CN116813361A - Method for preparing electrofusion compact chrome corundum aggregate by using propane dehydrogenation waste catalyst - Google Patents
Method for preparing electrofusion compact chrome corundum aggregate by using propane dehydrogenation waste catalyst Download PDFInfo
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- CN116813361A CN116813361A CN202310977276.4A CN202310977276A CN116813361A CN 116813361 A CN116813361 A CN 116813361A CN 202310977276 A CN202310977276 A CN 202310977276A CN 116813361 A CN116813361 A CN 116813361A
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- propane dehydrogenation
- aluminum oxide
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- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 239000003054 catalyst Substances 0.000 title claims abstract description 82
- 238000006356 dehydrogenation reaction Methods 0.000 title claims abstract description 61
- 239000001294 propane Substances 0.000 title claims abstract description 60
- 239000002699 waste material Substances 0.000 title claims abstract description 58
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052593 corundum Inorganic materials 0.000 title claims abstract description 37
- 239000010431 corundum Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003723 Smelting Methods 0.000 claims abstract description 50
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 44
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 11
- 239000011707 mineral Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000006104 solid solution Substances 0.000 claims abstract description 9
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 230000003197 catalytic effect Effects 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000002910 solid waste Substances 0.000 abstract description 17
- 238000004064 recycling Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical group [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011819 refractory material Substances 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 description 16
- 229910052804 chromium Inorganic materials 0.000 description 13
- 239000002920 hazardous waste Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 238000003860 storage Methods 0.000 description 8
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 6
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 6
- 238000002386 leaching Methods 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 231100001261 hazardous Toxicity 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- QRRWWGNBSQSBAM-UHFFFAOYSA-N alumane;chromium Chemical compound [AlH3].[Cr] QRRWWGNBSQSBAM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004230 steam cracking Methods 0.000 description 1
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- 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
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
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- 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
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- 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
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- 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
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- Processing Of Solid Wastes (AREA)
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Abstract
The invention relates to the technical field of preparing refractory materials by recycling solid wastes, in particular to a method for preparing electrofusion compact chrome corundum aggregate by using a propane dehydrogenation dead catalyst, which comprises the following steps: the chrome corundum aggregate takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the added weight parts of the propane dehydrogenation waste catalyst are as follows: 10-100 weight percent of chromium oxide, wherein the addition weight part of the chromium oxide is as follows: 0-90 wt% of aluminum oxide, wherein the weight portion of the aluminum oxide is as follows: 0-90 wt%; mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate. The smelting furnace is used for carrying out high-temperature sintering reaction on the catalyst, and aluminum oxide and chromium oxide form an aluminum-chromium solid solution with infinite solid solution at high temperature, so that toxic and harmful components in the waste catalyst are also solidified into the aluminum-chromium solid solution.
Description
Technical Field
The invention relates to the technical field of preparing refractory materials by recycling solid wastes, in particular to a method for preparing electrofusion compact chrome corundum aggregate by using a propane dehydrogenation dead catalyst.
Background
Propylene is an important organic chemical raw material and is used for producing products such as polypropylene, acrylonitrile, butanol and the like; about 66% of the propylene from the hydrocarbon steam cracking ethylene plant, 32% from the refinery catalytic cracking plant, and the remainder from the Propane Dehydrogenation (PDH) and methanol to olefins (MTO/MTP). With the increasing demand for propylene, the widening of the production process of propylene raw material source becomes a research and industrialization hot spot, wherein the process for preparing propylene by propane dehydrogenation is the most interesting; there are various methods for preparing propylene by catalytic dehydrogenation in which the catalyst used in the catalytic dehydrogenation process of propane for Catofin, FBD, linde is Cr 2 O 3 /Al 2 O 3 A series of catalysts. With the increase of the catalytic reaction time, the increase of the reaction temperature and the increase of the reduction-dehydrogenation-regeneration cycle times, the catalyst can be regenerated and deactivated, and the deactivated catalyst which is replaced periodically is the propane dehydrogenation dead catalyst.
Catofin propane dehydrogenation waste chromium-containing catalyst, belonging to HW50 waste, waste codes 261-156-50 according to the national hazardous waste directory (2021 edition), has a hazardous property of T (Toxicity); hazardous waste treatment factories usually carry out innocent treatment through landfill or complex smelting process, so that secondary pollution is easy to cause, the cost is high, and energy and resources are wasted; in the national protection law for solid waste pollution of the people's republic of China, ninety three: the country encourages and supports the joint attack of scientific research institutions, solid waste generation institutions, solid waste utilization institutions, solid waste disposal institutions and the like, research and development of new technologies such as comprehensive utilization, centralized disposal and the like of solid waste, and promotes the technical progress of the solid waste pollution environment prevention and treatment.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for preparing electric smelting compact chrome corundum aggregate by using a propane dehydrogenation dead catalyst.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
The method for preparing the electrofused compact chrome corundum aggregate by using the propane dehydrogenation dead catalyst comprises the following steps: the chrome corundum aggregate takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the added weight parts of the propane dehydrogenation waste catalyst are as follows: 10-100 weight percent of chromium oxide, wherein the addition weight part of the chromium oxide is as follows: 0-90 wt% of aluminum oxide, wherein the weight portion of the aluminum oxide is as follows: 0-90 wt%; mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate with the main crystal phase of an aluminum-chromium solid solution; the chemical composition of the chromium oxide in the fused compact chrome corundum aggregate is 2-92wt%, and the chemical composition of the aluminum oxide is 8-98%.
The propane dehydrogenation dead catalyst is added in parts by weight: 50-100 wt% of chromium oxide, wherein the addition weight portion of the chromium oxide is as follows: 0-50 wt% of aluminum oxide, wherein the weight portion of the aluminum oxide is as follows: 0 to 50wt.
The chemical composition of the chromium oxide in the fused compact chrome corundum aggregate is 10-60wt% and the chemical composition of the aluminum oxide is 40-90%.
Cr in the catalyst containing chromium from the waste of Catofin propane dehydrogenation 2 O 3 18-20 wt% of Na in small amount 2 O, 0.5 wt% and the rest is carrier Al of the catalyst 2 O 3 The method comprises the steps of carrying out a first treatment on the surface of the In order to have better catalytic effect, the catalyst and the carrier belong to porous structures, and the particle density of the catalyst is 1000Kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The chromium-containing catalyst has obvious differences from other chromium-containing catalysts in the pastCr in the catalyst 2 O 3 And Al 2 O 3 The content ratio of Cr is very high 2 O 3 And Al 2 O 3 Can form a chromium-aluminum solid solution which is mutually soluble in any proportion, and has very high utilization value.
By adopting the technical scheme, the invention has the following beneficial effects:
smelting in an ore smelting furnace at an ultrahigh temperature of more than 2500 ℃, and carrying out high-temperature sintering reaction on the catalyst by using a smelting furnace, wherein aluminum oxide and chromium oxide form an aluminum-chromium solid solution with infinite solid solution at a high temperature, so that toxic and harmful components in the waste catalyst are also solidified into the aluminum-chromium solid solution; according to the requirements of GB 5085.3-2007 hazardous waste identification standard leaching toxicity identification, solid waste leaching liquid is carried out according to HJ/T299, the chromium (hexavalent) concentration of a hazardous component item in the leaching liquid is measured according to GB/T15555.4, the detection value is smaller than the 5mg/L of the hazardous component concentration limit value, the hazardous waste leaching liquid does not belong to hazardous waste, and the harmless treatment effect is obvious.
Description of the embodiments
The invention will be explained in more detail by the following examples.
Examples
Catofin propane dehydrogenation waste chromium-containing catalysts are classified as belonging to HW50 waste according to the national hazardous waste directory (2021 edition). The transportation, storage and transportation before the treatment of the waste catalyst are carried out according to the guide rule of the pollution control technology for recycling the HJ 1091 solid waste.
The invention takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the addition weight parts of the propane dehydrogenation waste catalyst are as follows: 10 weight portions of chromium oxide: 0 weight part of alumina: 90wt.
Mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate; the index of the electrofused compact chrome corundum material is shown in table 1.
Examples
Catofin propane dehydrogenation waste chromium-containing catalysts are classified as belonging to HW50 waste according to the national hazardous waste directory (2021 edition). The transportation, storage and transportation before the treatment of the waste catalyst are carried out according to the guide rule of the pollution control technology for recycling the HJ 1091 solid waste.
The invention takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the addition weight parts of the propane dehydrogenation waste catalyst are as follows: 50 weight portions of chromium oxide: 0 weight part of alumina: 50wt.
Mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate. The index of the electrofused compact chrome corundum material is shown in table 1.
Examples
Catofin propane dehydrogenation waste chromium-containing catalysts are classified as belonging to HW50 waste according to the national hazardous waste directory (2021 edition). The transportation, storage and transportation before the treatment of the waste catalyst are carried out according to the guide rule of the pollution control technology for recycling the HJ 1091 solid waste.
The invention takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the addition weight parts of the propane dehydrogenation waste catalyst are as follows: 90 weight portions of chromium oxide: 0 weight part of alumina: 10wt.
Mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate. The index of the electrofused compact chrome corundum material is shown in table 1.
Examples
Catofin propane dehydrogenation waste chromium-containing catalysts are classified as belonging to HW50 waste according to the national hazardous waste directory (2021 edition). The transportation, storage and transportation before the treatment of the waste catalyst are carried out according to the guide rule of the pollution control technology for recycling the HJ 1091 solid waste.
The invention takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the addition weight parts of the propane dehydrogenation waste catalyst are as follows: 100 weight portions of chromium oxide: 0 weight part of alumina: 0wt.
Mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate. The index of the electrofused compact chrome corundum material is shown in table 1.
Examples
Catofin propane dehydrogenation waste chromium-containing catalysts are classified as belonging to HW50 waste according to the national hazardous waste directory (2021 edition). The transportation, storage and transportation before the treatment of the waste catalyst are carried out according to the guide rule of the pollution control technology for recycling the HJ 1091 solid waste.
The invention takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the addition weight parts of the propane dehydrogenation waste catalyst are as follows: 10 weight portions of chromium oxide: 90 weight portions of alumina are added as follows: 0wt.
Mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate. The index of the electrofused compact chrome corundum material is shown in table 1.
Examples
Catofin propane dehydrogenation waste chromium-containing catalysts are classified as belonging to HW50 waste according to the national hazardous waste directory (2021 edition). The transportation, storage and transportation before the treatment of the waste catalyst are carried out according to the guide rule of the pollution control technology for recycling the HJ 1091 solid waste.
The invention takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the addition weight parts of the propane dehydrogenation waste catalyst are as follows: 50 weight portions of chromium oxide: 50 weight portions of alumina: 0wt.
Mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate. The index of the electrofused compact chrome corundum material is shown in table 1.
Examples
Catofin propane dehydrogenation waste chromium-containing catalysts are classified as belonging to HW50 waste according to the national hazardous waste directory (2021 edition). The transportation, storage and transportation before the treatment of the waste catalyst are carried out according to the guide rule of the pollution control technology for recycling the HJ 1091 solid waste.
The invention takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the addition weight parts of the propane dehydrogenation waste catalyst are as follows: 90 weight portions of chromium oxide: 10 weight portions of alumina: 0wt.
Mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate. The index of the electrofused compact chrome corundum material is shown in table 1.
Examples
Catofin propane dehydrogenation waste chromium-containing catalysts are classified as belonging to HW50 waste according to the national hazardous waste directory (2021 edition). The transportation, storage and transportation before the treatment of the waste catalyst are carried out according to the guide rule of the pollution control technology for recycling the HJ 1091 solid waste.
The invention takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the addition weight parts of the propane dehydrogenation waste catalyst are as follows: 80 weight portions of chromium oxide: 10 weight portions of alumina: 10wt.
Mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate. The index of the electrofused compact chrome corundum material is shown in table 1.
TABLE 1 index of fused dense chrome corundum material
Claims (4)
1. A method for preparing electrofused compact chrome corundum aggregate by using a propane dehydrogenation dead catalyst is characterized by comprising the following steps of: the chrome corundum aggregate takes a propane dehydrogenation waste catalyst, chromium oxide and aluminum oxide as raw materials, and the added weight parts of the propane dehydrogenation waste catalyst are as follows: 10-100 weight percent of chromium oxide, wherein the addition weight part of the chromium oxide is as follows: 0-90 wt% of aluminum oxide, wherein the weight portion of the aluminum oxide is as follows: 0-90 wt%; mixing the propane dehydrogenation dead catalyst, chromium oxide and aluminum oxide, smelting in a mineral smelting furnace at a temperature higher than 2500 ℃ to enable the materials to be molten, and cooling and crushing after smelting to obtain the electric smelting compact chrome corundum aggregate with the main crystal phase of an aluminum-chromium solid solution; the chemical composition of the chromium oxide in the fused compact chrome corundum aggregate is 2-92wt%, and the chemical composition of the aluminum oxide is 8-98%.
2. The method for preparing the fused compact chrome corundum aggregate by using the propane dehydrogenation waste catalyst as claimed in claim 1, which is characterized by comprising the following steps: the propane dehydrogenation dead catalyst is added in parts by weight: 50-100 wt% of chromium oxide, wherein the addition weight portion of the chromium oxide is as follows: 0-50 wt% of aluminum oxide, wherein the weight portion of the aluminum oxide is as follows: 0 to 50wt.
3. The method for preparing the fused compact chrome corundum aggregate by using the propane dehydrogenation waste catalyst as claimed in claim 1, which is characterized by comprising the following steps: the chemical composition of the chromium oxide in the fused compact chrome corundum aggregate is 10-60wt% and the chemical composition of the aluminum oxide is 40-90%.
4. The method for preparing the fused compact chrome corundum aggregate by using the propane dehydrogenation waste catalyst as claimed in claim 1, which is characterized by comprising the following steps: in the waste catalyst for propane dehydrogenation, cr 2 O 3 18-20 wt% of Na in small amount 2 O, 0.5 wt% and the rest is carrier Al of the catalyst 2 O 3 The method comprises the steps of carrying out a first treatment on the surface of the In order to obtain better catalytic effect, the catalyst and the carrier are porousStructure, particle density of catalyst is 1000Kg/m 3 。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310977276.4A CN116813361A (en) | 2023-08-04 | 2023-08-04 | Method for preparing electrofusion compact chrome corundum aggregate by using propane dehydrogenation waste catalyst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310977276.4A CN116813361A (en) | 2023-08-04 | 2023-08-04 | Method for preparing electrofusion compact chrome corundum aggregate by using propane dehydrogenation waste catalyst |
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| CN114656267A (en) * | 2022-03-18 | 2022-06-24 | 洛阳阿尔法新材料有限公司 | High-purity homogeneous compact chrome corundum material and preparation method thereof |
| CN116444254A (en) * | 2023-04-23 | 2023-07-18 | 中钢集团洛阳耐火材料研究院有限公司 | Method for preparing chrome corundum lightweight aggregate by using propane dehydrogenation dead catalyst |
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| CN114656267A (en) * | 2022-03-18 | 2022-06-24 | 洛阳阿尔法新材料有限公司 | High-purity homogeneous compact chrome corundum material and preparation method thereof |
| CN116444254A (en) * | 2023-04-23 | 2023-07-18 | 中钢集团洛阳耐火材料研究院有限公司 | Method for preparing chrome corundum lightweight aggregate by using propane dehydrogenation dead catalyst |
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