CN111792920A - Novel environment-friendly converter quick repairing material - Google Patents
Novel environment-friendly converter quick repairing material Download PDFInfo
- Publication number
- CN111792920A CN111792920A CN202010569776.0A CN202010569776A CN111792920A CN 111792920 A CN111792920 A CN 111792920A CN 202010569776 A CN202010569776 A CN 202010569776A CN 111792920 A CN111792920 A CN 111792920A
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- Prior art keywords
- converter
- mass
- novel environment
- friendly
- graphite
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- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 20
- 239000010439 graphite Substances 0.000 claims abstract description 20
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 19
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 19
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 20
- 230000008439 repair process Effects 0.000 claims description 13
- 238000010079 rubber tapping Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052681 coesite Inorganic materials 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 229910052906 cristobalite Inorganic materials 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052682 stishovite Inorganic materials 0.000 claims description 5
- 229910052905 tridymite Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 238000004886 process control Methods 0.000 claims description 3
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 abstract description 4
- 239000003963 antioxidant agent Substances 0.000 abstract description 2
- 230000003078 antioxidant effect Effects 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- C04B35/01—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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/44—Refractory linings
-
- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Metallurgy (AREA)
- Structural Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to a novel environment-friendly converter quick repairing material which comprises 95-97 parts by mass of magnesite and 3-5 parts by mass of graphite. The magnesite block is 80-150 mm in size, the graphite granularity is 80-150 meshes, and the mass percentage of carbon in the graphite is not lower than 90%. The invention is formed by mixing the refractory raw materials of magnesite stone and antioxidant graphite, and has the characteristics of high adhesion rate, no smoke, short sintering time and long service life.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a novel environment-friendly converter quick repairing material.
Background
The furnace life of the converter is a one-time comprehensive key economic and technical index in converter steelmaking. The furnace life is prolonged, the production can be stabilized, the productivity of the converter can be improved, the consumption of refractory materials is reduced, and the production cost is effectively reduced. The main factor influencing the age of the converter is the erosion speed of the converter lining. In order to ensure the effectiveness of the furnace lining and improve the service life of the converter, the furnace lining of the converter needs to be frequently and locally repaired. The traditional furnace repairing method is to repair the furnace by furnace repairing measures such as tar bricks, large fabrics and the like, and each furnace repairing needs to be sintered for a long time, which takes about 40 minutes, and has long time and high cost.
Disclosure of Invention
The invention aims to solve the problems and provides a novel environment-friendly converter quick repairing material which is short in furnace repairing sintering time and high in working efficiency.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the novel environment-friendly converter quick repairing material is characterized by comprising 95-97 parts by mass of magnesite and 3-5 parts by mass of graphite.
Further, the size of magnesite stone is 80-150 mm, SiO among the magnesite stone2Parts by mass of6 to 10 parts of Al2O3The amount of the inorganic oxide is 0 to 0.5 part by mass, and the amount of the MgO is 40 to 50 parts by mass.
Further, the granularity of the graphite is 80-150 meshes, and the mass percentage of carbon in the graphite is not lower than 90%.
Furthermore, the novel environment-friendly converter quick repair material needs to be adjusted to the following state in a furnace number before furnace repair:
the oxidability of the end-point slag liquid is controlled to be less than 700 ppm;
the mass percentage content of FeO is controlled to be 8-10%;
the alkalinity of the end-point slag liquid is controlled to be 3.0 +/-0.2, and the alkalinity of the slag liquid is CaO and SiO2The mass ratio of (a);
the mass percentage content of MgO is controlled to be 8-12%;
the carbon content of the end-point slag liquid is not less than 0.08 percent.
Further, the novel environment-friendly converter quick repairing material repairs the process control points of the converter during repairing:
tapping by the converter, wherein no residual molten steel exists in the converter, so that an isolation layer is prevented from being formed;
the feeding amount is in direct proportion to the size of the converter, and 1 ton of quick repair material is fed by taking 100 tons of converters as a standard;
sintering temperature: 800-1300 ℃;
sintering time: 8-15 minutes.
Compared with the prior art, the invention has the beneficial effects that:
the invention is formed by mixing the refractory raw materials of magnesite stone and antioxidant graphite, and has the characteristics of high adhesion rate, no smoke, short sintering time and long service life.
The invention has the functions of quick deoxidation, slag accumulation and slag condensation on the slag, effectively improves the converter fettling quality, and is suitable for fettling operation of each part of a converter large surface, a converter bottom and the like.
The invention adopts high-temperature slag retention for quick repair, thereby avoiding the yield loss caused by furnace shutdown.
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:
the novel environment-friendly converter quick repairing material comprises 95 parts of magnesite and 5 parts of graphite. The size of the magnesite block is 80mm, and SiO in the magnesite block2Is 6 parts by mass of Al2O3The weight portion of the component (A) is 0.5, and the weight portion of MgO is 50. The graphite has the granularity of 80 meshes, and the mass percentage of carbon in the graphite is 90%.
The novel environment-friendly converter quick repairing material regulates the slag system to the following states one heat before the furnace repairing:
the oxidability of the end-point slag liquid is controlled to be less than 700 ppm;
the mass percentage content of FeO is controlled to be 8%;
the alkalinity of the end-point slag liquid is controlled to be 2.8, and the alkalinity of the slag liquid is CaO and SiO2The mass ratio of (a);
the mass percentage content of MgO is controlled at 8%;
the carbon content of the end-point slag liquid is 0.08 percent.
The novel environment-friendly process control point for repairing the converter by using the quick repairing material for the converter during repairing comprises the following steps:
tapping by the converter, wherein no residual molten steel exists in the converter, so that an isolation layer is prevented from being formed;
the feeding amount is in direct proportion to the size of the converter, the specific embodiment repairs the 100-ton converter, and the amount of the fed quick repair material is 1 ton;
sintering temperature: 800 ℃;
sintering time: for 15 minutes.
The concrete operation process during repairing is as follows:
after tapping of the converter is finished, leaving half of slag, and directly adding the fettling material into the converter to perform the following fettling operations according to the required requirements:
(1) when repairing hearth and reverse leveling zone or oxygen impact zone: the converter is shaken to plus (60-65 degrees), after the fettling material is added, the converter is quickly shaken to minus 30 degrees, the converter is stood for half a minute and then shaken twice, the shaking range is minus 30 degrees to plus 30 degrees, and finally the converter is zeroed and sintered.
(2) And after the fettling material is completely sintered, slag remains and slag splashing operation is performed.
(3) And (4) repairing the furnace, pouring out the slag after slag splashing is finished, and continuously performing slag remaining operation if necessary.
The second embodiment is as follows:
the novel environment-friendly converter quick repairing material comprises 97 parts by mass of magnesite and 3 parts by mass of graphite. The size of the magnesite is 150mm, and SiO in the magnesite is2Is 10 parts by mass of Al2O3The weight portion of the component (A) is 0.1, and the weight portion of MgO is 40. The graphite has the granularity of 150 meshes, and the mass percentage of carbon in the graphite is 95%.
The novel environment-friendly converter quick repairing material regulates the slag system to the following states one heat before the furnace repairing:
the oxidability of the end-point slag liquid is controlled to be less than 700 ppm;
the mass percentage content of FeO is controlled to be 10 percent;
the alkalinity of the end-point slag liquid is controlled to be 3.2, and the alkalinity of the slag liquid is CaO and SiO2The mass ratio of (a);
the mass percentage content of MgO is controlled at 12%;
the carbon content of the end-point slag liquid is 1.5 percent.
Further, the concrete operation process of the novel environment-friendly converter quick repairing material for repairing the converter is as follows:
tapping by the converter, wherein no residual molten steel exists in the converter, so that an isolation layer is prevented from being formed;
the feeding amount is in direct proportion to the size of the converter, the specific embodiment repairs the 200-ton converter, and the amount of the fed quick repair material is 2 tons;
sintering temperature: 1300 ℃;
sintering time: for 8 minutes.
The concrete operation process during repairing is as follows:
after tapping of the converter is finished, leaving half of slag, and directly adding the fettling material into the converter to perform the following fettling operations according to the required requirements:
(1) when the converter is repaired: the converter is shaken to plus (50-55 degrees), the converter is shaken twice between plus (40-90 degrees) after the repairing materials are added, the repairing materials are spread, and finally the converter is shaken to plus 90 degrees for sintering.
(2) In the embodiment, the repairing mass is 2 tons, so that the repairing mass needs to be stacked in the throwing waste steel hopper in a front-back sequence, and the angle of the furnace body is gradually changed along with the throwing of the repairing mass.
(3) And after the fettling material is completely sintered, slag remains and slag splashing operation is performed.
(4) And (4) repairing the furnace, pouring out the slag after slag splashing is finished, and continuously performing slag remaining operation if necessary.
The third concrete embodiment:
the novel environment-friendly converter quick repairing material comprises 96 parts by mass of magnesite and 4 parts by mass of graphite. The size of the magnesite block is 100mm, and SiO in the magnesite block2Is 8 parts by mass of Al2O3The weight portion of the component (A) is 0.3, and the weight portion of MgO is 45. The graphite has the granularity of 100 meshes, and the mass percentage of carbon in the graphite is 95%.
The novel environment-friendly converter quick repairing material regulates the slag system to the following states one heat before the furnace repairing:
the oxidability of the end-point slag liquid is controlled to be less than 700 ppm;
the mass percentage content of FeO is controlled to be 9 percent;
the alkalinity of the end-point slag liquid is controlled to be 3.0, and the alkalinity of the slag liquid is CaO and SiO2The mass ratio of (a);
the mass percentage content of MgO is controlled at 10 percent;
the carbon content of the end-point slag liquid is 1.3 percent.
Further, the concrete operation process of the novel environment-friendly converter quick repairing material for repairing the converter is as follows:
tapping by the converter, wherein no residual molten steel exists in the converter, so that an isolation layer is prevented from being formed;
the feeding amount is in direct proportion to the size of the converter, the specific embodiment repairs the 150-ton converter, and the amount of the fed quick repair material is 1.5 tons;
sintering temperature: 1000 ℃;
sintering time: for 10 minutes.
The concrete operation process during repairing is as follows:
after tapping of the converter is finished, leaving half of slag, and directly adding the fettling material into the converter to perform the following fettling operations according to the required requirements:
(1) when the combined position of the furnace bottom and the steel tapping direction is repaired, after the repairing mass is added, the converter is inclined to-50 degrees for sintering.
(2) In the embodiment, the repairing mass is 2 tons, so that the repairing mass needs to be stacked in the throwing waste steel hopper in a front-back sequence, and the angle of the furnace body is gradually changed along with the throwing of the repairing mass.
(3) And after the fettling material is completely sintered, slag remains and slag splashing operation is performed.
(4) And (4) repairing the furnace, pouring out the slag after slag splashing is finished, and continuously performing slag remaining operation if necessary.
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 (5)
1. The novel environment-friendly converter quick repairing material is characterized by comprising 95-97 parts by mass of magnesite and 3-5 parts by mass of graphite.
2. The novel environment-friendly converter quick repairing mix as claimed in claim 1, wherein the magnesite is 80-150 mm in size, and SiO in the magnesite is26-10 parts by mass of Al2O3The amount of the inorganic oxide is 0 to 0.5 part by mass, and the amount of the MgO is 40 to 50 parts by mass.
3. The novel environment-friendly converter quick repairing material as claimed in claim 1, wherein the graphite has a particle size of 80-150 meshes, and the mass percentage of carbon in the graphite is not less than 90%.
4. The novel environment-friendly converter quick repairing material as claimed in claim 1, wherein the slag system is adjusted to the following state one heat before the furnace repairing:
the oxidability of the end-point slag liquid is controlled to be less than 700 ppm;
the mass percentage content of FeO is controlled to be 8-10%;
the alkalinity of the end-point slag liquid is controlled to be 3.0 +/-0.2, and the alkalinity of the slag liquid is CaO and SiO2The mass ratio of (a);
the mass percentage content of MgO is controlled to be 8-12%;
the carbon content of the end-point slag liquid is not less than 0.08 percent.
5. The novel environment-friendly converter fast patching material as claimed in claim 1, wherein the novel environment-friendly converter fast patching material is used for patching process control points of a converter during patching:
tapping by the converter, wherein no residual molten steel exists in the converter, so that an isolation layer is prevented from being formed;
the feeding amount is in direct proportion to the size of the converter, and 1 ton of quick repair material is fed by taking 100 tons of converters as a standard;
sintering temperature: 800-1300 ℃;
sintering time: 8-15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569776.0A CN111792920A (en) | 2020-06-20 | 2020-06-20 | Novel environment-friendly converter quick repairing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569776.0A CN111792920A (en) | 2020-06-20 | 2020-06-20 | Novel environment-friendly converter quick repairing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111792920A true CN111792920A (en) | 2020-10-20 |
Family
ID=72803616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010569776.0A Pending CN111792920A (en) | 2020-06-20 | 2020-06-20 | Novel environment-friendly converter quick repairing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111792920A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114774623A (en) * | 2022-05-18 | 2022-07-22 | 阳春新钢铁有限责任公司 | Method for quickly repairing furnace by using magnesite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB938040A (en) * | 1960-02-15 | 1963-09-25 | Canadian Refractories Ltd | Refractory materials for use in converter linings |
| US4912068A (en) * | 1988-11-21 | 1990-03-27 | Dresser Industries, Inc. | Magnesite-carbon refractories |
| US5646079A (en) * | 1993-10-23 | 1997-07-08 | Veitsch-Radex Aktiengesellschaft Fur Feuerfeste Erzeungnisse | Refractory ceramic mass and its use |
| US6313056B1 (en) * | 1998-08-20 | 2001-11-06 | Harbison-Walker Refractories Company | Non-slumping sprayable refractory castables containing thermal black |
| CN1527016A (en) * | 2003-03-07 | 2004-09-08 | 辽宁科英耐火材料有限公司 | Quick repairing material and its production process |
| CN101913893A (en) * | 2010-09-07 | 2010-12-15 | 河北理工大学 | Hot patching material for large face of converter |
| CN104673966A (en) * | 2015-01-22 | 2015-06-03 | 河北钢铁股份有限公司承德分公司 | Method for rapidly maintaining converter lining |
| CN109593909A (en) * | 2019-01-15 | 2019-04-09 | 华北理工大学 | The method that converter is repaired using waste magnesia carbon bricks |
| CN110042196A (en) * | 2019-03-20 | 2019-07-23 | 南京钢铁股份有限公司 | A kind of resistance to material furnace retaining method of coverter pig sizing |
-
2020
- 2020-06-20 CN CN202010569776.0A patent/CN111792920A/en active Pending
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|---|---|---|---|---|
| GB938040A (en) * | 1960-02-15 | 1963-09-25 | Canadian Refractories Ltd | Refractory materials for use in converter linings |
| US4912068A (en) * | 1988-11-21 | 1990-03-27 | Dresser Industries, Inc. | Magnesite-carbon refractories |
| US5646079A (en) * | 1993-10-23 | 1997-07-08 | Veitsch-Radex Aktiengesellschaft Fur Feuerfeste Erzeungnisse | Refractory ceramic mass and its use |
| US6313056B1 (en) * | 1998-08-20 | 2001-11-06 | Harbison-Walker Refractories Company | Non-slumping sprayable refractory castables containing thermal black |
| CN1527016A (en) * | 2003-03-07 | 2004-09-08 | 辽宁科英耐火材料有限公司 | Quick repairing material and its production process |
| CN101913893A (en) * | 2010-09-07 | 2010-12-15 | 河北理工大学 | Hot patching material for large face of converter |
| CN104673966A (en) * | 2015-01-22 | 2015-06-03 | 河北钢铁股份有限公司承德分公司 | Method for rapidly maintaining converter lining |
| CN109593909A (en) * | 2019-01-15 | 2019-04-09 | 华北理工大学 | The method that converter is repaired using waste magnesia carbon bricks |
| CN110042196A (en) * | 2019-03-20 | 2019-07-23 | 南京钢铁股份有限公司 | A kind of resistance to material furnace retaining method of coverter pig sizing |
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| Title |
|---|
| 朕万等: "用后镁碳砖基转炉终渣改质剂的配料优化", 《武汉科技大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114774623A (en) * | 2022-05-18 | 2022-07-22 | 阳春新钢铁有限责任公司 | Method for quickly repairing furnace by using magnesite |
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Application publication date: 20201020 |