CN102277506A - Process of smelting magnesium by use of heating method - Google Patents
Process of smelting magnesium by use of heating method Download PDFInfo
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- CN102277506A CN102277506A CN2011102170785A CN201110217078A CN102277506A CN 102277506 A CN102277506 A CN 102277506A CN 2011102170785 A CN2011102170785 A CN 2011102170785A CN 201110217078 A CN201110217078 A CN 201110217078A CN 102277506 A CN102277506 A CN 102277506A
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Abstract
The invention relates to a magnesium smelting process and in particular relates to a process of smelting magnesium by use of a heating method. The process comprises the following steps: firstly, crushing a magnesium carbonate-containing ore raw material, a reducing agent and a fluorite catalyst; mixing the materials in a reasonable proportion required by a reduction reaction, and grinding the mixture into powder; extruding the mixed powdered material into balls; putting the extruded ball materials into a closed reactor; and heating, exhausting, warming and vacuumizing the balls to produce metal magnesium. The process method is unique, and has the advantages of good environmentally-friendly effect and high utilization of raw materials.
Description
Technical field
The present invention relates to a kind of magnesium smelting technology, especially relate to a kind of hot method magnesium smelting technology.
Background technology
Traditional hot method process for smelting magnesium is as follows: a kind of is to become calcining and decomposing discharge CO in certain particle size → adding calcining kiln with containing carbonic acid magnesium ore raw material crushing
2→ do not contain CO after will calcining
2Raw material and reductive agent, fluorite catalyzer uniform mixing, grind to form powdery → the be pressed into pelletizing → reducer → heating of packing into and restore magnesium vapor → cooling magnesium vapor and obtain solid or liquid magnesium; Another kind of is will contain carbonic acid magnesium ore raw material crushing to become calcining and decomposing discharge CO in certain particle size → adding calcining kiln
2→ do not contain CO after will calcining
2Raw material and reductive agent, fluorite catalyzer grind to form powdery → uniform mixing respectively and be pressed into the pelletizing → reducer → heating of packing into and restore magnesium vapor → cooling magnesium vapor and obtain solid or liquid magnesium.
The problem that traditional technology exists is:
(1) contain carbonic acid magnesium ore raw material in calcining kiln, the direct heating by fuel is that flame and flue gas directly burn raw material, decomposites CO
2, the CO that its calcining is discharged
2In be mixed with gas and the flue dust that fuel combustion produces, be not purified single component CO
2Gas is unfavorable for it is fully utilized processing, all is usually directly to be discharged in the atmosphere, forms the greenhouse gases effect;
(2) calcining back produces in calcining kiln does not contain CO
2Raw material, in storage, transportation, pressure ball process, can absorb airborne moisture and CO
2Be combined to the preceding magnesiumcarbonate state of calcining, cause the minimizing of material effective component in the follow-up reduction process, reduce the magnesium producing rate of reducing process;
(3) for the consideration of factors such as flue gas air penetrability in the calcination process, the granularity that contains carbonic acid magnesium ore raw material there is certain requirement, can not uses as the magnesium raw materials for metallurgy less than the carbonic acid magnesium ore that contains in small, broken bits of certain size;
(4) calcining and reduction make two bites at a cherry in two complete equipments, and about half that calcination system equipment is huge, complicated operation, energy consumption account for full factory energy consumption, the accumulating long flow path of raw material, during cause the energy, raw material, manually, the particularly remarkable waste of facility investment.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of processing method uniqueness, environment protecting is good, utilization ratio of raw materials is high a kind of hot method magnesium smelting technology are provided.
The present invention realizes in the following way:
A kind of hot method magnesium smelting technology, it is characterized in that: this smelting technology is following steps: ore, reductive agent, the fluorite catalyst breakage that at first will contain magnesiumcarbonate, mix and grind to form powdery by the required rational proportion of reduction reaction, then that mixed powder is agglomerating with the pressing machine extruding, and the pelletizing feed that is pressed into inserted in the airtight reactor, at last by to pellet heating, exhaust, heat up, vacuumize, produce MAGNESIUM METAL;
Chemical reaction in the described reactor divides two stage: a, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on＞600 ℃ of decomposition temperature 15min ~ 2h, heating up and keeping constantly discharging the gas in the reactor in the temperature course; After b, decomposition are finished, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes promptly＞1000 ℃, and maintenance temperature and pressure 30min ~ 2h, between insulation, hold period, magnesium in the raw material is reduced agent and restores magnesium vapor, cools off magnesium vapor then, obtains solid-state or liquid magnesium;
Described during to the pellet heat temperature raising, can outside reactor, heat, also can be from the reactor internal heating;
Described during to the pellet heat temperature raising thermal source can be fuel, also can use electric heating, electromagnetism, inductance or microwave;
The described carbonic acid magnesium ore raw material that contains can be the mixture of rhombspar, wagnerite or wagnerite and Wingdale;
Described reductive agent can be ferrosilicon, coke or coal, also can be calcium carbide, aluminum or aluminum alloy, bauxite or their wherein two or more mixtures;
Described ore, reductive agent, the fluorite catalyzer that contains magnesiumcarbonate grinds to form powdery, is meant that it is worn into granularity is not more than 500 purpose powder;
Powder after the described ore that will contain magnesiumcarbonate, reductive agent, the fluorite catalyst mix is agglomerating with the pressing machine extruding, be meant to be pressed into the solid block that the conversion equivalent diameter is no more than 100mm, this solid block can be walnut shape, pincushion, elliposoidal, sphere or cylindrical;
Described raw material catabolic phase reactor operating pressure is no more than a normal atmosphere or is the negative pressure that is lower than local barometric point;
Raw material decomposites CO under the described raw material catabolic phase reactor operating pressure
2Decomposition temperature be 600 ℃-1000 ℃, described reduction phase reactor vacuum tightness is not for being higher than the absolute pressure of 500Pa, the temperature of reduction phase raw material generation reduction reaction is 1000 ℃-1300 ℃.
The present invention has following effect:
1) processing method uniqueness, good energy-conserving effect: processing method provided by the invention will be at first containing the ore of magnesiumcarbonate, reductive agent, the fluorite catalyst breakage, mix and grind to form powdery by the required rational proportion of reduction reaction, then that mixed powder is agglomerating with the pressing machine extruding, and the pelletizing feed that is pressed into inserted in the airtight reactor, at last by pellet is heated, exhaust, heat up, vacuumize, produce MAGNESIUM METAL, make method for smelting magnesium by hot technology by traditional " raw material calcining and decomposing → batching pressure ball → restore magnesium " three steps, can shorten to " feed proportioning pressure ball → smelt magnesium " two steps, slap-uply saved complicated and huge calcination system, facility investment, manually, energy consumption, wastage of material obviously reduces.
2) environment protecting is good: all chemical reactions of processing method provided by the invention all carry out in airtight reactor, and the chemical reaction in the reactor divides two stage: a, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time, heating up and keeping constantly discharging the gas in the reactor in the temperature course; After b, decomposition are finished, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time, between insulation, hold period, magnesium in the raw material is reduced agent and restores magnesium vapor, cools off magnesium vapor then, obtains solid-state or liquid magnesium.Method provided by the invention contains the ore of magnesiumcarbonate in decomposition course, is to be kept apart the CO that decomposites between flame and flue gas and the raw material by the reactor wall by indirect heating
2Be the single component pure gas, not only environment protecting is good but also help it is fully utilized and handle or environmental protection treatment.
3) utilization ratio of raw materials height: method raw ore provided by the invention is decompositing CO
2Before carry out powder process, pressure ball earlier, ore in small, broken bits like this can use as the refining magnesium raw material, and utilization ratio of raw materials will obviously improve in the whole technological process.
Embodiment
Embodiment one:
A kind of hot method magnesium smelting technology, its ore is rhombspar CaCO
3.MgCO
3Or wagnerite MgCO
3With Wingdale CaCO
3Mixture, reductive agent is a ferrosilicon: the alloy FeSi of silicon and iron, wherein contain a certain proportion of activated silica, catalyzer is fluorite CaF
2
Ore, reductive agent, the fluorite catalyst breakage that at first will contain magnesiumcarbonate, mix and grind to form granularity by the required rational proportion of reduction reaction and be not more than 500 purpose powder, then mixed powder is squeezed into the solid block of approximate walnut shape, pincushion, elliposoidal, sphere that the conversion equivalent diameter is no more than 100mm, different shape such as cylindrical with pressing machine, and the pelletizing feed that is pressed into inserted in the airtight reactor, at last by to pellet heating, exhaust, heat up, vacuumize, produce MAGNESIUM METAL.
Chemical reaction in the reactor divides following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO that produces
2Gas is constantly discharged, and discharges naturally or with machinery extraction reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, following reduction reaction takes place:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
Above-mentioned raw materials catabolic phase reactor operating pressure is no more than a normal atmosphere or is the negative pressure that is lower than local barometric point.
Raw material decomposites CO under the above-mentioned raw materials catabolic phase reactor operating pressure
2Decomposition temperature be 600-1000 ℃, described reduction phase reactor vacuum tightness is not for being higher than the absolute pressure of 500Pa, the temperature of reduction phase raw material generation reduction reaction is 1000-1300 ℃.
Embodiment 2
A kind of hot method magnesium smelting technology, its ore is rhombspar CaCO
3.MgCO
3, or wagnerite MgCO
3With Wingdale CaCO
3Mixture, or wagnerite MgCO
3, reductive agent is rich carbonaceous materials such as coal, coke, refinery coke, graphite, catalyzer is fluorite CaF
2
Ore, reductive agent, the fluorite catalyst breakage that at first will contain magnesiumcarbonate, mix and grind to form granularity by the required rational proportion of reduction reaction and be not more than 500 purpose powder, then mixed powder is squeezed into the solid block of approximate walnut shape, pincushion, elliposoidal, sphere that the conversion equivalent diameter is no more than 100mm, different shape such as cylindrical with pressing machine, and the pelletizing feed that is pressed into inserted in the airtight reactor, at last by to pellet heating, exhaust, heat up, vacuumize, produce MAGNESIUM METAL.
When raw material is a rhombspar, or wagnerite MgCO
3With Wingdale CaCO
3Mixture the time, the chemical reaction in the reactor divides following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO that produces
2Gas is constantly discharged, and discharges naturally or with machinery extraction reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, following reduction reaction takes place:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
When raw material was wagnerite, the chemical reaction in the reactor divided following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO that produces
2Gas is constantly discharged, and discharges naturally or with machinery extraction reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, following reduction reaction takes place:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
Embodiment 3
A kind of hot method magnesium smelting technology, its ore is rhombspar CaCO
3.MgCO
3, or wagnerite MgCO
3With Wingdale CaCO
3Mixture, or wagnerite MgCO
3, reductive agent is calcium carbide CaC
2, catalyzer is fluorite CaF
2
Ore, reductive agent, the fluorite catalyst breakage that at first will contain magnesiumcarbonate, mix and grind to form granularity by the required rational proportion of reduction reaction and be not more than 500 purpose powder, then mixed powder is squeezed into the solid block of approximate walnut shape, pincushion, elliposoidal, sphere that the conversion equivalent diameter is no more than 100mm, different shape such as cylindrical with pressing machine, and the pelletizing feed that is pressed into inserted in the airtight reactor, at last by to pellet heating, exhaust, heat up, vacuumize, produce MAGNESIUM METAL.
When raw material is a rhombspar, or wagnerite MgCO
3With Wingdale CaCO
3Mixture constantly, the chemical reaction in the reactor divides following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO that produces
2Gas is constantly discharged, and discharges naturally or with machinery extraction reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, following reduction reaction takes place:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
When raw material was wagnerite, the chemical reaction in the reactor divided following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO that produces
2Gas is constantly discharged, and discharges naturally or with machinery extraction reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, following reduction reaction takes place:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
Embodiment 4
A kind of hot method magnesium smelting technology, its ore is rhombspar CaCO
3.MgCO
3, or wagnerite MgCO
3With Wingdale CaCO
3Mixture, or wagnerite MgCO
3, reductive agent is rich aluminiferous materials such as aluminium, aluminium alloy, bauxite, catalyzer is fluorite CaF
2
Ore, reductive agent, the fluorite catalyst breakage that at first will contain magnesiumcarbonate, mix and grind to form granularity by the required rational proportion of reduction reaction and be not more than 500 purpose powder, then mixed powder is squeezed into the solid block of approximate walnut shape, pincushion, elliposoidal, sphere that the conversion equivalent diameter is no more than 100mm, different shape such as cylindrical with pressing machine, and the pelletizing feed that is pressed into inserted in the airtight reactor, at last by to pellet heating, exhaust, heat up, vacuumize, produce MAGNESIUM METAL.
When raw material is a rhombspar, or wagnerite MgCO
3With Wingdale CaCO
3Mixture constantly, the chemical reaction in the reactor divides following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO2 gas that produces is constantly discharged, and discharges naturally or with mechanical extraction reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, following reduction reaction takes place:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
When raw material was wagnerite, the chemical reaction in the reactor divided following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO that produces
2Gas is constantly discharged, and discharges naturally or with machinery extraction reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, following reduction reaction takes place:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
Embodiment 5
A kind of hot method magnesium smelting technology, its ore is rhombspar CaCO
3.MgCO
3, or wagnerite MgCO
3With Wingdale CaCO
3Mixture, or wagnerite MgCO
3, reductive agent is ferrosilicon, calcium carbide, rich carbonaceous material, is rich in the wherein mixture more than 2 kinds such as aluminum material that catalyzer is fluorite CaF
2
Ore, reductive agent, the fluorite catalyst breakage that at first will contain magnesiumcarbonate, mix and grind to form powdery by the required rational proportion of reduction reaction, then that mixed powder is agglomerating with the pressing machine extruding, and the pelletizing feed that is pressed into inserted in the airtight reactor, at last by to pellet heating, exhaust, heat up, vacuumize, produce MAGNESIUM METAL.
When raw material is a rhombspar, or wagnerite MgCO
3With Wingdale CaCO
3Mixture constantly, the chemical reaction in the reactor divides following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO that produces
2Gas is constantly discharged, and discharges naturally or with machinery extraction, reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, according to reductive agent the ingredients of a mixture difference, following reduction reaction takes place:
When in the reductive agent ferrosilicon being arranged:
When in the reductive agent carbon being arranged:
When in the reductive agent calcium carbide being arranged:
When in the reductive agent aluminium being arranged:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
When raw material was wagnerite, the chemical reaction in the reactor divided following two stages:
A, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on decomposition temperature for some time.At this moment following decomposition reaction takes place:
The CO that produces
2Gas is constantly discharged, and discharges naturally or with machinery extraction reactor.
B, decompose finish after, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes, and keep temperature and pressure for some time.Between insulation, hold period, according to reductive agent the ingredients of a mixture difference, following reduction reaction takes place:
When in the reductive agent carbon being arranged:
When in the reductive agent calcium carbide being arranged:
When in the reductive agent aluminium being arranged:
After the magnesium vapor that produces is cooled, obtain solid-state or liquid metal magnesium.
Raw material decomposites CO under the above-mentioned raw materials catabolic phase reactor operating pressure
2Decomposition temperature be 600-1000 ℃, described reduction phase reactor vacuum tightness is not for being higher than the absolute pressure of 500Pa, the temperature of reduction phase raw material generation reduction reaction is 1000-1300 ℃.
Claims (10)
1. hot method magnesium smelting technology, it is characterized in that: this smelting technology is following steps: ore, reductive agent, the fluorite catalyst breakage that at first will contain magnesiumcarbonate, mix and grind to form powdery by the required rational proportion of reduction reaction, then that mixed powder is agglomerating with the pressing machine extruding, and the pelletizing feed that is pressed into inserted in the airtight reactor, at last by to pellet heating, exhaust, heat up, vacuumize, produce MAGNESIUM METAL.
2. a kind of hot method magnesium smelting technology as claimed in claim 1 is characterized in that: the chemical reaction in the described reactor divides two stage: a, be heated to pelletizing feed that raw material decomposites CO under the reactor operating pressure
2Decomposition temperature, and temperature remained on＞600 ℃ of decomposition temperature 15min ~ 2h, heating up and keeping constantly discharging the gas in the reactor in the temperature course; After b, decomposition are finished, vacuumize and continue raw material heat temperature raising to wherein to reactor, more than the temperature of the raw material generation reduction reaction after temperature reaches reductive agent under the reactor vacuum tightness and decomposes promptly＞1000 ℃, and maintenance temperature and pressure 30min ~ 2h, between insulation, hold period, magnesium in the raw material is reduced agent and restores magnesium vapor, cools off magnesium vapor then, obtains solid-state or liquid magnesium.
3. a kind of hot method magnesium smelting technology as claimed in claim 1 is characterized in that: described during to the pellet heat temperature raising, can outside reactor, heat, and also can be from the reactor internal heating.
4. a kind of hot method magnesium smelting technology as claimed in claim 1 is characterized in that: described during to the pellet heat temperature raising thermal source can be fuel, also can use electric heating, electromagnetism, inductance or microwave.
5. a kind of hot method magnesium smelting technology as claimed in claim 1 is characterized in that: the described carbonic acid magnesium ore raw material that contains can be the mixture of rhombspar, wagnerite or wagnerite and Wingdale.
6. a kind of hot method magnesium smelting technology as claimed in claim 1, it is characterized in that: described reductive agent can be ferrosilicon, coke or coal, also can be calcium carbide, aluminum or aluminum alloy, bauxite or their wherein two or more mixtures.
7. a kind of hot method magnesium smelting technology as claimed in claim 1 is characterized in that: described ore, reductive agent, the fluorite catalyzer that contains magnesiumcarbonate grinds to form powdery, is meant that it is worn into granularity is not more than 500 purpose powder.
8. a kind of hot method magnesium smelting technology as claimed in claim 1, it is characterized in that: the powder after the described ore that will contain magnesiumcarbonate, reductive agent, the fluorite catalyst mix is agglomerating with the pressing machine extruding, be meant to be pressed into the solid block that the conversion equivalent diameter is no more than 100mm, this solid block can be walnut shape, pincushion, elliposoidal, sphere or cylindrical.
9. a kind of hot method magnesium smelting technology as claimed in claim 1 is characterized in that: described raw material catabolic phase reactor operating pressure is no more than a normal atmosphere or is the negative pressure that is lower than local barometric point.
10. a kind of hot method magnesium smelting technology as claimed in claim 1 is characterized in that: raw material decomposites CO under the described raw material catabolic phase reactor operating pressure
2Decomposition temperature be 600 ℃-1000 ℃, described reduction phase reactor vacuum tightness is not for being higher than the absolute pressure of 500Pa, the temperature of reduction phase raw material generation reduction reaction is 1000 ℃-1300 ℃.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534251A (en) * | 2012-03-07 | 2012-07-04 | 关树翔 | Yield and efficiency increasing method for smelting rough metal magnesium by Pidgeon process |
| CN102965524A (en) * | 2012-12-18 | 2013-03-13 | 东北大学 | Method for smelting magnesium through vacuum thermal reduction of precast pellets |
| CN103233122A (en) * | 2013-05-06 | 2013-08-07 | 重庆大学 | Method for preparing metal magnesium by carbothermic reduction of magnesium ores |
| CN103882247A (en) * | 2014-04-10 | 2014-06-25 | 于洪喜 | Magnesium smelting technique by microwave heating |
| CN104164576A (en) * | 2014-08-19 | 2014-11-26 | 北京神雾环境能源科技集团股份有限公司 | Method for preparing magnesium |
| CN104789775A (en) * | 2015-04-10 | 2015-07-22 | 东北大学 | Preparation method and use method of aluminum-containing magnesium-smelting reducing agent |
| CN105567969A (en) * | 2015-12-17 | 2016-05-11 | 于洪喜 | Magnesium smelting process with microwave carbon method |
| CN105950861A (en) * | 2016-07-15 | 2016-09-21 | 东北大学 | Preparation method for magnesium smelting dolomite prefabricated pellets |
| CN106222415A (en) * | 2016-09-20 | 2016-12-14 | 红河学院 | A kind of carbothermic method produces magnesium metal reducing agent and preparation method thereof |
| CN110592377A (en) * | 2019-08-02 | 2019-12-20 | 长安大学 | Metal magnesium carbon thermal reduction process and device |
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| CN101397609A (en) * | 2008-09-18 | 2009-04-01 | 昆明理工大学 | Method for preparing magnesium metal by giobertite vacuum carbon thermal reduction |
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| CN101397609A (en) * | 2008-09-18 | 2009-04-01 | 昆明理工大学 | Method for preparing magnesium metal by giobertite vacuum carbon thermal reduction |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534251A (en) * | 2012-03-07 | 2012-07-04 | 关树翔 | Yield and efficiency increasing method for smelting rough metal magnesium by Pidgeon process |
| CN102965524A (en) * | 2012-12-18 | 2013-03-13 | 东北大学 | Method for smelting magnesium through vacuum thermal reduction of precast pellets |
| CN103233122A (en) * | 2013-05-06 | 2013-08-07 | 重庆大学 | Method for preparing metal magnesium by carbothermic reduction of magnesium ores |
| CN103882247A (en) * | 2014-04-10 | 2014-06-25 | 于洪喜 | Magnesium smelting technique by microwave heating |
| CN103882247B (en) * | 2014-04-10 | 2015-09-02 | 于洪喜 | Microwave heating refining magnesium technology |
| CN104164576A (en) * | 2014-08-19 | 2014-11-26 | 北京神雾环境能源科技集团股份有限公司 | Method for preparing magnesium |
| CN104164576B (en) * | 2014-08-19 | 2017-02-01 | 北京神雾环境能源科技集团股份有限公司 | Method for preparing magnesium |
| CN104789775A (en) * | 2015-04-10 | 2015-07-22 | 东北大学 | Preparation method and use method of aluminum-containing magnesium-smelting reducing agent |
| CN105567969A (en) * | 2015-12-17 | 2016-05-11 | 于洪喜 | Magnesium smelting process with microwave carbon method |
| CN105950861A (en) * | 2016-07-15 | 2016-09-21 | 东北大学 | Preparation method for magnesium smelting dolomite prefabricated pellets |
| CN106222415A (en) * | 2016-09-20 | 2016-12-14 | 红河学院 | A kind of carbothermic method produces magnesium metal reducing agent and preparation method thereof |
| CN110592377A (en) * | 2019-08-02 | 2019-12-20 | 长安大学 | Metal magnesium carbon thermal reduction process and device |
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