CN86100671A - Use the Ammonium bicarbonate food grade precipitating rare earth - Google Patents
Use the Ammonium bicarbonate food grade precipitating rare earth Download PDFInfo
- Publication number
- CN86100671A CN86100671A CN86100671.2A CN86100671A CN86100671A CN 86100671 A CN86100671 A CN 86100671A CN 86100671 A CN86100671 A CN 86100671A CN 86100671 A CN86100671 A CN 86100671A
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- CN
- China
- Prior art keywords
- feed liquid
- rare earth
- precipitation
- ammonium bicarbonate
- rare
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/247—Carbonates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides with Ammonium bicarbonate food grade and make precipitation agent precipitates and isolates rare earth compound from rare earth feed liquid method, the rare-earth precipitation that is suitable for the rare earth feed liquid that obtains through different approaches separates.Its precipitation process process is mainly divided pre-treatment and two stages of precipitation.Utilize the present invention can reduce the Rare Earth Production cost greatly, and to human body toxicological harmless, non-environmental-pollution, deposition rate more than 95%, the purity of rare-earth products is more than 92%.
Description
The present invention makes precipitation agent precipitates and isolates rare earth compound from rare earth feed liquid method with bicarbonate of ammonia.
The precipitation agent that precipitates and isolates at present rare earth from rare earth feed liquid has two classes usually, be solubility oxyhydroxide and oxalic acid and salt thereof, but the former sedimentation effect is not as the latter, in fact seldom use, thereby industrial use main is oxalic acid precipitation agent (referring to, Chinese rare earth association " rare earth " magazine the 3rd phase of nineteen eighty-three).Make precipitation agent with oxalic acid, the purity of rare-earth products can access satisfied conclusion, yet but exists following deficiency: (1) price is more expensive, the production cost height; (2) poisonous, environmental pollution is big; (3) sedimentation time at normal temperatures long (generally more than 12 hours) is when precipitation heavy rare earths is main feed liquid and lesser temps (below 8 ℃), and sedimentation speed is slower, and the impurity co-precipitation is many; (4) rare-earth oxalate (especially heavy rare earths oxalate) in water particularly in ammonium oxalate solution solubleness big, the loss of rare earth is many.
Purpose of the present invention just is to provide a kind of nontoxic inexpensive, precipitation agent that sedimentation effect is good, precipitates and isolates rare earth compound from rare earth feed liquid.
Making precipitation agent with bicarbonate of ammonia can achieve the above object, the process of precipitation process is: at first the rare earth feed liquid that obtains through different approaches is carried out neutralizing treatment, make feed liquid PH=4.8-5.1 and add a small amount of (for feed liquid weight 0.001～0.003%) iron(ic) chloride (concentration 14～16%) or Tai-Ace S 150 (concentration 18～20%).Reaction adds 3～5% ammonium bicarbonate soln again to half an hour a quarter, to feed liquid PH=5.2～5.5, makes partial impurities produce precipitation in advance, and this is the pre-treatment of feed liquid.Secondly add 5～10% ammonium bicarbonate soln in the feed liquid after removing precipitated impurities than the amount of (weight ratio of contained rare earth/bicarbonate of ammonia in the feed liquid) 1/3～4 by precipitation, and add the polyacrylamide flocculation agent of (about 1～2 gram of feed liquid per ton) on a small quantity, precipitate 1～2 hour.
Compare with existing rare-earth precipitation agent oxalic acid, ammonium bicarbonate precipitation has following characteristics:
(1) the precipitate and separate cost is low.Only to produce the precipitation agent consumption of one ton of rare earth oxide product, oxalic acid is 2.0～2.5 tons (2.5 thousand yuan per ton), and bicarbonate of ammonia is 4.0～4.5 tons (200 yuan per ton), promptly produces rare earth oxide product per ton and can reduce cost 4000～5000 yuan.
(2) non-environmental-pollution is nontoxic to human body.Bicarbonate of ammonia is the agriculture nitrogen fertilizer of using always.
(3) shortened the production cycle, made precipitation agent with oxalic acid, general sedimentation time is all more than 12 hours, and sedimentation time of the present invention only needs 1～2 hour.
(4) deposition rate of rare earth (particularly heavy rare earths) is higher than the oxalic acid precipitation agent.
Adopt the present invention, the deposition rate of rare earth can reach more than 95%, and the purity of rare earth oxide is compared production cost and can be reduced more than 20% more than 92% with oxalate precipitation method.Because it is easy than oxalate precipitation method that mother liquor reclaims, the total recovery that recycles rare earth reaches more than 85%, in addition if be used for doing the processing of the rare earth feed liquid of eluent with ammonium sulfate, because of containing a large amount of ammonium ions of not participating in reaction in the mother liquor, remake eluent after the mother liquor acidifying, rare earth oxide per ton can reduce 3～3.5 tons of ammonium sulfate consumptions (400 yuan per ton), then can further reduce production costs.
Inventive embodiment
To the precipitate and separate of ion type rareearth ore through the rare earth feed liquid of the full drip washing of ammonium sulfate, its treating processes as previously mentioned, following table is the main technical data that two test feed liquids are handled.
Claims (6)
1, precipitate and isolate rare earth compound with precipitation agent from rare earth feed liquid, it is characterized in that, as precipitation agent, the precipitation process process mainly comprises pre-treatment, two stages of precipitation with bicarbonate of ammonia.
2, according to the described feed liquid pretreatment stage of claim 1, feed liquid is carried out neutralizing treatment.Make PH=4.8～5.1.
3,, in rare earth feed liquid, add a small amount of (for feed liquid weight 100,000/) concentration and be 18～20% iron(ic) chloride or concentration and be 14～16% Tai-Ace S 150, reaction a quarter to three according to the described feed liquid pretreatment stage of claim 1.
4, according to the described feed liquid pretreatment stage of claim 1, in feed liquid, add 3～5% ammonium bicarbonate soln, make feed liquid PH=5.2～5.5.
5, precipitate phase according to claim 1, the amount of pressing precipitation ratio 1: 3～4 in rare earth feed liquid adds 5～10% ammonium bicarbonate soln.
6, precipitate phase according to claim 1 adds 1～2 amount that restrains by feed liquid per ton, adds polyacrylamide in rare earth feed liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100671A CN1008082B (en) | 1986-01-25 | 1986-01-25 | Precipitating rare-earth by using ammonium bicarbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100671A CN1008082B (en) | 1986-01-25 | 1986-01-25 | Precipitating rare-earth by using ammonium bicarbonate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86100671A true CN86100671A (en) | 1987-08-05 |
| CN1008082B CN1008082B (en) | 1990-05-23 |
Family
ID=4801150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86100671A Expired CN1008082B (en) | 1986-01-25 | 1986-01-25 | Precipitating rare-earth by using ammonium bicarbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008082B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042146C (en) * | 1994-03-18 | 1999-02-17 | 冶金工业部长沙矿冶研究院 | Preparation method of crystal form rare earth carbonate |
| CN1054356C (en) * | 1995-07-05 | 2000-07-12 | 南昌大学 | Method for crystallizing and sedimenting rare-earth carbonate |
| CN100393623C (en) * | 2006-07-27 | 2008-06-11 | 江阴加华新材料资源有限公司 | Large particle rare-earth oxide and its preparing method |
| CN101037219B (en) * | 2007-04-28 | 2010-06-02 | 包头华美稀土高科有限公司 | Production process of magnesia used for rear earth solution precipitator |
| CN101200304B (en) * | 2007-09-19 | 2010-07-21 | 王洪志 | Technique for producing 99% praseodymium-neodymium oxides by using Nd-Fe-B smelting slag |
| CN102757080A (en) * | 2012-07-19 | 2012-10-31 | 山东齐鲁华信高科有限公司 | Rare earth recovery method of sodium bicarbonate in production of rare-earth Y-type molecular sieve |
| CN110184460A (en) * | 2019-06-28 | 2019-08-30 | 四川省乐山锐丰冶金有限公司 | Aluminum ions method is removed in a kind of praseodymium chloride neodymium feed liquid |
| CN115010165A (en) * | 2022-05-20 | 2022-09-06 | 全南县新资源稀土有限责任公司 | Preparation method of rare earth carbonate and preparation method of rare earth oxide |
| US11447397B1 (en) | 2021-03-19 | 2022-09-20 | Lynas Rare Earths Limited | Materials, methods and techniques for generating rare earth carbonates |
-
1986
- 1986-01-25 CN CN86100671A patent/CN1008082B/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042146C (en) * | 1994-03-18 | 1999-02-17 | 冶金工业部长沙矿冶研究院 | Preparation method of crystal form rare earth carbonate |
| CN1054356C (en) * | 1995-07-05 | 2000-07-12 | 南昌大学 | Method for crystallizing and sedimenting rare-earth carbonate |
| CN100393623C (en) * | 2006-07-27 | 2008-06-11 | 江阴加华新材料资源有限公司 | Large particle rare-earth oxide and its preparing method |
| CN101037219B (en) * | 2007-04-28 | 2010-06-02 | 包头华美稀土高科有限公司 | Production process of magnesia used for rear earth solution precipitator |
| CN101200304B (en) * | 2007-09-19 | 2010-07-21 | 王洪志 | Technique for producing 99% praseodymium-neodymium oxides by using Nd-Fe-B smelting slag |
| CN102757080A (en) * | 2012-07-19 | 2012-10-31 | 山东齐鲁华信高科有限公司 | Rare earth recovery method of sodium bicarbonate in production of rare-earth Y-type molecular sieve |
| CN110184460A (en) * | 2019-06-28 | 2019-08-30 | 四川省乐山锐丰冶金有限公司 | Aluminum ions method is removed in a kind of praseodymium chloride neodymium feed liquid |
| US11447397B1 (en) | 2021-03-19 | 2022-09-20 | Lynas Rare Earths Limited | Materials, methods and techniques for generating rare earth carbonates |
| US12098080B2 (en) | 2021-03-19 | 2024-09-24 | Lynas Rare Earths Limited | Materials, methods and techniques for generating rare earth carbonates |
| CN115010165A (en) * | 2022-05-20 | 2022-09-06 | 全南县新资源稀土有限责任公司 | Preparation method of rare earth carbonate and preparation method of rare earth oxide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1008082B (en) | 1990-05-23 |
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