CN108863114A - A kind of method that the light-burned process waste heat of magnesite recycles - Google Patents
A kind of method that the light-burned process waste heat of magnesite recycles Download PDFInfo
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- CN108863114A CN108863114A CN201810734458.8A CN201810734458A CN108863114A CN 108863114 A CN108863114 A CN 108863114A CN 201810734458 A CN201810734458 A CN 201810734458A CN 108863114 A CN108863114 A CN 108863114A
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- magnesite
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- 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
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- 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
- C04B2/00—Lime, magnesia or dolomite
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A kind of method that the light-burned process waste heat of magnesite recycles, it is related to a kind of magnesite smelting process, clean fuel gas is passed through to the burner of magnesite calcining furnace first, its hot fume generated of burning acts on quick burning magnesite powder by gas-solid, its product is through cyclone separator, obtained high temperature light burnt powder is admitted in product whirlwind heat exchanger, the air blasted using the energy heats air-introduced machine of product, air after preheating is passed through to the burner of magnesite calcining furnace using filtering dust collecting, improve efficiency of combustion, light-burned magnesium products after dust removal by filtration and after the cooling of product whirlwind heat exchanger are transported in storage tank；The high-temperature flue gas obtained through cyclone separator, the magnesite powder being preheated and the magnesite fine powder obtained through dust removal by filtration are transported in calcining furnace.The number of flue gas whirlwind heat exchanger and product whirlwind heat exchanger changes between 1-6, and can arbitrarily match.The present invention improves product and flue gas waste heat recovery, has achieved the purpose that energy-saving and emission-reduction.
Description
Technical field
The present invention relates to a kind of magnesite smelting processes, recycle more particularly to a kind of light-burned process waste heat of magnesite
Method.
Background technique
China is that one of the most abundant country of magnesite resource, about 3,000,000,000 tons of total reserves ore account for the world in the world
The 25% of gross reserves.Wherein, magnesite ore reserves in Liaoning is most abundant, accounts for the 85.6% of national gross reserves, be concentrated mainly on Dashiqiao,
One band of Haicheng City, ten thousand tons of annual mining volume about 1200-1500.Magnesite is the primary raw material for producing magnesium compound, and magnesia unslacked is by water chestnut
Magnesium mine calcining gained, be widely used in the multiple fields such as building materials, chemical industry, metallurgy, medicine, be production fire-proof plate, light cellular partition board,
The ideal material of slag etc. is splashed in magnesium sulfate, papermaking, desulfurization process, steel mill's furnace retaining, and produces dead burnt magnesite, highly-purity magnesite and electric-melting magnesium
Raw material.
Liaoning is existing all kinds of for producing calcining stove 2771 of refractory raw material, and wherein light baking kiln accounts for 1367, gently
Burned magnesium oxide yield is more than 4,000,000 tons/year.In decades, the device one of light calcined magnesia is produced by high-temperature calcination magnesite
The traditional handicraft calcined magnesite of " blue-gas generator " joint " reverberatory furnace " or " shaft furnace " is directly continued to use, the backwardness of production technology is not
It only causes that production efficiency is low, poor product quality, also results in the huge waste of the energy.It is insufficient due to fuel combustion, it erects
The thermal efficiency of kiln is only 26.47%, and the flue-gas temperature of shaft furnace discharge is up to 230 DEG C or more, and a large amount of heat is drained with dense smoke,
The calcined light-burning magnesium powder product temperature of stove is up to 800 DEG C, and energy is discharged into nature through natural cooling by above-mentioned high-temperature product
In environment, huge energy dissipation is caused because sensible heat cannot recycle every year.
Chinese Patent Application No. discloses the hot choosing method and its device of a kind of light calcined magnesia for 201110049511.9,
Enter heat exchange of heat pipe by the light calcined magnesia of heat choosing sieve, carries out heat with cold air and exchange, heat air, hot-air is drawn
To heating equipment.Although the invention is effectively utilized a part of heat of light calcined magnesia, but the invention is in reflecting kiln
On the basis of carry out, also without the heat in effective use flue gas.Chinese Patent Application No. discloses for 201310363267.2
A kind of low-grade magnesite multistage subsection purification by mineral and method of comprehensive utilization.The invention is utilized on the basis of multilayer shaft furnace
The sensible heat heating cold burden and furnace body and flotation of ores, pressure ball generated during light-burned is dry.Chinese patent publication No. is CN
106587666 A disclose a kind of device and method of magnesite flotation concentrate production light calcined magnesia.The invention utilizes cigarette
The waste heat of gas preheats the magnesite raw material after drying through multistage pre-heating system, however the invention does not illustrate multistage preheating
The technique of system, and the waste heat not yet in effect using light-burned magnesium products, cause a large amount of losses of heat.
Summary of the invention
The purpose of the present invention is to provide the method that a kind of light-burned process waste heat of magnesite recycles, the present invention passes through benefit
Product energy heats air is used to blast in calcining furnace as fresh air, original cold air, which is blasted, which becomes hot wind, enters to reduce fuel
Consumption improves efficiency of combustion, and a portion thermal energy can be also used for the heat such as winter heating and bathing, to reduce coal
Consumption.Reach energy-saving.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of method that the light-burned process waste heat of magnesite recycles, the method utilize the high temperature light burnt powder of light-burned process production
For product by whirlwind direct contact heat transfer preheated air, cooling product, the air after preheating is used for the fuel gas buring of light-burned process；
The high-temperature flue gas generated using light-burned process is directly exchanged heat by whirlwind and preheats magnesite powder raw material, cooled flue gas；Including following
Detailed process：
Clean fuel gas is passed through to the burner of magnesite calcining furnace first, the hot fume generated of burning acts on quick by gas-solid
Calcined magnesite powder, through cyclone separator, obtained high temperature light burnt powder is admitted in product whirlwind heat exchanger product, utilizes production
Air after preheating, the burning of magnesite calcining furnace is passed through using filtering dust collecting by the air that the energy heats air-introduced machine of product blasts
Device improves efficiency of combustion, and the light-burned magnesium products after dust removal by filtration and after the cooling of product whirlwind heat exchanger are transported to storage tank
In；The high-temperature flue gas obtained through cyclone separator, then preheat raw material magnesite powder through flue gas whirlwind heat exchanger, the cigarette after heat exchange
Direct emission after gas is up to standard after dust removal by filtration, the magnesite powder being preheated and the magnesite fine powder obtained through dust removal by filtration are defeated
It send to calcining furnace.
The method that a kind of light-burned process waste heat of magnesite recycles, the high temperature light burnt powder product preheated air
Whirlwind heat exchanger, high-temperature flue gas preheating magnesite powder raw material whirlwind heat exchanger be made of one or more whirlwind, according to place
Temperature is managed between 1-6 grades.
The method that a kind of light-burned process waste heat of magnesite recycles, by gas-solid after the magnesite powder calcining furnace
Separation, the high-temperature flue gas preheating whirlwind heat-exchange system of magnesite powder, high temperature light burnt powder product preheated air whirlwind heat-exchange system,
Light burnt powder product storage tank is constituted after dust removal by filtration, flue gas emission, cooling, and air is sent into magnesite powder calcining furnace after preheating
Magnesite powder raw material after burner, preheating is sent into magnesite powder calcining furnace.
The method that a kind of light-burned process waste heat of magnesite recycles, the high-temperature flue gas preheating magnesite powder
Dust removal by filtration after whirlwind heat exchange is filter at low temperature dedusting, is discharged after the flue gas after filter at low temperature dedusting is up to standard；High temperature is light-burned
Dust removal by filtration system after the whirlwind heat exchange of powder product preheated air is high temperature filtration dedusting, the air after high temperature filtration dedusting
Fuel gas buring for light-burned process.
Advantages of the present invention is with effect：
1. original cold air is blasted change by blasting in calcining furnace using product energy heats air as fresh air by the present invention
Enter for hot wind to reduce fuel consumption, improve efficiency of combustion, a portion thermal energy can be also used for winter heating and bathing
It is hot Deng using, to reduce the consumption of coal.Reach energy-saving.
2. the present invention is mentioned by making smoke heat energy pass to raw material for the heat exchange between high-temperature flue gas and raw material magnesite
High smoke heat energy recovery utilization rate, has achieved the purpose that raw material preheating, has reduced thermal energy consumed by calcining raw materials.
Detailed description of the invention
Fig. 1 is the schematic diagram of present invention process flow embodiment 1；
Fig. 2 is the schematic diagram of present invention process flow embodiment 2；
Fig. 3 is the schematic diagram of present invention process flow embodiment 3.
Specific embodiment
The present invention is described in detail for illustrated embodiment with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1, clean fuel gas to be passed through to the burner of magnesite calcining furnace first, the hot fume that burning generates passes through gas
Admittedly acting on quick burning magnesite powder, for product through cyclone separator, obtained high temperature light burnt powder is admitted to the heat exchange of product whirlwind
In device, the air after preheating is passed through magnesite using filtering dust collecting by the air blasted using the energy heats air-introduced machine of product
The burner of calcining furnace improves efficiency of combustion, and the number of product whirlwind heat exchanger is 1, after dust removal by filtration and through product whirlwind
Light-burned magnesium products after heat exchanger cooling are transported in storage tank；The high-temperature flue gas obtained through cyclone separator, then revolved through flue gas
Wind heat exchanger preheats raw material magnesite powder, the number 1 of flue gas whirlwind heat exchanger, and the flue gas after heat exchange is up to standard after dust removal by filtration
Direct emission afterwards, the magnesite powder being preheated and the magnesite fine powder obtained through dust removal by filtration are transported in calcining furnace.
Embodiment 2
As shown in Fig. 2, clean fuel gas to be passed through to the burner of magnesite calcining furnace first, the hot fume that burning generates passes through gas
Admittedly acting on quick burning magnesite powder, for product through cyclone separator, obtained high temperature light burnt powder is admitted to the heat exchange of product whirlwind
In device, the air after preheating is passed through magnesite using filtering dust collecting by the air blasted using the energy heats air-introduced machine of product
The burner of calcining furnace improves efficiency of combustion, and the number of product whirlwind heat exchanger is 1, after dust removal by filtration and through product whirlwind
Light-burned magnesium products after heat exchanger cooling are transported in storage tank；The high-temperature flue gas obtained through cyclone separator, then revolved through flue gas
Wind heat exchanger preheats raw material magnesite powder, the number 2 of flue gas whirlwind heat exchanger, and the flue gas after heat exchange is up to standard after dust removal by filtration
Direct emission afterwards, the magnesite powder being preheated and the magnesite fine powder obtained through dust removal by filtration are transported in calcining furnace.
Embodiment 3
As shown in figure 3, clean fuel gas to be passed through to the burner of magnesite calcining furnace first, the hot fume that burning generates passes through gas
Admittedly acting on quick burning magnesite powder, for product through cyclone separator, obtained high temperature light burnt powder is admitted to the heat exchange of product whirlwind
In device, the air after preheating is passed through magnesite using filtering dust collecting by the air blasted using the energy heats air-introduced machine of product
The burner of calcining furnace improves efficiency of combustion, and the number of product whirlwind heat exchanger is 2, after dust removal by filtration and through product whirlwind
Light-burned magnesium products after heat exchanger cooling are transported in storage tank；The high-temperature flue gas obtained through cyclone separator, then flue gas whirlwind
Heat exchanger preheats raw material magnesite powder, the number 4 of flue gas whirlwind heat exchanger, after the flue gas after heat exchange is up to standard after dust removal by filtration
Direct emission, the magnesite powder being preheated and the magnesite fine powder obtained through dust removal by filtration are transported in calcining furnace.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in protection of the invention
Within the scope of.
Claims (4)
1. a kind of method that the light-burned process waste heat of magnesite recycles, which is characterized in that the method is raw using light-burned process
The high temperature light burnt powder product of production is by whirlwind direct contact heat transfer preheated air, cooling product, and the air after preheating is for light-burned
The fuel gas buring of process；The high-temperature flue gas generated using light-burned process directly exchange heat by whirlwind and preheats magnesite powder raw material, cold
But flue gas；Including process in detail below：
Clean fuel gas is passed through to the burner of magnesite calcining furnace first, the hot fume generated of burning acts on quick by gas-solid
Calcined magnesite powder, through cyclone separator, obtained high temperature light burnt powder is admitted in product whirlwind heat exchanger product, utilizes production
Air after preheating, the burning of magnesite calcining furnace is passed through using filtering dust collecting by the air that the energy heats air-introduced machine of product blasts
Device improves efficiency of combustion, and the light-burned magnesium products after dust removal by filtration and after the cooling of product whirlwind heat exchanger are transported to storage tank
In；The high-temperature flue gas obtained through cyclone separator, then preheat raw material magnesite powder through flue gas whirlwind heat exchanger, the cigarette after heat exchange
Direct emission after gas is up to standard after dust removal by filtration, the magnesite powder being preheated and the magnesite fine powder obtained through dust removal by filtration are defeated
It send to calcining furnace.
2. the method that the light-burned process waste heat of a kind of magnesite according to claim 1 recycles, which is characterized in that described
Whirlwind heat exchanger, the high-temperature flue gas of high temperature light burnt powder product preheated air preheat the whirlwind heat exchanger of magnesite powder raw material by one
Or multiple whirlwind are constituted, according to treatment temperature between 1-6 grades.
3. the method that the light-burned process waste heat of a kind of magnesite according to claim 1 recycles, which is characterized in that described
By gas solid separation, whirlwind heat-exchange system, the high temperature light burnt powder product of high-temperature flue gas preheating magnesite powder after magnesite powder calcining furnace
The whirlwind heat-exchange system of preheated air, dust removal by filtration, flue gas emission, it is cooling after light burnt powder product storage tank constitute, after preheating
The magnesite powder raw material that air is sent into after the burner of magnesite powder calcining furnace, preheating is sent into magnesite powder calcining furnace.
4. the method that the light-burned process waste heat of a kind of magnesite according to claim 1 recycles, which is characterized in that described
The dust removal by filtration that high-temperature flue gas preheats after the whirlwind heat exchange of magnesite powder is filter at low temperature dedusting, the cigarette after filter at low temperature dedusting
Discharge after gas is up to standard；Dust removal by filtration system after the whirlwind heat exchange of high temperature light burnt powder product preheated air is high temperature filtration dedusting,
Air after high temperature filtration dedusting is used for the fuel gas buring of light-burned process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734458.8A CN108863114B (en) | 2018-07-06 | 2018-07-06 | Method for recycling waste heat in magnesite light burning process |
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|---|---|---|---|
| CN201810734458.8A CN108863114B (en) | 2018-07-06 | 2018-07-06 | Method for recycling waste heat in magnesite light burning process |
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| CN108863114A true CN108863114A (en) | 2018-11-23 |
| CN108863114B CN108863114B (en) | 2021-09-21 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824282A (en) * | 2019-03-18 | 2019-05-31 | 亨特利（海城）镁矿有限公司 | A kind of method that highly-purity magnesite calcining is run with high temperature vertical kiln energy-saving, environment-friendly and high-efficiency |
| CN110498621A (en) * | 2019-09-02 | 2019-11-26 | 于景坤 | A kind of preparation method of ultra-fine purification concentrate powder magnesite clinker |
| CN110526597A (en) * | 2019-09-03 | 2019-12-03 | 沈阳化工大学 | A kind of method that magnesite cracking process prepares light calcined magnesia |
| CN111348844A (en) * | 2020-03-12 | 2020-06-30 | 辽宁科大中驰镁建材科技有限公司 | System and process for preparing light-burned magnesia powder by using low-grade high-calcium magnesite |
| CN111747663A (en) * | 2020-08-20 | 2020-10-09 | 沈阳工业大学 | Device and process method for preparing light-burned magnesium oxide through suspension calcination |
| CN111777340A (en) * | 2020-08-20 | 2020-10-16 | 辽宁圣世资源环境科技有限公司 | Device for preparing light-burned magnesia and enriching carbon dioxide by self-circulation pyrolysis of flue gas |
| CN111825350A (en) * | 2020-08-20 | 2020-10-27 | 辽宁圣世资源环境科技有限公司 | Device with light-burned magnesium oxide preparation and carbon dioxide collection functions |
| CN111825351A (en) * | 2020-08-20 | 2020-10-27 | 辽宁圣世资源环境科技有限公司 | Device and process for preparing calcined magnesium oxide for magnesium phosphate cement |
| CN112250324A (en) * | 2020-10-14 | 2021-01-22 | 沈阳化工大学 | Method for preparing sintered magnesia from powdery magnesite by two-step method |
| CN112250323A (en) * | 2020-10-14 | 2021-01-22 | 沈阳化工大学 | Method for preparing sintered magnesia from powdery magnesite by one-step method |
| CN112304092A (en) * | 2020-10-14 | 2021-02-02 | 沈阳化工大学 | Powder material fluidized bed sintering device |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824282A (en) * | 2019-03-18 | 2019-05-31 | 亨特利（海城）镁矿有限公司 | A kind of method that highly-purity magnesite calcining is run with high temperature vertical kiln energy-saving, environment-friendly and high-efficiency |
| CN109824282B (en) * | 2019-03-18 | 2021-11-30 | 亨特利（海城）镁矿有限公司 | Energy-saving, environment-friendly and efficient operation method of high-temperature shaft kiln for calcining high-purity magnesia |
| CN110498621B (en) * | 2019-09-02 | 2021-11-05 | 于景坤 | Preparation method of superfine purified concentrate powder sintered magnesia |
| CN110498621A (en) * | 2019-09-02 | 2019-11-26 | 于景坤 | A kind of preparation method of ultra-fine purification concentrate powder magnesite clinker |
| CN110526597A (en) * | 2019-09-03 | 2019-12-03 | 沈阳化工大学 | A kind of method that magnesite cracking process prepares light calcined magnesia |
| CN110526597B (en) * | 2019-09-03 | 2021-11-30 | 沈阳化工大学 | Method for preparing light-burned magnesium oxide by magnesite cracking method |
| CN111348844A (en) * | 2020-03-12 | 2020-06-30 | 辽宁科大中驰镁建材科技有限公司 | System and process for preparing light-burned magnesia powder by using low-grade high-calcium magnesite |
| CN111747663A (en) * | 2020-08-20 | 2020-10-09 | 沈阳工业大学 | Device and process method for preparing light-burned magnesium oxide through suspension calcination |
| CN111825351A (en) * | 2020-08-20 | 2020-10-27 | 辽宁圣世资源环境科技有限公司 | Device and process for preparing calcined magnesium oxide for magnesium phosphate cement |
| CN111825350A (en) * | 2020-08-20 | 2020-10-27 | 辽宁圣世资源环境科技有限公司 | Device with light-burned magnesium oxide preparation and carbon dioxide collection functions |
| CN111777340A (en) * | 2020-08-20 | 2020-10-16 | 辽宁圣世资源环境科技有限公司 | Device for preparing light-burned magnesia and enriching carbon dioxide by self-circulation pyrolysis of flue gas |
| CN111747663B (en) * | 2020-08-20 | 2023-09-15 | 沈阳工业大学 | Device and process method for preparing light-burned magnesium oxide by suspension calcination |
| CN111825351B (en) * | 2020-08-20 | 2023-10-27 | 辽宁东大粉体工程技术有限公司 | Device and process for preparing middle-burned magnesia for magnesium phosphate cement |
| CN111777340B (en) * | 2020-08-20 | 2024-04-23 | 辽宁东大粉体工程技术有限公司 | Device for preparing light burned magnesia and enriching carbon dioxide by smoke self-circulation pyrolysis |
| CN111825350B (en) * | 2020-08-20 | 2024-04-26 | 辽宁东大粉体工程技术有限公司 | Device with light burned magnesia preparation and carbon dioxide collection functions |
| CN112250324A (en) * | 2020-10-14 | 2021-01-22 | 沈阳化工大学 | Method for preparing sintered magnesia from powdery magnesite by two-step method |
| CN112250323A (en) * | 2020-10-14 | 2021-01-22 | 沈阳化工大学 | Method for preparing sintered magnesia from powdery magnesite by one-step method |
| CN112304092A (en) * | 2020-10-14 | 2021-02-02 | 沈阳化工大学 | Powder material fluidized bed sintering device |
| CN112250324B (en) * | 2020-10-14 | 2022-08-12 | 沈阳化工大学 | Method for preparing sintered magnesia from powdery magnesite by two-step method |
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