CN1088268A - Process for recovering magnesium from magnesium slag - Google Patents
Process for recovering magnesium from magnesium slag Download PDFInfo
- Publication number
- CN1088268A CN1088268A CN93118299A CN93118299A CN1088268A CN 1088268 A CN1088268 A CN 1088268A CN 93118299 A CN93118299 A CN 93118299A CN 93118299 A CN93118299 A CN 93118299A CN 1088268 A CN1088268 A CN 1088268A
- Authority
- CN
- China
- Prior art keywords
- flux
- magnesium
- technology
- ingot
- slag
- 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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 37
- 239000011777 magnesium Substances 0.000 title claims abstract description 37
- 239000002893 slag Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title abstract description 8
- 230000004907 flux Effects 0.000 claims abstract description 29
- 230000003064 anti-oxidating effect Effects 0.000 claims abstract description 3
- 238000005516 engineering process Methods 0.000 claims description 14
- 238000007670 refining Methods 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 235000010216 calcium carbonate Nutrition 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- 229910052602 gypsum Inorganic materials 0.000 claims 1
- 239000010440 gypsum Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- ZBQLSHTXSSTFEW-UHFFFAOYSA-N [C+4].[O-2].[Mg+2].[O-2].[O-2] Chemical compound [C+4].[O-2].[Mg+2].[O-2].[O-2] ZBQLSHTXSSTFEW-UHFFFAOYSA-N 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 229940089027 kcl-40 Drugs 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical group [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
A process for recovering magnesium metal from magnesium slag includes adding flux I into crucible, adding refined flux II at 750-850 deg.C, adding reducing flux III during casting, demoulding and anti-oxidizing post-treatment of magnesium ingot. The process avoids the oxidation and combustion of the magnesium metal in the smelting process, effectively recycles the waste materials, changes waste materials into valuable materials, solves the environmental pollution, and has remarkable economic and social benefits.
Description
The present invention relates to the metal waste residue and reclaim technology, particularly from slag, reclaim the technology of MAGNESIUM METAL.
Ordnance factory forms with MAGNESIUM METAL and the cast of other smelting non-ferrous metals when producing other parts of magnesium alloy.Because therefore very easily oxidation of magnesium produces the magnesium slag in fusion process, wherein major part is a magnesium oxide.Reclaiming major part is magnesian magnesium slag, generally adopts the high temperature reduction method, European patent Ep-146-986-A for example, reduction with carbon magnesium oxide under 2000-2300K high temperature.The magnesium slag that 50% left and right sides metallic state magnesium is arranged in the magnesium slag of China ordnance factory.Owing to do not have the suitable method of avoiding the MAGNESIUM METAL oxidation in the magnesium slag removal process, so very low and unmanned recovery of the rate of recovery, make the magnesium slag become waste material and abandon, cause the resource wave not, and cause environmental pollution.
The objective of the invention is to overcome the problem that prior art exists, a kind of technology that reclaims MAGNESIUM METAL from the magnesium slag of avoiding the MAGNESIUM METAL oxidation is provided.
Purpose of the present invention adopts following technology to realize:
In crucible, be sprinkled into solvent I, be warming up to 750～850 ℃ and make it to form the molten bath through preheating (100～200 ℃).The magnesium slag that is preheated to 200 ℃ is dropped in the molten bath in batches.Reinforced on one side, stir on one side, be sprinkled into the flux I on one side, make flux cover the top of the slag, avoid the magnesium burning, treat that the magnesium slag is all after the fusing, carry out refining at 700～800 ℃, add the refining flux II, refining 4～6 minutes, the molten metal calmness is 10～15 minutes after the refining, cools to 650 °～700 ℃, and pouring metal melt is gone into ingot mould, spread the reducing flux III while pouring into a mould on metal bath surface, demolding after cooling is poured out magnesium ingot, and magnesium ingot is carried out anti-oxidation aftertreatment, obtains product regeneration magnesium ingot of the present invention.
Described flux I is by commercially available No. 2 flux MgCl
246～38%, KCl40～32%, NaCl and/or CaCl
25～8%, BaCl
25～8%, MgO 1.5%, adds 3～5%CaF
2Form.
Described refining flux II adds 3～5% light calcium carbonates by above-mentioned flux I and forms.
Described reducing flux III is by 30% sulphur, 30% boric acid and/or terra alba, and No. 40%2 flux is formed.
The aftertreatment technology of described magnesium ingot is:
Cooled magnesium ingot is placed on soaked in the rust-preventive agent solution 20～50 seconds, obtain the surface after the taking-up and be glittering magnesium ingot, this surface long-term storage can be not oxidized.The prescription of this solution is: 0.25%HNO
3, 0.25%NaCl, 0.5%K
2Cr
2O
7, excess water.
Prove through test of many times,, avoided the oxidizing fire of MAGNESIUM METAL, the rate of recovery of MAGNESIUM METAL is reached about 40%, rationally reclaimed the regenerated metal resource, solved the environmental pollution that waste residue causes owing to adopted three kinds of flux in the smelting process.
Now further specify the present invention in conjunction with the embodiments:
Embodiment 1
The magnesium slag (includes 90%Mg+MgO, 8～9%Al, 0.8%Zn, 0.1%Si) 17 kilograms is raw material, adds the flux I through 150 ℃ of preheatings in crucible, is warming up to 800 ℃ and makes it to form the molten bath, the magnesium slag that is preheated to 200 ℃ is put into the molten bath in batches, on one side reinforced, stir on one side, be sprinkled into the flux I on one side, make flux cover the top of the slag, avoid the magnesium burning, treat that the magnesium slag is all after the fusing, be warmed up to 750 ℃ and carry out refining, add the refining flux II, refining 5 minutes, molten metal is calm 12 minutes after the refining, cool to 680 ℃, pour metal into ingot mould, spread the reducing flux III while pouring into a mould on metal bath surface, demolding after cooling, obtain 7 kilograms of product magnesium rods, the rate of recovery 41.12%
Cooled magnesium ingot is placed on 0.25%HNO
3, 0.25%NaCl, 0.5%K
2Cr
2O
7And soak in 40 seconds in the solution of excess water, obtain the magnesium ingot on glittering surface after the taking-up.
Technology of the present invention has been avoided the oxidizing fire of MAGNESIUM METAL in fusion process, reclaims waste material effectively, turns waste into wealth, and solves environmental pollution, and remarkable economical and social benefit are arranged.
Claims (6)
1, a kind of technology that from the magnesium slag, reclaims MAGNESIUM METAL, the invention is characterized in: in crucible, add the flux I, be warming up to 750～850 ℃, form the molten bath, add the magnesium slag in batches and go into the molten bath, and be sprinkled into the flux I, add the refining flux II at 700～800 ℃ and carried out refining 5 minutes, calm 10～15 minutes, cool to 650 °～700 ℃ and be poured into ingot mould, spread the reducing flux III while pouring into a mould, after the demoulding magnesium ingot is carried out anti-oxidation aftertreatment.
2, technology according to claim 1 is characterized in that: described flux I is to add 3～5%CaF by commercially available No. 2 flux
2Form.
3, technology according to claim 1 is characterized in that: described flux II adds 3～5% light calcium carbonates by the flux I and forms.
4, technology according to claim 1 is characterized in that: described reducing flux III is by 30% sulphur, 30% boric acid and/or gypsum, No. 40%2 flux compositions.
5, technology according to claim 1 is characterized in that described magnesium ingot aftertreatment technology is magnesium ingot to be placed on soaked in the rust-preventive agent solvent 20～50 seconds.
6,, it is characterized in that described rust-preventive agent solvent is by 0.25%HNO according to the technology of claim 1 or 5
3, 0.25%NaCl, 0.5%K
2CrO
7And the excess water composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93118299A CN1088268A (en) | 1993-09-30 | 1993-09-30 | Process for recovering magnesium from magnesium slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93118299A CN1088268A (en) | 1993-09-30 | 1993-09-30 | Process for recovering magnesium from magnesium slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1088268A true CN1088268A (en) | 1994-06-22 |
Family
ID=4992407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93118299A Pending CN1088268A (en) | 1993-09-30 | 1993-09-30 | Process for recovering magnesium from magnesium slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1088268A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044137C (en) * | 1995-07-15 | 1999-07-14 | 兰州大学 | Treating method for waste slag of smelting magnesium |
| WO2003035917A3 (en) * | 2001-10-24 | 2003-07-17 | Gabor Vallo | Method for processing magnesium containing scrap by melting in a vacuum furnace |
| CN103540750A (en) * | 2013-10-12 | 2014-01-29 | 青海三工镁业有限公司 | Method and device for constant-temperature dynamic recovery on waste produced by magnesium and magnesium alloy processing |
| CN104032135A (en) * | 2014-06-23 | 2014-09-10 | 河北工业大学 | Method for recycling waste foamed magnesium |
| CN104131310A (en) * | 2014-08-18 | 2014-11-05 | 攀钢集团攀枝花钢铁研究院有限公司 | Comprehensive utilization method of magnesium electrolysis residues |
| CN104152706A (en) * | 2014-08-11 | 2014-11-19 | 西安建筑科技大学 | Method for producing high-purity light magnesium oxide by using magnesium slag produced in metallic magnesium smelting |
| CN105671320A (en) * | 2016-03-30 | 2016-06-15 | 河北工业大学 | Recycling method of foamed magnesium |
| WO2016131174A1 (en) * | 2015-02-16 | 2016-08-25 | 谭何易 | Production line for producing national-standard magnesium alloy ingots on the basis of magnesium alloy waste material |
| CN107075611A (en) * | 2014-04-14 | 2017-08-18 | 湖南斯瑞摩科技有限公司 | A kind of environment-friendly treatment method of refined magnesium slag |
-
1993
- 1993-09-30 CN CN93118299A patent/CN1088268A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044137C (en) * | 1995-07-15 | 1999-07-14 | 兰州大学 | Treating method for waste slag of smelting magnesium |
| WO2003035917A3 (en) * | 2001-10-24 | 2003-07-17 | Gabor Vallo | Method for processing magnesium containing scrap by melting in a vacuum furnace |
| CN103540750A (en) * | 2013-10-12 | 2014-01-29 | 青海三工镁业有限公司 | Method and device for constant-temperature dynamic recovery on waste produced by magnesium and magnesium alloy processing |
| CN107075611A (en) * | 2014-04-14 | 2017-08-18 | 湖南斯瑞摩科技有限公司 | A kind of environment-friendly treatment method of refined magnesium slag |
| CN107075611B (en) * | 2014-04-14 | 2019-01-04 | 湖南斯瑞摩科技有限公司 | A kind of environmental protection treatment method of refining magnesium slag |
| CN104032135A (en) * | 2014-06-23 | 2014-09-10 | 河北工业大学 | Method for recycling waste foamed magnesium |
| CN104152706A (en) * | 2014-08-11 | 2014-11-19 | 西安建筑科技大学 | Method for producing high-purity light magnesium oxide by using magnesium slag produced in metallic magnesium smelting |
| CN104131310A (en) * | 2014-08-18 | 2014-11-05 | 攀钢集团攀枝花钢铁研究院有限公司 | Comprehensive utilization method of magnesium electrolysis residues |
| WO2016131174A1 (en) * | 2015-02-16 | 2016-08-25 | 谭何易 | Production line for producing national-standard magnesium alloy ingots on the basis of magnesium alloy waste material |
| CN105671320A (en) * | 2016-03-30 | 2016-06-15 | 河北工业大学 | Recycling method of foamed magnesium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |