CN104789773A - Rare-earth liquid impurity removal process - Google Patents
Rare-earth liquid impurity removal process Download PDFInfo
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- CN104789773A CN104789773A CN201510141431.4A CN201510141431A CN104789773A CN 104789773 A CN104789773 A CN 104789773A CN 201510141431 A CN201510141431 A CN 201510141431A CN 104789773 A CN104789773 A CN 104789773A
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- feed liquid
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- impurity removal
- rare
- removal process
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- 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
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Abstract
The invention discloses a rare-earth liquid impurity removal process, and relates to the technical field of rare-earth impurity removal. The rare-earth liquid impurity removal process comprises the following steps: 1, carrying out press-filtering on liquid generated from acid dissolution by using a filter press, and firstly removing suspended solids, sand and gravel granules and the like in the liquid; 2, feeding the liquid into a liquid impurity removal device, adjusting the flow ratio of the liquid to an organic phase, and at the same time controlling the rotation speed of the stirring device and the liquid reaction and retention time; 3, adjusting the flow of washing acid and washing water in the backwash period, and recycling the organic phase after backwash; 4, feeding the liquid subjected to impurity removal into a subsequent extraction tank. After the impurity removal process, the impurities of the rare-earth liquid are greatly reduced, the organic phase in the subsequent tank can be prevented from being emulsified, meanwhile the product quality can be improved, and the extraction separation amount can be increased.
Description
Technical field
What the present invention relates to is rare earth impurity removing technology field, is specifically related to a kind of rare earth feed liquid impurity removal process.
Background technology
The rare-earth mineral that rare earth extraction is separated enterprise procurement is interior containing the higher foreign material such as calcium, iron, aluminium, sulfate radical and silt, gravel particle, slag, dissolving with hydrochloric acid rare-earth mineral is utilized when acid-soluble operation, most of non-rare earth impurity is caused to enter into feed liquid, then follow-up extraction process is entered into, in extraction tank, impurity and extraction agent react and produce emulsification or cause organic phase poisoning, organic phase is lost activity, reduce the extracting power of organic phase and the mobility of cell body feed liquid, affect product production and quality.
Summary of the invention
For the deficiency that prior art exists, the present invention seeks to be to provide a kind of rare earth feed liquid impurity removal process, impurity after this impurity removal process in rare earth feed liquid significantly reduces, and can prevent the organic phase emulsification in follow-up cell body, simultaneously Improving The Quality of Products and extracting and separating amount.To achieve these goals, the present invention realizes by the following technical solutions: a kind of rare earth feed liquid impurity removal process, its processing step is: 1. utilize pressure filter that the feed liquid of acid-soluble generation is carried out press filtration, the suspended substance first in removing feed liquid and silt gravel particle etc.; 2. feed liquid enters feed liquid knot screen, regulates the flow proportional of feed liquid and organic phase, and control whipping appts rotating speed and feed liquid are reacted and the residence time simultaneously; 3. regulate in backwash section and wash acid and wash water flow, the organic phase after backwash recycles; 4. the feed liquid after removal of impurities enters follow-up extraction tank.
As preferably, described pressure filter comprises the N235 removing iron contamination; Remove the naphthenic acid of other non-rare earth impurities.
Beneficial effect of the present invention: this rare earth feed liquid impurity removal process carries out Airtightness removal of impurities, mechanize controls automatically, avoid the while that evaporating, emitting, dripping or leaking of liquid or gas improving operating environment and effectively reduce staff labor intensity, eliminate cell body emulsion, improve follow-up extracting and separating ability and product quality.
Embodiment
The technique means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
This embodiment is by the following technical solutions: a kind of rare earth feed liquid impurity removal process, and its processing step is: 1. utilize pressure filter that the feed liquid of acid-soluble generation is carried out press filtration, first removes suspended substance in feed liquid and silt gravel particle etc.; 2. feed liquid enters feed liquid knot screen, regulates the flow proportional of feed liquid and organic phase, and control whipping appts rotating speed and feed liquid are reacted and the residence time simultaneously; 3. regulate in backwash section and wash acid and wash water flow, the organic phase after backwash recycles; 4. the feed liquid after removal of impurities enters follow-up extraction tank.
This embodiment utilizes pressure filter that the feed liquid of acid-soluble generation is carried out press filtration, first removes suspended substance, silt, gravel particle etc. in feed liquid; Adopt N235 except the iron contamination in feed liquid; Utilize other non-rare earth impurities in naphthenic acid removing feed liquid, the stirring that feed liquid knot screen is supporting and transmission apparatus, and adopt the recycle of removal of impurities organic phase.
This embodiment reduces the content of impurity in extraction tank, eliminates or reduces organic phase emulsion, has saved organic phase and has reduced production cost and working strength, improves the Quality and yield of Working environment and raising product simultaneously.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. a rare earth feed liquid impurity removal process, is characterized in that, its processing step is: (1). utilize pressure filter that the feed liquid of acid-soluble generation is carried out press filtration, the suspended substance first in removing feed liquid and silt gravel particle etc.; (2). feed liquid enters feed liquid knot screen, regulates the flow proportional of feed liquid and organic phase, and control whipping appts rotating speed and feed liquid are reacted and the residence time simultaneously; (3). regulate in backwash section and wash acid and wash water flow, the organic phase after backwash recycles; (4). the feed liquid after removal of impurities enters follow-up extraction tank.
2. a kind of rare earth feed liquid impurity removal process according to claim 1, is characterized in that, described pressure filter comprises the N235 removing iron contamination; Remove the naphthenic acid of other non-rare earth impurities.
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CN201510141431.4A CN104789773A (en) | 2015-03-30 | 2015-03-30 | Rare-earth liquid impurity removal process |
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CN201510141431.4A CN104789773A (en) | 2015-03-30 | 2015-03-30 | Rare-earth liquid impurity removal process |
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Citations (7)
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CN102011020A (en) * | 2009-12-14 | 2011-04-13 | 包头市玺骏稀土有限责任公司 | Method for recovering rare earth elements from neodymium-iron-boron wastes |
CN102312098A (en) * | 2011-09-28 | 2012-01-11 | 武汉理工大学 | Method for separation and purification of fluorescent grade yttrium oxide and europium oxide from waste phosphor powder |
CN102719674A (en) * | 2012-07-13 | 2012-10-10 | 赣县金鹰稀土实业有限公司 | Method for extracting rare earth from oxidized neodymium iron boron waste |
CN103014333A (en) * | 2012-11-27 | 2013-04-03 | 益阳鸿源稀土有限责任公司 | Separation and recovery method of uranium, thorium and rare earth in monazite slag |
US20140356259A1 (en) * | 2013-05-30 | 2014-12-04 | Nano And Advanced Materials Institute Limited | Selective Separation of Rare Earth Metals by Integrated Extraction and Crystallization |
CN104372186A (en) * | 2014-10-28 | 2015-02-25 | 江西稀有金属钨业控股集团有限公司 | Extraction and impurity removal method and system for mixed rare earth liquor |
CN104446427A (en) * | 2014-11-18 | 2015-03-25 | 连云港市兆昱新材料实业有限公司 | Rare-earth doped spinel type ferrite magnetic powder prepared based on NdFeB wastes and preparation method thereof |
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2015
- 2015-03-30 CN CN201510141431.4A patent/CN104789773A/en active Pending
Patent Citations (7)
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CN102011020A (en) * | 2009-12-14 | 2011-04-13 | 包头市玺骏稀土有限责任公司 | Method for recovering rare earth elements from neodymium-iron-boron wastes |
CN102312098A (en) * | 2011-09-28 | 2012-01-11 | 武汉理工大学 | Method for separation and purification of fluorescent grade yttrium oxide and europium oxide from waste phosphor powder |
CN102719674A (en) * | 2012-07-13 | 2012-10-10 | 赣县金鹰稀土实业有限公司 | Method for extracting rare earth from oxidized neodymium iron boron waste |
CN103014333A (en) * | 2012-11-27 | 2013-04-03 | 益阳鸿源稀土有限责任公司 | Separation and recovery method of uranium, thorium and rare earth in monazite slag |
US20140356259A1 (en) * | 2013-05-30 | 2014-12-04 | Nano And Advanced Materials Institute Limited | Selective Separation of Rare Earth Metals by Integrated Extraction and Crystallization |
CN104372186A (en) * | 2014-10-28 | 2015-02-25 | 江西稀有金属钨业控股集团有限公司 | Extraction and impurity removal method and system for mixed rare earth liquor |
CN104446427A (en) * | 2014-11-18 | 2015-03-25 | 连云港市兆昱新材料实业有限公司 | Rare-earth doped spinel type ferrite magnetic powder prepared based on NdFeB wastes and preparation method thereof |
Non-Patent Citations (2)
Title |
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