CN102173491B - Process for comprehensively utilizing rare-earth ore leaching waste liquid and calcining waste heat in rare earth production - Google Patents
Process for comprehensively utilizing rare-earth ore leaching waste liquid and calcining waste heat in rare earth production Download PDFInfo
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- CN102173491B CN102173491B CN2011100660474A CN201110066047A CN102173491B CN 102173491 B CN102173491 B CN 102173491B CN 2011100660474 A CN2011100660474 A CN 2011100660474A CN 201110066047 A CN201110066047 A CN 201110066047A CN 102173491 B CN102173491 B CN 102173491B
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 50
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 47
- 239000002918 waste heat Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001354 calcination Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000002699 waste material Substances 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 title claims abstract description 7
- 238000002386 leaching Methods 0.000 title abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 26
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011575 calcium Substances 0.000 claims abstract description 18
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 18
- 239000002253 acid Substances 0.000 claims abstract description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 14
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 14
- 239000004571 lime Substances 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 239000002351 wastewater Substances 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- DKFCNIGGENJIJN-UHFFFAOYSA-L aluminum;iron(2+);sulfate Chemical compound [Al+3].[Fe+2].[O-]S([O-])(=O)=O DKFCNIGGENJIJN-UHFFFAOYSA-L 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 11
- 239000011707 mineral Substances 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 10
- 239000011593 sulfur Substances 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- -1 rare earth oxalate Chemical class 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 150000004965 peroxy acids Chemical class 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 abstract description 4
- 229910000360 iron(III) sulfate Inorganic materials 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract 4
- 239000000779 smoke Substances 0.000 abstract 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005189 flocculation Methods 0.000 description 5
- 230000016615 flocculation Effects 0.000 description 5
- 235000010755 mineral Nutrition 0.000 description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 238000005202 decontamination Methods 0.000 description 3
- 230000003588 decontaminative effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- WAKTWVHWRCNIKU-UHFFFAOYSA-N S(=O)(=O)(O)O.[AlH3] Chemical compound S(=O)(=O)(O)O.[AlH3] WAKTWVHWRCNIKU-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a process for comprehensively utilizing rare-earth ore leaching waste liquid and calcining waste heat in rare earth production, which comprises the following steps of: treating the waste water discharged after dissolving rare-earth ores by acid by using lime, to form residue containing a large amount of calcium, iron and aluminum salts; and adding sulfuric acid with a mass percentage concentration of above 70 percent into the residue for curing to prepare an aluminum sulfate molten iron finishing agent containing calcium sulfate, wherein curing is realized by comprehensively utilizing the waste heat generated by rare earth calcination and smoke chamber waste heat of a boiler. By adopting the invention, the problem of higher cost of synthesizing the conventional inorganic polymeric flocculant aluminum ferric sulfate is solved, and the problems of large amount of residue generated by waste treatment, difficulty in treatment of the residue, low temperatures of calcining waste heat and boiler smoke chamber waste heat discharged during the rare earth production, and difficulty in comprehensive utilization in the traditional rare earth smelting process are solved; the aluminum ferric sulfate containing the calcium sulfate, with high economic benefit, is prepared on the basis of the original process, and the aluminum ferric sulfate can be used as the finishing agent in the subsequent sewage treatment; and the preparation process is simple, the economic benefit is obvious, and the process is easy to popularize.
Description
Technical field
The present invention relates to the comprehensive utilization process that a kind of rare-earth mineral leaches waste liquid and Rare Earth Production calcining waste heat.
Technical background
The aluminium iron sulfate over-all properties is superior to bodied ferric sulfate (PFS) and polyaluminium sulfate (PAS); Have that molysite flocculation agent settling velocity is fast, alumen ustum is big, the good advantage of aluminium based flocculating agent fading effect; Characteristic and characteristics with Poly aluminum Chloride (PAC) (PAC) and molysite have overcome the water purification difficult point of PAC when low-temperature and low turbidity.Therefore, its purifying water effect obviously is superior to general water purification product.
The method for preparing aluminium iron sulfate commonly used at present: with ferrous sulfate, H
2SO
4, Al (OH)
3Deng being raw material, at oxygenant H
2O
2There is synthesized polymer aluminium iron sulfate (PAFS) down.The shortcoming of this method is to need accurate technology controlling and process, brings certain difficulty to operation, and oxygenant H
2O
2Relatively more expensive, so preparation cost is higher.
Domestic also have the flyash that utilizes heat power plant discharging and a calcined pyrite in chemical plant; Synthesized polymer aluminium iron sulfate (PAFS) flocculation agent under higher temperature; The raw material that this method adopts all is a plant wastes; So have favorable economic benefit and environmental benefit, but the weak point of this method is Fe in the raw material
2+Content is higher, often need add oxygenant again (like MmO
2), and technology is loaded down with trivial details, and generated time is longer, relatively is unfavorable for suitability for industrialized production.
Rare earth is in the calcination process, and the moisture that the section that heats up can be contained with the rare-earth precipitation thing is dried, but also has the not comprehensive utilization of a large amount of waste heats, has caused the waste of the energy.There is a large amount of iron aluminium elements in rare earth roasted ore leach liquor after extracting rare earth in addition, after lime precipitation, forms and contains a large amount of calcium, the residue of iron aluminium salt.When adopting lime treatment merely, settling velocity is slow, and sewage treatment capacity is low, if auxiliary conventional flocculation agent (like Poly aluminum Chloride (PAC)), not only cost is higher, and treatment effect is not so good.In the lime precipitation process, because the level of residue that produces is big, residue is difficult to handle, and therefore causes bigger environmental protection pressure to WWT.The method of at present handling residue is transported to elswhere again and carries out landfill usually with its squeezing, and this method not only processing cost is high, and the calcium that produces, iron aluminium salt etc. are difficult to economic utilization.
Summary of the invention
To above problem; The purpose of this invention is to provide the comprehensive utilization process that a kind of rare-earth mineral leaches waste liquid and Rare Earth Production calcining waste heat; Can on the basis of original technology, prepare the aluminium iron sulfate of the high sulfur acid calcium of economic benefit, and can be used as the processing medicament of postorder WWT, the preparation process is simple; Economic benefit is obvious, is easy to promote.
In order to reach above-mentioned purpose, solution of the present invention is:
The waste water that to after peracid dissolves rare-earth mineral, discharge is used lime treatment; What form contains a large amount of calcium, iron aluminium salt residue; In residue, add the aluminium iron sulfate water conditioner that sulfur acid calcium is processed in mass percentage concentration 70% above sulfuric acid slaking, slaking is the waste heat of comprehensive utilization rare earth calcining generation and the smoke-box waste heat of boiler.
Said acid dissolving rare-earth mineral is: dissolving with hydrochloric acid is used with carbonated rare earth or rare earth oxalate fine fodder in (1), is used to extract pure rare earth, and extraction back waste water also contains a large amount of Cl except containing a large amount of aluminium, ferro element
-, Cl
-Can be used as postorder and prepare the catalyzer of aluminium iron sulfate; (2) behind calcining such as sulfuric acid or the ammonia chloride rare earth ore concentrate, leach liquor also has a large amount of ferro-aluminum elements except containing rare earth, is settled out behind the rare earth fine fodder remaining a large amount of ferro-aluminum elements in the solution.General these ferro-aluminum elements of lime precipitation that use form waste residue in the factory.
Said sour slaking is that the residue that produces after the lime precipitation is mixed with the sulfuric acid of mass percentage concentration more than 70%; Mol ratio is at 2:3～2:3.5; Be controlled in the stockpile temperature and carry out slaking under 80-150 degree centigrade and stack; Utilize the waste heat that produces in rare earth calcining or the boiler flue to come controlled temperature, become the aluminium iron sulfate that promptly is converted into water conditioner----sulfur acid calcium after yellowish to the stockpile color.As using (2) residue, need add a small amount of Cl in addition
-
Described water conditioner is the aluminium iron sulfate of sulfur acid calcium, can be used as the flocculation agent in the water treatment procedure.
After adopting such scheme, key features of the present invention is that the sediment and the Rare Earth Production waste heat of Rare Earth Production waste water carries out composite governance, and by-product goes out the aluminium iron sulfate water conditioner.The present invention not only can solve the synthetic cost problem of higher of present conventional inorganic polymer flocculant aluminium iron sulfate; And can solve in the rare-earth smelting technology problem that calcining waste heat and the boiler smoke-box waste heat supply temperature that the level of residue that wastewater treatment produces is big, residue is difficult to handle, discharge during Rare Earth Production be low, be difficult to fully utilize.On the basis of original technology, prepare the aluminium iron sulfate of the high sulfur acid calcium of economic benefit, and can be used as the processing medicament of postorder WWT, the preparation process is simple, and economic benefit is obvious, is easy to promote.
Embodiment
Get 200Kg through the residue that contains a large amount of calcium, alite after the lime precipitation; Drop into mass percentage concentration 70% sulfuric acid (industrial waste acid) through cement mixer, stir discharging, be controlled in the stockpile temperature and carry out the slaking stacking under 80-150 degree centigrade (the waste heat controlled temperature that produces when utilizing calcination); Experiment is found; When the stockpile temperature reached 70 degrees centigrade, the color of residue and sulfuric acid mixture began to become redness of the skin or complexion, when temperature continues to raise; Color gradates again and is grey black, is generally the color of stirrer discharging this moment.Stockpile is placed in the boiler flue decontamination chamber; Under about 120-150 degree centigrade, residue and vitriolic color are converted into light yellow (this is the aluminium iron sulfate of sulfur acid calcium), are incubated discharging in 6 hours; Be higher than the problem that occurred material " burning to death " in 12 hours, water-soluble decline.
When flue decontamination chamber temperature control bad when mixing with stack gas that afterwards temperature is too high (be blower fan introduce freezing air), the people's that can occur choking taste, assay products is a sulfuric acid mist.This situation generally appears at flue decontamination chamber temperature and is higher than 200 degrees centigrade, and this moment is material " burning to death " not only, new pollution also occurs.
In the process of lime precipitation, the aqueous solution (containing outstanding absurd creature) of the aluminium iron sulfate that adding 0.1% is prepared find not only to produce a large amount of flowers of wadding a quilt with cotton fast, and settling velocity is very fast, can improve the ability of WWT greatly.
In bleaching and dyeing wastewater, the aqueous solution (containing outstanding absurd creature) of the aluminium iron sulfate that input 0.08% is prepared is found to produce a large amount of waddings and is spent, and treatment effect is better than the effect that drops into 0.06% industrial sulphuric acid aluminum flocculation, and sedimentation speed is obviously faster than the latter.
In addition,, add the industrial hot sulfuric acid of the quality percentage degree of depth 70%, mix and stir, also can prepare aluminium iron sulfate after placing a week if will pass through the residue that contains a large amount of calcium, alite after the lime precipitation.
The aluminium iron sulfate that adding 0.15% is prepared in handling leather waste water can be 5000 with COD (COD), and colourity is 230 leather waste water, and reducing to COD is 1500, and colourity is 70.
More than be merely preferred implementation of the present invention; It is not qualification to protection scope of the present invention; All and of the present invention gordian techniquies do not have to produce difference in essence, to the deduction or replace of above-mentioned embodiment, all should be regarded as within the protection domain that falls into this case.
Claims (2)
1. a rare-earth mineral leaches the comprehensive utilization process of waste liquid and Rare Earth Production calcining waste heat; It is characterized in that: the waste water that will after peracid dissolves rare-earth mineral, discharge is used lime treatment; What form contains calcium, iron aluminium salt residue; In residue, add the aluminium iron sulfate water conditioner that sulfur acid calcium is processed in mass percentage concentration 70% above sulfuric acid slaking, slaking is the waste heat of comprehensive utilization rare earth calcining generation and the smoke-box waste heat of boiler; Said acid dissolving rare-earth mineral is: carbonated rare earth or rare earth oxalate fine fodder are used dissolving with hydrochloric acid, be used to extract pure rare earth, extraction back waste water also contains Cl except containing aluminium, ferro element
-, Cl
-The catalyzer for preparing aluminium iron sulfate as postorder; Said sour slaking is that the residue that produces after the lime precipitation is mixed with the sulfuric acid of mass percentage concentration more than 70%; Mol ratio is at 2:3～2:3.5; Be controlled in the stockpile temperature and carry out slaking under 80-150 degree centigrade and stack; Utilize the waste heat that produces in rare earth calcining or the boiler flue to come controlled temperature, become the aluminium iron sulfate that promptly is converted into water conditioner----sulfur acid calcium after yellowish to the stockpile color.
2. a rare-earth mineral leaches the comprehensive utilization process of waste liquid and Rare Earth Production calcining waste heat; It is characterized in that: the waste water that will after peracid dissolves rare-earth mineral, discharge is used lime treatment; What form contains calcium, iron aluminium salt residue; In residue, add the aluminium iron sulfate water conditioner that sulfur acid calcium is processed in mass percentage concentration 70% above sulfuric acid slaking, slaking is the waste heat of comprehensive utilization rare earth calcining generation and the smoke-box waste heat of boiler; Said acid dissolving rare-earth mineral is: behind sulfuric acid or the ammonia chloride calcining rare earth ore concentrate, leach liquor also has the ferro-aluminum element except containing rare earth, is settled out behind the rare earth fine fodder remaining ferro-aluminum element in the solution; Said sour slaking is that the residue that produces after the lime precipitation is mixed with the sulfuric acid of mass percentage concentration more than 70%, and mol ratio also adds Cl at 2:3～2:3.5 in the residue
-, be controlled in the stockpile temperature and carry out slaking under 80-150 degree centigrade and stack, utilize the waste heat that produces in rare earth calcining or the boiler flue to come controlled temperature, become the aluminium iron sulfate that promptly is converted into water conditioner----sulfur acid calcium after yellowish to the stockpile color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100660474A CN102173491B (en) | 2011-03-18 | 2011-03-18 | Process for comprehensively utilizing rare-earth ore leaching waste liquid and calcining waste heat in rare earth production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100660474A CN102173491B (en) | 2011-03-18 | 2011-03-18 | Process for comprehensively utilizing rare-earth ore leaching waste liquid and calcining waste heat in rare earth production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102173491A CN102173491A (en) | 2011-09-07 |
| CN102173491B true CN102173491B (en) | 2012-07-25 |
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| CN2011100660474A Active CN102173491B (en) | 2011-03-18 | 2011-03-18 | Process for comprehensively utilizing rare-earth ore leaching waste liquid and calcining waste heat in rare earth production |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864319B (en) * | 2011-10-08 | 2015-02-04 | 中国恩菲工程技术有限公司 | Method for leaching rare earth elements from nickel oxide ore |
| CN103539240A (en) * | 2013-02-06 | 2014-01-29 | 盐城工学院 | Method for preparing rare-earth-waste-residue coagulant |
| CN103553194A (en) * | 2013-07-31 | 2014-02-05 | 乔占印 | Rear-earth poly aluminum ferric sulfate and preparation method thereof |
| CN108754189A (en) * | 2018-07-11 | 2018-11-06 | 中铝稀土（江苏）有限公司 | A kind of rare-earth original ore dissolving method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1337356A (en) * | 2001-09-15 | 2002-02-27 | 邓中杰 | Production process of aluminium iron sulfate polymer as composite water purifying agent |
| CN1583593A (en) * | 2004-06-04 | 2005-02-23 | 刘启旺 | One step synthesis of polymerized aluminum-iron sulfurate from industrial waste slags |
| CN101481161A (en) * | 2009-02-23 | 2009-07-15 | 杨祺 | Method for producing rare-earth poly-ferric aluminum silicate sulfate from rare earth-containing sludge and iron-containing dust sludge |
-
2011
- 2011-03-18 CN CN2011100660474A patent/CN102173491B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1337356A (en) * | 2001-09-15 | 2002-02-27 | 邓中杰 | Production process of aluminium iron sulfate polymer as composite water purifying agent |
| CN1583593A (en) * | 2004-06-04 | 2005-02-23 | 刘启旺 | One step synthesis of polymerized aluminum-iron sulfurate from industrial waste slags |
| CN101481161A (en) * | 2009-02-23 | 2009-07-15 | 杨祺 | Method for producing rare-earth poly-ferric aluminum silicate sulfate from rare earth-containing sludge and iron-containing dust sludge |
Non-Patent Citations (1)
| Title |
|---|
| 孙勇等.改性粉煤灰在工业污水中的应用.《中国资源综合利用》.2010,第28卷(第10期),第28-31页. * |
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Address after: 366300 new industrial zone, Changting Economic Development Zone, Longyan City, Fujian Province Patentee after: Fujian Jinlong Rare Earth Co.,Ltd. Country or region after: China Address before: Changting Jinlong Rare Earth Co.,Ltd. Industrial New Area Changting Economic Development Zone Longyan City Fujian Province Patentee before: FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH Co.,Ltd. Country or region before: China |
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