ZA200601585B - Refractory composition for constructing dome portion of fluidized bed reduction furnace for reduction of iron ore - Google Patents
Refractory composition for constructing dome portion of fluidized bed reduction furnace for reduction of iron ore Download PDFInfo
- Publication number
- ZA200601585B ZA200601585B ZA200601585A ZA200601585A ZA200601585B ZA 200601585 B ZA200601585 B ZA 200601585B ZA 200601585 A ZA200601585 A ZA 200601585A ZA 200601585 A ZA200601585 A ZA 200601585A ZA 200601585 B ZA200601585 B ZA 200601585B
- Authority
- ZA
- South Africa
- Prior art keywords
- fluidized bed
- iron ore
- dome portion
- refractory composition
- bed reduction
- Prior art date
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 66
- 229910052742 iron Inorganic materials 0.000 title claims description 30
- 239000000203 mixture Substances 0.000 title claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 14
- 238000010276 construction Methods 0.000 description 12
- 230000002829 reductive effect Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000000571 coke Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- 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
- C04B35/10—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 aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
-
- 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
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62665—Flame, plasma or melting treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1808—Removable covers
-
- 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
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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
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/94—Products characterised by their shape
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- 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
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- 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
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Thermal Sciences (AREA)
- Plasma & Fusion (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Ceramic Products (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
REFRACTORY COMPOSITION FOR CONSTRUCTING DOME PORTION OF
FLUIDIZED BED REDUCTION FURNACE FOR REDUCTION OF IRON ORE
The present invention relates to refractories for constructing a dome portion of a fluidized bed reduction furnace for reduction of iron ore powder, and more particularly, to a refractory composition of castable refractories having high strength, good abrasion resistance, good chemical resistance against reductive gas, good thermal impact resistance, and good workability for constructing a dome portion of a fluidized bed reduction furnace for use in the FINEX process.
In the modern steel production, an indirect method is used, in which molten iron prepared at first is subjected to decarbonization, to produce steel. The molten iron is produced by a blast furnace method, in which coke is used as fuel.
FIG. 1 illustrates a diagram for describing a method for producing iron by using the blast furnace method schematically, wherein iron ore passes through a pretreatment process in which the iron ore is crushed, concentrated, briquetted of iron ore powder, sintered, to form hard pellets that are lumps of a predetermined size chargeable into the blast furnace, when coke from flaming coal is used as fuel. The pellets and the coke are charged into the blast furnace, and fired to produce the molten iron.
Though the blast furnace method is used as the best iron production method for mass production of iron presently, the blast furnace method costs high due to complicated processes, and requirements for additional separate large sized facilities for sintering ore and cokes production, and causes a problem of discharging sulfur oxides
SOx, nitrides NOx, carbon dioxide COs, and the like, which are environment pollution substances, from the sintering ore and coke production.
Equipment is developed by POSCO, a Korean steel production company, in which the production method of the blast furnace method is changed to reduce natural state iron ore powder directly by fluidized reaction without the pretreatment of the iron ore and coke, of which patent was filed with Korean patent application No. 10-1995- 41931, patented with a Korean Patent registration No. 10-236160, of which process is named as FINEX process, and the equipment is constructed and put into test operation, recently.
FIG 2 illustrates a diagram of the FINEX process, an iron production process, having the present invention applied thereto schematically, and FIG 3 illustrates an enlarged view of the fluidized bed reduction furnace in FIG 2. The FINEX process is a . 10 new iron production process for producing the molten iron economically, in which iron ore powder is reduced step by step through many stages of the fluidized bed reduction furnaces 1, and charges into a melting furnace 3 together with 8~50mn sized briquette coal, to form molten iron, wherein iron ore powder with a grain size of about 8mm is passed through many stages of fluidized bed reduction furnaces 1, to change into reduced iron ore, formed into pellets(HCI ; Hot Compact Iron), and charged into the melting furnace.
The fluidized bed reduction furnace with a closed dome portion 4 is provided with a distribution plate 2 supported on columns (not shown) inside of the fluidized bed reduction furnace. The distribution plate is a member provided for making uniform distribution of high pressure, high temperature reductive gas introduced into the inside of the fluidized bed reduction furnace to fluidize and reduce the iron ore powder, and has a plurality of pass through holes for pass of gas.
The dome portion 4 of the fluidized bed reduction furnace can be formed by attachment of refractory to a dome frame, when, since the refractory can not be brought into the inside of the fluidized bed reduction furnace 1 directly, the refractory is required to be sprayed by means of a gunning machine of the fluidized bed reduction furnace. It is required that the refractory construction of the gunning machine is stable even in a high pressure, high temperature reductive gas environment, and endures even under rapid rise and drop of temperature.
Therefore, the refractory sprayed by the gunning machine to construct the dome 4 of the fluidized bed reduction furnace 1 is a material having chemical resistance, particularly, corrosion resistance against CO gas, thermal impact resistance, and mechanical strength.
Since the FINEX process equipment is the first one in the world, there has been no related art material for construction of the dome portion 4 yet. However, high alumina basis castable material was used in an experimental equipment, which causes a problem of shrinkage and cracking to break away during service due to poor CO gas resistance, and thermal impact resistance during service.
Therefore, since the reaction fumace is not for small sized experimental equipment, but for full scale commercial production equipment for production of one ’ million tones yearly, the material of the dome portion 4 is required to have no chemical reaction with the reductive gas and various components of the iron ore in the vicinity of 600 ~ 1000°C during service, good abrasion resistance in a high temperature, high speed fluidized condition of the iron ore powder, and good thermal impact resistance enough to endure fast temperature rise and drop following re-operation of the equipment because cracks occur, not in a continuous operation, but in an intermittent operation.
Moreover, the dome portion 4 of the fluidized bed reduction furnace 1 can not * be formed completely at a place outside of the furnace 1 in a refractory state, and mount it on the furnace 1 in view of structural nature of design, but be formed by attaching the refractory to a dome frame of the dome 4. Therefore, it is required that workability of the refractory is secured as a material of a non-fixed form that enables spraying by the gunning machine, and there is no deformation of the structure even during curing and drying process after construction or no burst of the structure during construction because the dome is a large sized construction.
Since a more rigorous service condition, particularly, thermal impact caused by rapid rise and drop of a temperature of, not the experimental equipment, but commercial equipment, is foreseen, a material for the dome portion is required to meet product design criteria of a structural density of below 2.55, dry compression strength of 750kg/cm’ or higher at a service temperature, over 30% of porosity, CO gas resistance higher than A-B grade of ASTM C288.
An object of the present invention is to provide a refractory composition, which is different from related art experimental refractory composition, for constructing a dome portion of a fluidized bed reaction furnace, which has corrosion resistance so as to be chemically stable in a reductive gas environment, thermal impact resistance, and mechanical strength at the time iron ore powder having a wide range of grain size distribution is reduced in many steps by fluidized bed reduction furnaces.
The object of the present invention can be achieved by providing refractory composition for constructing a dome portion of a fluidized bed reduction furnace for reduction of iron ore powder including 1.5 ~ 2.5wt% of silica SiO, below 0.05wt% of
Fe;0,, 8 ~ 11wt% of Ca0, and balance of alumina AlOs, to make up 100wt% of the refractory composition.
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention. In the drawings;
FIG 1 illustrates a diagram for describing a method for producing iron by using the blast furnace method schematically;
FIG 2 illustrates a diagram an iron production process of the FINEX process having the present invention applied thereto schematically; and
FIG 3 illustrates an enlarged view of the fluidized bed reduction furnace in FIG
Best Mode for Carrying Out the Invention
Final refractory composition of the present invention has 1.5 ~ 2.5wt% of silica
Si0;, below 0.05wt% of Fe,03, 8 ~ 11wt% of CaO, and balance of alumina AL,O;, to 5 make up 100wt% of the refractory composition, wherein contents of the silica Si0,, and
Fe,0; are defined for securing workability and the CO gas resistance because spray workability by using a spray gun becomes poor at a silica SiO; content of below 1.5wt%, and CO gas resistance at high temperature, and high pressure becomes poor, or sintering shrinkage at a high temperature occurs due to free silica components at a silica content higher than 2.5wt%, to drop the thermal impact resistance. The Fe; is for the
CO gas resistance, and content below 0.05wt% is preferable.
The CaO is CaO content in a material, for an example, in a case of using alumina cement. Below 8wt% of the CaO causes to fail in securing workability (i.e., regardless of kind of cement used or regardless of kind of CaO in a raw material used), resulting to drop attachment ratio in the construction, to increase rebound loss, to fail in securing a required strength.
Over 11wt% of CaO content causes relative drop of the alumina Al;O; content to result in drop of strength at a high temperature, to make the thermal impact resistance poor, even if workability and strength can be secured.
As a main component of alumina Al;Os, sintered or melted alumina may be used, and since the fluidized bed reduction furnace 1 having the present invention applied thereto is used in a strong reductive environment, it is preferable that the alumina content is higher than 95%.
With reference to a whole composition of 100wt%, it is not preferable that the alumina content, the main component, is too low, that increases contents of other sub- components (rest of components excluding the main component) to fail to obtain above described properties, and that increases the CaO content to drop the strength, and opposite to this, if the alumina content, the main component, is too high, that decreases contents of other sub-components relatively, to fail to meet required properties, and increases the density to drop the porosity below 30%.
The refractory composition of the present invention, a material for constructing the dome portion 4 of the fluidized bed reduction furnace 1 for reduction of iron ore powder, is an alumina basis refractory composition having properties of a structural density of below 2.55, 30% or higher porosity at 1000°C, 750kg/cm’ or over dry compression strength, below 10% of dome construction rebound loss, and A ~ B grade or higher CO gas resistance with reference to ASTM C288.
Table 1 below shows comparison of refractory composition for construction of a dome portion of the fluidized bed reduction furnace of a FINEX process applied to experimental equipment (comparative example), and a commercial equipment (embodiment).
Table 1
I P—— wo |» | ow a TE ETE 1.7 es [EE BT EE
Ee IE EP ony fuwe | ow |e
PS I BN
The gunning machine used in spraying the refractory composition of the present invention in construction of the dome portion 4 of the fluidized bed reduction furnace 1 has an air discharge pressure 2kg/cm? or higher, and a water discharge pressure 2kg/cm’ or higher.
Since the alumina basis refractory obtained from the refractory composition of the present invention permits to secure workability required for basic design, and has properties of 30% or over of porosity at 1000°C, 750kg/om? or over of dry compression strength, 10% or below of dome construction rebound loss, and A ~ B grade of CO gas resistance with reference to ASTM C288, the dome portion of the fluidized bed reduction furnace of the refractory composition prevents deformation of the structure during curing or construction process or burst during construction, and has properties of a corrosion resistance so as to be chemically stable in a reductive gas environment, thermal impact resistance, and mechanical strength, thereby providing very high industrial applicability.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (1)
1. A refractory composition for constructing a dome portion of a fluidized bed reduction furnace for reduction of iron ore powder comprising 1.5 ~ 2.5wt% of silica Si0,, below 0.05wt% of Fe;0;, 8 ~ 11wt% of CaO, and balance of alumina Al,O;, to make up 100wt% of the refractory composition.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20030059132A KR100558653B1 (en) | 2003-08-26 | 2003-08-26 | refractory composition using dome part molding of fluid layer reduction furnace for reduction iron ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200601585B true ZA200601585B (en) | 2007-05-30 |
Family
ID=34214700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA200601585A ZA200601585B (en) | 2003-08-26 | 2006-02-23 | Refractory composition for constructing dome portion of fluidized bed reduction furnace for reduction of iron ore |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR100558653B1 (en) |
| CN (2) | CN1839208A (en) |
| WO (1) | WO2005019482A1 (en) |
| ZA (1) | ZA200601585B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757252B (en) * | 2012-08-09 | 2013-07-31 | 山国强 | 1080 m<3> blast furnace main iron runner castable |
| CN105967664A (en) * | 2016-05-09 | 2016-09-28 | 长兴盛华耐火材料有限公司 | Castable with resistance to reducing atmosphere |
| CN114105656B (en) * | 2021-11-25 | 2022-11-18 | 吴丽贤 | Production method of novel roasting-sintering desulfurization gun with high-temperature adhesive |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3060043A (en) * | 1960-03-31 | 1962-10-23 | Harbison Walker Refractories | Refractory castable |
| CA1247151A (en) * | 1985-06-24 | 1988-12-20 | Thomas R. Kleeb | Abrasion resistant refractory composition |
| ZA918446B (en) * | 1990-12-13 | 1992-07-29 | Heindrich Schroeder Le R Johan | Monolithic refractory lining |
| DE4215939A1 (en) * | 1992-05-14 | 1993-11-18 | Bosch Gmbh Robert | Sintered alumina product |
| US5512325A (en) * | 1994-10-28 | 1996-04-30 | Indresco Inc. | Non-slumping, pumpable castable and method of applying the same |
-
2003
- 2003-08-26 KR KR20030059132A patent/KR100558653B1/en active IP Right Grant
-
2004
- 2004-08-20 CN CNA2004800240584A patent/CN1839208A/en active Pending
- 2004-08-20 WO PCT/KR2004/002098 patent/WO2005019482A1/en active Application Filing
- 2004-08-20 CN CN2009102536544A patent/CN101759437B/en active Active
-
2006
- 2006-02-23 ZA ZA200601585A patent/ZA200601585B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR100558653B1 (en) | 2006-03-14 |
| CN101759437B (en) | 2013-11-27 |
| CN1839208A (en) | 2006-09-27 |
| CN101759437A (en) | 2010-06-30 |
| WO2005019482A1 (en) | 2005-03-03 |
| KR20050022109A (en) | 2005-03-07 |
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