CN106278304B - A kind of intermediate frequency furnace lining and preparation method thereof - Google Patents
A kind of intermediate frequency furnace lining and preparation method thereof Download PDFInfo
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- CN106278304B CN106278304B CN201610607558.5A CN201610607558A CN106278304B CN 106278304 B CN106278304 B CN 106278304B CN 201610607558 A CN201610607558 A CN 201610607558A CN 106278304 B CN106278304 B CN 106278304B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 21
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000010431 corundum Substances 0.000 claims abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000010432 diamond Substances 0.000 claims abstract description 4
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 12
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000005022 packaging material Substances 0.000 claims description 2
- 241001504664 Crossocheilus latius Species 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 241001062472 Stokellia anisodon Species 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000009490 roller compaction Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a kind of intermediate frequency furnace linings and preparation method thereof.Intermediate frequency furnace lining is prepared from the following raw materials in parts by weight: 5-8mm:20-30 parts of carbon-free ladle recycled aggregate, 3-5mm:8-15 parts of carbon-free ladle recycled aggregate, 1-3mm:8-15 parts of carbon-free ladle recycled aggregate, fused white corundum or 0-1mm:10-20 parts of plate diamond spar, 5-15 parts of fused white corundum fine powder, 5-15 parts of electric smelting spinelle fine powder, α~5-10 parts of Reactive alumina, 5-15 parts of combined binder.Using carbon-free ladle lining is largely regenerated as raw material, can economize on resources turns waste into wealth, reduces enterprise's production cost the present invention, and due to the introducing of combined binder, the high-temperature behavior of intermediate frequency furnace charge can be improved, improve and smelt number.
Description
Technical field
The present invention relates to a kind of intermediate frequency furnace linings and preparation method thereof, belong to fire resisting material field.
Background technique
Intermediate frequency furnace have the characteristics that quick heating, can batch operation, it is easy to operate, pollution it is small, energy-efficient, in recent years
It is widely used in the industries such as metallurgy, casting, and constantly develops to high-power, rapid melting, large capacity direction.Due to the spy of structure
The complexity of different property and metal smelting ingredient, in addition centreless intermediate frequency furnace requires refractory material cannot be carbon containing and requires high-purity
Degree, thus the leeway of selection of refractory and little.Therefore, large cast steel, special steel fusing are to the high temperatures of induction furnace furnace lining
It can propose requirements at the higher level.In order to meet these requirements, in design of material, electro-corundum, dense alumina, magnalium point are largely selected
The high-end refractory material such as spar.A large amount of utilizations of high-end refractory material bring very big pressure to the production of refractory material enterprise, more
Used refractory is turned one's attention to come more enterprises.
The recycling of used refractory increasingly causes the attention of countries in the world refractories industry.Developed country
Waste refractory materials recovery utilization rate reaches 80% or more.On the one hand the recycling of used refractory can save a large amount of treasured
Your resource improves enterprise competitiveness；On the other hand, using a large amount of used refractories, improvement and protection environment can also be played
Positive effect.So the regenerative use technology of used refractory is rapidly developed, development is utilized from initial sorting
The fire resistive material product new directly as Material synthesis till now.
The used refractory regeneration techniques in China, regenerative magnesia-carbon brick using extremely successful, but carbon-free ladle, in
Using also considerably less on frequency oven refractory.
Summary of the invention
The present invention is intended to provide a kind of intermediate frequency furnace lining and preparation method thereof, using largely regenerating carbon-free ladle lining
As raw material, can economize on resources turns waste into wealth, reduces enterprise's production cost, and due to the introducing of combined binder, can be with
The high-temperature behavior of intermediate frequency furnace charge is improved, improves and smelts number.
The present invention provides a kind of intermediate frequency furnace linings, are prepared from the following raw materials in parts by weight:
5-8mm:20-30 parts of carbon-free ladle recycled aggregate,
3-5mm:8-15 parts of carbon-free ladle recycled aggregate,
1-3mm:8-15 parts of carbon-free ladle recycled aggregate,
One or both of fused white corundum or plate diamond spar: granularity is 0.1-1mm:10-20 parts,
Fused white corundum fine powder: 5-15 parts,
Electric smelting spinelle fine powder: 5-15 parts,
α~Reactive alumina: 5-10 part,
Combined binder: 5-15 parts.
The carbon-free ladle recycled aggregate 5-8mm, carbon-free ladle recycled aggregate 3-5mm, carbon-free ladle recycled aggregate 1-
3mm is that recycling pretreatment gained, pretreatment process will be carried out with rear carbon-free steel packaging material are as follows: artificial sorting → rejecting alterated layer
→ be crushed → rolling → adds water and industrial alcohol ageing mixture → rolling again → to sieve → phosphoric acid dip.
Further, in the phosphoric acid dip process, concrete operation method are as follows: be put into the industrial phosphorus that mass concentration is 85%
It is impregnated for 24 hours in acid.
The granularity of the fused white corundum fine powder is 325 mesh, is not greater than 5% in 325 meshes.
The granularity of the electric smelting spinelle fine powder is 325 mesh, is not greater than 5% in 325 meshes；The requirement of its chemical component:
MgO:22-24%, Al2O3 : 75-76%, SiO2≤0.20%.The ratio refers to mass percent.
The index of the α~Reactive alumina is as follows: Al2O3 >=99.5%, SiO2≤ 0.2%, Fe2O3≤ 0.2%,
Na2O≤0.25%, real density >=3.92g/cm3, d50: 1-1.15 μm.
The combined binder is prepared from the following raw materials in parts by weight:
Ultrafine aluminium hydroxide: 10-23 parts；
Chrome green: 4 parts；
Industrial phosphoric acid: 30-45 parts.
The preparation process of the combined binder is as follows: by weight by 10-23 parts of ultrafine aluminium hydroxides, 4 part of three oxidation
Two chromium, wet ball grinding to sub-micron rank add 30-45 parts of industrial phosphoric acid reactions, are combined binder after placing 2 weeks.
In the combined binder: ultrafine aluminium hydroxide granularity is 600 mesh, Al (OH)3Content is not less than 98.5%；Industry
Phosphoric acid, mass concentration 85%, density are 1.69 g/cm3；Cr2O3 Granularity is 150 mesh, Cr2O3Content is not less than 99.0%.
The present invention provides a kind of preparation methods of intermediate frequency furnace lining, comprising the following steps:
By the carbon-free ladle recycled aggregate 5-8mm prepared in advance, carbon-free ladle recycled aggregate 3-5mm, the regeneration of carbon-free ladle
Aggregate 1-3mm, fused white corundum or plate diamond spar 0.1-1mm, fused white corundum fine powder, electric smelting spinelle fine powder, α~active oxygen
Change aluminium micro mist successively pour into the blender with rolling device, stir 4 ~ 6min, add combined binder, while stirring plus
Enter, be stirred for 4 ~ 6min, as steel-making intermediate frequency furnace lining material.
The innovation of the invention consists in that: one, with the pretreatment of rear carbon-free ladle lining；Two, unique mixed binding
Agent system.
Beneficial effects of the present invention:
1, using carbon-free ladle lining is largely regenerated, can economize on resources turns waste into wealth, reduces enterprise's production cost；
2, the working process process for regenerating carbon-free ladle lining, adds water and industrial alcohol ageing mixture, can reduce resin
Bond strength, in the roller compaction process in later period, to reduce the quantity of false particle；It prevents from cracking in use process；
3, the broken carbon-free ladle refractory material aggregate phosphoric acid dip of regeneration makes false that phosphoric acid filling is not grinded up
Grain stomata, guarantees the intensity in use process；
4, combined binder not only can guarantee the initial strength and density of intermediate frequency furnace lining material, moreover it is possible to extend it normal
Holding time under temperature；Combined binder, making bonding agent than single use phosphoric acid or aluminium dihydrogen phosphate has better high-temperature behavior,
P can be formed at high temperature2O5-Al2O3 -Cr2O3This high-temperature stable substance.
Specific embodiment
The present invention is further illustrated below by embodiment, but is not limited to following embodiment.
Embodiment 1:
Raw material proportioning is shown in Table 1.
Table 1:
The preparation method comprises the following steps: first preparing combined binder according to the preparation process of combined binder, then will be ready in advance
Carbon-free ladle recycled aggregate 5-8mm, carbon-free ladle recycled aggregate 3-5mm, carbon-free ladle recycled aggregate 1-3mm, fused white corundum
0.1-1mm, fused white corundum fine powder, electric smelting spinelle fine powder, α~Reactive alumina are successively poured into rolling device
In blender, 5min is stirred, combined binder is added, is added while stirring, be stirred for 5min.
Embodiment 2:
Raw material proportioning is shown in Table 2.
Table 2:
Preparation: combined binder first is prepared according to the preparation process of combined binder, then ready carbon-free steel will be shifted to an earlier date
Packet recycled aggregate 5-8mm, carbon-free ladle recycled aggregate 3-5mm, carbon-free ladle recycled aggregate 1-3mm, fused white corundum 0.1-
1mm, fused white corundum fine powder, electric smelting spinelle fine powder, α~Reactive alumina successively pour into the stirring with rolling device
In machine, 4min is stirred, combined binder is added, is added while stirring, be stirred for 3min.
Claims (4)
1. a kind of intermediate frequency furnace lining, it is characterised in that: the raw material comprising following parts by weight: carbon-free ladle recycled aggregate 5-8mm:
20-30 parts, 3-5mm:8-15 parts of carbon-free ladle recycled aggregate, 1-3mm:8-15 parts of carbon-free ladle recycled aggregate, fused white corundum
Or one or both of plate diamond spar: granularity 0.1-1mm, 10-20 part, 325 mesh fused white corundum fine powders: 5-15 parts, electricity
Molten spinelle fine powder: 5-15 parts, α~Reactive alumina: 5-10 part, combined binder: 5-15 parts；
The combined binder are as follows: wet by weight by 600 mesh ultrafine aluminium hydroxide of 10-23 part, 4 part of 150 mesh chrome green
Method is milled to sub-micron rank, 30-45 parts of industrial phosphoric acid reactions is added, after placing 2 weeks.
2. a kind of preparation method of intermediate frequency furnace lining described in claim 1, it is characterised in that: the carbon-free ladle that will prepare in advance
Recycled aggregate 5-8mm, carbon-free ladle recycled aggregate 3-5mm, carbon-free ladle recycled aggregate 1-3mm, fused white corundum or plate are rigid
Beautiful 0.1-1mm, 325 mesh fused white corundum fine powders, electric smelting spinelle fine powder, α~Reactive alumina are successively poured into stone roller
In the blender of pressure device, stir 4 ~ 6min, add combined binder, be added while stirring, be stirred for 4 ~ 6min, as in
Frequency furnace lining material.
3. the preparation method of intermediate frequency furnace lining according to claim 2, it is characterised in that: the carbon-free ladle Regenerated Bone
Expect that 5-8mm, carbon-free ladle recycled aggregate 3-5mm, carbon-free ladle recycled aggregate 1-3mm are will to be provided with rear carbon-free steel packaging material
Sourceization pretreatment gained, pretreatment process are as follows: artificial sorting → rejecting alterated layer → be crushed → rolls → add water and industrial alcohol
Ageing mixture → rolling again → sieves → phosphoric acid dip.
4. the preparation method of intermediate frequency furnace lining according to claim 3, it is characterised in that: in the phosphoric acid dip process,
Concrete operation method are as follows: be put into the industrial phosphoric acid that mass concentration is 85% and impregnate for 24 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610607558.5A CN106278304B (en) | 2016-07-29 | 2016-07-29 | A kind of intermediate frequency furnace lining and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610607558.5A CN106278304B (en) | 2016-07-29 | 2016-07-29 | A kind of intermediate frequency furnace lining and preparation method thereof |
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| CN106278304B true CN106278304B (en) | 2019-01-22 |
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| CN114180954B (en) * | 2022-02-15 | 2022-05-17 | 北京利尔高温材料股份有限公司 | Environment-friendly low-carbon aluminum-magnesium spinel brick and preparation method thereof |
| CN115010473B (en) * | 2022-06-22 | 2023-08-04 | 襄阳聚力新材料科技有限公司 | Coil clay for medium-frequency induction furnace and preparation method thereof |
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| CN102815951B (en) * | 2012-07-27 | 2013-09-18 | 中国铝业股份有限公司 | Flame-resistant corrosion-resistant coating |
| CN102951913B (en) * | 2012-11-08 | 2014-11-12 | 中山市华山特种陶瓷有限公司 | Isostatic compaction corundum spinel crucible and preparation method thereof |
| CN103553578B (en) * | 2013-10-23 | 2015-08-19 | 洛阳利尔耐火材料有限公司 | A kind of gel is in conjunction with easy fired gas permeable brick and preparation technology thereof |
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