CN106148710A - A kind of process of recovering rare earth from cerium oxide waste material - Google Patents
A kind of process of recovering rare earth from cerium oxide waste material Download PDFInfo
- Publication number
- CN106148710A CN106148710A CN201610686342.2A CN201610686342A CN106148710A CN 106148710 A CN106148710 A CN 106148710A CN 201610686342 A CN201610686342 A CN 201610686342A CN 106148710 A CN106148710 A CN 106148710A
- Authority
- CN
- China
- Prior art keywords
- rare earth
- leachate
- cerium oxide
- waste material
- oxide waste
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B59/00—Obtaining rare earth metals
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present invention relates to the process of a kind of recovering rare earth from cerium oxide waste material, it is characterized in that: the cerium oxide waste material that REO content is 70 85wt% is crossed 100 mesh sieves and goes to cut weeds, after the solid impurity such as rubble, add the sulfuric acid of theoretical amount 1～1.4 times and no less than the FeSO of theoretical amount 1～1.4 times4, it is heated to leaching 1h 1.5h when 45 DEG C 55 DEG C under being stirred continuously, and carries out separation of solid and liquid, obtain a leachate, a leachate MgO is neutralized secondary separation of solid and liquid after removal of impurities, obtains secondary leachate.Its advantage is: the process simple possible of the present invention, it is easy to large-scale use, and has high rare earth yield, and the rare earth element rate of recovery in secondary leachate is higher than 80%.
Description
Technical field
The present invention relates to the process of a kind of recovering rare earth from cerium oxide waste material, belong to technical field of wet metallurgy.
Background technology
Cerium oxide (CeO2) it is more important light rare earth product, industrially obtain extensively should because having special character
With, and demand increases very fast, has a extensive future.The physicochemical properties of cerium oxide can directly affect the property of its application material
Can, as the addition of fine cerium oxide can reduce the sintering temperature of pottery, it is possible to increase ceramic density, owing to cerium has appraising at the current rate property,
Also having a major impact luminescent material etc., with the extensive application of nanometer technology, research and the application of nano-cerium oxide gradually become
For study hotspot.While cerium oxide industrial production, also can produce a large amount of cerium oxide waste material every year, often be considered at discarded object
Reason, causes the waste of resource, and these cerium oxide waste materials is important secondary rare earth resources, based on above reason, from containing rare earth
Cerium oxide waste material in recovering rare earth, to realize rare earth resources section sustainable utilization, save the energy, protection environment there is important meaning
Justice.But, document report be there is not yet for recovering rare earth from the cerium oxide waste material containing rare earth element.
Content of the invention
It is an object of the invention to provide the process of a kind of recovering rare earth from cerium oxide waste material, the letter of the method technique
Single feasible, it is easy to large-scale use, and there is high rare earth yield.
For realizing the purpose of the present invention, the present invention adopts the following technical scheme that:
The cerium oxide waste material that REO content is 70-85wt% is crossed 100 mesh sieves go to cut weeds, after the solid impurity such as rubble, add reason
The sulfuric acid of opinion consumption 1～1.4 times and the FeSO of theoretical amount 1～1.4 times4, under being stirred continuously, it is heated to leaching when 45 DEG C-55 DEG C
Going out 1h-1.5h, and carrying out separation of solid and liquid, obtain a leachate, a leachate MgO is neutralized secondary solid-liquid after removal of impurities
Separate, obtain secondary leachate.
In described MgO, the pH value with rear secondary leachate is 5.0-5.4；
The optimum amount of described sulfuric acid is 1.4 times of theoretical amount；
The optimum amount of described ferrous sulfate is 1.4 times of theoretical amount；
Using the method for the present invention, on the basis of the volume of secondary leachate, the rare earth element rate of recovery in leachate is higher than
80%。
The invention have the advantage that the method according to the invention for the cerium oxide waste material containing rare earth, sub-with sulfuric acid and sulfuric acid
+ 4 valency ceriums can be reduced to+trivalent cerium by iron, and other rare earth oxides can directly be entered in leachate by sulfuric acid dissolution, then uses
Magnesia neutralizes except making sulfuric acid rare earth after iron, can be incorporated in infusion by this acid solution in actual industrial production, neutralized removes
Enter extraction system after miscellaneous to separate, neutralize slag and return to leach the loss that operation can reduce rare earth；In a word, the present invention
Process simple possible, it is easy to large-scale use, and there is high rare earth yield.
Detailed description of the invention
Embodiment 1
Take 30g cerium oxide waste material (REO 82.03wt%) to cross 100 mesh sieves and go to cut weeds, after the solid impurity such as rubble, add theory
Sulfuric acid that consumption is 1.2 times and the FeSO of theoretical amount 1.2 times4, it is heated to leaching 1.5h when 45 DEG C-55 DEG C under being stirred continuously,
And carry out separation of solid and liquid, and obtaining a leachate, a leachate MgO is neutralized secondary separation of solid and liquid after removal of impurities, obtains
Secondary leachate, the rare earth element rate of recovery in leachate is 83.23%.
Embodiment 2
Take 30g cerium oxide waste material (REO 82.03wt%) to cross 100 mesh sieves and go to cut weeds, after the solid impurity such as rubble, add theory
Sulfuric acid that consumption is 1.3 times and the FeSO of theoretical amount 1.3 times4, it is heated to leaching 1h when 45 DEG C-55 DEG C under being stirred continuously, and
Carrying out separation of solid and liquid, obtaining a leachate, a leachate MgO is neutralized secondary separation of solid and liquid after removal of impurities, obtains two
Secondary leachate, the rare earth element rate of recovery in leachate is 81.58%.
Embodiment 3
Take 30g cerium oxide waste material (REO 82.03wt%) to cross 100 mesh sieves and go to cut weeds, after the solid impurity such as rubble, add theory
Sulfuric acid that consumption is 1.4 times and the FeSO of theoretical amount 1.4 times4, it is heated to leaching 1h when 45 DEG C-55 DEG C under being stirred continuously, and
Carrying out separation of solid and liquid, obtaining a leachate, a leachate MgO is neutralized secondary separation of solid and liquid after removal of impurities, obtains two
Secondary leachate, the rare earth element rate of recovery in leachate is 82.11%.
Embodiment 4
Take 30g cerium oxide waste material REO 82.03wt%) cross 100 mesh sieves and go to cut weeds, after the solid impurity such as rubble, add theory to use
Measure the sulfuric acid of 1.4 times and the FeSO of theoretical amount 1.4 times4, it is heated to leaching 1.5h when 45 DEG C-55 DEG C under being stirred continuously, and
Carrying out separation of solid and liquid, obtaining a leachate, a leachate MgO is neutralized after removal of impurities separation of solid and liquid again, obtains
Secondary leachate, the rare earth element rate of recovery in leachate is 85.37%.
Claims (5)
1. the process of recovering rare earth from cerium oxide waste material, is characterized in that: by the oxidation that REO content is 70-85wt%
Cerium waste material is crossed 100 mesh sieves and is removed after solid impurities, adds the sulfuric acid of theoretical amount 1～1.4 times and theoretical amount 1～1.4 times
FeSO4, it is heated to leaching 1h-1.5h when 45 DEG C-55 DEG C under being stirred continuously, and carries out separation of solid and liquid, obtain a leachate,
Leachate MgO is neutralized secondary separation of solid and liquid after removal of impurities, obtains secondary leachate.
2. the process of recovering rare earth from cerium oxide waste material according to claim 1, is characterized in that: described sulfuric acid
Consumption is 1.4 times of theoretical amount.
3. the process of recovering rare earth from cerium oxide waste material according to claim 1, is characterized in that: described sulfuric acid is sub-
The consumption of iron is 1.4 times of theoretical amount.
4. the process of recovering rare earth from cerium oxide waste material according to claim 1, is characterized in that: in MgO and after
The pH value of secondary leachate is 5.0-5.4.
5. the process of recovering rare earth from cerium oxide waste material according to claim 1, is characterized in that: leach with secondary
On the basis of the volume of liquid, the rare earth element rate of recovery in leachate is higher than 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686342.2A CN106148710A (en) | 2016-08-19 | 2016-08-19 | A kind of process of recovering rare earth from cerium oxide waste material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686342.2A CN106148710A (en) | 2016-08-19 | 2016-08-19 | A kind of process of recovering rare earth from cerium oxide waste material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106148710A true CN106148710A (en) | 2016-11-23 |
Family
ID=57330907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610686342.2A Pending CN106148710A (en) | 2016-08-19 | 2016-08-19 | A kind of process of recovering rare earth from cerium oxide waste material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106148710A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060828A (en) * | 1991-11-25 | 1992-05-06 | 冶金工业部包头稀土研究院 | The preparation method of cerium oxide |
| CN1103668A (en) * | 1993-12-07 | 1995-06-14 | 北京有色金属研究总院 | Method of extracting cerium-rich solution |
| CN104328290A (en) * | 2013-07-22 | 2015-02-04 | 北京有色金属研究总院 | Ionic type rare-earth fine ore acid leaching process |
| CA2878486C (en) * | 2012-11-08 | 2016-02-09 | Electrochem Technologies & Materials Inc. | Process for recovering rare earth oxides from phosphors, fluorescent lamps and light bulbs, cathode ray tubes and other industrial wastes |
-
2016
- 2016-08-19 CN CN201610686342.2A patent/CN106148710A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060828A (en) * | 1991-11-25 | 1992-05-06 | 冶金工业部包头稀土研究院 | The preparation method of cerium oxide |
| CN1103668A (en) * | 1993-12-07 | 1995-06-14 | 北京有色金属研究总院 | Method of extracting cerium-rich solution |
| CA2878486C (en) * | 2012-11-08 | 2016-02-09 | Electrochem Technologies & Materials Inc. | Process for recovering rare earth oxides from phosphors, fluorescent lamps and light bulbs, cathode ray tubes and other industrial wastes |
| CN104328290A (en) * | 2013-07-22 | 2015-02-04 | 北京有色金属研究总院 | Ionic type rare-earth fine ore acid leaching process |
Non-Patent Citations (1)
| Title |
|---|
| 许国华 等: "从氧化铈废料中回收稀土试验研究", 《湿法冶金》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103540756B (en) | A kind of method processing waste and old neodymium iron boron material dissolution rare earth | |
| CN103898330B (en) | The method of the valuable metal such as comprehensive recovery of iron, aluminium, scandium, titanium, vanadium from red mud | |
| CN102154558B (en) | Method for recovering rare earth by segments from neodymium iron boron waste | |
| CN103849775B (en) | A kind of method reclaiming nickel and cobalt from high-temperature alloy waste material | |
| CN104805302B (en) | A kind of method that vanadium and titanium are extracted from titanium slag containing vanadium | |
| CN103820640B (en) | A kind of method of wet underwater welding iron from red soil nickel ore | |
| CN105154683A (en) | Method for separating and recycling valuable metal in tungsten slag | |
| CN102041381A (en) | Method for recovering nickel, cobalt, iron, manganese and magnesium from oxidized nickel ore | |
| CN107502744B (en) | A kind of processing method of high lead barium silver separating residues | |
| CN102766765A (en) | Zinc oxide powder recycling method | |
| CN103045851A (en) | Technique for decomposing Baotou rare-earth ores | |
| CN109666800A (en) | One kind removing cobalt agent and its application | |
| CN106048231A (en) | Method for recovering tantalum, silver, nickel and iron from waste tantalum capacitor | |
| CN103421952A (en) | Synergic extraction agent and method for selectively extracting nickel in acidic nickeliferous solution through synergic extraction agent | |
| CN104388711A (en) | Method for recovering rare earth by leaching rare earth oxide molten slag | |
| CN105567985A (en) | Recovery method of rare earth metal electrolysis fused salt slag | |
| CN102337398B (en) | Technique for extracting and separating rare earth-iron resources from rare earth tailings | |
| CN106745128A (en) | A kind of method of aluminium lime-ash removal of impurities | |
| CN103572064B (en) | Method for enriching lead and recovering rare earth from rare earth lead slag | |
| CN102634668A (en) | Roasting-free evaporation-free method for producing cupric sulfate from zinc hydrometallurgy acid-wash copper dross | |
| CN112877541B (en) | Recycled alloy prepared based on neodymium iron boron oil sludge and preparation method thereof | |
| CN103123840B (en) | A kind of permanent magnetic material with high compressive strength and preparation method thereof | |
| CN105002366A (en) | Method for recycling rear earth from neutralization dregs generated in process of recycling rear earth from neodymium-iron-boron waste material | |
| CN106148710A (en) | A kind of process of recovering rare earth from cerium oxide waste material | |
| CN102703716A (en) | Method for extracting rhenium from rhenium-containing smoke tail gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |