CN1122848A - Prepn. of cerium-magnesium alloy by electrolytic eutectoid of chloride - Google Patents
Prepn. of cerium-magnesium alloy by electrolytic eutectoid of chloride Download PDFInfo
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- CN1122848A CN1122848A CN 94113824 CN94113824A CN1122848A CN 1122848 A CN1122848 A CN 1122848A CN 94113824 CN94113824 CN 94113824 CN 94113824 A CN94113824 A CN 94113824A CN 1122848 A CN1122848 A CN 1122848A
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- cerium
- chloride
- magnesium
- magnesium alloy
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Abstract
Additions of cerium chloride and magnesium chloride in the fused salt system of chlorides are controlled, and cerium and magnesium jointly separate out to become Ce-Mg alloy onthe cathode in the process of electrolysis. The technology is simple and convenient in operation, has high recovery rate of metal, and the composition of alloy is easily controlled and its ingredients are uniform. This invention uses cheap magnesium chloride as raw material, and is low in cost.
Description
The present invention relates to producing of a kind of cerium-magnesium alloy, be particularly suitable for electrolysis of chloride eutectrol process and produce cerium-magnesium alloy, belong to rare earth pyrometallurgy technical field.
The cerium-magnesium alloy purposes is extremely extensive.In blast-melted, add cerium-magnesium alloy, can change the mechanical property of cast iron, and processing characteristics is significantly improved.Add cerium-magnesium alloy in steel or non-ferrous metal, can change inclusion morphology in steel or the non-ferrous metal, crystal grain thinning improves its physicals.
In the past, the production method of cerium-magnesium alloy has two kinds:
1. mix-melting method: under the melting of metal state, formulated by a certain percentage metallic cerium and MAGNESIUM METAL.This method metal loss is big, and work situation is poor, and the alloy compositions segregation is serious.
2. melting salt liquid cathode electrolytic process: the metal magnesium ingot is placed electrolyzer, and the metallic cerium that fusing back electrolytic process is separated out enters and forms cerium-magnesium alloy in the magnesium.The raw material that this method is used is the more expensive MAGNESIUM METAL of price, the production cost height, and alloying constituent be difficult to control, have segregation phenomena.
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part, a kind of Cerium II Chloride and cheap magnesium chloride of adopting is provided, electrolysis under muriate melting salt condition is separated out metallic cerium and MAGNESIUM METAL jointly and is prepared the novel process of cerium-magnesium alloy on negative electrode.
The present invention is achieved in that the crystallization Cerium II Chloride under reduced pressure dewatered and makes CeCl
3H
2O and Repone K place plumbago crucible (crucible is originally as anode electrolytic cell) by weight 1: 1.0～1.2 batchings, and the outside is heated to 820～860 ℃ with globars, treats electrolyte melting, puts down the molybdenum bar anode, connects direct current.Utilize the autofeed device, per hour CeCl is controlled in strictness
3H
2O and MgCl
2Add-on, carry out electrolysis continuously.At 840 ℃ of following CeCl
3Decomposition voltage be 2.97 volts, MgCl
2Decomposition voltage be 2.72 volts.Close based on the two decomposition voltage, in the electrolytic process, cerium and magnesium are separated out on negative electrode jointly.Because the Ce-Mg alloy ratio is great in fused electrolyte proportion, liquid Ce-Mg alloy falls into the porcelain dish susceptor, regularly takes out and promptly gets cerium-magnesium alloy.According to the CeCl that adds
3And MgCl
2The ratio difference, can make the cerium-magnesium alloy that contains magnesium 5～15% (or any component).
Provide embodiments of the invention below in conjunction with accompanying drawing:
With Cerium II Chloride and Repone K by weight 1: 1.0～1.2, be mixed with ionogen [5], place plumbago crucible electrolyzer (anode) [4], be heated to 820～860 ℃ with Globar heating element [6], after treating ionogen [5] fusing, put down molybdenum bar anode [2], connect direct supply [3], utilize autofeed device [1], per hour CeCl is controlled in strictness
3And MgCl
2Add-on, carry out electrolysis continuously, Ce and Mg separate out on negative electrode [2] jointly, fall into porcelain dish susceptor [7] immediately, regularly get the Ce-Mg alloy [8] in the susceptor.
Example 1, typical operation data of the present invention are:
Galvanic current 200A
The electrolysis transverse electric is pressed 10～12V
820～860 ℃ of electrolyte temperatures
Cathode current density 5A/cm
2
Anodic current density 0.4A/cm
2
Current efficiency 77%
Ionogen is formed CeCl
3/ KCl=1: 1.0～1.2
Under the aforesaid operations condition, utilize the autofeed device, control per hour adds CeCl
3H
2The O523 gram, MgCl
256 grams, continuous electrolysis took out cerium-magnesium alloy after 3 hours, and analytical results is listed in table 1.Mg content 5.03% in the cerium-magnesium alloy, cerium content 95.20%.
Example 2, operational condition are with example 1, and control per hour adds CeCl
3HO 512 grams, MgCl
278 grams, continuous electrolysis took out cerium-magnesium alloy after 3 hours, and analytical results is listed in table 2.Magnesium 6.98% in the alloy, cerium 93.62%.
Example 3, operational condition are with example 1,2, and control per hour adds CeCl
3The HO496 gram, MgCl
2111 grams, continuous electrolysis took out cerium-magnesium alloy after 3 hours, and analytical results is listed in table 3.Magnesium 10.40% in the alloy, cerium 89.52%.
Example 4, operational condition is the same, and control per hour adds CeCl
3The HO468 gram, MgCl
2166 grams, continuous electrolysis took out cerium-magnesium alloy after 3 hours, and analytical results is listed in table 4.Magnesium 15.93% in the alloy, cerium 85.73%.
The present invention compared with prior art, its advantage is that technology is simple, and is easy to operate, metal recovery Rate height, alloying component are easy to control, and component is even. Because the present invention adopts cheap magnesium chloride to be Raw material, production cost is low, is suitable for township enterprise and medium or small factory production.
Example 1 cerium-magnesium alloy component list 1
| Element | Ce Mg S P Fe Si |
| % by weight | 95.20 5.03 0.02 0.01 ＜0.2 ＜0.05 |
Example 2 cerium-magnesium alloy component lists 2
Example 3 cerium-magnesium alloy component lists 3
Example 4 cerium-magnesium alloy component lists 4
| Element | Ce Mg S P Fe Si |
| % by weight | 93.62 6.98 0.02 0.01 ＜0.2 ＜0.05 |
| Element wt % | Ce Mg S P Fe Si 89.52 10.40 0.02 0.01 ＜0.2 ＜0.05 |
| Element | Ce Mg S P Fe Si |
| % by weight | 85.73 15.39 0.02 0.01 ＜0.2 ＜0.05 |
Claims (1)
- A kind of novel process of producing cerium-magnesium alloy, it is characterized in that Cerium II Chloride and Repone K are prepared burden by weight 1: 1.0～1.2, place plumbago crucible electrolyzer (and being anode), the metal molybdenum bar is a negative electrode, porcelain dish is a susceptor, under 820～860 ℃, pass to direct current, cathode current density is 5A/cm 2, anodic current density is 0.4A/cm 2, per hour control the add-on of Cerium II Chloride and magnesium chloride, on negative electrode, separate out the cerium-magnesium alloy that contains magnesium 5～15% (or any component) jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94113824 CN1122848A (en) | 1994-11-11 | 1994-11-11 | Prepn. of cerium-magnesium alloy by electrolytic eutectoid of chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94113824 CN1122848A (en) | 1994-11-11 | 1994-11-11 | Prepn. of cerium-magnesium alloy by electrolytic eutectoid of chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1122848A true CN1122848A (en) | 1996-05-22 |
Family
ID=5036838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94113824 Pending CN1122848A (en) | 1994-11-11 | 1994-11-11 | Prepn. of cerium-magnesium alloy by electrolytic eutectoid of chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1122848A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443640C (en) * | 2005-12-30 | 2008-12-17 | 重庆大学 | Apparatus and method for adding element during metal smelting process |
| CN100532654C (en) * | 2005-12-28 | 2009-08-26 | 中国科学院长春应用化学研究所 | Process for preparing rare earth-magnesium intermediate alloy by compound cathode molten salt electrolysis |
| CN101457373B (en) * | 2005-12-28 | 2011-09-28 | 中国科学院长春应用化学研究所 | Method for electrolytic preparation of lanthanum rich mixed rare earth-magnesium intermediate alloy by high water-bearing material |
| CN1837412B (en) * | 2005-12-28 | 2012-11-07 | 中国科学院长春应用化学研究所 | Method for preparing yttrium-magnesium intermediate alloy by electrolyzing high-water-content material |
| CN107630233A (en) * | 2017-10-20 | 2018-01-26 | 安吉绿金金属材料有限公司 | A kind of method using rare earth-iron-boron Electrowinning rare earth metal |
| CN111349948A (en) * | 2020-02-27 | 2020-06-30 | 郑州大学 | Electrochemical method for recovering indium-gallium-zinc alloy from indium-gallium-zinc oxide |
-
1994
- 1994-11-11 CN CN 94113824 patent/CN1122848A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100532654C (en) * | 2005-12-28 | 2009-08-26 | 中国科学院长春应用化学研究所 | Process for preparing rare earth-magnesium intermediate alloy by compound cathode molten salt electrolysis |
| CN101457373B (en) * | 2005-12-28 | 2011-09-28 | 中国科学院长春应用化学研究所 | Method for electrolytic preparation of lanthanum rich mixed rare earth-magnesium intermediate alloy by high water-bearing material |
| CN1837412B (en) * | 2005-12-28 | 2012-11-07 | 中国科学院长春应用化学研究所 | Method for preparing yttrium-magnesium intermediate alloy by electrolyzing high-water-content material |
| CN100443640C (en) * | 2005-12-30 | 2008-12-17 | 重庆大学 | Apparatus and method for adding element during metal smelting process |
| CN107630233A (en) * | 2017-10-20 | 2018-01-26 | 安吉绿金金属材料有限公司 | A kind of method using rare earth-iron-boron Electrowinning rare earth metal |
| CN111349948A (en) * | 2020-02-27 | 2020-06-30 | 郑州大学 | Electrochemical method for recovering indium-gallium-zinc alloy from indium-gallium-zinc oxide |
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