CN1482195A - Preparation method of rare-earth polishing powder - Google Patents
Preparation method of rare-earth polishing powder Download PDFInfo
- Publication number
- CN1482195A CN1482195A CNA03130446XA CN03130446A CN1482195A CN 1482195 A CN1482195 A CN 1482195A CN A03130446X A CNA03130446X A CN A03130446XA CN 03130446 A CN03130446 A CN 03130446A CN 1482195 A CN1482195 A CN 1482195A
- Authority
- CN
- China
- Prior art keywords
- rare earth
- polishing powder
- ceo
- preparation
- polishing
- 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.)
- Granted
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Glass Compositions (AREA)
Abstract
The polishing RE powder contains CeO2, La2O3, Pr6O11 and Nd2O3 as main components and Ce content of 75-85 %. Its preparation includes the following steps: dissolving waste polishing RE powder in acid while adding H2O2 in 30 %; regulating pH value with ammonia water to 5-6; adding H2O2 in 30 % and suspension of RE hydroxide at 30-80 deg.c for complete precipitation; water washing, drying and roasting at 300-1200 deg.c for 4 hr to prepare regenerated polishing RE powder with high Ce content. The present invention makes it possible to utilize polishing RE powder fully and can save resource and reduce environmental pollution.
Description
Technical field
The present invention relates to the preparation method of polishing powder from rare earth.
Background technology
Rare earth oxide has purposes widely, and one of important use wherein is the high-efficiency high-quality polishing material as glass.In recent years, only domestic requirement is annual more than 1,500 tons, has produced thus a large amount of useless polishing powder from rare earth.
Polishing powder from rare earth is a kind of mixed light rare-earth oxide, and main component is CeO
2, La
2O
3, Pr
6O
11, Nd
2O
3Etc..The polishing performance of polishing powder and CeO
2Content is closely related.Commercially available polishing powder is pressed CeO
2Content is divided into two big classes, and a class is CeO
2〉=80%, another kind of is CeO
2≤ 50%, the relevant factory of China mostly uses about 50% powder at present, owing to use the back of losing efficacy to abandon as waste material, this had both caused the waste to rare earth resources, had polluted environment simultaneously again.
Have multiple from mixed rare-earth oxide the method for separating cerium, for example Chinese patent CN1047110A discloses " novel method of separating cerium dioxide from mishmetal ", its needs the special ozone generating-device of a cover, is restricted in the application.All similar patents are all to isolate CeO in addition
2Be purpose, remaining rare earth is not utilized.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of polishing powder from rare earth, technological operation of the present invention is simple, and is with low cost, can be CeO in the useless polishing powder
2≤ 50% brings up to CeO
2〉=80%, make useless polishing powder from rare earth obtain farthest utilizing again.Save resource, reduced environmental pollution, its society, remarkable in economical benefits, and obtain high CeO
2The polishing powder from rare earth of content has improved the class of polishing powder, and its polishing performance is good.
The preparation method of polishing powder from rare earth of the present invention, wherein main component contains CeO
2, La
2O
3, Pr
6O
11, Nd
2O
3, described polishing powder from rare earth contains cerium amount 75-85%, and it may further comprise the steps:
1) will give up polishing powder from rare earth at 60-80 ℃, stir lower acid adding to the trivalent rare earth oxide dissolution, not molten CeO
2Solid sinks to the bottom.
2) stirring is lower, adds 30% H
2O
2Make CeO
2Dissolving, it is orange red that solution is.
3) stir lower add ammoniacal liquor, NH
3: H
2O=1: 1, regulate PH=5-6, add 30% H
2O
2, 50-90 ℃ of lower heating 1 hour.
4) light rare earths oxyhydroxide or the Ce (OH) of adding 5-8%
4Suspension, 30-80 ℃, stirred 4-12 hour, make precipitation fully, isolate precipitation, through being washed to neutrality, drying and 300-1200 ℃ of warm roasting 4 hours, through grinding the cerium-rich rare earth oxide compound that sieve series gets 1-10 μ m fine powder, promptly get the regeneration polishing powder from rare earth of high cerium content.When raw material is that useless polishing powder from rare earth (generally contains CeO
245-50%), obtain the regenerated polishing powder from rare earth through processing and contain CeO
2Bring up to 75-85%.
Described acid is hydrochloric acid or rare nitric acid.
Described useless polishing powder from rare earth and H
2O
2Mass/volume be 1: 0.3-0.5.
H2O2 is as oxidant among the present invention, again as reducing agent, and H
2O
2In oxygen, its oxidation number can be-1,0 ,-2, in acid solution, CeO
2Strong oxidizer, H
2O
2Become reducing agent.
The present invention can be CeO in the useless polishing powder
2≤ 50% brings up to CeO
2〉=80%, make useless polishing powder from rare earth obtain farthest utilizing again.Technological operation of the present invention is simple, and the resource of having saved with low cost reduces environmental pollution, its society, remarkable in economical benefits, and obtain high CeO
2The polishing powder from rare earth of content has improved the class of polishing powder, and its polishing performance is good.
Embodiment
Embodiment:
Get levigate useless polishing powder, rare earth consists of CeO
248.12%, La
2O
332.24%, Pr
6O
113.3%, Nd
2O
34.3% 40 grams place beaker, add 4N HNO
3200 milliliters of solution, 80 ℃ of lower half an hour, trivalent rare earth oxide dissolution, CeO of stirring
2Solid sinks to the bottom, and major part is not molten, and pass to solution bottom with pipe this moment, adds gradually 30%H
2O
216ml, CeO
2Dissolving, it is orange red that solution is, and continues to stir adding ammoniacal liquor, (NH again
3: H
2O=1: 1) regulate PH=5.5, be heated to 50 ℃ this moment, 1 hour, in this process, continues to add H
2O
216ml has a large amount of orange-yellow precipitations to produce, and then adds 2 gram Ce (OH)
4Suspension, this mixture is heated to 80 ℃ then, stirs 12 hours, is washed to precipitation neutral and filters, drying obtains hydroxide.950 ℃ of roastings 4 hours get cerium-rich rare earth oxide compound 29.6 grams of 3-9ml through the mill sieve series.Its rare earth consists of CeO
280.05%, La
2O
33.03%, Pr
6O
111.02%, Nd
2O
31.01%.Productive rate is 74%.Recording product must the polishing ability be 60.2 (being worn away amount of glass mg/10min).
Claims (3)
1. the preparation method of a polishing powder from rare earth, wherein main component contains CeO
2, La
2O
3, Pr
6O
11, Nd
2O
3, it is characterized in that described polishing powder from rare earth contains cerium amount 75-85%, it may further comprise the steps:
1) will give up polishing powder from rare earth at 60-80 ℃, stir lower acid adding to the trivalent rare earth oxide dissolution, not molten CeO
2Solid sinks to the bottom;
2) stirring is lower, adds 30% H
2O
2Make CeO
2Dissolving, it is orange red that solution is;
3) stir lower add ammoniacal liquor, NH
3: H
2O=1: 1, regulate PH=5-6, add 30% H
2O
2, 50-90 ℃ of lower heating 1 hour;
4) light rare earth hydroxide or the Ce (OH) of adding 5-8%
4Suspension, 30-80 ℃, stirred 4-12 hour, make precipitation fully, isolate precipitation, through being washed to neutrality, drying and 300-1200 ℃ of warm roasting 4 hours, getting the regeneration polishing powder from rare earth that namely gets high cerium content of 1-10 μ m through the mill sieve series.
2, the preparation method of polishing powder from rare earth according to claim 1 is characterized in that described acid is hydrochloric acid or rare nitric acid.
3, the preparation method of polishing powder from rare earth according to claim 1 is characterized in that described useless polishing powder from rare earth and H
2O
2Mass/volume be 1: 0.3-0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03130446XA CN1194060C (en) | 2003-07-24 | 2003-07-24 | Preparation method of rare-earth polishing powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB03130446XA CN1194060C (en) | 2003-07-24 | 2003-07-24 | Preparation method of rare-earth polishing powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482195A true CN1482195A (en) | 2004-03-17 |
| CN1194060C CN1194060C (en) | 2005-03-23 |
Family
ID=34153752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB03130446XA Expired - Fee Related CN1194060C (en) | 2003-07-24 | 2003-07-24 | Preparation method of rare-earth polishing powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1194060C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899281A (en) * | 2009-05-25 | 2010-12-01 | 甘肃稀土新材料股份有限公司 | Rare earth polishing powder and production method thereof |
| CN101899264A (en) * | 2009-05-25 | 2010-12-01 | 甘肃稀土新材料股份有限公司 | Rare earth polishing powder and preparation method thereof |
| CN102251117A (en) * | 2011-06-17 | 2011-11-23 | 金华冠华水晶有限公司 | Method for extracting rare earth component from crystal waste slag |
| CN102391833A (en) * | 2011-09-08 | 2012-03-28 | 金华冠华水晶有限公司 | Method for recycling and applying discarded rare earth polishing powder into crystal glass |
| CN101280175B (en) * | 2006-04-07 | 2012-07-25 | 清美化学株式会社 | Method for regenerating cerium-based abrasive |
| CN102886308A (en) * | 2012-10-15 | 2013-01-23 | 内蒙古科技大学 | Method for recycling waste rare-earth polishing powder |
| CN103079764A (en) * | 2010-08-03 | 2013-05-01 | Ranco株式会社 | Method for regenerating ceria-based abrasive |
| CN103571336A (en) * | 2012-07-30 | 2014-02-12 | 张艺兵 | Recycling and utilizing method of waste polishing powder |
| CN104371555A (en) * | 2014-10-29 | 2015-02-25 | 安阳方圆研磨材料有限责任公司 | Method for recycling waste rare earth polishing powder and rare earth polishing liquid |
| CN115418168A (en) * | 2022-08-25 | 2022-12-02 | 萍乡泽昊新材料有限责任公司 | Method for separating and extracting rare earth from waste rare earth polishing powder |
-
2003
- 2003-07-24 CN CNB03130446XA patent/CN1194060C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280175B (en) * | 2006-04-07 | 2012-07-25 | 清美化学株式会社 | Method for regenerating cerium-based abrasive |
| CN101899264A (en) * | 2009-05-25 | 2010-12-01 | 甘肃稀土新材料股份有限公司 | Rare earth polishing powder and preparation method thereof |
| CN101899281A (en) * | 2009-05-25 | 2010-12-01 | 甘肃稀土新材料股份有限公司 | Rare earth polishing powder and production method thereof |
| CN103079764A (en) * | 2010-08-03 | 2013-05-01 | Ranco株式会社 | Method for regenerating ceria-based abrasive |
| CN102251117A (en) * | 2011-06-17 | 2011-11-23 | 金华冠华水晶有限公司 | Method for extracting rare earth component from crystal waste slag |
| CN102391833A (en) * | 2011-09-08 | 2012-03-28 | 金华冠华水晶有限公司 | Method for recycling and applying discarded rare earth polishing powder into crystal glass |
| CN103571336A (en) * | 2012-07-30 | 2014-02-12 | 张艺兵 | Recycling and utilizing method of waste polishing powder |
| CN103571336B (en) * | 2012-07-30 | 2015-04-29 | 张艺兵 | Recycling and utilizing method of waste polishing powder |
| CN102886308A (en) * | 2012-10-15 | 2013-01-23 | 内蒙古科技大学 | Method for recycling waste rare-earth polishing powder |
| CN102886308B (en) * | 2012-10-15 | 2013-09-25 | 内蒙古科技大学 | Method for recycling waste rare-earth polishing powder |
| CN104371555A (en) * | 2014-10-29 | 2015-02-25 | 安阳方圆研磨材料有限责任公司 | Method for recycling waste rare earth polishing powder and rare earth polishing liquid |
| CN104371555B (en) * | 2014-10-29 | 2017-11-10 | 安阳方圆研磨材料有限责任公司 | The method and rare earth polishing of useless polishing powder from rare earth reclaiming |
| CN115418168A (en) * | 2022-08-25 | 2022-12-02 | 萍乡泽昊新材料有限责任公司 | Method for separating and extracting rare earth from waste rare earth polishing powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1194060C (en) | 2005-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102312098B (en) | Method for separation and purification of fluorescent grade yttrium oxide and europium oxide from waste phosphor powder | |
| CN106319218A (en) | Method for recovering rare earth, aluminum and silicon from rare earth-containing aluminum and silicon wastes | |
| EP3495518B1 (en) | Production of a scandium-containing concentrate and subsequent extraction of high-purity scandium oxide therefrom | |
| CN1482195A (en) | Preparation method of rare-earth polishing powder | |
| CN1191380C (en) | Method for extracting refined indium from indium tin oxide waste material | |
| CN103011240A (en) | Bulky-grain rare earth carbonate and preparation method and application of carbonate | |
| CN1289699C (en) | Process for preparing cerous hydroxide | |
| CN103663557A (en) | Method for preparing high-purity vanadium pentoxide from coarse vanadium | |
| CN108977675A (en) | A kind of method that anti-charging precipitating-baking inphases prepare low sulfur content rare earth oxide | |
| CN1094380A (en) | The method for preparing carbonated rare earth | |
| CN115558788A (en) | Process method for precipitating uranium products from alkaline uranium solution by reduction method | |
| CN1028769C (en) | Process for cerium oxide | |
| CN113926429A (en) | Hydroxyl modified titanium dioxide composite material, preparation method thereof and application thereof in germanium recovery | |
| CN1021579C (en) | Process for separating cerium dioxicde from mixed rare earth | |
| CN1120589A (en) | Carbonate method for conversion of sulfuric double salt of rareearth and separating cerium | |
| CN1027547C (en) | Emulsion-removing method in the process of extraction | |
| CN105819487A (en) | Preparation method of lanthanum-cerium hydroxides with high oxidation rate | |
| CN1102175C (en) | Recovery method of copper and zinc oxide from waste copper-zinc catalyst | |
| CN1048239A (en) | Produce the processing method of pure cerous hydroxide | |
| CN1331981C (en) | Preparation method of fluorescent grade strontium carbonate | |
| CN1034744C (en) | Method of extracting cerium-rich solution | |
| CN113355511B (en) | Method for selectively reducing vanadium and titanium content in vanadium-titanium magnetite concentrate through ammonium-ammonia oxidation leaching system | |
| CN1365949A (en) | Process for preparing Mn3O4 | |
| CN1053412A (en) | The bicarbonate of ammonia neutralisation is produced zinc oxide | |
| CN1009359B (en) | Production technology of zink oxide from smithosonite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |