CN115961151B - Process for simultaneously preparing magnesium metal and titanium by one-step method with zero carbon emission - Google Patents
Process for simultaneously preparing magnesium metal and titanium by one-step method with zero carbon emission Download PDFInfo
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- CN115961151B CN115961151B CN202310040078.5A CN202310040078A CN115961151B CN 115961151 B CN115961151 B CN 115961151B CN 202310040078 A CN202310040078 A CN 202310040078A CN 115961151 B CN115961151 B CN 115961151B
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- magnesium
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- titanium dioxide
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 61
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000010936 titanium Substances 0.000 title claims abstract description 34
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 33
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 57
- 239000011777 magnesium Substances 0.000 claims abstract description 57
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 51
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims abstract description 32
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 24
- 239000005997 Calcium carbide Substances 0.000 claims abstract description 21
- 239000008188 pellet Substances 0.000 claims abstract description 21
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 18
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 15
- 239000010436 fluorite Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 238000007873 sieving Methods 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 12
- 239000011812 mixed powder Substances 0.000 claims description 10
- 239000000395 magnesium oxide Substances 0.000 claims description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 4
- 239000012300 argon atmosphere Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000006722 reduction reaction Methods 0.000 abstract description 19
- 238000006243 chemical reaction Methods 0.000 abstract description 16
- 238000003723 Smelting Methods 0.000 abstract description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 12
- 239000001569 carbon dioxide Substances 0.000 abstract description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 239000010459 dolomite Substances 0.000 description 4
- 229910000514 dolomite Inorganic materials 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910004261 CaF 2 Inorganic materials 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- Y02P10/20—Recycling
Abstract
The invention discloses a process for simultaneously preparing magnesium metal and titanium by a one-step method with zero carbon emission, which comprises the following steps: mixing water-removing serpentine, titanium dioxide, calcium carbide and fluorite according to a proportion to prepare raw materials; grinding and sieving, and pressing into pellets; placing the pellets into a reactor, reducing serpentine by calcium carbide to generate excessive liquid magnesium, and then carrying out reduction reaction with titanium dioxide to generate solid titanium; after the process is finished, the reactor is vacuumized, excessive liquid magnesium is flashed into magnesium vapor to be solidified in a condenser, and collection of metal magnesium is realized. The invention integrates two different smelting processes of magnesium metal and titanium into one reactor to finish one step, which not only solves the problems of large carbon dioxide emission, high reduction temperature and serious reduction pot loss in the Pidgeon magnesium smelting process, but also converts the magnesian reduction titanium dioxide from the original gas-solid reaction into the solid-liquid reaction, greatly promotes the reaction rate, and can collect the excessive magnesium reducer completely, thereby effectively reducing the production cost.
Description
Technical Field
The invention relates to the field of metal titanium smelting, and also relates to the field of metal magnesium thermal smelting, in particular to a process for preparing metal magnesium and titanium by reducing serpentine and titanium dioxide through a zero-carbon emission one-step method, belonging to the field of thermal metallurgy.
Background
Titanium and titanium alloy are widely applied to the fields of aerospace, petrochemical industry, medical appliances and the like by the unique advantages of small density, good corrosion resistance, high specific strength, no toxicity and the like, and the demand of human society for titanium is rising year by year. The magnesian reduction method utilizes magnesium metal to react with titanium tetrachloride, and is a main method for industrially producing titanium sponge. However, the process flow is complex, the energy consumption is high, the environment is heavy, and the cost is very high due to the use of excessive magnesium. The method for preparing the metallic titanium by directly reducing the titanium dioxide by magnesium heat is a promising titanium production method because of simple flow and relatively low cost. However, the method is adopted at present, and excessive magnesium vapor is used for carrying out gas-solid reaction with the titanium dioxide-containing agglomerate, so that the reaction rate is very low and the waste amount of the reducing agent magnesium metal is very large.
As a reducing agent for preparing titanium, the metal magnesium generally needs to be in excess of 50-80%, and the consumption and the waste are large. At present, more than 95% of the original magnesium in the world is produced by the Pidgeon process in the hot process magnesium smelting process, and the method is the most widely used metal magnesium smelting process. The method is to prepare magnesium vapor by reducing and calcining dolomite with ferrosilicon under high temperature and high vacuum. However, the existing Pidgeon process magnesium-smelting enterprises have the problems of high energy consumption, high pollution, large carbon dioxide emission and the like. Raw material dolomite used for smelting magnesium by the Pidgeon process generates nearly half of carbon dioxide gas which is directly discharged into the atmosphere when being calcined at a high temperature of 1200 ℃ to have destructive influence on the local ecological environment; the adoption of ferrosilicon as a reducing agent makes the reduction process always maintain the high vacuum condition of 1200 ℃ and 10Pa or below, and consumes a large amount of fossil energy; the harsh reaction conditions require that the reduction tank is made of special alloy materials, but the defects of easy loss and short service life still exist, and the production cost is high. At present, the Pijiang method for producing 1 ton of original magnesium consumes about 8 tons of standard coal, and discharges 26 tons of high-temperature carbon dioxide. The high energy consumption and the high pollution cause great pressure on energy resources and ecological environment of China, and the 'make carbon peak and carbon neutralization work' is one of important tasks in 2021 in the central economic working conference just closing the curtain. Along with the improvement of the requirements of China on energy consumption and environmental protection and the stricter and stricter international limit of carbon dioxide emission of various countries, the green magnesium smelting process with low energy consumption and low carbon emission is researched and developed, the energy and resource utilization rate is improved, and the reduction of waste gas emission becomes the outlet of the thermal magnesium smelting technology of China, and is the only way for China to go from the China with original magnesium production to the China with strong production.
Disclosure of Invention
Aiming at the defects and problems existing in the existing metallic titanium smelting and traditional Pidgeon magnesium smelting process technology, the invention integrates two processes into a whole, and aims to provide a process for simultaneously preparing metallic magnesium and titanium by one-step reduction of serpentine and titanium dioxide, which realizes zero carbon emission, reduces raw material cost, saves production equipment investment, reduces unit product energy consumption and accelerates chemical reaction speed.
The technical scheme of the invention is realized as follows: a process for preparing magnesium and titanium simultaneously by reducing serpentine and titanium dioxide with zero carbon emission one-step method uses serpentine and titanium dioxide as main raw materials, calcium carbide as a reducing agent and fluorite as a catalyst; the preparation method comprises the following steps:
(1) Firstly, mixing raw materials of water removal serpentine and titanium dioxide, a calcium carbide reducing agent and a fluorite catalyst, and the weight ratio of the components is as follows: 45-50 parts of water removal serpentine powder, 15-20 parts of titanium dioxide powder, 35-40 parts of calcium carbide powder, 3-5 parts of fluorite powder and 100 parts of total mass.
(2) And secondly, placing the prepared materials into a ball mill with a sieve for grinding and sieving, wherein the qualified mixed powder is used for the next stage, and part of unqualified powder is placed into the ball mill again for continuous grinding.
(3) And then sending the qualified mixed powder into a high-pressure twin-roll ball press, and pressing the mixed powder into pellets.
(4) Placing the pressed pellets into a reactor, introducing argon into the reactor to ensure an argon environment, heating the pellets to 950-1100 ℃, producing excessive liquid magnesium metal, and reducing titanium dioxide to generate solid titanium.
(5) And vacuumizing the reactor, and flashing excessive liquid magnesium to obtain magnesium vapor, and solidifying the magnesium vapor in a condenser to collect metal magnesium.
The serpentine raw material can be dehydrated serpentine (3MgO.2SiO) obtained by calcining serpentine ore 2 ) May also be magnesium oxide (MgO) and silicon dioxide (SiO 2 ) A mixture of two substances.
Grinding the water-removing serpentine, titanium dioxide, calcium carbide and fluorite catalyst into powder, and then enabling the particle size number to be higher than 100 meshes.
The qualified mixed powder is extruded into pellets by a ball press, which means that the equivalent diameter of the solid is converted into the solid blocks with the shapes of walnut shape, pillow shape, ellipsoid shape, sphere shape, cylinder shape and the like which are not more than 50 mm.
The vacuum reactor for heating the balls can be externally heated (externally heated) or internally heated (internally heated); the heating can be performed by a heat source such as fuel, or by electric heating, electromagnetic heating, inductance heating, microwave heating, or the like.
And in the process of heating and producing liquid magnesium and solid titanium, an argon atmosphere with the gauge pressure of 0-1000 Pa is always kept in the reactor.
The reactor may be sealed and provided with a magnesium condenser, the reactor being evacuated to flash excess liquid magnesium to magnesium vapour and the absolute pressure in the reactor being below 100Pa when the condenser solidifies.
In the process for preparing magnesium and titanium simultaneously by reducing serpentine and titanium dioxide with the zero-carbon emission one-step method, the pellet reaction temperature in the reactor is 950-1100 ℃.
The reduction of serpentine into liquid magnesium and the reduction of titanium dioxide into solid titanium by liquid magnesium are all carried out in the same reactor. The process uses serpentine to replace dolomite in magnesium smelting by the Pidgeon process as a raw material, avoids the discharge of a large amount of carbon dioxide to the atmosphere in the dolomite calcination process, and realizes zero carbon emission; also because of silica SiO in serpentine 2 With reducing agent calcium carbide CaC 2 Generates very stable 3CaO.2SiO in the reaction process 2 The reaction can occur at 950 ℃ under normal pressure, the reduction temperature is greatly reduced compared with 1200 ℃ used by the traditional Pidgeon process, and the heating cost can be greatly reduced; the reduction temperature and the normal pressure environment condition have much lower material requirements on the reactor used in the process than those of the Pidgeon process, thus greatly reducing the equipment replacement cost; compared with the traditional process for producing the metallic titanium, the process does not need to purchase expensive metallic magnesium as a reducing agent, but generates excessive liquid metallic magnesium as the reducing agent after the serpentine is reduced by the silicon carbide in the pellet, so that the cost of the reducing agent used in the preparation process of the metallic titanium is greatly reduced; the process presses the powdery raw materials into balls, and the magnesium metal and titanium dioxide are subjected to reduction reaction in a liquid state, so that the distance between the reaction raw materials can be reduced, the production reaction speed of the titanium metal is increased, and the utilization rate of the raw materials is improved; the traditional Pidgeon process for smelting magnesium and the magnesium thermal process for producing metallic titanium are integrated into one reactor to be carried out simultaneously, so that the equipment investment is reduced, the equipment utilization rate is improved, and the investment cost of production equipment is reduced.
Detailed Description
Example 1
The ore raw material is 45 parts of common serpentine (3MgO.2SiO) 2 .2H 2 O) and 15 parts of titanium dioxide (TiO 2 ) The reducing agent was 35 parts calcium carbide (CaC) 2 ) The catalyst was 5 parts fluorite (CaF 2 ）。
Firstly, placing common serpentine into a calciner at 500 ℃ to remove crystal water, thus obtaining a calcination product of the dewater serpentine (3MgO.2SiO) 2 ). The chemical reaction that occurs in this process is as follows:
crushing the water-removing serpentine, the titanium dioxide raw material, the calcium carbide reducing agent and the fluorite catalyst, mixing and grinding the crushed materials into powder according to a reasonable proportion required by the reduction reaction, extruding the mixed powder into a block by a press machine, placing the pressed pellet material into a closed reactor, heating the outer wall of the reactor by a heat source, heating the pellets to 1000 ℃ by utilizing radiation heat transfer between the inner wall of the reactor and the pellets and heat conduction of the pellets, and continuously introducing argon under normal pressure to produce solid metallic titanium. And after the reduction reaction in the pellets is completely ended, vacuumizing the reactor, keeping the pressure within 100Pa, changing excessive liquid magnesium in the pellets into gas and condensing in a condenser of the reactor, and collecting to obtain the magnesium metal.
The chemical reaction in the reactor is as follows:
example 2
The ore raw material is 23 parts of silicon dioxide (SiO 2 ) 23 parts of magnesium oxide (MgO) and 15 parts of titanium dioxide (TiO 2 ) The reducing agent was 36 parts calcium carbide (CaC) 2 ) The catalyst was 3 parts fluorite (CaF 2 ）。
Crushing silicon dioxide, magnesium oxide, titanium dioxide raw materials, a calcium carbide reducing agent and a fluorite catalyst, mixing the materials with the mesh number of 150 meshes according to a reasonable proportion required by a reduction reaction, grinding the mixture into powder, extruding the mixed powder into a block by a press, placing the pressed block into a closed reactor, and finally heating the block to 1050 ℃ by utilizing an electric heating wire arranged in the reactor, and keeping the reactor under argon atmosphere under micro-positive pressure to produce the solid metallic titanium. And after the reduction reaction in the pellets is completely ended, vacuumizing the reactor, keeping the pressure within 100Pa, changing excessive liquid magnesium in the pellets into gas and condensing in a condenser of the reactor, and collecting to obtain the magnesium metal.
The chemical reaction in the reactor is as follows:
example 3
The ore raw material is 22 parts of common serpentine (3MgO.2SiO) 2 .2H 2 O), 12 parts of silicon dioxide (SiO 2 ) 12 parts of magnesium oxide (MgO) and 15 parts of titanium dioxide (TiO 2 ) The reducing agent was 35 parts calcium carbide (CaC) 2 ) The catalyst was 4 parts fluorite (CaF 2 ）。
Firstly, placing common serpentine into a calciner at 550 ℃ to remove crystal water, and obtaining a calcination product of the dewater serpentine (3MgO.2SiO) 2 ). The chemical reaction that occurs in this process is as follows:
crushing the water-removing serpentine, silicon dioxide, magnesium oxide, titanium dioxide raw materials, a calcium carbide reducing agent and a fluorite catalyst, mixing and grinding the crushed materials into powder according to a reasonable proportion required by the reduction reaction, extruding the mixed powder into a block by a press, placing the pressed block into a closed reactor, and finally heating the block to 950 ℃ by utilizing an electric heating wire arranged in the reactor, and continuously introducing argon under normal pressure to produce the solid metallic titanium. And after the reduction reaction in the pellets is completely ended, vacuumizing the reactor, keeping the pressure within 100Pa, changing excessive liquid magnesium in the pellets into gas and condensing in a condenser of the reactor, and collecting to obtain the magnesium metal.
The chemical reaction in the reactor is as follows:
Claims (6)
1. a process for preparing magnesium and titanium simultaneously by a zero-carbon emission one-step method is characterized in that: the process takes serpentine and titanium dioxide as main raw materials, calcium carbide as a reducing agent and fluorite as a catalyst; the preparation method comprises the following steps:
(1) Firstly, mixing raw materials of water removal serpentine and titanium dioxide, a calcium carbide reducing agent and a fluorite catalyst, and the weight ratio of the components is as follows: 45-50 parts of water removal serpentine powder, 15-20 parts of titanium dioxide powder, 35-40 parts of calcium carbide powder, 3-5 parts of fluorite powder and 100 parts of total mass part;
(2) Secondly, placing the prepared materials into a ball mill with a sieve for grinding and sieving, wherein the qualified mixed powder is used for the next stage, and part of unqualified powder is placed into the ball mill again for continuous grinding;
(3) Then sending the qualified mixed powder into a high-pressure twin-roll ball press, and pressing the mixed powder into pellets;
(4) Placing the pressed pellets into a reactor, introducing argon into the reactor to ensure an argon environment, heating the pellets to 950-1100 ℃, and reducing titanium dioxide to generate solid titanium after producing excessive liquid magnesium metal;
(5) And vacuumizing the reactor, and flashing excessive liquid magnesium to obtain magnesium vapor, and solidifying the magnesium vapor in a condenser to collect metal magnesium.
2. The process for simultaneously preparing magnesium and titanium with zero carbon emission by one-step method according to claim 1, wherein the process comprises the following steps: the serpentine raw material is dehydrated serpentine 3MgO.2SiO after serpentine ore calcination 2 Or a mixture of magnesium oxide and silicon dioxide.
3. The process for simultaneously preparing magnesium and titanium with zero carbon emission by one-step method according to claim 1, wherein the process comprises the following steps: grinding the water-removing serpentine, titanium dioxide, calcium carbide and fluorite catalyst into powder, and then enabling the granularity number to be 100-200 meshes.
4. The process for simultaneously preparing magnesium and titanium with zero carbon emission by one-step method according to claim 1, wherein the process comprises the following steps: a reactor for heating the balls, wherein the reactor is heated from outside the container or from inside the container; heat source heating or electric heating.
5. The process for simultaneously preparing magnesium and titanium with zero carbon emission by one-step method according to claim 1, wherein the process comprises the following steps: and in the process of heating and producing liquid magnesium and solid titanium, an argon atmosphere with the gauge pressure of 0-1000 Pa is always kept in the reactor.
6. The process for simultaneously preparing magnesium and titanium with zero carbon emission by one-step method according to claim 1, wherein the process comprises the following steps: the reactor is sealed and provided with a magnesium condenser, and the reactor is vacuumized to flash excess liquid magnesium into magnesium vapor, and when the condenser is solidified, the absolute pressure in the reactor is lower than 100Pa.
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| CN202310040078.5A CN115961151B (en) | 2023-01-13 | 2023-01-13 | Process for simultaneously preparing magnesium metal and titanium by one-step method with zero carbon emission |
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| CN202310040078.5A CN115961151B (en) | 2023-01-13 | 2023-01-13 | Process for simultaneously preparing magnesium metal and titanium by one-step method with zero carbon emission |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004052037A (en) * | 2002-07-19 | 2004-02-19 | Katsutoshi Ono | Method and apparatus for refining metallic titanium |
| CN101967566A (en) * | 2010-11-04 | 2011-02-09 | 北京科技大学 | Process for preparing metal magnesium by normal pressure thermal reduction method |
| CN102921953A (en) * | 2012-10-31 | 2013-02-13 | 昆明理工大学 | Method of preparing metal titanium powder through TiO2 |
| JP2017043819A (en) * | 2015-08-28 | 2017-03-02 | 株式会社神戸製鋼所 | Manufacturing method of titanium metal |
| CN111421142A (en) * | 2020-03-25 | 2020-07-17 | 昆明理工大学 | Preparation method of spherical titanium powder |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004052037A (en) * | 2002-07-19 | 2004-02-19 | Katsutoshi Ono | Method and apparatus for refining metallic titanium |
| CN101967566A (en) * | 2010-11-04 | 2011-02-09 | 北京科技大学 | Process for preparing metal magnesium by normal pressure thermal reduction method |
| CN102921953A (en) * | 2012-10-31 | 2013-02-13 | 昆明理工大学 | Method of preparing metal titanium powder through TiO2 |
| JP2017043819A (en) * | 2015-08-28 | 2017-03-02 | 株式会社神戸製鋼所 | Manufacturing method of titanium metal |
| CN111421142A (en) * | 2020-03-25 | 2020-07-17 | 昆明理工大学 | Preparation method of spherical titanium powder |
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