CN100998964A - Series red mud clinker dissolving out and red mud separation technology - Google Patents
Series red mud clinker dissolving out and red mud separation technology Download PDFInfo
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- CN100998964A CN100998964A CNA2007100100777A CN200710010077A CN100998964A CN 100998964 A CN100998964 A CN 100998964A CN A2007100100777 A CNA2007100100777 A CN A2007100100777A CN 200710010077 A CN200710010077 A CN 200710010077A CN 100998964 A CN100998964 A CN 100998964A
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- red mud
- hydrocyclone
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- overflow
- separation technology
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/0646—Separation of the insoluble residue, e.g. of red mud
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
A serial process for extracting clinker from red mud and separating red mud in the production of alumina includes such steps as wet ball grinding, spiral classifying, hydraulic cycloning in hydraulic cycloning apparatus, separating in settling bath, desiliconizing, returning the sand from spiral classifier back to ball grinder, collecting the bottom stream of hydraulic cycloning apparatus and settling bath, mixing it with secondary washing liquid, and returning it back to red mud washing step.
Description
Technical field
The present invention relates to red mud clinker stripping and red mud separation processes in a kind of series process aluminum oxide production process, belong to technical field of alumina production.
Background technology
The bauxite grog is the different of impurities content with the main distinction of red mud clinker.The bauxite grog of alumina producer adopts the one section abrasive material of ball mill wet-milling or the stripping flow process of two sections abrasive materials at present.Series process factory adopts cartridge type digester and two sections stripping flow processs of rod mill.The red mud separation equipment all adopts subsider.At present, adopt existing one section abrasive material or tubular digester and two sections stripping flow processs of rod mill to have following technical problem for red mud clinker or based on the grog of red mud:
1. because the stripping slurries contain height admittedly, adopt the sedimentation separation sinking speed slow, equipment capacity is low.
2. the red mud amount that contacts with the higher sodium aluminate solution of concentration is big, the time is long, and the secondary response loss is big, reduces the grog net digestion efficiency.
3. as adopt other separation equipment: sedimentation filter, folding band filter etc. exist that operating condition is abominable, labour intensity is big, labor productivity is low, the high shortcoming of production and processing expense.
4. as adopt tubular digester and two sections stripping flow processs of rod mill, there is the investment of flow process complex device high, shortcoming such as the plant maintenance workload is big, and floor space is big.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of series red mud clinker stripping and red mud separation technology, purpose is raising equipment capacity and grog net digestion efficiency, improves operating condition, reduces labour intensity and production and processing expense, reduces equipment investment, reduces the plant maintenance workload.
In order to solve the problems of the technologies described above, the present invention is achieved in that a kind of series red mud clinker stripping and red mud separation technology, the grog of being sent here by the grog firing process is sent into ball mill after through the fodder machine metering, to also join in the ball mill through the adjustment liquid after the flowmeter metering simultaneously, grog carries out the wet-milling stripping with adjustment liquid in ball mill, go out grinding slurry and enter grader, classifier overflow carries out classification through stripping groove pumping hydrocyclone, grader sand return return of serve grinding machine continues levigate stripping, the overflow gravity flow of hydrocyclone enters separation tank and carries out liquid-solid separation, the underflow of hydrocyclone and subsider underflow merge with after the red mud secondary cleaning water mixes again, pumping laterite washing operation, the subsider overflow is through overflow launder pumping desiliconization process.
Before described hydrocyclone charging aperture, establish slag removal tank.
Described hydrocyclone is arranged on the separation tank.
Described ball mill is an overflow shape ball mill.
Described hydrocyclone overflow enters subsider and carries out adding flocculant before the liquid-solid separation.
Described adjustment liquid is to be made of in red mud wash liquor, seed precipitation solution and the carbon dust mother liquor one or more.
Advantage of the present invention and effect are as follows:
1. contain higher stripping slurries admittedly,, reduced the charging of advancing separation tank and contained admittedly, improved the sinking speed of red mud in subsider and reduced the separation tank load by hydroclone classification.
2. realized the quick separation of part red mud, reduced the red mud amount that in subsider, contacts, and shortened the time of contact of red mud and solution, effectively reduced the secondary response loss, improved Al with solution
2O
3Dissolution rate.
3. hydrocyclone is placed on the separation tank, makes its overflow gravity flow enter separation tank.
4. be provided with slag removal tank before the hydrocyclone charging aperture, entering of not only prevent to scab piece and foreign material also prevents the obstruction of hydrocyclone sand setting mouth, for the operate as normal of hydrocyclone has been created condition.
5. flow process is simple, and is easy to operate, the labor productivity height, and the production and processing expense is low, and the equipment investment expense is low, and floor space is little.
Description of drawings
Fig. 1 is series red mud clinker stripping of the present invention and red mud separation technology flow chart.
Among the figure: 1, grog storehouse; 2, fodder machine; 3, ball mill; 4, spiral classifier; 5, stripping slurry tank; 6, pump; 7, slag removal tank; 8, hydrocyclone; 9, separation tank; 10, overflow launder; 11, flood pump; 12, underflow groove; 13, underflow pump; 14, adjust liquid bath.
A, remove the thick liquid of desiliconization; B, seed precipitation solution; C, carbon mother liquid; D, grader sand return; E, classifier overflow; F, hydrocyclone overflow; G, hydrocyclone underflow; H, subsider overflow; I, subsider underflow; J, red mud primary wash liquor; K, flocculant; L, remove the laterite washing slurries; M, red mud secondary cleaning water.
The specific embodiment
Below inventive embodiment is described in detail in conjunction with the accompanying drawings, but protection scope of the present invention is not limit by embodiment.
As shown in Figure 1, technology of the present invention is as follows: the grog in the grog storehouse 1 is sent in the overflow shape ball mill 3 after measuring with fodder machine 2.Whether red mud wash liquor j and seed precipitation solution b (adding according to arts demand), carbon mother liquid c (whether adding according to arts demand) enter respectively and adjust liquid bath 14, join ball mill 3 after each measures by flowmeter in proportion with grog.Grog carries out the wet-milling stripping with adjustment liquid in ball mill, go out grinding slurry and enter spiral classifier 4, classifier overflow e is through stripping slurry tank 5, send into hydrocyclone 8 with pump 6 through slag removal tank 7 and carry out classification, sand return d return of serve grinding machine continues levigate stripping, hydrocyclone 8 positions are on separation tank, hydrocyclone overflow f enters separation tank 9 simultaneously with flocculant (whether adding according to arts demand) and carries out liquid-solid the separation, hydrocyclone underflow g is with after subsider underflow i enters underflow groove 12 and red mud secondary cleaning water m mixes, send the laterite washing operation with underflow pump 13, subsider overflow h enters overflow launder 10, send desiliconization process with flood pump 11.Be provided with slag removal tank 7 before hydrocyclone 8 charging apertures, not only prevented to scab piece and foreign material enter, and have prevented the obstruction of hydrocyclone sand setting mouth again.
Claims (7)
1, a kind of series red mud clinker stripping and red mud separation technology, it is characterized in that sending into ball mill after the grog of being sent here by the grog firing process measures through fodder machine, to adjust liquid simultaneously also joins in the ball mill, grog carries out the wet-milling stripping with adjustment liquid in ball mill, go out grinding slurry and enter grader, classifier overflow carries out classification through stripping groove pumping hydrocyclone, grader sand return return of serve grinding machine continues levigate stripping, the overflow gravity flow of hydrocyclone enters subsider and carries out liquid-solid separation, the underflow of hydrocyclone and subsider underflow merge with after the red mud secondary cleaning water mixes again, pumping laterite washing operation, the subsider overflow is through overflow launder pumping desiliconization process.
2, series red mud clinker stripping according to claim 1 and red mud separation technology is characterized in that establishing slag removal tank before described hydrocyclone charging aperture.
3, series red mud clinker stripping according to claim 1 and red mud separation technology is characterized in that described hydrocyclone is arranged on the separation tank.
4, series red mud clinker stripping according to claim 1 and red mud separation technology is characterized in that described ball mill is an overflow shape ball mill.
5, series red mud clinker stripping according to claim 1 and red mud separation technology is characterized in that described hydrocyclone overflow enters subsider and carries out adding flocculant before the liquid-solid separation.
6, series red mud clinker stripping according to claim 1 and red mud separation technology is characterized in that described adjustment liquid is to be made of in red mud wash liquor, seed precipitation solution and the carbon mother liquid one or more.
7, series red mud clinker stripping according to claim 1 and red mud separation technology is characterized in that described grader is a spiral classifier.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100100777A CN100571878C (en) | 2007-01-13 | 2007-01-13 | Series red mud clinker stripping and red mud separation technology |
| PCT/CN2008/000093 WO2008086736A1 (en) | 2007-01-13 | 2008-01-14 | A technology of dissolving out red mud clinker and separating red mud by series process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100100777A CN100571878C (en) | 2007-01-13 | 2007-01-13 | Series red mud clinker stripping and red mud separation technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN100998964A true CN100998964A (en) | 2007-07-18 |
| CN100571878C CN100571878C (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100100777A Active CN100571878C (en) | 2007-01-13 | 2007-01-13 | Series red mud clinker stripping and red mud separation technology |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100571878C (en) |
| WO (1) | WO2008086736A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951664A (en) * | 2012-11-28 | 2013-03-06 | 中国铝业股份有限公司 | Method for leaching sintered clinker |
| CN103111103A (en) * | 2013-02-28 | 2013-05-22 | 闵方权 | Rotational flow centrifugal separation device |
| CN103539172A (en) * | 2012-07-09 | 2014-01-29 | 沈阳铝镁设计研究院有限公司 | Cyclone and settling tank combined red mud separation washing technique and device |
| CN103663512A (en) * | 2012-08-31 | 2014-03-26 | 沈阳铝镁设计研究院有限公司 | Aluminum oxide clinker leaching process |
| CN107597410A (en) * | 2017-08-12 | 2018-01-19 | 陈俊 | A kind of sludge separator of high-efficiency environment friendly |
| CN108218181A (en) * | 2018-02-13 | 2018-06-29 | 沈阳环境科学研究院 | A kind of river and lake pool gushes bed mud deep-graded processing system and method |
| CN109439023A (en) * | 2018-11-07 | 2019-03-08 | 张勇 | A technique for functional filler production is carried out using red mud |
| CN109704375A (en) * | 2019-03-13 | 2019-05-03 | 国家电投集团山西铝业有限公司 | Series process sintering method and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107720794B (en) * | 2017-11-09 | 2023-10-10 | 茌平信发华宇氧化铝有限公司 | Settling tank scar soda boiling and recycling system and working method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19903011A1 (en) * | 1999-01-26 | 2000-08-03 | Akw Apparate Verfahren | Separation and disposal of sandy fraction in processing bauxite involves removing aqueous sodium hydroxide solution from hot mixture in hydrocyclone and separating sand, red mud and residual solution on screen |
| CN1218875C (en) * | 2001-08-27 | 2005-09-14 | 中南大学 | High-concentration sodium aluminate solution preparation |
| CN1256279C (en) * | 2002-03-26 | 2006-05-17 | 中国铝业股份有限公司 | Red clay separation process for alumina sintering production |
| JP4096097B2 (en) * | 2003-03-25 | 2008-06-04 | 独立行政法人産業技術総合研究所 | How to remove chlorine in red mud |
| CN1314591C (en) * | 2004-05-14 | 2007-05-09 | 山东铝业股份有限公司 | Process for preparing alumina by two-component sintering method |
| CN1785813A (en) * | 2005-11-24 | 2006-06-14 | 山东铝业股份有限公司 | Production method of high concentration stripping liquid in sintering method aluminium oxide production |
-
2007
- 2007-01-13 CN CNB2007100100777A patent/CN100571878C/en active Active
-
2008
- 2008-01-14 WO PCT/CN2008/000093 patent/WO2008086736A1/en active Application Filing
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539172A (en) * | 2012-07-09 | 2014-01-29 | 沈阳铝镁设计研究院有限公司 | Cyclone and settling tank combined red mud separation washing technique and device |
| CN103539172B (en) * | 2012-07-09 | 2015-08-19 | 沈阳铝镁设计研究院有限公司 | A kind of red mud separating washing technology method that swirler is combined with subsider and device |
| CN103663512A (en) * | 2012-08-31 | 2014-03-26 | 沈阳铝镁设计研究院有限公司 | Aluminum oxide clinker leaching process |
| CN102951664A (en) * | 2012-11-28 | 2013-03-06 | 中国铝业股份有限公司 | Method for leaching sintered clinker |
| CN103111103A (en) * | 2013-02-28 | 2013-05-22 | 闵方权 | Rotational flow centrifugal separation device |
| CN107597410A (en) * | 2017-08-12 | 2018-01-19 | 陈俊 | A kind of sludge separator of high-efficiency environment friendly |
| CN107597410B (en) * | 2017-08-12 | 2019-07-09 | 陈俊 | A kind of sludge separator of high-efficiency environment friendly |
| CN108218181A (en) * | 2018-02-13 | 2018-06-29 | 沈阳环境科学研究院 | A kind of river and lake pool gushes bed mud deep-graded processing system and method |
| CN109439023A (en) * | 2018-11-07 | 2019-03-08 | 张勇 | A technique for functional filler production is carried out using red mud |
| CN109704375A (en) * | 2019-03-13 | 2019-05-03 | 国家电投集团山西铝业有限公司 | Series process sintering method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100571878C (en) | 2009-12-23 |
| WO2008086736A1 (en) | 2008-07-24 |
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| C56 | Change in the name or address of the patentee |
Owner name: SHENYANG ALUMINUM + MAGNESIUM ENGINEERING + RESEAR Free format text: FORMER NAME: SHENYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee after: Shenyang Aluminum & Magnesium Engineering & Research Institute Co., Ltd. Address before: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee before: Shenyang Aluminium and Magnesium Design Institute |