CN117003555A - Calcium dialuminate-containing chrome corundum castable for dangerous waste incineration device - Google Patents
Calcium dialuminate-containing chrome corundum castable for dangerous waste incineration device Download PDFInfo
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- CN117003555A CN117003555A CN202310993490.9A CN202310993490A CN117003555A CN 117003555 A CN117003555 A CN 117003555A CN 202310993490 A CN202310993490 A CN 202310993490A CN 117003555 A CN117003555 A CN 117003555A
- Authority
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- China
- Prior art keywords
- equal
- calcium dialuminate
- chrome corundum
- less
- waste incineration
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- Pending
Links
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052593 corundum Inorganic materials 0.000 title claims abstract description 30
- 239000010431 corundum Substances 0.000 title claims abstract description 30
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000004056 waste incineration Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 239000011651 chromium Substances 0.000 claims abstract description 10
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000002920 hazardous waste Substances 0.000 claims description 10
- 150000004645 aluminates Chemical class 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 abstract description 8
- 239000011819 refractory material Substances 0.000 abstract description 7
- 230000035939 shock Effects 0.000 abstract description 7
- 239000002253 acid Substances 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 150000001339 alkali metal compounds Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229920005646 polycarboxylate Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 150000005837 radical ions Chemical class 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/105—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- 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)
-
- 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
- C04B2235/3241—Chromium oxides, chromates, 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
- C04B2235/70—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
-
- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Products (AREA)
Abstract
The invention belongs to the refractory material technology for dangerous waste incineration devices, and relates to a chromium corundum castable containing calcium dialuminate for dangerous waste incineration devices. The related raw materials of the chrome corundum castable material containing the calcium dialuminate and the mass percentages thereof are as follows: 5-30% of calcium dialuminate, 60-85% of chrome corundum and active alpha-Al 2 O 3 3-8% of micro powder, 1-5% of chromium oxide green, 3-10% of pure calcium aluminate cement and 0.1-0.2% of water reducer, wherein the water reducer is externally added. The chrome corundum castable containing the calcium dialuminate has the characteristics of excellent mechanical property, good thermal shock resistance, low heat conductivity coefficient (the heat conductivity coefficient at 1000 ℃ is not more than 2W/mK), good acid and alkaline gas corrosion resistance at high temperature, good volume stability, long service life and the like, and is an environment-friendly refractory material with excellent performance.
Description
Technical Field
The invention belongs to the refractory material technology for dangerous waste incineration devices, and relates to a chromium corundum castable containing calcium dialuminate for dangerous waste incineration devices.
Background
With the high-speed development of the economy of China, the quantity of urban industrial dangerous wastes is increased sharply, and the improper treatment of the wastes can seriously affect the environment and endanger the survival of people; at present, the treatment of industrial hazardous waste is mainly carried out by adopting an incineration method for harmless treatment; the waste contains a large amount of acidic and alkaline components, a large amount of corrosive gas such as chloridion, fluoride ion and other acid radical ions, sodium salt, potassium salt and other alkali metal compound steam is generated in the high-temperature incinerator, and a large amount of corrosive components are easy to chemically react with furnace lining materials at high temperature, so that the lining is corroded and damaged, and the production efficiency is influenced; at present, the dangerous waste incineration device mostly adopts chrome corundum brick/chrome corundum castable as a working lining; but the thermal shock resistance of the chrome corundum refractory material is extremely poor, the chrome corundum refractory material is easy to peel off and damage under the condition of frequent temperature fluctuation, and the service life of the chrome corundum refractory material is reduced; the chromium corundum material has higher energy loss in the operation process of the incineration device due to higher density and higher corresponding heat conductivity coefficient, and in addition, the chromium-containing refractory material is easy to react to generate strong carcinogenic hexavalent chromium substances in the use process;
calcium dialuminate is used as a novel synthetic refractory raw material, can stably exist in alkaline, reducing and other environments, has a columnar or needle-shaped structure, reduces heat conduction, and has extremely low thermal expansion coefficient and excellent thermal shock resistance; the patent 'a calcium dialuminate casting material not sticking to aluminum' (CN 111187089A) and 'a high-strength low-conductivity wear-resistant casting material and a preparation method thereof' (CN 105218115A) respectively disclose a preparation method of a pure calcium dialuminate casting material, the casting material products related to the two patents are prepared by taking calcium dialuminate particles and fine powder as main raw materials and pure calcium aluminate cement as a binding agent, the two casting materials are respectively applicable to the aluminum smelting industry and the kiln wear-resistant area, but the acid and alkali corrosion resistance of the casting material products prepared from the pure calcium dialuminate is insufficient, and the casting material products cannot be directly used in hazardous waste incineration devices.
Disclosure of Invention
The invention provides a chromium corundum castable containing calcium dialuminate for a hazardous waste incineration device, which is characterized in that a calcium dialuminate raw material is introduced into the chromium corundum castable, so that the thermal shock resistance of the castable is improved, the heat conductivity coefficient of the castable is reduced, the service life of an incinerator lining is prolonged, and the heat preservation and energy conservation effects are improved.
The invention adopts the following technical scheme for accomplishing the purposes:
the castables containing calcium dialuminate are directly cast into an incinerator as a working layer; the castable comprises the following raw materials in percentage by mass:
calcium dialuminate d is less than or equal to 5mm 5-30%;
chrome corundum d is less than or equal to 5mm 55-80%;
active alpha-Al 2 O 3 Micropowder D 50 ≤2μm 3-8%；
Aluminate cement d is less than or equal to 45 mu m and 3-10%;
chromium oxide green d is less than or equal to 45 mu m 1-5%;
0.1-0.2% of water reducer;
wherein the water reducing agent is externally added.
The chrome corundum is Cr 2 O 3 The content is more than or equal to 13 percent, al 2 O 3 The content is more than or equal to 82 percent, cr 2 O 3 +Al 2 O 3 The content is more than or equal to 98 percent, and the granularity is less than or equal to 5 mm.
The calcium dialuminate is Al 2 O 3 Content ofMore than or equal to 80 weight percent, the CaO content is more than or equal to weight percent, and CaO.6Al 2 O 3 The mineral phase composition is more than or equal to 90wt percent, and the volume density is more than or equal to 2.5g/cm 3 Segment sand with granularity less than or equal to 5 mm.
The active alpha-Al 2 O 3 The micropowder is Al 2 O 3 Calcined alumina micropowder with content more than or equal to 99 percent and granularity D50 less than or equal to 5um.
The invention provides a chromium corundum castable containing calcium dialuminate for a hazardous waste incineration device, which adopts chromium corundum as a matrix material; the chrome corundum material has high strength and excellent erosion resistance, but has poor thermal shock resistance, and is easy to react with alkali metal compounds to generate low-melting-point chromate compounds, and the material has strong carcinogenicity.
In summary, the castable has the following beneficial effects:
1. the thermal shock stability is good, and the probability of peeling and damage of the thermal shock is reduced;
2. the alkaline gas corrosion resistance at high temperature is good, the volume stability is good, and the service life of the lining is effectively prolonged;
3. the heat conductivity coefficient is low, the heat insulation performance of the lining is improved, and the energy is saved;
Detailed Description
The examples of the invention are given below, without constituting any limitation thereof; various performance indicators mentioned in the embodiments are detected according to GB/T4513.6-2017, YB/T4018-2008 and GB/T37796-2019.
Examples
Weighing the following components in percentage by mass:
calcium dialuminate d is less than or equal to 5mm 30%;
chrome corundum d is less than or equal to 5mm 55%;
active alpha-Al 2 O 3 Micropowder D 50 ≤2μm 5%；
Chromium oxide green d is less than or equal to 45 mu m 5%;
aluminate cement d is less than or equal to 45 mu m 3%;
0.1% of water reducer;
wherein, the aluminate cement is selected from Secar71 cement, and the water reducer is selected from polycarboxylate (FS-10); the components are uniformly mixed in a forced mixer, and water is added to be uniformly stirred, so that the castable for the hazardous waste incineration device can be obtained.
Examples
Weighing the following components in percentage by mass:
calcium dialuminate d is less than or equal to 5mm 15%;
chrome corundum d is less than or equal to 5mm 73%;
active alpha-Al 2 O 3 Micropowder D 50 ≤2μm 5%；
Chromium oxide green d is less than or equal to 45 mu m < 2 >;
aluminate cement d is less than or equal to 45 mu m and is 5 percent;
0.1% of water reducer;
wherein, the aluminate cement is selected from Secar71 cement, and the water reducer is selected from polycarboxylate (FS-10); the components are uniformly mixed in a forced mixer, and water is added to be uniformly stirred, so that the castable for the hazardous waste incineration device can be obtained.
Examples
Weighing the following components in percentage by mass:
calcium dialuminate d is less than or equal to 5mm 5%;
chrome corundum d is less than or equal to 5mm 76%;
active alpha-Al 2 O 3 Micropowder D 50 ≤2μm 8%；
Chromium oxide green d is less than or equal to 45 mu m 1%;
aluminate cement d is less than or equal to 45 mu m and 10 percent;
0.2% of water reducer;
wherein, the aluminate cement is the Wick 68 cement, and the water reducing agent is the phosphate system (sodium tripolyphosphate); the components are uniformly mixed in a forced mixer, and water is added to be uniformly stirred, so that the castable for the hazardous waste incineration device can be obtained.
TABLE 1 Performance index of the castable of example 1-example 3
Claims (4)
1. The utility model provides a dangerous discarded object burns device and uses chrome corundum castable material that contains calcium dialuminate which characterized in that: the chrome corundum castable is directly used as a working layer to be poured into the incinerator; the castable comprises the following raw materials in percentage by mass:
calcium dialuminate d is less than or equal to 5mm 5-30%;
chrome corundum d is less than or equal to 5mm 55-80%;
active alpha-Al 2 O 3 Micropowder D 50 ≤2μm 3-8%；
Aluminate cement d is less than or equal to 45 mu m and 3-10%;
chromium oxide green d is less than or equal to 45 mu m 1-5%;
0.1-0.2% of water reducer;
wherein the water reducing agent is externally added.
2. A calcium dialuminate-containing chrome corundum castable material for a hazardous waste incineration device as claimed in claim 1, characterized in that: the chrome corundum is Cr 2 O 3 The content is more than or equal to 13 percent, al 2 O 3 The content is more than or equal to 82 percent, cr 2 O 3 +Al 2 O 3 The content is more than or equal to 98 percent, and the granularity is less than or equal to 5 mm.
3. A calcium dialuminate-containing chrome corundum castable material for a hazardous waste incineration device as claimed in claim 1, characterized in that: the calcium dialuminate is Al 2 O 3 The content is more than or equal to 80 weight percent, the CaO content is more than or equal to 18 weight percent, and the CaO.2Al 2 O 3 The mineral phase composition is more than or equal to 90wt percent, and the volume density is more than or equal to 2.5g/cm 3 Segment sand with granularity less than or equal to 5 mm.
4. A calcium dialuminate-containing chrome corundum castable material for a hazardous waste incineration device as claimed in claim 1, characterized in that: the active alpha-Al 2 O 3 The micropowder is Al 2 O 3 Calcined alumina micropowder with content more than or equal to 99 percent and granularity D50 less than or equal to 2um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310993490.9A CN117003555A (en) | 2023-08-09 | 2023-08-09 | Calcium dialuminate-containing chrome corundum castable for dangerous waste incineration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310993490.9A CN117003555A (en) | 2023-08-09 | 2023-08-09 | Calcium dialuminate-containing chrome corundum castable for dangerous waste incineration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117003555A true CN117003555A (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310993490.9A Pending CN117003555A (en) | 2023-08-09 | 2023-08-09 | Calcium dialuminate-containing chrome corundum castable for dangerous waste incineration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117003555A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999001399A1 (en) * | 1997-07-01 | 1999-01-14 | Didier-Werke Ag | Refractory, chrome-alumina-based material, chrome-alumina brick and use of the brick |
| CN103121851A (en) * | 2012-07-04 | 2013-05-29 | 卫辉熔金高温材料有限责任公司 | Rubbing grain spinel castable and production method thereof |
| CN111439993A (en) * | 2020-04-09 | 2020-07-24 | 通达耐火技术股份有限公司 | Chromium corundum castable for hazardous waste rotary kiln |
| CN114213112A (en) * | 2021-12-28 | 2022-03-22 | 宜兴瑞泰耐火材料工程有限公司 | Environment-friendly chrome corundum castable |
-
2023
- 2023-08-09 CN CN202310993490.9A patent/CN117003555A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999001399A1 (en) * | 1997-07-01 | 1999-01-14 | Didier-Werke Ag | Refractory, chrome-alumina-based material, chrome-alumina brick and use of the brick |
| CN103121851A (en) * | 2012-07-04 | 2013-05-29 | 卫辉熔金高温材料有限责任公司 | Rubbing grain spinel castable and production method thereof |
| CN111439993A (en) * | 2020-04-09 | 2020-07-24 | 通达耐火技术股份有限公司 | Chromium corundum castable for hazardous waste rotary kiln |
| CN114213112A (en) * | 2021-12-28 | 2022-03-22 | 宜兴瑞泰耐火材料工程有限公司 | Environment-friendly chrome corundum castable |
Non-Patent Citations (2)
| Title |
|---|
| 李红霞主编: "《耐火材料手册 （第二版）》", 31 January 2021, 冶金工业出版社, pages: 122 * |
| 秦红彬等: ""二铝酸钙加入量对刚玉浇注料性能的影响"", 《耐火材料》, vol. 57, no. 3, 15 June 2023 (2023-06-15), pages 189 - 193 * |
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