CN108439958A - A kind of converter bottom hot swap seam refractory material and construction method - Google Patents
A kind of converter bottom hot swap seam refractory material and construction method Download PDFInfo
- Publication number
- CN108439958A CN108439958A CN201810299227.9A CN201810299227A CN108439958A CN 108439958 A CN108439958 A CN 108439958A CN 201810299227 A CN201810299227 A CN 201810299227A CN 108439958 A CN108439958 A CN 108439958A
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- refractory material
- seam
- hot swap
- component part
- magnesia
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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
- C04B35/01—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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
-
- 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
-
- 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
- C04B2235/428—Silicon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Abstract
The invention discloses a kind of converter bottom hot swap seam refractory material and its configuration methods and construction method.Wherein, the seam refractory material is configured by the first component part and the second component part, and first component part is by weight percentage：63~85wt% of magnesia, 0~10wt% of pitch, 0~10wt% of graphite, 2~17wt% of metal powder；Second component part includes the curing agent of the resin of 5~15wt% of the weight of first component part, the alcohols material of 5~15wt% and 0.5 1.5wt%.The present invention can meet the requirement of converter bottom 1000~2000 stove of service life when new stove is used as a servant and stove labour mid-term is replaced, and ensure that converter is normally kept the safety in production.
Description
Technical field
The invention belongs to steelmaking technical field more particularly to a kind of converter bottom hot swap seam refractory material and constructions
Method.
Background technology
Converter is to use most common steelmaking equipment at present mainly for the production of the smelting of carbon steel, steel alloy and copper and mickel.
The converter lining service life is to influence the successional key factor of process for making.
In order to obtain the yield of bigger, converter is pursued longer furnace life within a very long time, and furnace life can even reach
To more than 10000 heats.But at present in process for making, the lining durability at converter bottom position is difficult to and shaft furnace lining
Service life synchronizes, and according to statistics, most converters are after furnace life reaches 2000 heats, it is difficult to ensure to reach good in the full stove labour of converter
Good bottom blowing effect, bottom blowing effect is deteriorated, or even directly abandons bottom blowing.To find out its cause, mainly in early period in furnace life, bottom blowing region
Or the erosion of furnace bottom threatens furnace life, and bottom blowing gun is obstructed after fettling, it is difficult to the bottom blowing effect for ensureing full furnace life, due to bottom blowing effect
It is difficult to ensure, dephosphorization effect is caused to be difficult to ensure, blowing end point carbon oxygen product and Oxygen Content in Liquid Steel are higher, and clinker FeO contents are high, take off
Oxygen agent consumption increases, and influences later process and operates and directly affect end product quality.
The key to solve the above problems is quick-replaceable converter bottom, is repaired rather than just to furnace bottom, maintains
Production.In the technique of quick-replaceable converter bottom, main difficult point is the magnesia carbon refractory built by laying bricks or stones on furnace bottom box hat
The density and life problems of filler, service life are wanted in gap between the magnesia carbon refractory built by laying bricks or stones on the box hat of shaft position
Thousands of stoves will be reached by asking；And in the prior art, the basic gravity flow for leaning on filler, coming closely knit gap can not be true due to illiquidity
Protect filler density, cause the service life of filler relatively low, or even only more than ten stoves, it is therefore desirable to it is a kind of can mechanical pump pressure injection and
Service life high converter bottom hot swap seam refractory material.
Invention content
In view of the above existing problems in the prior art, the present invention provides a kind of converter bottom hot swap seam refractory materials
And construction method, to improve the density and service life of filler.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of converter bottom hot swap seam refractory material of the present invention, the seam refractory material form portion by first
Divide and the second component part configures, first component part is by weight percentage：63~85wt% of magnesia, pitch 0
~10wt%, 0~10wt% of graphite, 2~17wt% of metal powder；Second component part includes first component part
The curing agent of the resin of 5~15wt% of weight, the alcohols material of 5~15wt% and 0.5-1.5wt%；The seam fire resisting
Material it is characterized in that：Self drainage >=85%, falling sphere time≤15s, high temperature break resistant intensity (1400 DEG C × 0.5h) >=9MPa.
Further, the magnesia is by one or both of fused magnesite and magnesite clinker arbitrary proportion mixture group
At.
Further, in the magnesia MgO content>95wt%.
Further, the metal powder is by one or both of metallic aluminium powder and metallic silicon power arbitrary proportion mixture
Composition.
Further, the pitch is one or two kinds of arbitrary proportion by ultra-temperature pitch powder and ultra-temperature pitch ball
Mixture forms.
Preferably, the resin is a kind of composition in phenolic resin or epoxy resin.
Preferably, the alcohols material is a kind of composition in methanol, ethyl alcohol, ethylene glycol.
Preferably, the curing agent is a kind of composition in hexamethylenetetramine or toluenesulfonic acid.
A kind of construction method of converter bottom hot swap seam refractory material of the present invention, the method is to above-mentioned
Seam refractory material is constructed, the method includes：
1) magnesia, pitch, graphite, metal powder and curing agent are put into the dry-mixed 3~8min of blender；Addition is pre-mixed
Even resin and alcohols material is stirred for 6~10min of wet mixing, and test application property meets performance requirement, and to obtain required seam resistance to
Fiery material；
2) the seam refractory material being stirred in blender is put to the secondary hopper of pump machine；
3) the seam refractory material is used into mechanical pump pressure-casting construction mode, is pumped into the magnesium built by laying bricks or stones on activity bottom of boiler box hat
In gap between the magnesia carbon refractory built by laying bricks or stones on carbide refractory and shaft position box hat.
Further, for the refractory material in construction, control material temperature is at 15~45 DEG C；
Further, the temperature for the magnesia carbon refractory built by laying bricks or stones on the box hat of the shaft position is between 0~900 DEG C.
The beneficial effects of the invention are as follows：
A kind of converter bottom hot swap seam refractory material of the present invention is higher because having good self drainage
High temperature break resistant intensity and the features such as preferable resistance to slag action, seam refractory material high-temperature heating dense packing effect is existed
Newly in the seam between furnace bottom and shaft, it can guarantee that new furnace bottom and shaft are strong bonded, prevent the accidents such as bleed-out from occurring, and meet
The requirement of converter bottom 1000~2000 stove of service life when new stove is used as a servant and stove labour mid-term is replaced, ensures that converter is normally kept the safety in production.
Specific implementation mode
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
A kind of converter bottom hot swap seam refractory material of the present invention, the seam refractory material form portion by first
Divide and the second component part configures, first component part is by weight percentage：63~85wt% of magnesia, pitch 0
~10wt%, 0~10wt% of graphite, 2~17wt% of metal powder；Second component part includes first component part
The curing agent of the resin of 5~15wt% of weight, the alcohols material of 5~15wt% and 0.5-1.5wt%；The seam fire resisting
Material it is characterized in that：Self drainage >=85%, falling sphere time≤15s, high temperature break resistant intensity (1400 DEG C × 0.5h) >=9MPa.
Further, the magnesia is by one or both of fused magnesite and magnesite clinker arbitrary proportion mixture group
At.
Further, in the magnesia MgO content>95wt%.
Further, the metal powder is by one or both of metallic aluminium powder and metallic silicon power arbitrary proportion mixture
Composition.
Further, the pitch is one or two kinds of arbitrary proportion by ultra-temperature pitch powder and ultra-temperature pitch ball
Mixture forms.
Preferably, the resin is a kind of composition in phenolic resin or epoxy resin.
Preferably, the alcohols material is a kind of composition in methanol, ethyl alcohol, ethylene glycol.
Preferably, the curing agent is a kind of composition in hexamethylenetetramine or toluenesulfonic acid.
A kind of construction method of converter bottom hot swap seam refractory material of the present invention, the method is to above-mentioned
Seam refractory material is constructed, the method includes：
1) magnesia, pitch, graphite, metal powder and curing agent are put into the dry-mixed 3~8min of blender；Addition is pre-mixed
Even resin and alcohols material is stirred for 6~10min of wet mixing, and test application property meets performance requirement, and to obtain required seam resistance to
Fiery material；
2) the seam refractory material being stirred in blender is put to the secondary hopper of pump machine；
3) the seam refractory material is used into mechanical pump pressure-casting construction mode, is pumped into the magnesium built by laying bricks or stones on activity bottom of boiler box hat
In gap between the magnesia carbon refractory built by laying bricks or stones on carbide refractory and shaft position box hat.
For the refractory material in construction, control material temperature is at 15~45 DEG C；
The temperature for the magnesia carbon refractory built by laying bricks or stones on the box hat of the shaft position is between 0~900 DEG C.
When the seam refractory material is constructed in winter, bonding agent carries out pre-add heat treatment in advance,；During pump pressure note,
The device externals such as blender and pumping line are equipped with heating device, it is therefore an objective to which the viscosity for reducing bonding agent increases the flowing of material
Property, reduce difficulty of construction.
Embodiment one：
A kind of converter bottom hot swap seam refractory material of the embodiment of the present invention one, by the first component part and second
Component part configures, wherein the first component part is by weight percentage：Fused magnesite 82wt%, ultra-temperature pitch ball
3wt%, graphite 4wt%, metallic aluminium powder 9wt%, metallic silicon power 2wt%；Second component part includes thermosetting phenolic resin, second
Glycol and hexamethylenetetramine, thermosetting phenolic resin account for the 9wt% of the weight of the first component part, and ethylene glycol accounts for first group
At the 12wt% of part, curing agent accounts for the 0.5w t% of the first component part.
Further, in the embodiment of the present invention one, magnesia maximum particle diameter is 8mm, and content of MgO is in magnesia particle
98wt%.
After the magnesia of above-mentioned weight proportion, pitch, graphite, metal powder and curing agent are put into the dry-mixed 3min of blender, add
Enter to be pre-mixed uniform resin and alcohols material, required seam refractory material had both been obtained after stirring 8min.
The physical performance index for the seam refractory material being equipped with using the above method and substance is：Self drainage is 92%, is fallen
The ball time is 4.91s, and (1400 DEG C × 0.5h) of high temperature break resistant intensity is 11.87MPa.
If constructing in winter, temperature is relatively low, and thermosetting phenolic resin need to carry out water bath processing in advance, resin temperature after processing
About 60 DEG C of degree.
Above-mentioned seam refractory material, in construction, the mode that pump pressure note may be used carries out, during being pumped note,
The device externals such as blender and pumping line need to be heated, and ensure material temperature at 15~45 DEG C.
After converter thermal-state has replaced furnace bottom living, mechanical pump pressure-casting construction mode may be used by above-mentioned seam refractory material
It is pumped into the magnesia carbon refractory built by laying bricks or stones on activity bottom of boiler box hat by live furnace bottom bottom of converter and is built by laying bricks or stones on the box hat of shaft position
In annular gap between magnesia carbon refractory, the average temperature for the magnesia carbon refractory built by laying bricks or stones on the box hat of shaft position at this time
At 650 DEG C or so, seam refractory material enters behind annulus through high-temperature heating burning solidification degree, finally being capable of dense packing effect guarantor
It is strong bonded to demonstrate,prove new furnace bottom and shaft, prevents the accidents such as bleed-out from occurring, and meets that converter bottom use as a servant in new stove and stove uses as a servant mid-term more
The requirement of 1000~2000 stove of service life when changing ensures that converter is normally kept the safety in production.
Embodiment two：
A kind of converter bottom hot swap seam refractory material of the embodiment of the present invention two, by the first component part and second
Component part configures, wherein the first component part is by weight percentage：Magnesite clinker 75wt%, ultra-temperature pitch ball
7wt%, graphite 4wt%, graphite 6wt%, metallic aluminium powder 9wt%, metallic silicon power 3wt%；Second component part includes asphalt mixtures modified by epoxy resin
Fat, ethylene glycol and hexamethylenetetramine, epoxy resin account for the 10wt% of the weight of the first component part, and ethylene glycol accounts for first group
At the 12wt% of part, curing agent accounts for the 1wt% of the first component part.
Further, the magnesia maximum particle diameter of the embodiment of the present invention two is 5mm, content of MgO is 96wt% in magnesia particle.
After the magnesia of above-mentioned weight proportion, pitch, graphite, metal powder and curing agent are put into the dry-mixed 6min of blender, add
Enter to be pre-mixed uniform resin and alcohols material, required seam refractory material had both been obtained after stirring 8min.
If constructing in winter, temperature is relatively low, and thermosetting phenolic resin need to carry out water bath processing in advance, resin temperature after processing
About 60 DEG C of degree.
The physical performance index for the seam refractory material being equipped with using the above method and substance is：Self drainage is 86.33%,
The falling sphere time is 9.32s, and (1400 DEG C × 0.5h) of high temperature break resistant intensity is 10.38MPa.
Above-mentioned seam refractory material, in construction, the mode that pump pressure note may be used carries out, during being pumped note,
The device externals such as blender and pumping line need to be heated, and ensure material temperature at 15~45 DEG C.
After converter thermal-state has replaced furnace bottom living, mechanical pump pressure-casting construction mode may be used by above-mentioned seam refractory material
It is pumped into the magnesia carbon refractory built by laying bricks or stones on activity bottom of boiler box hat by live furnace bottom bottom of converter and is built by laying bricks or stones on the box hat of shaft position
In annular gap between magnesia carbon refractory, the average temperature for the magnesia carbon refractory built by laying bricks or stones on the box hat of shaft position at this time
At 200 DEG C or so, seam refractory material does not occur to burn and directly cure degree, equally also being capable of the new furnace bottom of dense packing effect guarantee
With shaft firm connection, the accidents such as bleed-out are prevented, and meet converter bottom service life 1000 when new stove is used as a servant and stove labour mid-term is replaced
The requirement of~2000 stoves ensures that converter is normally kept the safety in production.
Embodiment provided above is the better embodiment of the present invention, only is used for facilitating illustrating the present invention, not to this hair
It is bright to make any form of restriction, any those of ordinary skill in the art, if not departing from the put forward skill of the present invention
In the range of art feature, using the equivalent embodiment for locally changing or modifying made by disclosed technology contents, and
Without departing from the technical feature content of the present invention, in the range of still falling within the technology of the present invention feature.
Claims (7)
1. a kind of converter bottom hot swap seam refractory material, which is characterized in that the seam refractory material is formed by first
Part and the second component part configure, and first component part is by weight percentage：63~85wt% of magnesia, pitch
0~10wt%, 0~10wt% of graphite, 2~17wt% of metal powder；Second component part includes first component part
The resin of 5~15wt% of weight, the alcohols material of 5~15wt% and 0.5-1.5wt% curing agent；The seam is resistance to
Fiery material it is characterized in that：Self drainage >=85%, falling sphere time≤15s, high temperature break resistant intensity (1400 DEG C × 0.5h) >=9MPa.
2. a kind of converter bottom hot swap seam refractory material according to claim 1, which is characterized in that the magnesia
It is made of one or both of fused magnesite and magnesite clinker arbitrary proportion mixture；The content of MgO in the magnesia>
95wt%.
3. a kind of converter bottom hot swap seam refractory material according to claim 1, which is characterized in that the metal
Powder is to be made of one or both of metallic aluminium powder and metallic silicon power arbitrary proportion mixture；The pitch is to be dripped by superhigh temperature
One or two kinds of arbitrary proportion mixture of green powder and ultra-temperature pitch ball forms.
4. a kind of converter bottom hot swap seam refractory material according to claim 1, which is characterized in that the resin
For a kind of composition in phenolic resin or epoxy resin；The alcohols material is a kind of composition in methanol, ethyl alcohol, ethylene glycol；
The curing agent is a kind of composition in hexamethylenetetramine or toluenesulfonic acid.
5. a kind of construction method of converter bottom hot swap seam refractory material, which is characterized in that the method is to right
It is required that 1-4 any one of them seam refractory materials were constructed, the method includes：
1) magnesia, pitch, graphite, metal powder and curing agent are put into the dry-mixed 3~8min of blender；Addition is pre-mixed uniformly
Resin and alcohols material are stirred for 6~10min of wet mixing, and test application property meets performance requirement and obtains required seam fire proofed wood
Material；
2) the seam refractory material being stirred in blender is put to the secondary hopper of pump machine；
3) the seam refractory material is used into mechanical pump pressure-casting construction mode, is pumped into the magnesium carbonaceous built by laying bricks or stones on activity bottom of boiler box hat
In gap between the magnesia carbon refractory built by laying bricks or stones on refractory material and shaft position box hat.
6. a kind of construction method of converter bottom hot swap seam refractory material according to claim 5, feature exist
In for the refractory material in construction, control material temperature is at 15~45 DEG C.
7. a kind of construction method of converter bottom hot swap seam refractory material according to claim 5, feature exist
In the temperature for the magnesia carbon refractory built by laying bricks or stones on the box hat of the shaft position is between 0~900 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299227.9A CN108439958B (en) | 2018-04-04 | 2018-04-04 | Joint refractory material for heat exchange of converter bottom and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299227.9A CN108439958B (en) | 2018-04-04 | 2018-04-04 | Joint refractory material for heat exchange of converter bottom and construction method |
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| Publication Number | Publication Date |
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| CN108439958A true CN108439958A (en) | 2018-08-24 |
| CN108439958B CN108439958B (en) | 2021-07-23 |
Family
ID=63199350
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626966A (en) * | 2018-12-26 | 2019-04-16 | 武汉如星科技有限公司 | A kind of environment-friendly type Fast Sintering Large face repair material of converter and preparation method thereof |
| CN110483021A (en) * | 2019-09-12 | 2019-11-22 | 郑州金利窑炉工程有限公司 | A kind of grouting material and its application method for converter |
| CN113651601A (en) * | 2021-09-13 | 2021-11-16 | 济南鲁东耐火材料有限公司 | Converter with replaceable converter bottom and construction method for primary building |
| CN114231689A (en) * | 2021-12-22 | 2022-03-25 | 济南鲁东耐火材料有限公司 | Press-in device, test device and test method for converter live furnace bottom filler |
| CN115537626A (en) * | 2022-09-14 | 2022-12-30 | 首钢集团有限公司 | Magnesium-carbon refractory material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105367086A (en) * | 2014-08-21 | 2016-03-02 | 青岛炜烨锻压机械有限公司 | High efficiency repairing material and preparation technology thereof |
-
2018
- 2018-04-04 CN CN201810299227.9A patent/CN108439958B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105367086A (en) * | 2014-08-21 | 2016-03-02 | 青岛炜烨锻压机械有限公司 | High efficiency repairing material and preparation technology thereof |
Non-Patent Citations (1)
| Title |
|---|
| 锦州市好为尔保温材料有限公司编著: "《酚醛泡沫建筑防火保温施工》", 31 January 2005, 中国建材工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626966A (en) * | 2018-12-26 | 2019-04-16 | 武汉如星科技有限公司 | A kind of environment-friendly type Fast Sintering Large face repair material of converter and preparation method thereof |
| CN110483021A (en) * | 2019-09-12 | 2019-11-22 | 郑州金利窑炉工程有限公司 | A kind of grouting material and its application method for converter |
| CN113651601A (en) * | 2021-09-13 | 2021-11-16 | 济南鲁东耐火材料有限公司 | Converter with replaceable converter bottom and construction method for primary building |
| CN114231689A (en) * | 2021-12-22 | 2022-03-25 | 济南鲁东耐火材料有限公司 | Press-in device, test device and test method for converter live furnace bottom filler |
| CN115537626A (en) * | 2022-09-14 | 2022-12-30 | 首钢集团有限公司 | Magnesium-carbon refractory material and preparation method thereof |
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| Publication number | Publication date |
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| CN108439958B (en) | 2021-07-23 |
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