CN112707720A - Anhydrous converter large fabric with self-flowing effect - Google Patents
Anhydrous converter large fabric with self-flowing effect Download PDFInfo
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- CN112707720A CN112707720A CN202110132070.2A CN202110132070A CN112707720A CN 112707720 A CN112707720 A CN 112707720A CN 202110132070 A CN202110132070 A CN 202110132070A CN 112707720 A CN112707720 A CN 112707720A
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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
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to an anhydrous converter large fabric with a self-flow effect, which comprises fused magnesia, a flow agent, a sintering agent, slaked lime, bentonite, sodium hexametaphosphate and sodium tripolyphosphate, wherein the mass parts of the components are as follows: 80-90 parts of fused magnesia, 5-8 parts of a flowing agent, 0.5-1 part of a sintering agent, 0.5-1 part of slaked lime, 0.5-1 part of bentonite, 0.5-1 part of sodium hexametaphosphate and 0.5-1 part of sodium tripolyphosphate. The invention has short sintering time, no smoke, no odor and no harmful volatile matters; stirring is not needed during sintering, so that the labor intensity of workers is reduced; water is not needed to be added in the sintering process, the high-temperature furnace body is not corroded, the splashing phenomenon is not generated, and the steel-making efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a large converter waterless fabric with a self-flow effect.
Background
The converter large fabric is mainly used for repairing the charging side, the tapping hole side and the bottom of the converter. The adoption of large-size material for fettling is a necessary means for prolonging the service life of the converter. The large fabrics used in the current market are divided into two types, one is asphalt combined large fabric, and the other is environment-friendly water-based large fabric. The asphalt-bonded large fabric has the defects of serious smoke generation, environmental pollution, long sintering time, short service life and the like in the using process. With the improvement of the national requirement on environmental protection, the traditional asphalt large fabric gradually exits the market. The environment-friendly water-based large fabric becomes the leading product in the market. The environment-friendly water-based large fabric has the advantages of no smoke, short sintering time, long service life and the like in the use process, but is troublesome in construction, a stirrer needs to be used on site for stirring, and the stirrer occupies the effective space on site; the environment-friendly water-based large fabric is added with water, stirred and bagged for later use, and if the waiting time exceeds thirty minutes, water and materials are layered, so that the furnace protection effect is influenced. If 10% -12% of water is added during stirring, the water erodes the high-temperature furnace body, and the phenomenon of splashing caused by water accumulation often occurs. Therefore, how to improve the environmental protection, the erosion resistance and the construction convenience in the use process of the large fabric and ensure the operation safety is a problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the problems, provides a large converter anhydrous fabric with a self-flow effect, and solves the problems of poor environmental protection of large asphalt fabrics, complex operation of large water-based fabrics and potential safety hazards in the prior art.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the anhydrous converter large fabric with the self-flowing effect is characterized by comprising fused magnesia, a flowing agent, a sintering agent, slaked lime, bentonite, sodium hexametaphosphate and sodium tripolyphosphate.
Preferably, the fused magnesia, the flowing agent, the sintering agent, the slaked lime, the bentonite, the sodium hexametaphosphate and the sodium tripolyphosphate respectively comprise the following components in parts by weight: 80-90 parts of fused magnesia, 5-8 parts of a flowing agent, 0.5-1 part of a sintering agent, 0.5-1 part of slaked lime, 0.5-1 part of bentonite, 0.5-1 part of sodium hexametaphosphate and 0.5-1 part of sodium tripolyphosphate.
Preferably, the flowing agent is a mixture of stearic acid and polyvinyl alcohol, and the mass ratio of the stearic acid to the polyvinyl alcohol is (0.3-1): 3-5.
Preferably, the mass percentage content of MgO in the fused magnesia is not less than 95.0%, and the particle size is 0-1 mm.
Preferably, the mass percentage content of the calcium hydroxide in the slaked lime is not less than 95.0%.
Preferably, the particle size of the bentonite powder is 1-5 mm.
Preferably, the mass percentage content of the sodium hexametaphosphate is not less than 90.0 percent.
Preferably, the mass percentage content of the sodium tripolyphosphate is not less than 90.0%.
The use method of the anhydrous converter large fabric with the self-flow effect comprises the following steps:
a large waterless converter fabric with a self-flowing effect is filled into a plastic woven bag or a plurality of plastic woven bags, water is not required to be added for stirring when the waterless converter fabric is used, the waterless converter fabric is directly thrown into a position needing to be repaired in the converter when the converter needs to be repaired, the converter does not need to be repeatedly shaken at 800-1350 ℃, self-flowing is generated by a flowing agent in the large fabric, the self-flowing spreading area of the large fabric reaches 150-200%, the large fabric is burnt for 15-25 minutes, the large fabric turns reddish, and steel making can be achieved after the repairing is finished.
Compared with the prior art, the invention has the beneficial effects that:
compared with the common asphalt large fabric, the invention shortens the sintering time by about 30 minutes, and has no smoke, smell and harmful volatile matters during sintering, and is harmless to human bodies and environment. Compared with a water-based large fabric, the method is simple to operate, stirring is not needed during sintering, a stirrer is not needed on site, the site space is not occupied, and the labor intensity of workers is reduced; water is not needed to be added in the sintering process, so that the high-temperature furnace body is not corroded, and meanwhile, no water exists, so that the splashing phenomenon is not generated; and (3) performing spray repair operation while sintering to improve the steelmaking efficiency.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention and to clearly and unequivocally define the scope of the present invention.
The first embodiment is as follows:
an anhydrous converter large fabric with a self-flowing effect comprises fused magnesia, a flowing agent, a sintering agent, slaked lime, bentonite, sodium hexametaphosphate and sodium tripolyphosphate. The material comprises 800kg of fused magnesia, 50kg of a flowing agent, 10kg of a sintering agent, 10kg of slaked lime, 10kg of bentonite, 5kg of sodium hexametaphosphate and 5kg of sodium tripolyphosphate. The flowing agent is a mixture of stearic acid and polyvinyl alcohol, and the mass ratio of the stearic acid to the polyvinyl alcohol is 0.3: 3. The materials are uniformly stirred and mixed and then packaged for later use.
The fused magnesite is selected from industrial purity, the mass percentage content of MgO in the fused magnesite is 95.0%, the fused magnesite is sieved by a 14-mesh sieve, and the particle size is 0-1.165 mm. The mass percentage of the calcium hydroxide in the slaked lime is 95.0 percent. And sieving the bentonite powder by using a 4-mesh sieve, wherein the particle size is 1-4.6 mm. The mass percentage of the sodium hexametaphosphate is 90.0 percent. The mass percentage of the sodium tripolyphosphate is 90.0%.
The large anhydrous converter fabric prepared in the specific embodiment is filled into 500-1000 kg of plastic woven bags, and is directly put into a position needing to be repaired in the converter when the converter needs to be repaired, the mixture is burnt for 15-25 minutes at 800-1350 ℃, and self-flow is generated by a flowing agent in the large fabric, the spreadability reaches 160%, and repeated furnace shaking is not needed. The large fabric turns reddish, and steel making can be carried out after the repair is finished.
The second embodiment is as follows:
an anhydrous converter large fabric with a self-flowing effect comprises fused magnesia, a flowing agent, a sintering agent, slaked lime, bentonite, sodium hexametaphosphate and sodium tripolyphosphate. The material comprises 900kg of fused magnesia, 50kg of a flowing agent, 5kg of a sintering agent, 5kg of slaked lime, 5kg of bentonite, 10kg of sodium hexametaphosphate and 5kg of sodium tripolyphosphate. The flowing agent is a mixture of stearic acid and polyvinyl alcohol, and the mass ratio of the stearic acid to the polyvinyl alcohol is 1: 5. The materials are uniformly stirred and mixed and then packaged for later use.
The fused magnesite is of industrial purity, the mass percentage of MgO in the fused magnesite is 99.0%, the fused magnesite is sieved by a 20-mesh sieve, and the particle size is 0-0.83 mm. The mass percentage of the calcium hydroxide in the slaked lime is 90.0 percent. And sieving the bentonite powder by using a 7-mesh sieve, wherein the particle size is 1-2.8 mm. The mass percentage of the sodium hexametaphosphate is 95.0 percent. The mass percentage of the sodium tripolyphosphate is 95.0%.
The large anhydrous converter fabric prepared in the specific embodiment is filled into a 500-1000 kg plastic woven bag, is directly thrown into a position needing to be repaired in the converter when the converter needs to be repaired, is burnt for 15-25 minutes at 800-1350 ℃, and automatically flows by virtue of a flowing agent in the large fabric, the spreadability reaches 150%, and repeated furnace shaking is not needed. And (5) making the supplemented materials turn red, and making steel after repairing.
The third concrete embodiment:
an anhydrous converter large fabric with a self-flowing effect comprises fused magnesia, a flowing agent, a sintering agent, slaked lime, bentonite, sodium hexametaphosphate and sodium tripolyphosphate. The material comprises 800kg of fused magnesia, 80kg of a flowing agent, 7kg of a sintering agent, 7kg of slaked lime, 7kg of bentonite, 7kg of sodium hexametaphosphate and 7kg of sodium tripolyphosphate. The flowing agent is a mixture of stearic acid and polyvinyl alcohol, and the mass ratio of the stearic acid to the polyvinyl alcohol is 0.3: 5. The materials are uniformly stirred and mixed and then packaged for later use.
The fused magnesite is selected from industrial purity, the mass percentage content of MgO in the fused magnesite is 95.0%, the fused magnesite is sieved by a 14-mesh sieve, and the particle size is 0-1.165 mm. The mass percentage of the calcium hydroxide in the slaked lime is 95.0 percent. And sieving the bentonite powder by using a 4-mesh sieve, wherein the particle size is 1-4.6 mm. The mass percentage of the sodium hexametaphosphate is 95.0 percent. The mass percentage of the sodium tripolyphosphate is 95.0%.
The large anhydrous converter fabric prepared in the specific embodiment is filled into a 500-1000 kg plastic woven bag, is directly thrown into a position needing to be repaired in the converter when the converter needs to be repaired, is burnt for 15-25 minutes at 800-1350 ℃, and automatically flows by virtue of a flowing agent in the large fabric, the spreadability reaches 200%, and repeated furnace shaking is not needed. The large fabric turns reddish, and steel making can be carried out after the repair is finished.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, that the preferred embodiments of the present invention are described above and the present invention is not limited to the preferred embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the present invention and these changes and modifications are within the scope of the invention as claimed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The anhydrous converter large fabric with the self-flowing effect is characterized by comprising fused magnesia, a flowing agent, a sintering agent, slaked lime, bentonite, sodium hexametaphosphate and sodium tripolyphosphate.
2. The anhydrous converter large fabric with the self-flow effect according to claim 1, wherein the electrically-fused magnesia, the flowing agent, the sintering agent, the slaked lime, the bentonite, the sodium hexametaphosphate and the sodium tripolyphosphate respectively comprise the following components in parts by weight: 80-90 parts of fused magnesia, 5-8 parts of a flowing agent, 0.5-1 part of a sintering agent, 0.5-1 part of slaked lime, 0.5-1 part of bentonite, 0.5-1 part of sodium hexametaphosphate and 0.5-1 part of sodium tripolyphosphate.
3. The anhydrous converter big fabric with self-flowing effect according to claim 1, wherein the flowing agent is a mixture of stearic acid and polyvinyl alcohol, and the mass ratio of stearic acid to polyvinyl alcohol is (0.3-1): 3-5.
4. The anhydrous converter big fabric with the self-flowing effect according to claim 1, wherein the mass percentage content of MgO in the fused magnesia is not less than 95.0%, and the particle size of the fused magnesia is 0-1 mm.
5. The anhydrous converter big fabric with the self-flowing effect according to claim 1, wherein the mass percentage of sodium hydroxide and calcium hydroxide in the slaked lime is not less than 95.0%.
6. The anhydrous converter big fabric with the self-flowing effect is characterized in that the particle size of the bentonite powder is 1-5 mm.
7. The anhydrous converter big fabric with the self-flowing effect according to claim 1, wherein the mass percentage of the sodium hexametaphosphate is not less than 90.0%.
8. The anhydrous converter big fabric with the self-flowing effect according to claim 1, wherein the mass percentage of the sodium tripolyphosphate is not less than 90.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132070.2A CN112707720B (en) | 2021-01-31 | 2021-01-31 | Anhydrous converter large fabric with self-flowing effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132070.2A CN112707720B (en) | 2021-01-31 | 2021-01-31 | Anhydrous converter large fabric with self-flowing effect |
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| CN112707720A true CN112707720A (en) | 2021-04-27 |
| CN112707720B CN112707720B (en) | 2022-08-02 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417549A (en) * | 2001-11-06 | 2003-05-14 | 武汉威林炉衬材料有限责任公司 | Large-area self-flowing converter repairing material |
| JP2005082434A (en) * | 2003-09-08 | 2005-03-31 | Denki Kagaku Kogyo Kk | Repair mortar |
| CN103011848A (en) * | 2011-09-27 | 2013-04-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Self-flow repairing mass as well as preparation method and use method thereof |
| CN106747500A (en) * | 2016-12-07 | 2017-05-31 | 钢城集团凉山瑞海实业有限公司 | Large face of converter artesian repairing material and preparation method thereof |
| CN107141938A (en) * | 2017-06-06 | 2017-09-08 | 合肥月煌新型装饰材料有限公司 | A kind of buildings decoration water-repellent paint and preparation method thereof |
| CN107814966A (en) * | 2017-11-03 | 2018-03-20 | 嘉兴北化高分子助剂有限公司 | A kind of environment-friendly rubber vulcanization flowable and preparation method thereof and application method |
| CN110003653A (en) * | 2019-03-15 | 2019-07-12 | 深圳市鸿泰达实业有限公司 | A kind of composition, preparation method and application |
| CN111777422A (en) * | 2020-06-10 | 2020-10-16 | 鞍山赛诺新材料有限公司 | Environment-friendly water-based large fabric for repairing converter |
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2021
- 2021-01-31 CN CN202110132070.2A patent/CN112707720B/en active Active
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| CN1417549A (en) * | 2001-11-06 | 2003-05-14 | 武汉威林炉衬材料有限责任公司 | Large-area self-flowing converter repairing material |
| JP2005082434A (en) * | 2003-09-08 | 2005-03-31 | Denki Kagaku Kogyo Kk | Repair mortar |
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| CN106747500A (en) * | 2016-12-07 | 2017-05-31 | 钢城集团凉山瑞海实业有限公司 | Large face of converter artesian repairing material and preparation method thereof |
| CN107141938A (en) * | 2017-06-06 | 2017-09-08 | 合肥月煌新型装饰材料有限公司 | A kind of buildings decoration water-repellent paint and preparation method thereof |
| CN107814966A (en) * | 2017-11-03 | 2018-03-20 | 嘉兴北化高分子助剂有限公司 | A kind of environment-friendly rubber vulcanization flowable and preparation method thereof and application method |
| CN110003653A (en) * | 2019-03-15 | 2019-07-12 | 深圳市鸿泰达实业有限公司 | A kind of composition, preparation method and application |
| CN111777422A (en) * | 2020-06-10 | 2020-10-16 | 鞍山赛诺新材料有限公司 | Environment-friendly water-based large fabric for repairing converter |
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| CN112707720B (en) | 2022-08-02 |
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