CN109809825A - A kind of pyrophyllite smelts blocking anhydrous stemming and preparation method thereof - Google Patents
A kind of pyrophyllite smelts blocking anhydrous stemming and preparation method thereof Download PDFInfo
- Publication number
- CN109809825A CN109809825A CN201910145277.6A CN201910145277A CN109809825A CN 109809825 A CN109809825 A CN 109809825A CN 201910145277 A CN201910145277 A CN 201910145277A CN 109809825 A CN109809825 A CN 109809825A
- Authority
- CN
- China
- Prior art keywords
- parts
- pyrophyllite
- blocking
- pyrophillite
- smelts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a kind of pyrophyllites to smelt blocking anhydrous stemming, it is characterised in that: including following weight parts: particulate pyrophyllite: 10~15 parts of coarse grain pyrophyllites: 8~12 parts of corundum: 15~20 parts of carbonaceous raw materials: 5~10 parts of silicon carbide: 5~10 parts of silicon nitrides: 10~15 parts of clays: 5~10 parts of bonding agents: 12~16 parts；The particulate pyrophillite is the pyrophillite that partial size is less than 1mm；The coarse grain pyrophillite is pyrophillite of the partial size between 1~3mm.Sewage stemming prepared by the present invention has formula simple, and manufacture craft is simple, it by pyrophillite as frame, is added into wherein, the waste material of pyrophillite itself is more, it is at low cost, by the compatible use of inventive formulation, the normal use for having normal anhydrous stemming can be made.
Description
Technical field
The present invention relates to a kind of sewage stemming, more particularly to a kind of pyrophyllite smelt blocking anhydrous stemming and
Preparation method.
Background technique
Anhydrous stemming refers to using tar, resin etc. as adhesive, and with corundum, bauxite, clay, silicon carbide, coke
Powder etc. is the stemming of raw material production.Then anhydrous charcoal element stemming pug mill doctor system puts block (clay into first draining the oil when rolling
And pitch), powder (coke powder and chamotte powder) is put after to be comminuted again, presses mixing, it can mud extraction after complying with standard.
Anhydrous stemming factory formula in the prior art is complex, mostly mineral material.
Summary of the invention
It is stifled in view of the deficiencies of the prior art, the present invention intends to provide a kind of simple pyrophyllite smelting of formula
Plug anhydrous stemming and preparation method thereof.
To achieve the above object, the present invention provides the following technical scheme that
A kind of pyrophyllite smelting blocking anhydrous stemming,
Including following weight parts:
Particulate pyrophyllite: 10~15 parts
Coarse grain pyrophyllite: 8~12 parts
Corundum: 15~20 parts
Carbonaceous raw material: 5~10 parts
Silicon carbide: 5~10 parts
Silicon nitride: 10~15 parts
Clay: 5~10 parts
Bonding agent: 12~16；
The particulate pyrophillite is the pyrophillite that partial size is less than 1mm；
The coarse grain pyrophillite is pyrophillite of the partial size between 1~3mm.
As a further improvement of the present invention:
The corundum partial size is less than 3mm.
As a further improvement of the present invention:
The carbonaceous raw material is the coke graphite of 100 mesh.
As a further improvement of the present invention:
The silicon carbide is the silicon carbide of 325 mesh.
As a further improvement of the present invention:
The silicon nitride is the silicon nitride of 325 mesh.
As a further improvement of the present invention:
The clay is the clay of 325 mesh.
As a further improvement of the present invention:
The bonding agent is tar resin.
As a further improvement of the present invention:
Step 1: raw material is proportionally weighed；
Step 2: particulate pyrophyllite, coarse grain pyrophyllite, corundum, carbonaceous raw material, silicon carbide, silicon nitride, clay are carried out
Mixed grinding at 20 DEG C~30 DEG C,
It carries out being added 65 DEG C~75 DEG C of intelligence；
Step 3: adhesive is added and grinding is sufficiently stirred 40~80 minutes；
Step 4: it is added in mold and suppresses；
Step 5: by the product of compacting at 500 DEG C~1300 DEG C sinter molding.
1) pyrophyllite is a kind of aluminium silicate mineral, refractoriness with higher, and has preferable thermal expansivity,
1450 degree expand to rapid, and 1500 degree reach 4.2%, using this feature, so that stemming is combined closely at high temperature.
2) corundum fusing point is up to 2000 DEG C -2030 DEG C due to having the performances such as high temperature resistant, corrosion-resistant, high-intensitive, corundum products
Air-tightness is good, tight airtight at high temperature, using these features of corundum, high temperature skeleton and airtight material as stemming
Material
3) coke graphite (graphitization degree of coke) refers to coke at high temperature or reheating mistake
Cheng Zhong, non-graphite charcoal are changed into class graphite charcoal.It is one of the detection project of coke microscopic analysis.The structure of coke is between without fixed
It is the Turbostratic of unordered overlapping between shape structure and graphite-structure, degree of graphitization only could use X at 1000 DEG C or more
X ray diffractometer x is tested, characteristic, that is, high-strength acid resistance of coke graphite powder, anticorrosive and 3000 DEG C of high temperature resistant and resistance to low
- 204 DEG C of temperature, while its compression strength is greater than 800kg/Cm2, and anti-oxidant, weightlessness 1%, rebound degree in 450 DEG C of air
For 15-50% (density 1.1-1.5).
The features such as using its high temperature resistant in stemming, corrosion resistance is strong, and compression strength is big, anti-oxidant, it is resistance to can be improved stemming
Fiery degree and compression strength, corrosion resistance.
4) silicon carbide (SiC) (is needed plus is eaten when production green silicon carbide with quartz sand, petroleum coke (or coal tar), sawdust
Salt) etc. raw materials formed by resistance furnace pyrolytic semlting.There is also rare mineral, Mo Sangshi in the Nature for silicon carbide.Silicon carbide
Also known as moissanite.In the non-oxidized substances high-tech refractory raw material such as contemporary C, N, B, silicon carbide is most widely used, most economical
One kind being properly termed as corundum or fire sand.The silicon carbide of Chinese industrial production at present is divided into black silicon carbide and green carbonization
Two kinds of silicon, be hexagonal, and specific gravity is 3.20~3.25, and microhardness is 2840~3320kg/mm2.Silicon carbide is due to changing
It is small to learn stable performance, thermal coefficient height, thermal expansion coefficient, to manufactured high grade refractory, resistance to thermal shock, small in size, weight
Light and intensity is high, energy-saving effect is good.Low grade silicon carbide (containing SiC about 85%) is fabulous deoxidier, can accelerate to make steel with it
Speed, and convenient for control chemical component, improve the quality of steel.The hardness of silicon carbide is very big, and Mohs' hardness is 9.5 grades, is only second to
Most hard diamond (10 grades) in the world have excellent heating conduction, can be anti-oxidant when high temperature.
Using silicon carbide These characteristics, hardness can be improved in stemming, reduces and shrinks, and resistance to thermal shock improves the high 5) nitrogen of intensity
SiClx is a kind of important structural ceramic material.It is a kind of superhard substance, itself has lubricity, and wear-resistant, for original
Sub- crystal；It is anti-oxidant when high temperature.And it can also resist cooling thermal impact, be heated to 1000 DEG C or more in air, quick refrigeration
Sharply heat again, will not fragmentation, silicon nitride is used as high grade refractory, it is used for refractory material such as to make SI3N4-SIC in conjunction with sic
In positions such as blast-furnace shafts；Such as make SI3N4-BN material in conjunction with BN, separates ring for horizontal casting.SI3N4-BN system is horizontal even
Casting separation ring is a kind of fine texture ceramic material, and structure is uniform, has high mechanical strength.Thermal shock resistance is good, and will not be by
Molten steel is wet, meets the technique requirement of continuous casting, and silicon nitride ceramic material has thermal stability height, oxidation resistance strong and product
The excellent performances such as accuracy to size height.Since silicon nitride is the strong high covalent compound of key, and oxide can be formed in air
Protective film, so also having good chemical stability, 1200 DEG C or less not oxidized, and 1200~1600 DEG C of generation protective films can
It prevents from further aoxidizing, and is not infiltrated or corroded by a variety of molten metals such as aluminium, lead, tin, silver, brass, nickel or alloy,
Its thermal stability can be improved in stemming, keep preferable accuracy to size.
6) chemical composition of clay, mineral composition and particle composition decide the processing performance of clay:
Plasticity；Clay forms walk after mixing with suitable water or other solvents, and under the effect of external force, walk occurs
It deforms but does not crack, after external force disperses, be still able to maintain original shape invariance, this property of clay is known as plasticity.
Associativity, the associativity of clay refer to clay combination non-plastic raw material and form good plastic walk and have one
The ability of fixed dry tenacity.The associativity of clay is for partly at the drying of mouth, repaired biscuit and glazing, there is important influences.It is glutinous
Native dirt associativity combines the size of the binding force of poor material to be determined by it, and the kind of the size of binding force and clay mineral
The factors such as class, structure are related.In general, the strong clay of plasticity, binding force is also big, when clay is in the process of heating and calcining
In, after reaching certain temperature (800 DEG C~900 DEG C), when continuing to increase temperature, eutectic substance starts to melt in clay, liquid phase
Occur and gradually increase, be filled between solid particle, due to the effect of liquid phase surface tension, so that no cofusing particle further leans on
Hold together, cause the contraction of volume sharply, porosity decline, density improves, and temperature when this corresponding volume starts change dramatically claims
To start sintering temperature.
When temperature continues to increase, contraction will constantly increase to maximum value, and the porosity minimizes value, and density reaches maximum
Value, clay is fully sintered, and corresponding temperature is known as sintering temperature at this time.
The characteristics of being declined in stemming using each caking property of clay plasticity and the high temperature sintering porosity, is improved and other fire resistings
The cohesive force of material reduces the high temperature porosity
7) tar resin is a kind of complex mixture of the hydrocarbon of high aromaticity, and the overwhelming majority is for band side chain or not
Polycyclic, fused ring compound and oxygen-containing, sulphur, nitrogen heterocyclic compound with side chain, and contain a small amount of aliphatic hydrocarbon, cycloalkane and insatiable hunger
And hydrocarbon, being also entrained with coal dust, burnt dirt and pyrolytic carbon, tar resin is carbon product adhesive, shaped fuel adhesive, magnesium carbon
Brick, needle coke, carbon fiber；The adhesive of refractory material.
The use of tar resin is to bond all kinds of refractory materials in stemming, becomes the association of a plasticity,
Convenient for the tapping hole of stemming blocking blast furnace.
Specific embodiment
Embodiment one:
Formula design
| Serial number | Title | Specification | Weight ratio | Remarks |
| 1 | Pyrophyllite | 1mm partial size | 12 | |
| 2 | Pyrophyllite | 3mm partial size | 10 | |
| 3 | Corundum | 3mm partial size | 18 | |
| 4 | Carbonaceous raw material | 100 mesh | 7 | Coke graphite |
| 5 | Silicon carbide | 325 mesh | 18 | |
| 6 | Silicon nitride | 325 mesh | 12 | |
| 7 | Clay | 325 mesh | 8 | |
| 8 | Bonding agent | Tar resin | 15 |
Preparation method:
Step 1: raw material is proportionally weighed；
Step 2: particulate pyrophyllite, coarse grain pyrophyllite, corundum, carbonaceous raw material, silicon carbide, silicon nitride, clay are carried out
Mixed grinding at 30 DEG C,
It carries out being added 75 DEG C of intelligence；
Step 3: adhesive is added, grinding 80 minutes is sufficiently stirred；
Step 4: it is added in mold and suppresses；
Step 5: by the product of compacting at 1000 DEG C sinter molding.
Performance test:
1) pyrophyllite is a kind of aluminium silicate mineral, refractoriness with higher, and has preferable thermal expansivity,
1450 degree expand to rapid, and 1500 degree reach 4.2%, using this feature, so that stemming is combined closely at high temperature.
2) corundum fusing point is up to 2000 DEG C -2030 DEG C due to having the performances such as high temperature resistant, corrosion-resistant, high-intensitive, corundum products
Air-tightness is good, tight airtight at high temperature, using these features of corundum, high temperature skeleton and airtight material as stemming
Material
3) coke graphite (graphitization degree of coke) refers to coke at high temperature or reheating mistake
Cheng Zhong, non-graphite charcoal are changed into class graphite charcoal.It is one of the detection project of coke microscopic analysis.The structure of coke is between without fixed
It is the Turbostratic of unordered overlapping between shape structure and graphite-structure, degree of graphitization only could use X at 1000 DEG C or more
X ray diffractometer x is tested, characteristic, that is, high-strength acid resistance of coke graphite powder, anticorrosive and 3000 DEG C of high temperature resistant and resistance to low
- 204 DEG C of temperature, while its compression strength is greater than 800kg/Cm2, and anti-oxidant, weightlessness 1%, rebound degree in 450 DEG C of air
For 15-50% (density 1.1-1.5).
The features such as using its high temperature resistant in stemming, corrosion resistance is strong, and compression strength is big, anti-oxidant, it is resistance to can be improved stemming
Fiery degree and compression strength, corrosion resistance.
4) silicon carbide (SiC) (is needed plus is eaten when production green silicon carbide with quartz sand, petroleum coke (or coal tar), sawdust
Salt) etc. raw materials formed by resistance furnace pyrolytic semlting.There is also rare mineral, Mo Sangshi in the Nature for silicon carbide.Silicon carbide
Also known as moissanite.In the non-oxidized substances high-tech refractory raw material such as contemporary C, N, B, silicon carbide is most widely used, most economical
One kind being properly termed as corundum or fire sand.The silicon carbide of Chinese industrial production at present is divided into black silicon carbide and green carbonization
Two kinds of silicon, be hexagonal, and specific gravity is 3.20~3.25, and microhardness is 2840~3320kg/mm2.Silicon carbide is due to changing
It is small to learn stable performance, thermal coefficient height, thermal expansion coefficient, to manufactured high grade refractory, resistance to thermal shock, small in size, weight
Light and intensity is high, energy-saving effect is good.Low grade silicon carbide (containing SiC about 85%) is fabulous deoxidier, can accelerate to make steel with it
Speed, and convenient for control chemical component, improve the quality of steel.The hardness of silicon carbide is very big, and Mohs' hardness is 9.5 grades, is only second to
Most hard diamond (10 grades) in the world have excellent heating conduction, can be anti-oxidant when high temperature.
Using silicon carbide These characteristics, hardness can be improved in stemming, reduces and shrinks, and resistance to thermal shock improves the high 5) nitrogen of intensity
SiClx is a kind of important structural ceramic material.It is a kind of superhard substance, itself has lubricity, and wear-resistant, for original
Sub- crystal；It is anti-oxidant when high temperature.And it can also resist cooling thermal impact, be heated to 1000 DEG C or more in air, quick refrigeration
Sharply heat again, will not fragmentation, silicon nitride is used as high grade refractory, it is used for refractory material such as to make SI3N4-SIC in conjunction with sic
In positions such as blast-furnace shafts；Such as make SI3N4-BN material in conjunction with BN, separates ring for horizontal casting.SI3N4-BN system is horizontal even
Casting separation ring is a kind of fine texture ceramic material, and structure is uniform, has high mechanical strength.Thermal shock resistance is good, and will not be by
Molten steel is wet, meets the technique requirement of continuous casting, and silicon nitride ceramic material has thermal stability height, oxidation resistance strong and product
The excellent performances such as accuracy to size height.Since silicon nitride is the strong high covalent compound of key, and oxide can be formed in air
Protective film, so also having good chemical stability, 1200 DEG C or less not oxidized, and 1200~1600 DEG C of generation protective films can
It prevents from further aoxidizing, and is not infiltrated or corroded by a variety of molten metals such as aluminium, lead, tin, silver, brass, nickel or alloy,
Its thermal stability can be improved in stemming, keep preferable accuracy to size.
6) chemical composition of clay, mineral composition and particle composition decide the processing performance of clay:
Plasticity；Clay forms walk after mixing with suitable water or other solvents, and under the effect of external force, walk occurs
It deforms but does not crack, after external force disperses, be still able to maintain original shape invariance, this property of clay is known as plasticity.
Associativity, the associativity of clay refer to clay combination non-plastic raw material and form good plastic walk and have one
The ability of fixed dry tenacity.The associativity of clay is for partly at the drying of mouth, repaired biscuit and glazing, there is important influences.It is glutinous
Native dirt associativity combines the size of the binding force of poor material to be determined by it, and the kind of the size of binding force and clay mineral
The factors such as class, structure are related.In general, the strong clay of plasticity, binding force is also big, when clay is in the process of heating and calcining
In, after reaching certain temperature (800 DEG C~900 DEG C), when continuing to increase temperature, eutectic substance starts to melt in clay, liquid phase
Occur and gradually increase, be filled between solid particle, due to the effect of liquid phase surface tension, so that no cofusing particle further leans on
Hold together, cause the contraction of volume sharply, porosity decline, density improves, and temperature when this corresponding volume starts change dramatically claims
To start sintering temperature.
When temperature continues to increase, contraction will constantly increase to maximum value, and the porosity minimizes value, and density reaches maximum
Value, clay is fully sintered, and corresponding temperature is known as sintering temperature at this time.
The characteristics of being declined in stemming using each caking property of clay plasticity and the high temperature sintering porosity, is improved and other fire resistings
The cohesive force of material reduces the high temperature porosity
7) tar resin is a kind of complex mixture of the hydrocarbon of high aromaticity, and the overwhelming majority is for band side chain or not
Polycyclic, fused ring compound and oxygen-containing, sulphur, nitrogen heterocyclic compound with side chain, and contain a small amount of aliphatic hydrocarbon, cycloalkane and insatiable hunger
And hydrocarbon, being also entrained with coal dust, burnt dirt and pyrolytic carbon, tar resin is carbon product adhesive, shaped fuel adhesive, magnesium carbon
Brick, needle coke, carbon fiber；The adhesive of refractory material.
The use of tar resin is to bond all kinds of refractory materials in stemming, becomes the association of a plasticity,
Convenient for the tapping hole of stemming blocking blast furnace.
Sewage stemming prepared by the present invention has formula simple, and manufacture craft is simple, by pyrophillite as frame, leads to
Cross the addition of the pyrophillite of two kinds of different sizes, entire frame system can be made more tough, the waste material of pyrophillite itself compared with
It is more, it is at low cost, by the compatible use of inventive formulation, the normal use for having normal anhydrous stemming can be made.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of pyrophyllite smelts blocking anhydrous stemming, it is characterised in that:
Including following weight parts:
Particulate pyrophyllite: 10~15 parts
Coarse grain pyrophyllite: 8~12 parts
Corundum: 15~20 parts
Carbonaceous raw material: 5~10 parts
Silicon carbide: 5~10 parts
Silicon nitride: 10~15 parts
Clay: 5~10 parts
Bonding agent: 12~16 parts；
The particulate pyrophillite is the pyrophillite that partial size is less than 1mm；
The coarse grain pyrophillite is pyrophillite of the partial size between 1~3mm.
2. a kind of pyrophyllite according to claim 1 smelts blocking anhydrous stemming, it is characterised in that: the corundum partial size
Less than 3mm.
3. a kind of pyrophyllite according to claim 1 smelts blocking anhydrous stemming, it is characterised in that: the carbonaceous raw material
For the coke graphite of 100 mesh.
4. a kind of pyrophyllite according to claim 1 smelts blocking anhydrous stemming, it is characterised in that: the silicon carbide is
The silicon carbide of 325 mesh.
5. a kind of pyrophyllite according to claim 1 smelts blocking anhydrous stemming, it is characterised in that: the silicon nitride is
The silicon nitride of 325 mesh.
6. a kind of pyrophyllite according to claim 1 smelts blocking anhydrous stemming, it is characterised in that: the clay is
The clay of 325 mesh.
7. a kind of pyrophyllite according to claim 1 smelts blocking anhydrous stemming, it is characterised in that: the bonding agent is
Tar resin.
8. the preparation method that the pyrophyllite as described in claim 1 to 7 smelts blocking anhydrous stemming:
Step 1: raw material is proportionally weighed；
Step 2: particulate pyrophyllite, coarse grain pyrophyllite, corundum, carbonaceous raw material, silicon carbide, silicon nitride, clay are carried out at 20 DEG C
Mixed grinding at~30 DEG C,
It carries out being added 65 DEG C~75 DEG C of intelligence；
Step 3: adhesive is added and grinding is sufficiently stirred 40~80 minutes；
Step 4: it is added in mold and suppresses；
Step 5: by the product of compacting at 500 DEG C~1300 DEG C sinter molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145277.6A CN109809825A (en) | 2019-02-27 | 2019-02-27 | A kind of pyrophyllite smelts blocking anhydrous stemming and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145277.6A CN109809825A (en) | 2019-02-27 | 2019-02-27 | A kind of pyrophyllite smelts blocking anhydrous stemming and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109809825A true CN109809825A (en) | 2019-05-28 |
Family
ID=66607495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910145277.6A Pending CN109809825A (en) | 2019-02-27 | 2019-02-27 | A kind of pyrophyllite smelts blocking anhydrous stemming and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109809825A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111848144A (en) * | 2020-07-29 | 2020-10-30 | 郑州科信炉料有限公司 | Titanium-containing taphole repairing stemming and preparation method thereof |
| CN112142483A (en) * | 2020-09-18 | 2020-12-29 | 云南永昌硅业股份有限公司 | Preparation method of hole-plugging mud ball suitable for industrial silicon smelting silicon |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219900A (en) * | 2007-01-08 | 2008-07-16 | 宝山钢铁股份有限公司 | Bleed hole stemming and method for producing the same |
| CN102951909A (en) * | 2011-08-24 | 2013-03-06 | 中冶建筑研究总院有限公司 | Anhydrous stemming and preparation method thereof |
| CN108727042A (en) * | 2018-06-08 | 2018-11-02 | 武汉钢实炼铁修造安装有限公司 | A kind of novel blast-furnace tapping hole siliceous stemming and preparation method thereof |
-
2019
- 2019-02-27 CN CN201910145277.6A patent/CN109809825A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219900A (en) * | 2007-01-08 | 2008-07-16 | 宝山钢铁股份有限公司 | Bleed hole stemming and method for producing the same |
| CN102951909A (en) * | 2011-08-24 | 2013-03-06 | 中冶建筑研究总院有限公司 | Anhydrous stemming and preparation method thereof |
| CN108727042A (en) * | 2018-06-08 | 2018-11-02 | 武汉钢实炼铁修造安装有限公司 | A kind of novel blast-furnace tapping hole siliceous stemming and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111848144A (en) * | 2020-07-29 | 2020-10-30 | 郑州科信炉料有限公司 | Titanium-containing taphole repairing stemming and preparation method thereof |
| CN112142483A (en) * | 2020-09-18 | 2020-12-29 | 云南永昌硅业股份有限公司 | Preparation method of hole-plugging mud ball suitable for industrial silicon smelting silicon |
| CN112142483B (en) * | 2020-09-18 | 2022-08-02 | 云南永昌硅业股份有限公司 | Preparation method of hole-plugging mud ball suitable for industrial silicon smelting silicon |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108218408B (en) | Al (aluminum)4SiC4Bonded Al2O3Preparation method of-SiC composite material | |
| CN107973610B (en) | Silicon carbide ramming mass taking waste silicon carbide saggar as main raw material | |
| CN102731121B (en) | High-performance magnesium-aluminum-chromium composite spinel brick and manufacturing method thereof | |
| CN106946554B (en) | Anhydrous stemming | |
| CN101723685B (en) | Magnesia-alumina spinel stemming | |
| CN108484138A (en) | A kind of sliding plate brick and preparation method thereof adding composite alumina micro mist and carbon source | |
| CN108083765B (en) | Low-heat-conduction anti-stripping brick and preparation method thereof | |
| CN109836136A (en) | A kind of low-carbon aluminium-magnesia carbon brick and preparation method thereof | |
| CN107176845A (en) | A kind of method that regenerative magnesia-carbon brick is produced using waste and old refractory brick | |
| US7232780B2 (en) | Yttria containing high-density chrome based refractory composites | |
| CN110272264A (en) | Anhydrous stemming and preparation method for blast furnace | |
| CN106145976A (en) | Cement kiln andalusite mullite silicon carbide brick and preparation method thereof | |
| CN112358302B (en) | Self-repairing anhydrous stemming | |
| CN107324784A (en) | A kind of converter slag-resisting magnalium carbon slide brick and preparation method thereof | |
| CN109809825A (en) | A kind of pyrophyllite smelts blocking anhydrous stemming and preparation method thereof | |
| CN1050591C (en) | Fired microporous carbon-aluminium brick | |
| CN109851333B (en) | Nano sol combined wear-resisting plate for blast furnace main iron runner and preparation method and application thereof | |
| CN110483023A (en) | A kind of microporous corundum brick and preparation method thereof | |
| US4454239A (en) | Carbonaceous refractory composition for pressing brick shapes | |
| CN107162611A (en) | The resource recycle method of carbon containing waste and old refractory brick | |
| CN113754450A (en) | Preparation method of high-stability stemming for iron notch of COREX furnace | |
| CN103896606B (en) | A kind of blast furnace ceramic cup refractory materials | |
| CN107056260B (en) | Environment-friendly anhydrous stemming for blocking iron outlet of iron-making blast furnace and preparation method thereof | |
| CN104193359B (en) | A kind of special corundum gravity flow pouring material of stainless steel ladle and constructional method thereof | |
| US5024793A (en) | Method for manufacturing refractory oxide-carbon bricks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190528 |
|
| RJ01 | Rejection of invention patent application after publication |