminate spinel
Al-Mg spinel promoting Al at high temperature by means of reaction activity of light-burned magnesium powder2O3The refractory material is a refractory raw material with excellent performance, has a melting point as high as 2135 ℃, good chemical stability, certain adaptability to acid and alkali, strong FeO slag resistance and good thermal shock resistance, is distributed around particles and in a matrix, and improves the erosion resistance, slag resistance and thermal shock resistance of the refractory material for tapping runners.
Modified phenolic resin
The modified phenolic resin is organic silicon modified phenolic resin, which improves the heat resistance of phenolic resin by using organic silicon monomer to react with phenolic hydroxyl or hydroxymethyl in linear phenolic resin, the organic silicon resin takes Si-O-Si as a main chain, and a cross-linking type semi-inorganic high polymer with organic groups connected to silicon atoms has the dual characteristics of organic and inorganic materials, and can keep the physicochemical properties unchanged in a wide temperature range (-60- + 1200).
Aluminium silicon gel powder
Along with the development of cement-free refractory castable, aluminum-silicon gel powder combined iron runner castable is developed in recent years. The grain size of the high-purity low-agglomeration aluminum-silicon gel powder reaches the nanometer scale, the relative volume of a grain boundary phase can be rapidly increased, and the surface activity is very high. The aluminum-silicon gel powder is combined with the iron runner casting material by sol to generate condensation combination, the combination strength comes from gel, and the gel has good cohesiveness, so that the gel is combined with the casting material at low temperature and has good air permeability, thereby being beneficial to removing moisture, improving the thermal shock resistance of the material and having very good high-temperature performance.
Metal aluminium powder
The metal aluminum powder promotes the rapid sintering of the stemming, and can obviously improve the bending strength and the compressive strength of the stemming. The added metal aluminum powder can also play a role in preventing oxidation, and silicon carbide and carbonaceous raw materials in the refractory material of the tapping channel are protected to a certain extent.
Explosion-proof fiber
The explosion-proof fiber is polyvinyl formal fiber, the melting point of the polyvinyl formal fiber is 65 ℃, the diameter of the polyvinyl formal fiber is 15 micrometers, and the length of the polyvinyl formal fiber is 3-5 mm. When the castable liner body is heated and baked, moisture in the castable is removed and a large amount of water vapor is generated, and particularly for the condensation combined castable, because a large amount of free water is removed in a short temperature range from normal temperature to 100 ℃, the pressure generated by the water vapor is accumulated instantly, and the damage capability to the structure is increased suddenly. After the polyvinyl formal fiber with the melting point of 65 ℃ is added into the casting material, the organic fiber is distributed in disorder in the casting material and is mutually connected in a bridging way, and the organic fiber is shrunk and burned off before a large amount of free water in the casting material is removed, so that the formed exhaust channel can enable water vapor to be rapidly diffused and escaped to the surface layer of the casting material, and the possibility of cracking of the casting material is reduced.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (4)
1. The utility model provides an adopt old and useless refractory material's refractory material for blast furnace tapping channel which characterized in that: the composition comprises the following components in percentage by mass: 15-25 parts of a used slide plate crushing material with the granularity of 1-3 mm, 30-40 parts of a used aluminum magnesium brick crushing material with the granularity of 1-3 mm, 10-20 parts of brown corundum with the granularity of 0-1 mm, 12-18 parts of silicon carbide with the granularity of 0-1 mm, 3-8 parts of magnesium aluminate spinel, 2-6 parts of modified phenolic resin, 2-5 parts of aluminum silicon gel powder, 2-5 parts of calcium aluminate cement, 1-3 parts of metal aluminum powder, 1-3 parts of silicon micropowder and 1-2 parts of explosion-proof fiber, wherein the modified phenolic resin is organic silicon modified phenolic resin, the silicon content in the organic silicon modified phenolic resin is 8-12%, the explosion-proof fiber is polyvinyl formal fiber, the diameter of the polyvinyl formal fiber is 15 mu m, and the length of the polyvinyl formal fiber is 3-5 mm.
2. The refractory for a blast furnace tapping runner using a spent refractory according to claim 1, wherein: the mass ratio of each component is as follows: 20 parts of used slide plate crushed material with the granularity of 1-3 mm, 35 parts of used aluminum-magnesium brick crushed material with the granularity of 1-3 mm, 20 parts of brown corundum with the granularity of 0-1 mm, 15 parts of silicon carbide with the granularity of 0-1 mm, 8 parts of magnesium aluminate spinel, 5 parts of modified phenolic resin, 2.5 parts of aluminum-silicon gel powder, 2.8 parts of calcium aluminate cement, 1 part of metal aluminum powder, 1.2 parts of silicon micropowder and 1.3 parts of explosion-proof fiber.
3. The refractory for a blast furnace tapping runner using a spent refractory according to claim 1, wherein: the mass ratio of each component is as follows: 18 parts of used rear sliding plate crushed material with the particle size of 1-3 mm, 40 parts of used aluminum-magnesium brick crushed material with the particle size of 1-3 mm, 12 parts of brown corundum with the particle size of 0-1 mm, 18 parts of silicon carbide with the particle size of 0-1 mm, 5 parts of magnesium-aluminum spinel, 5 parts of modified phenolic resin, 4 parts of aluminum-silicon gel powder, 4 parts of calcium aluminate cement, 2 parts of metal aluminum powder, 1.5 parts of silicon micropowder and 2 parts of explosion-proof fiber.
4. The refractory for a blast furnace tapping runner using a spent refractory according to claim 1, wherein: the calcium aluminate cement is ultrahigh-aluminum type calcium aluminate cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379049.1A CN106045530B (en) | 2016-05-31 | 2016-05-31 | Refractory material for blast furnace tapping channel by adopting waste refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379049.1A CN106045530B (en) | 2016-05-31 | 2016-05-31 | Refractory material for blast furnace tapping channel by adopting waste refractory material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106045530A CN106045530A (en) | 2016-10-26 |
| CN106045530B true CN106045530B (en) | 2021-01-12 |
Family
ID=57171689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610379049.1A Active CN106045530B (en) | 2016-05-31 | 2016-05-31 | Refractory material for blast furnace tapping channel by adopting waste refractory material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106045530B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978072A (en) * | 2020-08-21 | 2020-11-24 | 浙江锦诚新材料股份有限公司 | Medium frequency induction furnace ramming mass based on magnesia brick reclaimed materials |
| CN112279659B (en) * | 2020-10-28 | 2022-12-09 | 长兴兴鹰新型耐火建材有限公司 | Multi-groove-position stirrer for preparing refractory spray paint |
| CN114477974A (en) * | 2022-01-12 | 2022-05-13 | 安徽瑞泰新材料科技有限公司 | Quick-drying castable for small blast furnace iron runner and preparation method thereof |
| CN115959914A (en) * | 2022-08-04 | 2023-04-14 | 广州飞淘科技发展有限公司 | Refractory material for blast furnace tapping channel by adopting waste refractory material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020022567A1 (en) * | 1998-08-20 | 2002-02-21 | Xiangmin Li | Non-slumping sprayable refractory castables containing thermal black |
| CN102336574A (en) * | 2010-07-27 | 2012-02-01 | 辽宁科技大学 | Method for producing waterless taphole mix for blast furnace from high-alumina waste refractory materials |
| CN102617167A (en) * | 2012-03-31 | 2012-08-01 | 通化市五一环保科技股份有限公司 | Regeneration refractory castable taking used unshaped refractories as main materials |
| CN103539463A (en) * | 2012-07-15 | 2014-01-29 | 山国强 | Low-cost and crusting-resistant pouring material |
| CN104086194A (en) * | 2014-07-14 | 2014-10-08 | 中国京冶工程技术有限公司 | Blast furnace iron tapping trough ramming material and preparation method thereof |
| CN104761268A (en) * | 2015-03-19 | 2015-07-08 | 通达耐火技术股份有限公司 | Homogenized corundum refractory castable and preparation method thereof |
-
2016
- 2016-05-31 CN CN201610379049.1A patent/CN106045530B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020022567A1 (en) * | 1998-08-20 | 2002-02-21 | Xiangmin Li | Non-slumping sprayable refractory castables containing thermal black |
| CN102336574A (en) * | 2010-07-27 | 2012-02-01 | 辽宁科技大学 | Method for producing waterless taphole mix for blast furnace from high-alumina waste refractory materials |
| CN102617167A (en) * | 2012-03-31 | 2012-08-01 | 通化市五一环保科技股份有限公司 | Regeneration refractory castable taking used unshaped refractories as main materials |
| CN103539463A (en) * | 2012-07-15 | 2014-01-29 | 山国强 | Low-cost and crusting-resistant pouring material |
| CN104086194A (en) * | 2014-07-14 | 2014-10-08 | 中国京冶工程技术有限公司 | Blast furnace iron tapping trough ramming material and preparation method thereof |
| CN104761268A (en) * | 2015-03-19 | 2015-07-08 | 通达耐火技术股份有限公司 | Homogenized corundum refractory castable and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106045530A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106045530B (en) | Refractory material for blast furnace tapping channel by adopting waste refractory material | |
| CN101550016B (en) | Magnesia chrome carbon coating and preparation method thereof | |
| CN102898156B (en) | Ladle slag line magnesia carbon brick and preparation method thereof | |
| CN101045636A (en) | Alumina base andalusite-SiC-C brick, manufacturing method and its application | |
| CN100410209C (en) | Pouring material for torpedo tank liner repairing | |
| CN101613211A (en) | A kind of regenerated castable material that utilizes discarded blast furnace main channel material to make | |
| CN102115335A (en) | Novel abrasion resistant silicon-mullite-nitrogen brick for transition zones of rotary cement kiln | |
| CN103922771A (en) | Storage iron runner castable produced by adopting waste iron runner material | |
| CN108046814A (en) | The blast furnace iron outlet groove quick-drying gravity flow pouring material prepared using discarded castable reworked material | |
| CN102701762B (en) | Regeneration repairing material for blast-furnace casting runner and preparation method for regeneration repairing material | |
| CN110436946A (en) | A kind of acidproof spray paint for hot-blast stove vault high temperature position | |
| CN107032805A (en) | A kind of ladle Ultra-low carbon Periclase spinel carbon brick and preparation method | |
| CN108033795A (en) | High alumina castable for fish torpedo ladle permanent layer | |
| CN105712720A (en) | Method for preparing regenerative magnesia-carbon bricks | |
| CN106495718A (en) | One tank foundry ladle MgO SiC C working lining bricks and preparation method | |
| CN108395228B (en) | Fired non-oil-immersed chrome-magnesium-aluminum non-carbonaceous sliding plate brick and preparation method thereof | |
| CN110256057A (en) | Exempt to impregnate sliding plate brick and preparation method thereof | |
| CN100519005C (en) | Aluminium carbon zirconium sliding gate brick produced by unburning process | |
| CN113754450A (en) | Preparation method of high-stability stemming for iron notch of COREX furnace | |
| CN103708845B (en) | Coating material for working layer of continuous-casting tundish | |
| CN110615688B (en) | Low-cost long-life blast furnace taphole mud sleeve and preparation method thereof | |
| CN101423409A (en) | Alumina-carbon lining brick for desulphurization hot-metal bottle and technique for producing the same | |
| CN104961482A (en) | Refractory material recycling technological process | |
| CN105237011A (en) | Slag anti-adhesion coating for hot metal ladle | |
| CN105254317A (en) | Magnesium-iron-aluminum spinel coal injection pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |