CN109055753A - A kind of method that alumina carbon thermal reduction prepares metallic aluminium - Google Patents
A kind of method that alumina carbon thermal reduction prepares metallic aluminium Download PDFInfo
- Publication number
- CN109055753A CN109055753A CN201810852461.XA CN201810852461A CN109055753A CN 109055753 A CN109055753 A CN 109055753A CN 201810852461 A CN201810852461 A CN 201810852461A CN 109055753 A CN109055753 A CN 109055753A
- Authority
- CN
- China
- Prior art keywords
- sintering
- metallic aluminium
- carbon dust
- present
- alumina powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 45
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000004411 aluminium Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000009467 reduction Effects 0.000 title claims abstract description 16
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 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 61
- 238000005245 sintering Methods 0.000 claims abstract description 47
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 34
- 239000000428 dust Substances 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000571 coke Substances 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 3
- 238000004939 coking Methods 0.000 claims description 3
- 239000002006 petroleum coke Substances 0.000 claims description 3
- 238000006722 reduction reaction Methods 0.000 abstract description 19
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 229920006926 PFC Polymers 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 3
- 229930195733 hydrocarbon Natural products 0.000 abstract description 3
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052710 silicon Inorganic materials 0.000 abstract description 2
- 239000010703 silicon Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000002932 luster Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 238000009866 aluminium metallurgy Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/02—Obtaining aluminium with reducing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of methods that alumina carbon thermal reduction prepares metallic aluminium, it is suppressed after alumina powder, carbon dust and water are mixed, then the first sintering is carried out at 800~1000 DEG C, finally 1400~1600 DEG C of second sintering of progress under vacuum conditions, obtain metallic aluminium.The present invention is using alumina powder as silicon source, and using carbon dust as reducing agent, the first sintering is carried out at 800~1000 DEG C, and then 1400~1600 DEG C of second sintering of progress, reduction obtain metallic aluminium under vacuum conditions.The present invention reduces the temperature of carbothermic reduction reaction, obtains metallic aluminium at a lower temperature, reduce energy consumption, and without the generation of PFCs gas in preparation process by the second sintering under multi-steps sintering and vacuum condition.The experimental results showed that method provided by the invention is simple, low energy consumption, does not generate perfluorinated hydrocarbon, does not generate the substances such as red mud.
Description
Technical field
The present invention relates to technical field of metal material preparation, in particular to a kind of alumina carbon thermal reduction prepares metallic aluminium
Method.
Background technique
Aluminium is a kind of metal of the silvery white with thermal conductive resin, electric conductivity and chemical property wave very living, aluminium element
Content in the earth's crust accounts for about 8.8%.Metallic aluminium is with density is low, corrosion resistance is excellent, thermal conductivity is good, elasticity modulus
The advantages that high.Aluminium alloy has many advantages, such as light-weight, corrosion-resistant, easy conductive, easily extends, and is widely used in communications and transportation, packet
The every field such as dress, building, electrical, aerospace and military affairs.In the metal material that the mankind use, the consumption figure of aluminium is only second to
Steel, it has also become the second largest metal.
The metallurgy of aluminium it is with a long history, France in 1845 begin to chemical method produce aluminium, by many years to aluminum electrolysis technology
Continuous research, electrolytic aluminium have become the world produce the most important method of aluminium.Currently, the method for aluminium metallurgy is broadly divided into two major classes:
Electrolysis method and thermal reduction.The former mainly includes that aluminium oxide-cryolite fused salt electrolysis method and chlorination aluminium reduction process, the latter mainly wrap
Include electrothermal way and carbothermic method.
But that there are process flows is various, building equipment investment is big, energy consumption is high, has greenhouse gases and perfluorocarbon for electrolysis method
The disadvantages of discharge of compound (PFCs), generation red mud, and pollutant is very serious for the harm of human body and environment.Electrothermal way
Also although primary aluminum is able to solve the problem of pollution, but cost is higher compared with electrolysis method, causes it in fine aluminium industrially without big prospect.
The mode of carbothermic method is mainly blast furnace aluminium metallurgy, and principle is to be reduced directly aluminium oxide with carbon, and the technology of blast furnace aluminium metallurgy is similar
In blast furnace ironmaking, but higher temperature (2000~2200 DEG C) is needed relative to blast furnace ironmaking, energy consumption is still higher.
Summary of the invention
The purpose of the present invention is to provide a kind of methods that alumina carbon thermal reduction prepares metallic aluminium.Side provided by the invention
Low energy consumption for method, and does not generate PFCs gas.
The present invention provides a kind of methods that alumina carbon thermal reduction prepares metallic aluminium, comprising the following steps:
(1) it is suppressed after mixing alumina powder, carbon dust and water, obtains green compact；
(2) green compact for obtaining the step (1) carries out the first sintering, obtains dry body；It is described first sintering temperature be
800~1000 DEG C；
(3) dry body that the step (2) obtains is subjected to the second sintering under vacuum conditions, obtains metallic aluminium；Described
The temperature of two sintering is 1400~1600 DEG C.
Preferably, the mass ratio of alumina powder and carbon dust is 7:(3~5 in the step (1)).
Preferably, in the step (1) water quality be alumina powder and carbon dust gross mass 1/ (8~10).
Preferably, the material of the carbon dust is one of coke, petroleum coke and coking coal or a variety of.
Preferably, the partial size of the coke is 200 mesh or less.
Preferably, the partial size of the alumina powder is 200 mesh or less.
Preferably, the time of the first sintering is 30~60min in the step (2).
Preferably, the time of the first sintering is 30~90min in the step (3).
Preferably, the pressure of vacuum condition is 0.05~1Pa in the step (3).
Preferably, the pressure suppressed in the step (1) is 5~10MPa.
The present invention provides a kind of methods that alumina carbon thermal reduction prepares metallic aluminium, comprising the following steps: by aluminium oxide
It is suppressed after powder, carbon dust and water mixing, the first sintering is then carried out at 800~1000 DEG C, finally under vacuum conditions 1400
~1600 DEG C carry out the second sintering, obtain metallic aluminium.The present invention is using alumina powder as silicon source, using carbon dust as reducing agent, 800~
1000 DEG C carry out the first sintering, and then 1400~1600 DEG C of second sintering of progress, reduction obtain metallic aluminium under vacuum conditions.This
Invention reduces the temperature of carbothermic reduction reaction, in lower temperature by the second sintering under multi-steps sintering and vacuum condition
Metallic aluminium is obtained under degree, reduces energy consumption, and without the generation of PFCs gas in preparation process.The experimental result of embodiment
Show that method provided by the invention is simple, low energy consumption, does not generate perfluorinated hydrocarbon, does not generate the substances such as red mud, the dirt to environment
Dye is substantially reduced.
Detailed description of the invention
Fig. 1 is the process flow chart for the method that alumina carbon thermal reduction prepares metallic aluminium in the present invention.
Specific embodiment
The present invention provides a kind of methods that alumina carbon thermal reduction prepares metallic aluminium, comprising the following steps:
(1) it is suppressed after mixing alumina powder, carbon dust and water, obtains green compact；
(2) green compact for obtaining the step (1) carries out the first sintering, obtains dry body；It is described first sintering temperature be
800~1000 DEG C；
(3) dry body that the step (2) obtains is subjected to the second sintering under vacuum conditions, obtains metallic aluminium；Described
The temperature of two sintering is 1400~1600 DEG C.
Alumina carbon thermal reduction provided by the invention prepares the process flow chart of the method for metallic aluminium as shown in Figure 1, by oxygen
Tabletting obtains metallic aluminium through vacuum carbothermal reduction after change aluminium, carbon source and distilled water mixing.
The present invention suppresses after mixing alumina powder, carbon dust and water, obtains green compact.The present invention is to the aluminium oxide
The not special restriction of operation of the mixing of powder, carbon dust and water, using the mixed material well known to those skilled in the art for preparing
Technical solution.
In the present invention, the mass ratio of the alumina powder and carbon dust is preferably 7:(3~5), more preferably 7:4.At this
In invention, the mass ratio of the alumina powder and carbon dust can be further ensured that alumina powder by sufficiently also within the above range
Original, and generate less CO2Isothermal chamber gas.
In the present invention, the partial size of the alumina powder is preferably 200 mesh hereinafter, more preferably 50~150 mesh, most preferably
For 100 mesh.The present invention does not have special restriction to the source of the alumina powder, using well known to those skilled in the art commercially available
Product.
In the present invention, the material of the carbon dust is one of coke, petroleum coke and coking coal or a variety of.In the present invention
In, 200 mesh is hereinafter, more preferably 50~150 mesh, most preferably 100 mesh.The present invention is to the source of the carbon dust without spy
Different restriction, using commercial product well known to those skilled in the art.In the present invention, the carbon dust is as reducing agent,
Aluminium oxide can be reduced to metallic aluminium under the high temperature conditions.
In the present invention, the quality of the water is preferably 1/ (8~10) of alumina powder and carbon dust gross mass, more preferably
1/9.In the present invention, the water is preferably distilled water.In the present invention, the water energy enough mixes alumina powder and carbon dust equal
It is even, it is used to better green compact.
In the present invention, the pressure of the compacting is preferably 5~10MPa, more preferably 6~9MPa, most preferably 7~
8MPa.In the present invention, the compacting can guarantee coming into full contact with for alumina powder and carbon dust during follow-up sintering, convenient for also
The progress of original reaction.
After obtaining green compact, the green compact is carried out the first sintering by the present invention, obtains dry body.In the present invention, described first
The temperature of sintering is 800~1000 DEG C, preferably 850~950 DEG C, more preferably 900 DEG C.In the present invention, described first burns
The time of knot is preferably 30~60min, more preferably 40~50min, most preferably 45min.In the present invention, described first burns
During knot, water evaporation in green compact, while making the green compact of sintering that there is better performance using the carbonization of coke, with solution
Thorax phenomenon is certainly sprayed under vacuum.
The present invention does not have special restriction to the device of first sintering, using vacuum well known to those skilled in the art
Heating device.The present invention does not have special restriction to the heating rate for being warming up to first sintering temperature, using ability
Heating rate known to field technique personnel.
After obtaining dry body, the dry body is carried out the second sintering by the present invention under vacuum conditions, obtains metallic aluminium.In this hair
In bright, the temperature of second sintering is 1400~1600 DEG C, preferably 1500~1550 DEG C, more preferably 1600 DEG C.At this
In invention, the time of second sintering is preferably 30~90min, more preferably 40~80min, most preferably 50~70min.
In the present invention, the carbothermic reduction reaction for the aluminium oxide that reacts in second sintering process, specific equation are as follows:
Al2O3+3C→2Al(g)+3CO。
The present invention does not have special restriction to the heating rate for being warming up to second sintering temperature, using art technology
Heating rate known to personnel.The present invention does not have special restriction to the device of second sintering, using this field skill
Vacuum heater known to art personnel.The present invention is not special to the heating rate for being warming up to second sintering temperature
Restriction, using heating rate well known to those skilled in the art.
In the present invention, the pressure of the vacuum condition is preferably 0.05~1Pa, more preferably 0.06~0.09Pa, most
Preferably 0.07~0.08Pa.In the present invention, the vacuum condition is low vacuum, since alumina carbon thermal reduction prepares metal
The reaction of aluminium is the reaction that gas volume increases, and the reaction can be effectively facilitated and carry out to the right by reducing vacuum degree, so as to
Carbothermic reduction reaction is realized at lower temperature.
The gaseous metal of generation is preferably carried out condensation collection after the completion of the second sintering by the present invention, obtains metallic aluminium.
The present invention operates not special restriction by condensation to described, is using condensing unit well known to those skilled in the art
It can.
The present invention reduces the temperature of carbothermic reduction reaction by the second sintering under the first sintering and vacuum condition,
Metallic aluminium is obtained at a lower temperature, reduces energy consumption, and without the generation of PFCs gas in preparation process.
In order to further illustrate the present invention, preparation gold is heat-treated to alumina carbon provided by the invention below with reference to embodiment
The method for belonging to aluminium is described in detail, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1:
Step 1 matches aluminium oxide and carbon dust according to mass ratio for 7:3, and it is that aluminium oxide and carbon dust are total that quality, which is added,
The water of quality 1/8 is uniformly mixed, tabletting is carried out under the pressure of 5MPa；
The material of step 1 is put into graphite crucible by step 2, is covered condenser in crucible top, is closed vacuum drying oven, lid
The material is heated to 800 DEG C of sintering 60min first by upper condenser, is extracted vacuum and is controlled pressure in 0.05Pa or so, in temperature
Degree arrives the metallic aluminium with metallic luster after keeping the temperature 90min under conditions of being 1400 DEG C.
Embodiment 2:
Step 1 matches aluminium oxide and carbon dust according to mass ratio for 7:4, and it is that aluminium oxide and carbon dust are total that quality, which is added,
The water of quality 1/9 is uniformly mixed, tabletting is carried out under the pressure of 6MPa；
The material of step 1 is put into graphite crucible by step 2, is covered condenser in crucible top, is closed vacuum drying oven, lid
The material is heated to 900 DEG C of sintering 50min first by upper condenser, is extracted vacuum and is controlled pressure in 0.1Pa or so, in temperature
Degree arrives the metallic aluminium with metallic luster after keeping the temperature 75min under conditions of being 1450 DEG C.
Embodiment 3:
Step 1 matches aluminium oxide and carbon dust according to mass ratio for 7:5, and it is that aluminium oxide and carbon dust are total that quality, which is added,
The water of quality 1/10 is uniformly mixed, tabletting is carried out under the pressure of 7MPa；
The material of step 1 is put into graphite crucible by step 2, is covered condenser in crucible top, is closed vacuum drying oven, lid
The material is heated to 900 DEG C of sintering 50min first by upper condenser, and extraction vacuum controls pressure in 1Pa or so when pressure,
To the metallic aluminium with metallic luster after heat preservation 40min under conditions of temperature is 1500 DEG C.
Embodiment 4:
Step 1 matches aluminium oxide and carbon dust according to mass ratio for 7:3, and it is that aluminium oxide and carbon dust are total that quality, which is added,
The water of quality 1/10 is uniformly mixed, tabletting is carried out under the pressure of 10MPa；
The material of step 1 is put into graphite crucible by step 2, is covered condenser in crucible top, is closed vacuum drying oven, lid
The material is heated to 1000 DEG C of sintering 30min first by upper condenser, is extracted vacuum and is controlled pressure in 0.05Pa, in temperature
The metallic aluminium with metallic luster is arrived after keeping the temperature 30min under conditions of being 1600 DEG C.
As can be seen from the above embodiments, method provided by the invention is simple, and low energy consumption, and the CO generated2Isothermal chamber gas
Body substantially reduces and does not generate perfluorinated hydrocarbon, does not generate the substances such as red mud, is substantially reduced to the pollution of environment.
The above is only a preferred embodiment of the present invention, it is not intended to limit the present invention in any form.It should
It points out, for those skilled in the art, without departing from the principle of the present invention, if can also make
Dry improvements and modifications, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
1. a kind of method that alumina carbon thermal reduction prepares metallic aluminium, comprising the following steps:
(1) it is suppressed after mixing alumina powder, carbon dust and water, obtains green compact；
(2) green compact for obtaining the step (1) carries out the first sintering, obtains dry body；It is described first sintering temperature be 800~
1000℃；
(3) dry body that the step (2) obtains is subjected to the second sintering under vacuum conditions, obtains metallic aluminium；Described second burns
The temperature of knot is 1400~1600 DEG C.
2. the method according to claim 1, wherein in the step (1) alumina powder and carbon dust mass ratio
For 7:(3~5).
3. method according to claim 1 or 2, which is characterized in that in the step (1) quality of water be alumina powder and
1/ (8~10) of carbon dust gross mass.
4. the method according to claim 1, wherein the material of the carbon dust is in coke, petroleum coke and coking coal
It is one or more.
5. method according to claim 1 or 4, which is characterized in that the partial size of the carbon dust is 200 mesh or less.
6. the method according to claim 1, wherein the partial size of the alumina powder is 200 mesh or less.
7. the method according to claim 1, wherein in the step (2) first sintering time be 30~
60min。
8. the method according to claim 1, wherein in the step (3) first sintering time be 30~
90min。
9. method according to claim 1 or 8, which is characterized in that the pressure of vacuum condition is 0.05 in the step (3)
~1Pa.
10. the method according to claim 1, wherein the pressure suppressed in the step (1) is 5~10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852461.XA CN109055753A (en) | 2018-07-27 | 2018-07-27 | A kind of method that alumina carbon thermal reduction prepares metallic aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852461.XA CN109055753A (en) | 2018-07-27 | 2018-07-27 | A kind of method that alumina carbon thermal reduction prepares metallic aluminium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109055753A true CN109055753A (en) | 2018-12-21 |
Family
ID=64831522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810852461.XA Pending CN109055753A (en) | 2018-07-27 | 2018-07-27 | A kind of method that alumina carbon thermal reduction prepares metallic aluminium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109055753A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797285A (en) * | 2019-04-02 | 2019-05-24 | 昆明理工大学 | A kind of method that the indirect carbon thermal reduction of aluminium oxide prepares metallic aluminium |
| CN109913665A (en) * | 2019-04-11 | 2019-06-21 | 昆明理工大学 | A kind of method that bauxite vacuum distillation prepares metallic aluminium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752234A (en) * | 2005-10-18 | 2006-03-29 | 昆明理工大学 | Vacuum carbon heat reduction aluminium smelting method |
| CN101462723A (en) * | 2009-01-05 | 2009-06-24 | 昆明理工大学 | Method for preparing high purity silicon aluminum silicon alloy by vacuum carbon thermal reduction |
| CN102211937A (en) * | 2010-04-07 | 2011-10-12 | 清华大学 | Method for synthesizing high-purity aluminum silicon carbon superfine powder |
| CN102442668A (en) * | 2011-10-08 | 2012-05-09 | 昆明理工大学 | Method for preparing aluminum carbide from aluminum oxide |
-
2018
- 2018-07-27 CN CN201810852461.XA patent/CN109055753A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752234A (en) * | 2005-10-18 | 2006-03-29 | 昆明理工大学 | Vacuum carbon heat reduction aluminium smelting method |
| CN101462723A (en) * | 2009-01-05 | 2009-06-24 | 昆明理工大学 | Method for preparing high purity silicon aluminum silicon alloy by vacuum carbon thermal reduction |
| CN102211937A (en) * | 2010-04-07 | 2011-10-12 | 清华大学 | Method for synthesizing high-purity aluminum silicon carbon superfine powder |
| CN102442668A (en) * | 2011-10-08 | 2012-05-09 | 昆明理工大学 | Method for preparing aluminum carbide from aluminum oxide |
Non-Patent Citations (3)
| Title |
|---|
| 冯月斌等: "真空下以煤还原氧化铝的实验", 《轻金属》 * |
| 武洁花: "真空还原铝土矿制备金属铝的工艺研究（备料部分）", 《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅰ辑》 * |
| 王鹏程等: "真空条件下石墨还原氧化铝的实验研究", 《轻金属》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797285A (en) * | 2019-04-02 | 2019-05-24 | 昆明理工大学 | A kind of method that the indirect carbon thermal reduction of aluminium oxide prepares metallic aluminium |
| CN109913665A (en) * | 2019-04-11 | 2019-06-21 | 昆明理工大学 | A kind of method that bauxite vacuum distillation prepares metallic aluminium |
| CN109913665B (en) * | 2019-04-11 | 2020-03-10 | 昆明理工大学 | Method for preparing metal aluminum by bauxite vacuum distillation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3495517B1 (en) | Method for preparing reduced titanium powder by multi-stage deep reduction | |
| KR101763676B1 (en) | Method for smelting magnesium quickly and continuously | |
| CN109055753A (en) | A kind of method that alumina carbon thermal reduction prepares metallic aluminium | |
| Yuan et al. | Aluminum production by carbothermo-chlorination reduction of alumina in vacuum | |
| CN106517328B (en) | The method and apparatus that a kind of one-step method prepares high-purity low metal impurity tantalic chloride | |
| WO2020098176A1 (en) | Carbonized/sulfurized ferrotitanium complex ore anode-electrolytic method for preparing metallic titanium | |
| CN104451758A (en) | Method for preparing titanium carbide by performing molten salt electrolysis on high titanium slags | |
| CN104988335A (en) | Method of preparing metallic aluminium by alumina carbothermal nitridation vacuum thermal decomposition | |
| CN108832078A (en) | A kind of Fe3O4The preparation method of/Fe- coal tar pitch base complex spherical active carbon | |
| CN108774738B (en) | Hydrogen reduction TiO2Combined molten salt electrolysis of Ti4O7Method for preparing metallic titanium | |
| CN104099634B (en) | The preparation method of vanadium nitride | |
| CN109811370A (en) | A kind of electrolysis-titanium carbon sulphur anode-method for preparing Titanium | |
| CN105271142A (en) | Irregularly-rodlike g-C3N4 material and preparation method and application thereof | |
| CN104099478B (en) | A kind of method reclaiming and prepare chromium metal | |
| CN109292757A (en) | A kind of graphene and preparation method thereof | |
| CN102808091B (en) | A kind of preparation method of high purity titanium | |
| CN105525108A (en) | Method for preparing magnesium-calcium alloy through aluminothermic reduction | |
| CN107986279A (en) | A kind of microwave furnace of calcium carbide reactor and prepare the method for calcium carbide using it | |
| CN101812703B (en) | Method for preparing metallic titanium by electrolyzing sodium titanate-sodium hydroxide melt | |
| CN103882247B (en) | Microwave heating refining magnesium technology | |
| CN109913665A (en) | A kind of method that bauxite vacuum distillation prepares metallic aluminium | |
| CN102995065A (en) | Method for preparing metal titanium by taking ionic liquid as electrolyte and performing electro-deoxidization at room temperature | |
| CN109518004B (en) | A kind of method that carbon thermal reduction prepares metallic aluminium | |
| CN105567969A (en) | Magnesium smelting process with microwave carbon method | |
| CN1295151C (en) | Process for producing anhydrous magnesium chloride by microwave energy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181221 |