CN101683998A - One-step production method for cerium poor rare earth fluoride and cerium fluoride - Google Patents
One-step production method for cerium poor rare earth fluoride and cerium fluoride Download PDFInfo
- Publication number
- CN101683998A CN101683998A CN200810046146A CN200810046146A CN101683998A CN 101683998 A CN101683998 A CN 101683998A CN 200810046146 A CN200810046146 A CN 200810046146A CN 200810046146 A CN200810046146 A CN 200810046146A CN 101683998 A CN101683998 A CN 101683998A
- Authority
- CN
- China
- Prior art keywords
- cerium
- fluoride
- rare earth
- production method
- step production
- 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
Images
Landscapes
- Catalysts (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a non-ferrous metal rare-earth separating method, concretely, a one-step production method for cerium poor rare earth fluoride and cerium fluoride, wherein the one-step production method for cerium poor rare earth fluoride and cerium fluoride, comprising the following steps of: A. oxidizing and roasting rare-earth ore concentrate; B. selectively dissolving the rare-earth ore concentrate with dilute hydrochloric acid after oxidizing roasting, and adding a catalyst; C. filtrating and separating the SLAG and the solution after selective dissolution. The method of the invention can implement zero discharge of waste water, reduce the cost, increase product value, decrease process flow, and reduce labor strength.
Description
Technical field
The present invention relates to the non-ferrous metal Rare Earth Separation, be specially few cerium rare earth chloride, cerium fluoride one step production method.
Background technology
At present widely used cerium rare earth chloride working system the steps include: that excellent molten, the filtration of oxidizing roasting, hydrochloric acid, filter residue alkali change, 11～13 washings, filters in the industry; Molten, the filtration of two suboptimums; Molten, the filtration of three suboptimums.There is following problem and shortage in such technology: the ore deposit after the roasting is changeed, washing, is filtered through excellent molten, alkali repeatedly, and technical process is long; Because flow process needs to repeat repeatedly to carry slag repeatedly, labour intensity is big; After changeing, filter residue alkali needs washing, fluorine-containing and alkali in the rinsing solution, and the emission of serious pollution of environment of this waste water, to the cost height of its improvement, difficulty is big; Such technology is low to equipment efficiency of usage; Alkali changes needs 0.28 ton of/ton ore deposit of consumable liquid sodium hydroxide, alkali turns over also needs whole day 24 hours that the temperature in the alkali turn trough is remained on 100～120 degree in the journey, consume a large amount of electric energy and water vapour, the alkali cake after alkali changes also needs a large amount of water and flocculation agent lotion alkali cake, cost height; Directly Pai Fang fluorine is the product of demand on the market on the contrary.
Summary of the invention
The present invention is just at above environmental protection and technical problem, provides a kind of and can realize wastewater zero discharge, reduces cost, increases value of the product, reduces technical process, reduces few cerium rare earth chloride, cerium fluoride one step production method of labour intensity.
Concrete scheme of the present invention is as follows:
Few cerium rare earth chloride, cerium fluoride one step production method may further comprise the steps:
A, rare earth ore concentrate oxidizing roasting;
B, that the rare earth ore concentrate after the oxidizing roasting is carried out dilute hydrochloric acid is excellent molten, and adds catalyzer;
C, excellent slag, solution after molten is carried out filtering separation.
Catalyzer is the salt of sulfuric acid or nitric acid or perchloric acid or hypochlorous acid or potassium permanganate or hydrogen peroxide or other mineral acids or other organic acids or strong acid and strong base generation.
In the excellent molten process of dilute hydrochloric acid, add catalyzer, make cerium participate in reaction, utilize the preferential complex scheme of fluorine, make cerium and fluorion in the liquid state generate cerium fluoride and enter slag, trivalent rare earth enters liquid state, thereby the purity of cerium in the raising solids reduces the content of cerium in the liquid state, and reaching excellent molten, the alkali of conventional multi changes isolating effect.
Positively effect of the present invention shows:
(1) realized fluorine-containing alkaline waste water zero release;
(2) reduce alkali commentaries on classics, washing etc. and repeated operation;
(3) auxiliary material, energy consumption reduce significantly;
(4) manually be reduced to 40% of old technology;
(5) average ore per ton reduces by 1750 yuan of costs than original technology;
(6) technology of the present invention defluorination not, the fluorine discharging reduces by 60～80 kilograms of/ton ore deposits;
(7) plant efficiency can improve 60%;
Description of drawings
Fig. 1 is a schematic flow sheet of the present invention;
Fig. 2 is existing process flow diagram.
Embodiment
The invention will be further described below in conjunction with embodiment.
Specific embodiment 1:
Few cerium rare earth chloride, cerium fluoride one step production method may further comprise the steps:
D, rare earth ore concentrate oxidizing roasting;
E, that the rare earth ore concentrate after the oxidizing roasting is carried out dilute hydrochloric acid is excellent molten, and adds catalyzer;
F, excellent slag, solution after molten is carried out filtering separation.
Described catalyzer is 5% sulfuric acid, and add-on is 0.8% of a hydrochloric acid consumption, and the adding method is to add earlier or add simultaneously, and the content that cerium among the rare figure of the rich lanthanum chlorination of cerium is lacked in excellent molten back is 6～18%, and the content of the cerium in the rich cerium slag is for being not less than 93%.
In the excellent molten process of dilute hydrochloric acid, add catalyzer, make cerium participate in reaction, utilize the preferential complex scheme of fluorine, make cerium and fluorion in the liquid state generate cerium fluoride and enter slag, trivalent rare earth enters liquid state, thereby the purity of cerium in the raising solids reduces the content of cerium in the liquid state, and reaching excellent molten, the alkali of conventional multi changes isolating effect.
Specific embodiment 2:
Few cerium rare earth chloride, cerium fluoride one step production method may further comprise the steps:
G, rare earth ore concentrate oxidizing roasting;
H, that the rare earth ore concentrate after the oxidizing roasting is carried out dilute hydrochloric acid is excellent molten, and adds catalyzer;
I, excellent slag, solution after molten is carried out filtering separation.
Described an acidic catalyst is 8% nitric acid, and add-on is 0.8% of a hydrochloric acid consumption, and the adding method is to add earlier or add simultaneously, and the content that cerium in the cerium lanthanum concentrate rare earth chloride is lacked in excellent molten back is 6～18%, and the content of the cerium in the rich cerium slag is for being not less than 93%.
Claims (2)
1, few cerium rare earth chloride, cerium fluoride one step production method may further comprise the steps:
A, rare earth ore concentrate oxidizing roasting;
B, that the rare earth ore concentrate after the oxidizing roasting is carried out dilute hydrochloric acid is excellent molten, and adds an acidic catalyst;
C, excellent slag, solution after molten is carried out filtering separation.
2, few cerium rare earth chloride according to claim 1, cerium fluoride one step production method, it is characterized in that: described an acidic catalyst is sulfuric acid or nitric acid or perchloric acid or hypochlorous acid or potassium permanganate or hydrogen peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100461464A CN101683998B (en) | 2008-09-24 | 2008-09-24 | One-step production method for cerium poor rare earth fluoride and cerium fluoride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100461464A CN101683998B (en) | 2008-09-24 | 2008-09-24 | One-step production method for cerium poor rare earth fluoride and cerium fluoride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101683998A true CN101683998A (en) | 2010-03-31 |
| CN101683998B CN101683998B (en) | 2012-02-29 |
Family
ID=42047423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100461464A Active CN101683998B (en) | 2008-09-24 | 2008-09-24 | One-step production method for cerium poor rare earth fluoride and cerium fluoride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101683998B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399983A (en) * | 2010-09-10 | 2012-04-04 | 周毅 | Bastnaesite (bastnasite) separation method |
| CN102399982A (en) * | 2010-09-10 | 2012-04-04 | 周毅 | Bastnaesite (bastnasite) separation method based on mixed acid |
| CN103374652A (en) * | 2012-09-29 | 2013-10-30 | 有研稀土新材料股份有限公司 | Method for comprehensively recycling rare earth and fluorine in process of treating bastnaesite |
| CN106916975A (en) * | 2017-03-07 | 2017-07-04 | 四川省冕宁县方兴稀土有限公司 | A kind of method of Extraction of rare earth in thorium waste residue from iron |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2019316882B2 (en) * | 2018-08-10 | 2022-08-11 | Grirem Advanced Materials Co., Ltd. | Process for smelting and separating rare earth concentrate using combination method |
-
2008
- 2008-09-24 CN CN2008100461464A patent/CN101683998B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399983A (en) * | 2010-09-10 | 2012-04-04 | 周毅 | Bastnaesite (bastnasite) separation method |
| CN102399982A (en) * | 2010-09-10 | 2012-04-04 | 周毅 | Bastnaesite (bastnasite) separation method based on mixed acid |
| CN103374652A (en) * | 2012-09-29 | 2013-10-30 | 有研稀土新材料股份有限公司 | Method for comprehensively recycling rare earth and fluorine in process of treating bastnaesite |
| WO2014048385A1 (en) * | 2012-09-29 | 2014-04-03 | 有研稀土新材料股份有限公司 | Method for comprehensively recovering rare earth and fluorine in bastnaesite treatment process |
| CN103374652B (en) * | 2012-09-29 | 2015-04-22 | 有研稀土新材料股份有限公司 | Method for comprehensively recycling rare earth and fluorine in process of treating bastnaesite |
| US9752213B2 (en) | 2012-09-29 | 2017-09-05 | Grirem Advanced Materials Co., Ltd. | Method for comprehensively recovering rare earth elements and fluorine element in a bastnaesite treatment process |
| CN106916975A (en) * | 2017-03-07 | 2017-07-04 | 四川省冕宁县方兴稀土有限公司 | A kind of method of Extraction of rare earth in thorium waste residue from iron |
| CN106916975B (en) * | 2017-03-07 | 2018-08-14 | 四川省冕宁县方兴稀土有限公司 | A method of the Extraction of rare earth from iron thorium waste residue |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101683998B (en) | 2012-02-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100576626C (en) | A kind of process that realizes full cycle regeneration of lead acid battery | |
| CN104831073B (en) | A kind of technique reclaiming platinum, palladium, rhodium from spent auto-catalysts | |
| CN103014350B (en) | Recycling method of zinc hypoxide | |
| CN102286759B (en) | Method for preparing electrodeposited zinc from high-fluorine high-chlorine secondary zinc oxide powder | |
| CN102676853A (en) | Rare earth separation method with material linkage cyclic utilization function | |
| CN110055423B (en) | Method for enriching platinum group metals and rare earth in spent automobile exhaust purification catalyst | |
| CN105779770B (en) | Method for recycling valuable metal in waste circuit board | |
| CN101683998B (en) | One-step production method for cerium poor rare earth fluoride and cerium fluoride | |
| WO2013166781A1 (en) | Method for recovering rare earth from waste rare-earth-containing light-emitting material | |
| CN102453931A (en) | Technology for treating and purifying copper electrolyte by vortex electrolysis | |
| CN110205503B (en) | Method for decomposing bastnaesite | |
| CN103194609A (en) | Method for preparing scandium oxide by using rough scandium extracted from waste acid water of titanium dioxide as raw material | |
| CN103045851A (en) | Technique for decomposing Baotou rare-earth ores | |
| CN101648702A (en) | Method for preparing tellurium dioxide by using crude tellurium as raw material | |
| CN109023433A (en) | A kind of thick electrorefining of silver technique | |
| CN100417475C (en) | Production of metal zinc powder from zinc dust and zinc dross | |
| CN102876903A (en) | Direct acidity oxygen pressure leaching treatment method of crude tin copper removal residues | |
| CN102534666B (en) | Electrochemical double refining purification method for high purity silicon and high purity aluminum | |
| CN104386747B (en) | A kind of ion exchange method prepares the method for high purity barium oxide | |
| CN101503220B (en) | Preparation of rhodium chloride | |
| CN100532656C (en) | Method for recovering copper and nickel nitrate by electrolysis of electroplating waste water | |
| CN103710541A (en) | Wet process for producing electrolytic manganese dioxide | |
| CN202246872U (en) | System for recycling printed board acid etching waste solution and copper | |
| CN103014334B (en) | Method for replacement dissolution of bastnaesite (bastnasite) | |
| CN112941321A (en) | Method for strengthening leaching reaction of neodymium iron boron magnet by combining electrochemical anodic oxidation with ionic flocculant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: LESHAN SHENGHE RARE EARTH CO., LTD. Free format text: FORMER OWNER: EMEISHAN KESHENG RARE EARTH TECHNOLOGY CO., LTD. Effective date: 20110303 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610000 NO.86, JINDING SOUTH ROAD, EMEISHAN CITY, SICHUAN PROVINCE TO: 614803 JINSU TOWN, WUTONG DISTRICT, LESHAN CITY, SICHUAN PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20110303 Address after: 614803 Golden Millet Town, five pass, Sichuan, Leshan Applicant after: LESHAN SHENGHE RARE EARTH Co.,Ltd. Address before: 610000 No. 86 Jinding South Road, Mount Emei, Sichuan Applicant before: EMEISHAN KESHENG RARE EARTH TECHNOLOGY Co.,Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jinsu Town, Wutong District, Leshan City, Sichuan Province 614803 Patentee after: Leshan Shenghe Rare Earth Co.,Ltd. Address before: Jinsu Town, Wutong District, Leshan City, Sichuan Province 614803 Patentee before: LESHAN SHENGHE RARE EARTH Co.,Ltd. |