CN112010332A - Aluminum oxide clinker preparation system and process flow thereof - Google Patents
Aluminum oxide clinker preparation system and process flow thereof Download PDFInfo
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- CN112010332A CN112010332A CN202010936753.9A CN202010936753A CN112010332A CN 112010332 A CN112010332 A CN 112010332A CN 202010936753 A CN202010936753 A CN 202010936753A CN 112010332 A CN112010332 A CN 112010332A
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- powder
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- dust collector
- rotary kiln
- cooler
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 230000008569 process Effects 0.000 title claims abstract description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title description 6
- 239000000843 powder Substances 0.000 claims abstract description 80
- 238000001035 drying Methods 0.000 claims abstract description 35
- 239000000428 dust Substances 0.000 claims abstract description 31
- 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 24
- 238000001354 calcination Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 229910001570 bauxite Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 claims description 8
- 239000011812 mixed powder Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000004131 Bayer process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to an alumina clinker preparation system and a process flow thereof, which comprises a preheating system, a rotary kiln, a cooler, a drying crusher, a hot blast furnace system, a powder concentrator and a dust collector, wherein a discharge hole of the preheating system is connected with a feed hole of the rotary kiln; the air outlet of the powder concentrator is connected with the air inlet of the dust collector; the invention effectively removes the water in the red mud and prepares the red mud powder, thereby greatly reducing the heat consumption required by the rotary kiln calcination; meanwhile, the exhaust gas in the preheating system and the cooling machine is fully utilized to reduce the energy consumption of the system, so that the production cost is reduced.
Description
Technical Field
The invention relates to an alumina clinker preparation system and a process flow thereof.
Background
The aluminum oxide preparation currently takes a Bayer process as a main preparation process, the Bayer process has simple preparation process flow and low production cost, but has higher requirements on bauxite, and is suitable for preparing aluminum oxide from bauxite with high aluminum-silicon ratio; along with the development of aluminum industry and the consumption of bauxite, high-quality bauxite required by aluminum oxide is less and less, and domestic aluminum oxide production enterprises have to purchase bauxite with high aluminum-silicon ratio from abroad, so that the production cost is increased; moreover, the foreign high-quality bauxite resources are gradually reduced, the bauxite with low aluminum-silicon ratio has to be considered for preparing the alumina, and the sintering method is a more reasonable method for preparing the alumina clinker by utilizing the bauxite with low aluminum-silicon ratio.
In the Bayer process for preparing alumina, high-moisture red mud is formed by the dissolution of bauxite, and the red mud still contains a certain amount of alumina and alkali content, and can be used as a raw material for producing alumina clinker by recycling.
The existing alumina clinker calcining system is to prepare raw slurry from red mud by a wet grinding mode and then directly feed the raw slurry into a rotary kiln for wet calcining, and because the red mud has high moisture, the heat consumption of the system in the clinker calcining process is high, and in addition, the energy consumption of the whole system is also high, so that the production cost is high and the system is to be further improved.
Disclosure of Invention
In view of the current situation of the prior art, the technical problem to be solved by the present invention is to provide an alumina clinker preparation system and a process flow thereof, which can effectively remove the moisture in the red mud and prepare the red mud powder so as to greatly reduce the heat consumption required by the rotary kiln calcination, and simultaneously reduce the system energy consumption, thereby reducing the production cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: an alumina clinker preparation system is characterized in that: the system comprises a preheating system, a rotary kiln, a cooler, a drying crusher, a hot blast stove system, a powder concentrator and a dust collector, wherein a discharge port of the preheating system is connected with a feed port of the rotary kiln, a discharge port of the rotary kiln is connected with a feed port of the cooler, an air outlet of the preheating system and an air outlet of the hot blast stove system are both connected with an air inlet of the drying crusher, an air outlet of the drying crusher is connected with an air inlet of the powder concentrator, and a coarse powder discharge port of the powder concentrator is connected with a feed port of the drying crusher; and the air outlet of the powder concentrator is connected with the air inlet of the dust collector.
Preferably, the preheating system comprises a plurality of serially connected cyclones, a feed inlet of the rotary kiln is connected with a discharge outlet of the lowest-level cyclone, and an air outlet of the highest-level cyclone is connected with an air inlet of the drying and crushing machine.
Preferably, the air-conditioning system further comprises a first air pipe, one end of the air pipe is connected with the hot blast stove system, and the other end of the air pipe is connected to the head or the middle part of the cooling machine.
Preferably, the system also comprises a dust collector, a fan, a chimney and a second air pipe; one end of the second air pipe is connected with an air inlet of the dust collector, the other end of the second air pipe is connected to the tail of the cooling machine, an air outlet of the dust collector is connected with an air inlet of the fan, and an air outlet of the fan is connected with an air inlet of the chimney.
The technological process of the alumina clinker calcining system is characterized in that: the method comprises the following steps:
(1) the red mud cake is fed into a drying crusher to prepare red mud powder, the red mud powder is fed into a powder concentrator, and auxiliary dry powder is fed into an air inlet of the powder concentrator or a discharge hole of a dust collector to be mixed with the red mud powder.
(2) And the mixed powder from the air outlet of the powder concentrator enters a dust collector for gas-solid separation to obtain raw powder, the raw powder is sent to a homogenizing warehouse for standby, the mixed powder from the coarse powder outlet of the powder concentrator returns to the drying crusher through the feed inlet of the drying crusher, and the waste gas discharged from the dust collector is sent to a waste gas treatment system.
(3) And sequentially passing the raw material powder through a preheating system, a rotary kiln and a cooler to prepare the alumina clinker.
(4) Exchanging heat of the clinker in a cooler to form high-temperature hot air which enters the rotary kiln and is used as secondary air for fuel combustion in the rotary kiln; the formed medium-temperature air enters the hot blast stove system through the first air pipe and is used as secondary air for burning the fuel of the hot blast stove.
(5) The low-temperature air at the tail part of the cooler enters the dust collector through the second air pipe under the action of the fan and is exhausted into the atmosphere through the chimney, so that the temperature of the hot air led into the cooler of the hot blast stove system is higher.
(6) The low-temperature air at the tail part of the cooler can also be introduced into a drying and grinding system of the auxiliary material dry powder for drying the auxiliary material dry powder.
Preferably, the auxiliary dry powder in step (1) is composed of limestone powder, bauxite powder and alkali powder.
Compared with the prior art, the invention has the advantages that: the invention effectively removes the water in the red mud and prepares the red mud powder, thereby greatly reducing the heat consumption required by the rotary kiln calcination; meanwhile, the exhaust gas in the preheating system and the cooling machine is fully utilized to reduce the energy consumption of the system, so that the production cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the dry powder of the auxiliary materials of the present invention when being fed into the air inlet of the powder concentrator;
FIG. 2 is a schematic diagram of the connection of the dry powder of the auxiliary materials of the present invention when being fed into the discharge port of the dust collector;
FIG. 3 is a schematic view of the connection of a first air duct of the present invention;
FIG. 4 is a schematic view of the connection of the dust collector, the fan, the chimney and the second air duct of the present invention;
FIG. 5 is a schematic diagram of the connection between the second air duct and the drying and pulverizing system for dry powder of auxiliary materials according to the present invention.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.
As shown in fig. 1 to 5, an alumina clinker preparation system comprises a preheating system 1, a rotary kiln 2, a cooler 3, a drying crusher 4, a hot blast stove system 5, a powder concentrator 6 and a dust collector 7, wherein a discharge port of the preheating system 1 is connected with a feed port of the rotary kiln 2, a discharge port of the rotary kiln 2 is connected with a feed port of the cooler 3, an air outlet of the preheating system 1 and an air outlet of the hot blast stove system 5 are both connected with an air inlet of the drying crusher 4, an air outlet of the drying crusher 4 is connected with an air inlet of the powder concentrator 6, and a coarse powder discharge port of the powder concentrator 6 is connected with a feed port of the drying crusher 4; the air outlet of the powder concentrator 6 is connected with the air inlet of the dust collector 7.
The preheating system 1 comprises a plurality of serially connected cyclones 1-1, a feed inlet of the rotary kiln 2 is connected with a discharge outlet of the lowest-level cyclone 1-1, and an air outlet of the highest-level cyclone 1-1 is connected with an air inlet of the drying crusher 4.
The alumina clinker preparation system further comprises a first air pipe 8, one end of the air pipe 8 is connected with a hot blast stove system 5, and the other end of the air pipe 8 is connected with a cooling machine 3 and the head or the middle part.
The alumina clinker preparation system also comprises a dust collector 9, a fan 10, a chimney 11 and a second air pipe 12; one end of a second air pipe 12 is connected with an air inlet of the dust collector 9, the other end of the second air pipe 12 is connected with the tail part of the cooling machine 3, an air outlet of the dust collector 9 is connected with an air inlet of the fan 10, and an air outlet of the fan 10 is connected with an air inlet of the chimney 11.
A process flow of an alumina clinker preparation system comprises the following steps:
(1) feeding the red mud cake into a drying crusher 4 to prepare red mud powder, feeding the red mud powder into a powder concentrator 6, and feeding auxiliary dry powder into an air inlet of the powder concentrator 6 or a discharge hole of a dust collector 7 to be mixed with the red mud powder; the auxiliary material dry powder consists of limestone powder, bauxite powder and alkali powder.
(2) The mixed powder from the air outlet of the powder concentrator 6 enters the dust collector 7 for gas-solid separation to obtain raw powder and is sent to the homogenizing warehouse for standby, the mixed powder from the coarse powder outlet of the powder concentrator 6 returns to the drying crusher 4 again through the feed inlet of the drying crusher 4, and the waste gas discharged from the dust collector 7 is sent to a waste gas treatment system.
(3) Raw material powder is sequentially processed by a preheating system 1, a rotary kiln 2 and a cooling machine 3 to prepare alumina clinker, the preheating system 1 can preheat the raw material powder and remove part of crystal water, and the rotary kiln 2 finishes the calcination of the raw material powder, so that the energy consumption of the rotary kiln 2 is reduced.
(4) Performing gas-solid heat exchange on the clinker in a cooler 3 to form high-temperature hot air which enters the rotary kiln 2 and is used as secondary air for fuel combustion in the rotary kiln 2; the medium temperature wind that forms gets into hot-blast furnace system 5 through first tuber pipe 8 to as the overgrate air of hot-blast furnace fuel burning, just so realized the recycle of 3 waste gases of cooler, and then practice thrift hot-blast furnace system 5's fuel quantity, indirectly improved hot-blast furnace system 5's export flue gas temperature and reduce the flue gas volume simultaneously, and then reduced exhaust-gas treatment system's exhaust-gas treatment volume, thereby reduced exhaust-gas treatment system's energy consumption.
(5) Low-temperature air (generally 90-150 ℃) at the tail part of the cooler 3 enters the dust collector 9 through the second air pipe 12 under the action of the fan 10 and is exhausted into the atmosphere through the chimney 11, so that the hot air temperature of the cooler 3 led into the hot air furnace system 5 is higher, the fuel consumption of the hot air furnace system 5 is reduced, the outlet flue gas temperature of the hot air furnace system 5 is further improved, the flue gas temperature in the drying crusher 4 is further improved, and the drying efficiency of the red mud is improved.
(6) The low-temperature air at the tail part of the cooler 3 can also be introduced into a drying and grinding system of the auxiliary material dry powder for drying the auxiliary material dry powder, so that all waste gas with a drying function of the system is recycled, and the energy consumption of the system is further reduced.
The invention effectively removes the water in the red mud and prepares the red mud powder, thereby greatly reducing the heat consumption required by the calcination of the rotary kiln 2; meanwhile, the exhaust gas in the preheating system 1 and the cooling machine 3 is fully utilized to reduce the energy consumption of the system, thereby reducing the production cost.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An alumina clinker preparation system is characterized in that: the system comprises a preheating system, a rotary kiln, a cooler, a drying crusher, a hot blast stove system, a powder concentrator and a dust collector, wherein a discharge port of the preheating system is connected with a feed port of the rotary kiln, a discharge port of the rotary kiln is connected with a feed port of the cooler, an air outlet of the preheating system and an air outlet of the hot blast stove system are both connected with an air inlet of the drying crusher, an air outlet of the drying crusher is connected with an air inlet of the powder concentrator, and a coarse powder discharge port of the powder concentrator is connected with a feed port of the drying crusher; and the air outlet of the powder concentrator is connected with the air inlet of the dust collector.
2. An alumina clinker production system as claimed in claim 1, wherein: the preheating system comprises a plurality of serially connected cyclones, a feed inlet of the rotary kiln is connected with a discharge outlet of the lowest-level cyclone, and an air outlet of the highest-level cyclone is connected with an air inlet of the drying crusher.
3. An alumina clinker production system as claimed in claim 1, wherein: the hot blast stove system is characterized by further comprising a first air pipe, one end of the air pipe is connected with the hot blast stove system, and the other end of the air pipe is connected to the head or the middle of the cooler.
4. An alumina clinker production system as claimed in claim 1, wherein: the device also comprises a dust collector, a fan, a chimney and a second air pipe; one end of the second air pipe is connected with an air inlet of the dust collector, the other end of the second air pipe is connected to the tail of the cooling machine, an air outlet of the dust collector is connected with an air inlet of the fan, and an air outlet of the fan is connected with an air inlet of the chimney.
5. The technological process of the alumina clinker calcining system is characterized in that: the method comprises the following steps:
(1) the red mud cake is fed into a drying crusher to prepare red mud powder, the red mud powder is fed into a powder concentrator, and auxiliary dry powder is fed into an air inlet of the powder concentrator or a discharge hole of a dust collector to be mixed with the red mud powder.
(2) And the mixed powder from the air outlet of the powder concentrator enters a dust collector for gas-solid separation to obtain raw powder, the raw powder is sent to a homogenizing warehouse for standby, the mixed powder from the coarse powder outlet of the powder concentrator returns to the drying crusher through the feed inlet of the drying crusher, and the waste gas discharged from the dust collector is sent to a waste gas treatment system.
(3) And sequentially passing the raw material powder through a preheating system, a rotary kiln and a cooler to prepare the alumina clinker.
(4) Exchanging heat of the clinker in a cooler to form high-temperature hot air which enters the rotary kiln and is used as secondary air for fuel combustion in the rotary kiln; the formed medium-temperature air enters the hot blast stove system through the first air pipe and is used as secondary air for burning the fuel of the hot blast stove.
(5) The low-temperature air at the tail part of the cooler enters the dust collector through the second air pipe under the action of the fan and is exhausted into the atmosphere through the chimney, so that the temperature of the hot air led into the cooler of the hot blast stove system is higher.
(6) The low-temperature air at the tail part of the cooler can also be introduced into a drying and grinding system of the auxiliary material dry powder for drying the auxiliary material dry powder.
6. The process flow of an alumina clinker calcination system according to claim 5, wherein: the auxiliary material dry powder in the step (1) consists of limestone powder, bauxite powder and alkali powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010936753.9A CN112010332A (en) | 2020-09-08 | 2020-09-08 | Aluminum oxide clinker preparation system and process flow thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010936753.9A CN112010332A (en) | 2020-09-08 | 2020-09-08 | Aluminum oxide clinker preparation system and process flow thereof |
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| CN112010332A true CN112010332A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010936753.9A Pending CN112010332A (en) | 2020-09-08 | 2020-09-08 | Aluminum oxide clinker preparation system and process flow thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111323A (en) * | 2021-10-09 | 2022-03-01 | 中信重工机械股份有限公司 | Red mud clinker calcining preparation device and method |
| WO2022166925A1 (en) * | 2021-02-07 | 2022-08-11 | 中国恩菲工程技术有限公司 | Molybdenum oxide roasting system |
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| CN102180496A (en) * | 2011-03-03 | 2011-09-14 | 东北大学设计研究院（有限公司） | Device for producing alumina clinker by semi-dry process |
| CN103922625A (en) * | 2014-04-16 | 2014-07-16 | 南京凯盛国际工程有限公司 | System for drying and decomposing wet acetylene sludge and firing cement clinker by using wet acetylene sludge as calcium raw material |
| CN110028091A (en) * | 2018-05-31 | 2019-07-19 | 沈阳铝镁设计研究院有限公司 | A kind of Bayer process red mud production aluminium oxide wet laid furnishes dry sintering technique |
| CN111333091A (en) * | 2020-04-26 | 2020-06-26 | 渑池东能科技有限公司 | Method and production system for producing aluminum oxide by red mud sintering method |
-
2020
- 2020-09-08 CN CN202010936753.9A patent/CN112010332A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180496A (en) * | 2011-03-03 | 2011-09-14 | 东北大学设计研究院（有限公司） | Device for producing alumina clinker by semi-dry process |
| CN103922625A (en) * | 2014-04-16 | 2014-07-16 | 南京凯盛国际工程有限公司 | System for drying and decomposing wet acetylene sludge and firing cement clinker by using wet acetylene sludge as calcium raw material |
| CN110028091A (en) * | 2018-05-31 | 2019-07-19 | 沈阳铝镁设计研究院有限公司 | A kind of Bayer process red mud production aluminium oxide wet laid furnishes dry sintering technique |
| CN111333091A (en) * | 2020-04-26 | 2020-06-26 | 渑池东能科技有限公司 | Method and production system for producing aluminum oxide by red mud sintering method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166925A1 (en) * | 2021-02-07 | 2022-08-11 | 中国恩菲工程技术有限公司 | Molybdenum oxide roasting system |
| CN114111323A (en) * | 2021-10-09 | 2022-03-01 | 中信重工机械股份有限公司 | Red mud clinker calcining preparation device and method |
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Application publication date: 20201201 |