CN1044137C - Treating method for waste slag of smelting magnesium - Google Patents
Treating method for waste slag of smelting magnesium Download PDFInfo
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- CN1044137C CN1044137C CN95107574A CN95107574A CN1044137C CN 1044137 C CN1044137 C CN 1044137C CN 95107574 A CN95107574 A CN 95107574A CN 95107574 A CN95107574 A CN 95107574A CN 1044137 C CN1044137 C CN 1044137C
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- magnesium
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- metal magnesium
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- liquid separation
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Abstract
The present invention discloses a method for recovering magnesium from the waste of smelting metal magnesium and producing primary products of No. 2 fusing agents. In the method, firstly, the waste of the smelting metal magnesium is pulverized, or the large metal magnesium of the waste is sieved; secondly, the sieved waste of the smelting metal magnesium is pulverized, and then is digested by water, so that chlorine salt in waste slag is dissolved in water, and water insoluble matter attached to the magnesium is separated from the magnesium. Solid-liquid separation of digested solutions is carried out; filtered solid matter is sieved to obtain magnesium granules, and obtained liquid is treated through evaporation and concentration to obtain the primary products of the no. 2 fusing agents. By using the present invention, metal magnesium remains in the waste slag can be recovered, the environment pollution can be eliminated, and the waste is changed into valuables.
Description
The present invention relates to a kind of method that from the waste of smelting metal magnesium, reclaims magnesium and regeneration barium fluxing agent.
Hot reducing method production MAGNESIUM METAL, promptly Pidgeon process (Pideon) generally adopts barium fluxing agent (claiming the barium solvent again) as covering and purified flux.According to the reality measuring and calculating, one ton of MAGNESIUM METAL of every production will produce 0.22 ton waste residue.Show by analysis, contain 10～18% MAGNESIUM METAL and about 80% mixing villaumite in this waste residue.The way that prior art is handled waste residue is behind the bulk magnesium grain waste residue to be abandoned picking wherein, and this practice not only causes environmental pollution and public hazards also to waste a large amount of useful villaumites.
The purpose of this invention is to provide a kind of the deficiencies in the prior art that overcome, from the waste of smelting metal magnesium, reclaim the method for the primary products (mixing villaumite) of magnesium and production barium fluxing agent.
Purpose of the present invention realizes by following method: at first the waste of smelting metal magnesium is sieved and pick up, reclaim bulk metal magnesium grain wherein, the waste of smelting metal magnesium that again will be after sieve is picked up is pulverized; Perhaps, directly the waste of smelting metal magnesium is pulverized, water digestion then makes the villaumite in the waste residue soluble in water, and the water-insoluble that is attached on the MAGNESIUM METAL separates with magnesium.Through postdigestive solution through solid-liquid separation, can adopt methods such as filtration, suction filtration, press filtration, sedimentation or centrifugation to carry out solid-liquid separation, isolated solid matter is sieved acquisition crude metal magnesium, isolated liquid is handled through evaporation concentration and heat drying again, can obtain the primary products of barium fluxing agent.
The present invention also can adopt to insert through solid-liquid separation and the remainder that sieves out metal magnesium granule again and add hcl acidifying in the Digestive system; Perhaps, directly, treat that the system reaction stops the back and adds hydrogen peroxide or chlorine, with the iron in the removal system and other impurity through solid-liquid separation and sieve out and add hydrochloric acid in the remainder of metal magnesium granule and carry out acidifying.
Product through obtaining with the present invention can be according to the composite composition that is wherein lacked of its real composition, to obtain barium fluxing agent.
Adopt the both recyclable MAGNESIUM METAL that remains in the waste residue of the present invention, can eliminate environmental pollution again, become evil and be " treasured ".Pick up when the waste that adopts elder generation with smelting metal magnesium sieves, the measure of carrying out aftertreatment behind the recovery bulk metal magnesium grain wherein again can reduce the loss of MAGNESIUM METAL.
Embodiments of the invention below are provided
Embodiment 1
Refining magnesium furnace waste residue 1280 grams, add 2500 milliliters in water after the fragmentation and digest (a large amount of heat releases can be quickened the carrying out that digest in the water-soluble process of digestion), the water-insoluble that is attached in the digestive process on the MAGNESIUM METAL separates with MAGNESIUM METAL, and sinks to liquid bottom with MAGNESIUM METAL.To after carrying out solid-liquid separation, postdigestive liquid obtain crude metal magnesium granules 182 grams through the screening back again.Separating obtained liquid gets white powder villaumite crystallization 770 grams after evaporation concentration and heat drying processing, product analysis result following (weight percentage):
KCl 24.60 MgCl
2 14.16
CaCl
2 9.02 BaCl
2 5.68
NaCl 20.80 water-insolubles 0.11
Embodiment 2
Refining magnesium furnace waste residue 200 grams, broken back (about 2～3 centimetres of particle diameter) adds entry and digests for 0.5 liter.Separate with MAGNESIUM METAL through the water-insoluble of digestion postadhesion on metal magnesium granule.To carry out solid-liquid separation through postdigestive liquid, the solids of gained is through sieving to such an extent that crude metal magnesium grain 14.6 restrains.Will be through solid-liquid separation and the remainder and the merging of postdigestive liquid of sieving out metal magnesium granule, add 0.25 liter of hydrochloric acid (concentration of hydrochloric acid is 30%) again, question response steadily back adds a little hydrogen peroxide (being about 0.1%), with the iron in the removal system and other impurity, and then carry out solid-liquid separation, discard solid part,, carry out concentrate drying and handle to such an extent that white block villaumite 320 restrains the gained clear liquid.The product analysis result is (weight percentage):
KCl 13.48 MgCl
2 40.58
CaCl
2 4.71 BaCl
2 2.10
NaCl 9.23 H
2The O surplus
Embodiment 3
Refining magnesium furnace waste residue 8400 grams, broken back (about 2～3 centimetres of particle diameter) add 19.5 liters of entry and digest (the carrying out that a large amount of heat releases can be quickened to digest in the water-soluble process of digestion).Separate with MAGNESIUM METAL through digestion postadhesion water-insoluble on MAGNESIUM METAL, will carry out solid-liquid separation through postdigestive liquid, the gained solids is through getting crude metal magnesium grain 498 grams after sieving.After separating 11.8 liters of clear, colorless clear liquids, liquid through concentrate, after the drying white powder villaumite 4500 restrains.In isolated filter residue, add 6 liters of (the hydrochloric acid degree of depth is 30%) question responses of hydrochloric acid and steadily add a little hydrogen peroxide (being about 0.1%) in the back, with the iron in the removal system and other impurity, and then carry out solid-liquid separation, and discard solids, with colorless clear liquid, carry out concentrate drying and handle to such an extent that white block villaumite 3800 restrains.Be total to above two steps products therefroms merging to such an extent that mix villaumite 8300 grams, total compositional analysis result is (weight percentage):
KCl 20.87 MgCl
2 26.62
CaCl
2 3.72 BaCl
2 2.10
NaCl 12.60 H
2The O surplus
Suitably allocate according to the products therefrom composition, be placed on again and be warming up to 700 ℃ of dehydration meltings in the plumbago crucible and get No. two solvents 8860 grams.The final analysis result is
MgCl
2 40.58 CaCl
2 3.94
KCl 37.87 NaCl 18.95
BaCl
25.16 water-insoluble (containing MgO) 3.50
Adopt present embodiment can reduce the consumption of hydrochloric acid.
Also available chlorine replaces hydrogen peroxide among the present invention, and the add-on of chlorine is a 8.5mol/ ton flux.
Claims (3)
1, a kind of method that from the waste of smelting metal magnesium, reclaims magnesium and produce the primary products of mixing villaumite flux, at first the waste of smelting metal magnesium is sieved and pick up, reclaim bulk metal magnesium grain wherein, the waste that it is characterized in that again smelting metal magnesium that will be after sieve is picked up is pulverized, water digestion, postdigestive solution carries out solid-liquid separation, and the gained solid matter sieves and obtains crude metal magnesium, gained liquid is carried out evaporation concentration again and handles.
2, method according to claim 1, it is characterized in that and to add in the digestion solution again through solid-liquid separation and the remainder that sieves out metal magnesium granule, in digestion solution, add hcl acidifying then again, after treating that solution reaction stops, in solution, add hydrogen peroxide or chlorine more again, after the solid-liquid separation, again the gained clear liquid is carried out concentrate drying and handle.
3, method according to claim 1, it is characterized in that and will add hcl acidifying through solid-liquid separation and the remainder that sieves out metal magnesium granule, treat that the system reaction stops after, in solution, add hydrogen peroxide or chlorine more again, after the solid-liquid separation, again the gained clear liquid is carried out concentrate drying and handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95107574A CN1044137C (en) | 1995-07-15 | 1995-07-15 | Treating method for waste slag of smelting magnesium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95107574A CN1044137C (en) | 1995-07-15 | 1995-07-15 | Treating method for waste slag of smelting magnesium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1140765A CN1140765A (en) | 1997-01-22 |
| CN1044137C true CN1044137C (en) | 1999-07-14 |
Family
ID=5076389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95107574A Expired - Fee Related CN1044137C (en) | 1995-07-15 | 1995-07-15 | Treating method for waste slag of smelting magnesium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044137C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ305929B6 (en) * | 2007-10-30 | 2016-05-11 | Lm Technologies S. R. O. | Method of obtaining usable raw materials from slag from the production of magnesium alloys and apparatus for making the same |
| CZ304477B6 (en) * | 2011-05-09 | 2014-05-21 | Michal Friml - Posp | Method of obtaining raw materials from slag and apparatus for making the same |
| CN102424916B (en) * | 2011-12-20 | 2015-05-13 | 石嘴山市凯瑞镁化有限公司 | Method for preparing low-sodium carnallite, sodium chloride and magnesium chloride from refined magnesium slag |
| CN103030312B (en) * | 2013-01-10 | 2014-07-30 | 朱广东 | Treatment method of magnesium metal smelting waste slag |
| CN103553109B (en) * | 2013-10-11 | 2015-07-01 | 银川能源学院 | Comprehensive utilization method of magnesium-smelting slag from Pidgeon process |
| 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 |
| CN104032134B (en) * | 2014-06-12 | 2015-12-02 | 东北大学 | A kind of method reclaiming magnesium and refining agent in crude magnesium refining slag |
| 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 |
| CN113233480A (en) * | 2021-06-29 | 2021-08-10 | 郭建文 | Magnesium refining slag recovery equipment and recovery process thereof |
| CN113737006A (en) * | 2021-09-17 | 2021-12-03 | 张伟 | Method for extracting magnesium from refined magnesium waste solid slag |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088268A (en) * | 1993-09-30 | 1994-06-22 | 卢建德 | From the magnesium slag, reclaim the technology of magnesium |
-
1995
- 1995-07-15 CN CN95107574A patent/CN1044137C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088268A (en) * | 1993-09-30 | 1994-06-22 | 卢建德 | From the magnesium slag, reclaim the technology of magnesium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1140765A (en) | 1997-01-22 |
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