CN1088268A - From the magnesium slag, reclaim the technology of magnesium - Google Patents
From the magnesium slag, reclaim the technology of magnesium 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
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- CN
- China
- Prior art keywords
- flux
- magnesium
- technology
- add
- slag
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- 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.)
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Classifications
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- 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
A kind of technology that reclaims MAGNESIUM METAL from the magnesium slag is to add flux I in crucible, and 750～850 ℃ add refining flux II, add reducing flux III during cast, after the demoulding magnesium ingot are carried out anti-oxidation aftertreatment.This technology has been avoided the oxidizing fire of MAGNESIUM METAL in fusion process, reclaims waste material effectively, and the solution environmental pollution of turning waste into wealth has remarkable economical and social benefit.
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 | From the magnesium slag, reclaim the technology of magnesium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93118299A CN1088268A (en) | 1993-09-30 | 1993-09-30 | From the magnesium slag, reclaim the technology of magnesium |
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 | From the magnesium slag, reclaim the technology of magnesium |
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 environment-friendly treatment method of refined 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 |