CN108585894A - A kind of toughening calcium oxide refractory material and preparation method thereof - Google Patents
A kind of toughening calcium oxide refractory material and preparation method thereof Download PDFInfo
- Publication number
- CN108585894A CN108585894A CN201810432078.9A CN201810432078A CN108585894A CN 108585894 A CN108585894 A CN 108585894A CN 201810432078 A CN201810432078 A CN 201810432078A CN 108585894 A CN108585894 A CN 108585894A
- Authority
- CN
- China
- Prior art keywords
- calcium oxide
- toughening
- refractory material
- calcium
- preparation
- 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.)
- Withdrawn
Links
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
- C04B35/66—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
- C04B35/03—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
- C04B35/057—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 calcium oxide
-
- 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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- 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
- C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/526—Fibers characterised by the length of the fibers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5264—Fibers characterised by the diameter of the fibers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
- C04B2235/94—Products characterised by their shape
-
- 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
- C04B2235/95—Products characterised by their size, e.g. microceramics
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention relates to a kind of toughening calcium oxide refractory materials and preparation method thereof.Its technical solution is：Using the calcium oxide fine powder of the calcium oxide particle of 65~80wt% and 20~35wt% as raw material, the phenolic resin of the steel fibre and 2~6wt% of the additional 0.05~3wt% of raw material stirs 3~30 minutes, compression moulding；It is subsequently placed in vacuum equipment, is toasted 8~24 hours under the conditions of vacuum degree is 1~2kPa and temperature is 200~300 DEG C, it is cooling to get toughening calcium oxide refractory material.The calcium oxide particle is by calcium hydroxide powder: the mass ratio of additive is 1: (0.002~0.02) dispensing, wet-milling are filtered, drying, grinding, then is placed in Granulation Equipments and is granulated to get calcium hydroxide particle, drying；Then the calcium hydroxide particle after drying is kept the temperature under the conditions of 1400~1800 DEG C, calcium oxide particle is made.Present invention process is simple and production efficiency is high, and prepared product good thermal shock stability, elevated temperature strength are greatly and the ability of cleaning high-temp melt is strong.
Description
Technical field
The invention belongs to technical field of refractory materials.More particularly to a kind of toughening calcium oxide refractory material and its preparation side
Method.
Background technology
When smelting ultrapure clean metal and alloy, people are often desirable in smelting refractory material containing free oxidation
Calcium, during with melt contacts, free calcium oxide has the ability that abjection sulphur, phosphorus and absorbing oxide are mingled with.
In the refractory oxide known, the high-temperature stability of calcium oxide is best, its oxygenation into melt is also seldom.So calcium oxide-based
Refractory material is optimal smelting cylinder-packing.
But free calcium oxide is easy to aquation in an atmosphere, it is difficult to lay in, therefore, directly do fire proofed wood with calcium oxide
Material raw material can face very big difficulty.For making steel working lining, currently used way is straight during preparing refractory material
It connects and introduces a part of lime stone, i.e. CaCO3, lime stone is allowed decomposition in situ and to form CaO and stomata during baking is with use.
Using this technology, material can be made to be entirely free of free CaO before baking, thoroughly avoided because the presence of free CaO is drawn
The aquation problem risen.Simultaneously, moreover it is possible to after ensureing that liner in dundish has certain porosity to meet molten steel insulation and casting
The needs of packet are turned over, and the CaO that lime stone pyrolytic obtains has very high activity, is conducive in de- S, de- P and absorption steel
It is mingled with.And porous structure is formed using cylinder-packing refractory material prepared by the technology at high temperature, to be reduced in casting process
The temperature drop of molten steel in tundish has apparent insulation effect.But the refractory material prepared using this technology, calcium oxide are contained
Amount is generally 50% hereinafter, the content of magnesia is more than half, because excessively high lime stone addition will cause the intensity of material
Drastically decline at high temperature, cannot be satisfied and smelt needs.But the deficiency of calcium oxide content will cause it to purify molten steel in material
It is restricted with the effect of alloy molten solution.Meanwhile directly using lime stone for raw material in raw material, melt in smelting process can be caused
Carbon content increase.
Preparation in relation to calcia material also studies have reported that, be using calcium oxide as primary raw material, be added compound rare-earth, oxygen
Change the substances such as titanium, iron oxide, aluminium oxide and silica as water resistant agent and agglutinant, additional bonding agent, in high temperature after molding
Under be sintered.Calcia material is prepared using this technology, the process is more complicated, while can also reduce material and metal bath
Or stability when aluminium alloy contact, such as：Iron oxide is added and silica may result in the increase of total oxygen content in melt, because
It can be supplied oxygen to melt when with high-temperature fusant contact process for iron oxide and silica.Meanwhile the coefficient of thermal expansion of calcium oxide compared with
Greatly, leading to calcium oxide refractory material, there are another questions, i.e., its thermal shock resistance is poor, and service life is relatively low.
Invention content
The present invention is directed to overcome the shortage of prior art, it is therefore an objective to provide a kind of simple for process and high toughening oxygen of production efficiency
The preparation method for changing calcium refractory material, with this method prepare toughening calcium oxide refractory material thermal shock stability is good, elevated temperature strength
Big and cleaning high-temp melt ability is strong.Prepared toughening calcium oxide refractory material can be used as the liner of metallurgical furnace and container,
The needs of super clean high temperature alloy and clean steel smelting can especially be met.
To achieve the above object, the technical solution adopted in the present invention is：First with the calcium oxide particle of 65~80wt% and
The calcium oxide fine powder of 20~35wt% is raw material, then the phenol of the steel fibre and 2~6wt% of the additional 0.05~3wt% of raw material
Urea formaldehyde stirs 3~30 minutes, compression moulding；It is subsequently placed in vacuum equipment, in vacuum degree be 1~2kPa and temperature is 200
It is toasted 8~24 hours under the conditions of~300 DEG C, it is cooling to get toughening calcium oxide refractory material.
The preparation method of the calcium oxide particle is：By calcium hydroxide powder: the mass ratio of additive is 1: (0.002~
0.02) it, by the calcium hydroxide powder and the additive wet-milling 1~5 hour, filters, drying, grinding is to get mixed powder；
The mixed powder is placed in the charging basket of Granulation Equipments again, is granulated under conditions of 200~2000 turns per minute, is made
Grain size is the calcium hydroxide particle of 0.2~9mm, drying；Then the calcium hydroxide particle after drying is placed in heating furnace, in
1~5 hour is kept the temperature under the conditions of 1400~1800 DEG C, it is cooling to get the calcium oxide particle that grain size is 0.1~7mm.
The calcium oxide particle：CaO content >=95wt%, bulk density >=2.8g/cm3。
The grain size of CaO content >=95wt% of the calcium oxide fine powder, calcium oxide fine powder are 2~200 μm.
The length of a diameter of 5 μm~100 μm of the steel fibre, steel fibre is 1mm~25mm.
The phenolic resin is liquid or solid, Residual carbon >=30% of phenolic resin.
The Ca (OH) of the calcium hydroxide powder2The grain size of content >=90wt%, calcium hydroxide powder is 2~200 μm.
The additive is zirconium hydroxide powder or is Zirconium oxide powder.
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art：
The present invention introduces a certain amount of steel fibre in preparation process, and the toughness of calcium oxide refractory material is improved, from
And the thermal shock resistance energy of prepared calcia material is improved in use；The steel fiber material of introducing is in made system
Product using when will not react with calcium oxide raw material, the high temeperature chemistry performance of the toughening calcium oxide refractory material of preparation is stablized.
Present invention employs comminution granulations to prepare calcium oxide particle, simplifies production technology, improves the production efficiency of product；
The present invention stirs calcium oxide particle, calcium oxide fine powder, steel fibre and phenolic resin, only needs baking that can put into after compression moulding
It uses so that toughening calcium oxide refractory material is reduced in preparation process and using the preceding probability by aquation.Prepared product
In due to there is the presence of a large amount of free calcium oxides, clean high-temperature fusant can be played the role of.
Toughening calcium oxide refractory material prepared by the present invention is after testing：Compressive resistance >=30MPa：Bullet after thermal shock 3 times
Property modulus conservation rate >=70%.
Therefore, the toughening calcium oxide refractory material thermal shock stability that present invention process is simple and production efficiency is high, prepared
Good, elevated temperature strength is greatly and the ability of cleaning high-temp melt is strong；Prepared toughening calcium oxide refractory material can be used as metallurgical furnace and
The liner of container can especially meet the needs of super clean high temperature alloy and clean steel smelting.
Specific embodiment
The present invention will be further described With reference to embodiment, not to the limitation of its protection domain.
It is now that the material Unify legislation involved by present embodiment is as follows to avoid repeating, in embodiment no longer
It repeats：
The preparation method of the calcium oxide particle is：By calcium hydroxide powder: the mass ratio of additive is 1: (0.002~
0.02) it, by the calcium hydroxide powder and the additive wet-milling 1~5 hour, filters, drying, grinding is to get mixed powder；
The mixed powder is placed in the charging basket of Granulation Equipments again, is granulated under conditions of 200~2000 turns per minute, is made
Grain size is the calcium hydroxide particle of 0.2~9mm, drying；Then the calcium hydroxide particle after drying is placed in heating furnace, in
1~5 hour is kept the temperature under the conditions of 1400~1800 DEG C, it is cooling to get the calcium oxide particle that grain size is 0.1~7mm.
The calcium oxide particle：CaO content >=95wt%, bulk density >=2.8g/cm3。
The grain size of CaO content >=95wt% of the calcium oxide fine powder, calcium oxide fine powder are 2~200 μm.
The length of a diameter of 5 μm~100 μm of the steel fibre, steel fibre is 1mm~25mm.
The Ca (OH) of the calcium hydroxide powder2The grain size of content >=90wt%, calcium hydroxide powder is 2~200 μm.
The phenolic resin is liquid or solid, Residual carbon >=30% of phenolic resin.
Embodiment 1
A kind of toughening calcium oxide refractory material and preparation method thereof.Preparation method described in the present embodiment is：First with 65~
The calcium oxide particle of 70wt% and the calcium oxide fine powder of 30~35wt% are raw material, then the additional 0.05~1wt% of raw material
The phenolic resin of steel fibre and 2~3wt% stirs 3~10 minutes, compression moulding；It is subsequently placed in vacuum equipment, in vacuum degree
It is toasted 12~18 hours under the conditions of being 200~250 DEG C for 1~1.5kPa and temperature, it is cooling to get toughening calcium oxide fire proofed wood
Material.
The additive is zirconium hydroxide powder.
Toughening calcium oxide refractory material prepared by the present embodiment is after testing：30~34MPa of compressive resistance；After thermal shock 3 times
Elasticity modulus conservation rate 70~77%.
Embodiment 2
A kind of toughening calcium oxide refractory material and preparation method thereof.Preparation method described in the present embodiment is：First with 70~
The calcium oxide particle of 75wt% and the calcium oxide fine powder of 25~30wt% are raw material, then the steel fibre of the additional 1~2wt% of raw material
The phenolic resin of 3~4wt% of peacekeeping stirs 10~20 minutes, compression moulding；It is subsequently placed in vacuum equipment, is in vacuum degree
1.5~2kPa and temperature are toasted 12~18 hours under the conditions of being 250~300 DEG C, cooling to get toughening calcium oxide refractory material.
The additive is Zirconium oxide powder.
Toughening calcium oxide refractory material prepared by the present embodiment is after testing：32~37MPa of compressive resistance；After thermal shock 3 times
Elasticity modulus conservation rate 74~81%.
Embodiment 3
A kind of toughening calcium oxide refractory material and preparation method thereof.Preparation method described in the present embodiment is：First with 75~
The calcium oxide particle of 80wt% and the calcium oxide fine powder of 20~25wt% are raw material, then the steel fibre of the additional 2~3wt% of raw material
The phenolic resin of 4~6wt% of peacekeeping stirs 20~30 minutes, compression moulding；It is subsequently placed in vacuum equipment, is in vacuum degree
1.5~1.8kPa and temperature are toasted 18~24 hours under the conditions of being 220~280 DEG C, cooling to get toughening calcium oxide fire proofed wood
Material.
The additive is zirconium hydroxide powder.
Toughening calcium oxide refractory material prepared by the present embodiment is after testing：34~40MPa of compressive resistance；After thermal shock 3 times
Elasticity modulus conservation rate 78~85%.
Present embodiment has following good effect compared with prior art：
Present embodiment introduces a certain amount of steel fibre in preparation process, and the toughness of calcium oxide refractory material is able to
It improves, to improve the thermal shock resistance energy of prepared calcia material in use；The steel fiber material of introducing
Made product using when will not react with calcium oxide raw material, the high temeperature chemistry of the toughening calcium oxide refractory material of preparation
It can stablize.
Present embodiment uses comminution granulation and prepares calcium oxide particle, simplifies production technology, improves product
Production efficiency；Present embodiment stirs calcium oxide particle, calcium oxide fine powder, steel fibre and phenolic resin, compression moulding
Only need baking that can come into operation afterwards so that toughening calcium oxide refractory material is in preparation process and before by the probability of aquation
It reduces.Due to there is the presence of a large amount of free calcium oxides in prepared product, clean high-temperature fusant can be played the role of.
Toughening calcium oxide refractory material prepared by present embodiment is after testing：Compressive resistance >=30MPa：Thermal shock 3
Elasticity modulus conservation rate >=70% after secondary.
Therefore, the toughening calcium oxide refractory heat that present embodiment is simple for process and production efficiency is high, prepared
Shake stability is good, elevated temperature strength is big and the ability of cleaning high-temp melt is strong；Prepared toughening calcium oxide refractory material can be used as
The liner of metallurgical furnace and container can especially meet the needs of super clean high temperature alloy and clean steel smelting.
Claims (7)
1. a kind of preparation method of toughening calcium oxide refractory material, it is characterised in that first with the calcium oxide particle of 65~80wt% and
The calcium oxide fine powder of 20~35wt% is raw material, then the phenol of the steel fibre and 2~6wt% of the additional 0.05~3wt% of raw material
Urea formaldehyde stirs 3~30 minutes, compression moulding；It is subsequently placed in vacuum equipment, in vacuum degree be 1~2kPa and temperature is 200
It is toasted 8~24 hours under the conditions of~300 DEG C, it is cooling to get toughening calcium oxide refractory material；
The preparation method of the calcium oxide particle is：By calcium hydroxide powder: the mass ratio of additive is 1: (0.002~
0.02) it, by the calcium hydroxide powder and the additive wet-milling 1~5 hour, filters, drying, grinding is to get mixed powder；
The mixed powder is placed in the charging basket of Granulation Equipments again, is granulated under conditions of 200~2000 turns per minute, is made
Grain size is the calcium hydroxide particle of 0.2~9mm, drying；Then the calcium hydroxide particle after drying is placed in heating furnace, in
1~5 hour is kept the temperature under the conditions of 1400~1800 DEG C, it is cooling to get the calcium oxide particle that grain size is 0.1~7mm；
The calcium oxide particle：CaO content >=95wt%, bulk density >=2.8g/cm3。
2. the preparation method of toughening calcium oxide refractory material according to claim 1, it is characterised in that the calcium oxide is thin
The grain size of CaO content >=95wt% of powder, calcium oxide fine powder are 2~200 μm.
3. the preparation method of toughening calcium oxide refractory material according to claim 1, it is characterised in that the steel fibre
A diameter of 5 μm~100 μm, the length of steel fibre is 1mm~25mm.
4. the preparation method of toughening calcium oxide refractory material according to claim 1, it is characterised in that the phenolic resin
For liquid or solid, Residual carbon >=30% of phenolic resin.
5. the preparation method of toughening calcium oxide refractory material according to claim 1, it is characterised in that the calcium hydroxide
The Ca (OH) of powder2The grain size of content >=90wt%, calcium hydroxide powder is 2~200 μm.
6. the preparation method of toughening calcium oxide refractory material according to claim 1, it is characterised in that the additive is
Zirconium hydroxide powder is Zirconium oxide powder.
7. a kind of toughening calcium oxide refractory material, it is characterised in that the toughening calcium oxide refractory material is according to claim 1
Toughening calcium oxide refractory material prepared by the preparation method of any one of~6 toughening calcium oxide refractory materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810432078.9A CN108585894A (en) | 2018-05-08 | 2018-05-08 | A kind of toughening calcium oxide refractory material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810432078.9A CN108585894A (en) | 2018-05-08 | 2018-05-08 | A kind of toughening calcium oxide refractory material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108585894A true CN108585894A (en) | 2018-09-28 |
Family
ID=63636220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810432078.9A Withdrawn CN108585894A (en) | 2018-05-08 | 2018-05-08 | A kind of toughening calcium oxide refractory material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108585894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384255A (en) * | 2018-11-30 | 2019-02-26 | 武汉科技大学 | A kind of calcium oxide spherolite and preparation method thereof |
| CN115991594A (en) * | 2022-12-18 | 2023-04-21 | 本钢板材股份有限公司 | Lime tundish slag blocking weir |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2066597A2 (en) * | 2006-09-21 | 2009-06-10 | McGowan, Kenneth A. | Methods of use of calcium hexa aluminate refractory linings and/or chemical barriers in high alkali or alkaline environments |
| CN103068749A (en) * | 2010-08-10 | 2013-04-24 | 法商圣高拜欧洲实验及研究中心 | Chromium oxide refractory material |
| CN105198458A (en) * | 2015-09-29 | 2015-12-30 | 中材高新成都能源技术有限公司 | Novel alkaline fire-resistant ceramic fiber material |
| CN106631074A (en) * | 2017-01-05 | 2017-05-10 | 武汉科技大学 | High-calcium-oxide-content calcium oxide material and preparation method thereof |
-
2018
- 2018-05-08 CN CN201810432078.9A patent/CN108585894A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2066597A2 (en) * | 2006-09-21 | 2009-06-10 | McGowan, Kenneth A. | Methods of use of calcium hexa aluminate refractory linings and/or chemical barriers in high alkali or alkaline environments |
| CN103068749A (en) * | 2010-08-10 | 2013-04-24 | 法商圣高拜欧洲实验及研究中心 | Chromium oxide refractory material |
| CN105198458A (en) * | 2015-09-29 | 2015-12-30 | 中材高新成都能源技术有限公司 | Novel alkaline fire-resistant ceramic fiber material |
| CN106631074A (en) * | 2017-01-05 | 2017-05-10 | 武汉科技大学 | High-calcium-oxide-content calcium oxide material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 姜洪舟等: "《无机非金属材料热工设备》", 31 December 2013, 武汉理工大学出版社 * |
| 潘三红等: "《铝用炭素煅烧工》", 31 January 2009, 中国矿业大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384255A (en) * | 2018-11-30 | 2019-02-26 | 武汉科技大学 | A kind of calcium oxide spherolite and preparation method thereof |
| CN115991594A (en) * | 2022-12-18 | 2023-04-21 | 本钢板材股份有限公司 | Lime tundish slag blocking weir |
| CN115991594B (en) * | 2022-12-18 | 2024-01-09 | 本钢板材股份有限公司 | Lime tundish slag blocking weir |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101531533B (en) | Low carbon magnesia carbon brick and preparation method thereof | |
| US7887917B2 (en) | Inorganic fiber | |
| CN100503516C (en) | Alumina-magnesia refractory brick containing light porous aggregate and its making process | |
| CN100560538C (en) | A kind of ZrO that contains 2Magnesia carbon brick and preparation method thereof | |
| CN100564318C (en) | A kind of alumina-silica refractory brick that contains light porous aggregate and preparation method thereof | |
| CN110759717A (en) | Porous corundum ceramic for heating atomizer and preparation method thereof | |
| CN103044048A (en) | Aluminum-magnesium lightweight refractory material and preparation method thereof | |
| CN106278369A (en) | A kind of utilize chromium slag, coal ash for manufacturing for the method for haydite | |
| CN106747367B (en) | Preparation method of compact chromium oxide product with high thermal shock stability | |
| CN102795870A (en) | Light-weight magnesia brick and preparation method thereof | |
| CN108585894A (en) | A kind of toughening calcium oxide refractory material and preparation method thereof | |
| CN104736221A (en) | Higher strength mullite-based iron foundry filter | |
| CN101423412B (en) | Method for preparing high performance silicon oxide combining silicon carbide refractory by low-temperature sintering | |
| CN107954697A (en) | A kind of magnesia carbon brick for adding boron carbide and preparation method thereof | |
| CN107285744A (en) | A kind of ladle low carbon magnesia carbon brick and preparation method thereof | |
| CN109665815A (en) | A kind of preparation method of water body dephosphorized porous ceramic filter materials | |
| CN106631074A (en) | High-calcium-oxide-content calcium oxide material and preparation method thereof | |
| CN108164274A (en) | A kind of calcium Zr refractory material and preparation method thereof | |
| CN102775172B (en) | Magnesium-carbon composite material and preparation method thereof | |
| CN109179470A (en) | A kind of passive oxidation calcium particle and preparation method thereof | |
| CN109796192A (en) | A kind of cobalt melting waste slag haydite of no added ingredient and preparation method thereof | |
| CN106631121A (en) | Calcium oxide foam ceramic and preparation method thereof | |
| CN108911710A (en) | A kind of calcium oxide particle and preparation method thereof | |
| CN106186021A (en) | A kind of light weight granule calcia material and preparation method thereof | |
| CN105801121A (en) | Preparation method of ternary compound-based flexible porous ceramic composite material |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180928 |