CN104150514B - A kind of device for formulating of crystal seed slip of aluminum oxide and method - Google Patents
A kind of device for formulating of crystal seed slip of aluminum oxide and method Download PDFInfo
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- CN104150514B CN104150514B CN201410410661.1A CN201410410661A CN104150514B CN 104150514 B CN104150514 B CN 104150514B CN 201410410661 A CN201410410661 A CN 201410410661A CN 104150514 B CN104150514 B CN 104150514B
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- square position
- mother liquor
- seed
- pump
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- 239000013078 crystal Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 20
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000012452 mother liquor Substances 0.000 claims abstract description 42
- 239000002002 slurry Substances 0.000 claims abstract description 37
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 12
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 12
- 239000004571 lime Substances 0.000 claims abstract description 12
- 238000001556 precipitation Methods 0.000 claims abstract description 12
- 238000012546 transfer Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 11
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 24
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 20
- 241000406668 Loxodonta cyclotis Species 0.000 claims description 15
- 239000012670 alkaline solution Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 16
- 238000004131 Bayer process Methods 0.000 abstract description 13
- 238000002360 preparation method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000000243 solution Substances 0.000 description 13
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical class [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 229910001388 sodium aluminate Inorganic materials 0.000 description 5
- 229910001570 bauxite Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The device for formulating of the crystal seed slip of aluminum oxide of the present invention, comprise square position slurry vessel, square position mother liquor tank, seed precipitation tank, thin seed subsider, square position shurry pump, square position mother liquor pump, mother liquor transfer lime, conveying supervisor and thin seed subsider underflow pump, the outlet at bottom of described square position slurry vessel and the outlet at bottom of square position mother liquor tank are by square position shurry pump and coordinate pipeline connection; The outlet at bottom of described square position mother liquor tank is also communicated with square position mother liquor pump intake; Described mother liquor transfer lime is responsible for and the inlet communication at thin seed subsider top with conveying respectively through Y-junction; Described conveying supervisor through Y-junction respectively with the inlet communication at thin seed subsider underflow pump outlet and seed precipitation tank top.The device for formulating of this crystal seed slip and method use when being particularly suitable for Bayer process alumina producing commissioning run test, crystal seed slurry preparation can not be subject to weather effect when Bayer process aluminum oxide commissioning run test, shorten and add the crystal seed time, improve labor productivity.
Description
Technical field
The invention belongs to technical field of alumina production, be specifically related to a kind of device for formulating and the method that are more adapted at crystal seed slip when Bayer process alumina producing feeds intake.
Background technology
Bayer process is for the treatment of low silicon bauxite, particularly when gibbsitic bauxite or a hydraulic bauxite, there is the features such as flow process is simple, operation convenience, good economical benefit, the production of current whole world major part aluminum oxide and aluminium hydroxide is all use Bayer process, China's alumina producing Bayer process is started late, but the alumina production line overwhelming majority of new operation was later all use Bayer process to produce from 2000.
A principal feature of alumina producing Bayer process be exactly saturated sodium aluminate solution at normal temperatures, as long as add aluminium hydroxide as crystal seed induced crystallization, and constantly stir, aluminum oxide in solution just can be separated out in aluminium hydroxide, until sodium aluminate reaches certain unsaturated concentration in solution, the decomposition of crystal seed process of Here it is sodium aluminate solution.
In the alumina producing flow process newly come into operation, a certain amount of crystal seed slip must be prepared and carry out subsequent production.The preparation of crystal seed slip mainly certain density alkali lye (NaOH) mixes with solid aluminum hydroxide according to a certain percentage and forms, whether crystal seed slurry preparation success, whether has influence on whole production commissioning run test smoothly and subsequent production continuous, stable.
Current most domestic Alumina Enterprise is all carry out in operating environment in the open when crystal seed slurry preparation, and mainly utilizes a large amount of manual work, is transported to decomposer for subsequent use after using spareslots to be dissolved by aluminum hydroxide solid alkali lye by shurry pump.Part is in the alumina producer in tropical rainy climate or rainy season frequent area, during outdoor artificial preparation crystal seed slip, rainfall can cause the solid aluminum hydroxide water ratio stacked to raise (reaching 10% ~ 20%), reduce the concentration of the rear crystal seed slip of preparation, open work can make partial impurities (such as aluminium hydroxide packaging woven bag etc.) infiltrate flow process, affects the operation of shurry pump.Meanwhile, a large amount of manual work is consuming time and dangerous, and production cost is also higher.
Summary of the invention
The present invention aims to provide a kind of device for formulating and method of crystal seed slip of aluminum oxide, this device and method uses when being particularly suitable for Bayer process alumina producing commissioning run test, crystal seed slurry preparation weather effect can be subject to when Bayer process aluminum oxide commissioning run test, shorten and add the crystal seed time, improve labor productivity.
The device for formulating of the crystal seed slip of a kind of aluminum oxide of the present invention, comprises square position slurry vessel, square position mother liquor tank, seed precipitation tank, thin seed subsider, square position shurry pump, square position mother liquor pump, mother liquor transfer lime, conveying supervisor and thin seed subsider underflow pump; The outlet at bottom of described square position slurry vessel and the outlet at bottom of square position mother liquor tank are by square position shurry pump and coordinate pipeline connection; The outlet at bottom of described square position mother liquor tank is also communicated with square position mother liquor pump intake, and square position mother liquor pump outlet is communicated with mother liquor transfer lime; Described mother liquor transfer lime is responsible for and the inlet communication at thin seed subsider top with conveying respectively through Y-junction; Described conveying supervisor through Y-junction respectively with the inlet communication at thin seed subsider underflow pump outlet and seed precipitation tank top, the outlet bottom the import of thin seed subsider underflow pump and thin seed subsider.Described seed precipitation tank top is provided with grading machine, and described grading machine is connected with decomposer, by the inlet communication at pipeline and slurry vessel top, square position bottom it.Described square position slurry vessel is provided with blanking device, and described blanking device comprises the oblique elephant trunk of blanking, belt and overhead traveling crane are filtered in square position; The conveying exit end of belt and the suitable for reading corresponding of the oblique elephant trunk of blanking are filtered in described described square position; Aluminium hydroxide raw material material grasping filters on belt to square position by described overhead traveling crane, utilizes square position to filter the reverse feeding of belt and enters in the oblique elephant trunk of blanking, and then be transported in the slurry vessel of square position.The compound method of the crystal seed slip of a kind of aluminum oxide of the present invention, comprises the following steps:
A, in decomposer deployed severe alkaline solution, its concentration is 140-150g/L, is delivered in the slurry vessel of square position by deployed severe alkaline solution;
B, aluminium hydroxide raw material is filtered belt through square position send in blanking oblique elephant trunk, and then be transported in the slurry vessel of square position;
C, aluminium hydroxide raw material with severe alkaline solution fully mix in square position slurry vessel (1), be mixed with the crystal seed slip that solid content is 350-450g/L, concentration of lye is 130-150g/L;
After D, crystal seed slip mix, with square position shurry pump, seed stock pump is entered square position mother liquor tank.
The alumina seed inking device providing a kind of full-automatic flow process of the present invention, the flow process devising each seed production equipment of the reasonable science of this device and job order, current respective independently processing apparatus organic assembling is got up, portion link such as decomposer can realize multifunctional application, decrease production process equipment and workflow setting, alumina seed configuration is carried out not by weather effect by this device, solid aluminum hydroxide water content is stablized, the impurity that layoutprocedure enters is few, shorten and add the crystal seed time, greatly reduce personnel's labor capacity, improve labor productivity.
Full-automatic flow process alumina seed collocation method provided by the present invention, process flow has had further makes rational planning for, and manual labor's amount reduces greatly, not by weather effect, proportioning accuracy and accuracy greatly promote, and reduce the introducing of impurity component, have good technique effect.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention.
Sequence number in figure and Each part and title as follows:
1-square position slurry vessel, 2-square position mother liquor tank, 3-seed precipitation tank, the thin seed subsider of 4-, 5-decomposer, belt is filtered in 6-blanking oblique elephant trunk 7-square position; 11-square position shurry pump, 21-square position mother liquor pump, 22-mother liquor transfer lime, 23-carries supervisor, 41-thin seed subsider underflow pump, 51-grading machine.
Embodiment
Specifically embodiments of the invention are set forth below in conjunction with accompanying drawing
Embodiment 1
As shown in Figure 1, a kind of device for formulating of crystal seed slip of aluminum oxide, comprise square position slurry vessel 1, square position mother liquor tank 2, seed precipitation tank 3, thin seed subsider 4, square position shurry pump 11, square position mother liquor pump 21, mother liquor transfer lime 22, conveying supervisor 23 and thin seed subsider underflow pump 41, the outlet at bottom of described square position slurry vessel 1 and the outlet at bottom of square position mother liquor tank 2 are by square position shurry pump 11 and coordinate pipeline connection; The outlet at bottom of described square position mother liquor tank 2 is also communicated with square position mother liquor pump 21 entrance, and the outlet of square position mother liquor pump 21 is communicated with mother liquor transfer lime 22; Described mother liquor transfer lime 22 through Y-junction respectively with conveying supervisor 23 and the inlet communication at thin seed subsider 4 top; Described conveying supervisor 23 through Y-junction respectively with the outlet of thin seed subsider underflow pump 41 and the inlet communication at seed precipitation tank 3 top, the outlet bottom the import of thin seed subsider underflow pump 41 and thin seed subsider 4.
Described seed precipitation tank 3 top is provided with grading machine 51, and described grading machine 51 is connected with decomposer 5, by the inlet communication at pipeline and square position slurry vessel 1 top bottom it.Described square position slurry vessel 1 is provided with blanking device, and described blanking device comprises the oblique elephant trunk 6 of blanking, belt 7 and overhead traveling crane are filtered in square position; The conveying exit end of belt 7 and the suitable for reading corresponding of the oblique elephant trunk of blanking 6 are filtered in described described square position; Aluminium hydroxide raw material material grasping filters on belt 7 to square position by described overhead traveling crane, utilizes square position to filter the reverse feeding of belt 7 and enters in the oblique elephant trunk 6 of blanking, and then be transported in square position slurry vessel 1.
Embodiment 2
The crystal seed slip compound method of Bayer process alumina producing:
A, in decomposer 5 deployed severe alkaline solution, its concentration is 140g/L, is delivered in square position slurry vessel 1 by deployed severe alkaline solution;
B, aluminium hydroxide raw material is filtered belt 7 send in the oblique elephant trunk 6 of blanking through square position, and then be transported in square position slurry vessel 1;
C, aluminium hydroxide raw material with severe alkaline solution fully mix in square position slurry vessel 1, be mixed with the crystal seed slip that solid content is 350g/L, concentration of lye is 130g/L;
After D, crystal seed slip mix, with square position shurry pump 11, seed stock pump is entered square position mother liquor tank 2.
At normal temperatures, drop in saturated sodium aluminate solution by the crystal seed slip obtained, the aluminum oxide in solution just can be separated out in aluminium hydroxide, until sodium aluminate reaches certain unsaturated concentration in solution.
Embodiment 3
The crystal seed slip preparation steps of Bayer process alumina producing:
A, in decomposer 5 deployed severe alkaline solution, its concentration is 150g/L, is delivered in square position slurry vessel 1 by deployed severe alkaline solution;
B, aluminium hydroxide raw material is filtered belt 7 send in the oblique elephant trunk 6 of blanking through square position, and then be transported in square position slurry vessel 1;
C, aluminium hydroxide raw material with severe alkaline solution fully mix in square position slurry vessel 1, be mixed with the crystal seed slip that solid content is 450g/L, concentration of lye is 150g/L;
After D, crystal seed slip mix, with square position shurry pump 11, seed stock pump is entered square position mother liquor tank 2.
At normal temperatures, drop in saturated sodium aluminate solution by the crystal seed slip obtained, the aluminum oxide in solution just can be separated out in aluminium hydroxide, until sodium aluminate reaches certain unsaturated concentration in solution.
Embodiment 4
The crystal seed slip preparation steps of Bayer process alumina producing:
A, in decomposer 5 deployed severe alkaline solution, its concentration is 145g/L, is delivered in square position slurry vessel 1 by deployed severe alkaline solution;
B, aluminium hydroxide raw material is filtered belt 7 send in the oblique elephant trunk 6 of blanking through square position, and then be transported in square position slurry vessel 1;
C, aluminium hydroxide raw material with severe alkaline solution fully mix in square position slurry vessel 1, be mixed with the crystal seed slip that solid content is 400g/L, concentration of lye is 140g/L;
After D, crystal seed slip mix, with square position shurry pump 11, seed stock pump is entered square position mother liquor tank 2.
At normal temperatures, drop in saturated sodium aluminate solution by the crystal seed slip obtained, the aluminum oxide in solution just can be separated out in aluminium hydroxide, until sodium aluminate reaches certain unsaturated concentration in solution.
Claims (1)
1. a compound method for the crystal seed slip of aluminum oxide, is characterized in that:
Apply the device for formulating of the crystal seed slip of aluminum oxide, the device for formulating of the crystal seed slip of described aluminum oxide comprises square position slurry vessel (1), square position mother liquor tank (2), seed precipitation tank (3), thin seed subsider (4), square position shurry pump (11), square position mother liquor pump (21), mother liquor transfer lime (22), conveying supervisor (23) and thin seed subsider underflow pump (41); The outlet at bottom of described square position slurry vessel (1) and the outlet at bottom of square position mother liquor tank (2) are by square position shurry pump (11) and coordinate pipeline connection; The outlet at bottom of described square position mother liquor tank (2) is also communicated with square position mother liquor pump (21) entrance, and the outlet of square position mother liquor pump (21) is communicated with mother liquor transfer lime (22); Described mother liquor transfer lime (22) is responsible for the inlet communication at (23) and thin seed subsider (4) top with conveying respectively through Y-junction; Described conveying supervisor (23) through Y-junction respectively with the outlet of thin seed subsider underflow pump (41) and the inlet communication at seed precipitation tank (3) top, the outlet bottom the import of thin seed subsider underflow pump (41) and thin seed subsider (4); Described seed precipitation tank (3) top is provided with grading machine (51), and described grading machine (51) is connected with decomposer (5), by the inlet communication at pipeline and square position slurry vessel (1) top bottom it; Described square position slurry vessel (1) is provided with blanking device, and described blanking device comprises the oblique elephant trunk of blanking (6), belt (7) and overhead traveling crane are filtered in square position; The conveying exit end of belt (7) and the suitable for reading corresponding of the oblique elephant trunk of blanking (6) are filtered in described described square position; Aluminium hydroxide raw material material grasping filters on belt (7) to square position by described overhead traveling crane, utilizes square position to filter the reverse feeding of belt (7) and enters in the oblique elephant trunk of blanking (6), and then be transported in square position slurry vessel (1);
Described collocation method comprises the following steps:
A, in decomposer (5) deployed severe alkaline solution, its concentration is 140-150g/L, is delivered to by deployed severe alkaline solution in square position slurry vessel (1);
B, aluminium hydroxide raw material is filtered belt (7) through square position send in the oblique elephant trunk of blanking (6), and then be transported in square position slurry vessel (1);
C, aluminium hydroxide raw material with severe alkaline solution fully mix in square position slurry vessel (1), be mixed with solid content 350-450g/L, crystal seed slip that concentration of lye is 130-150g/L;
After D, crystal seed slip mix, with square position shurry pump (11), seed stock pump is entered square position mother liquor tank (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410661.1A CN104150514B (en) | 2014-08-20 | 2014-08-20 | A kind of device for formulating of crystal seed slip of aluminum oxide and method |
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| CN201410410661.1A CN104150514B (en) | 2014-08-20 | 2014-08-20 | A kind of device for formulating of crystal seed slip of aluminum oxide and method |
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| CN104150514A CN104150514A (en) | 2014-11-19 |
| CN104150514B true CN104150514B (en) | 2015-12-02 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160679A (en) * | 1996-11-15 | 1997-10-01 | 山西铝厂 | Primary mineral pulp preparation process in Baeyer's alumina producing process |
| CN102328944A (en) * | 2011-07-04 | 2012-01-25 | 中国铝业股份有限公司 | Production method for continuously producing aluminum hydroxide crystal nucleus seed |
| CN204173925U (en) * | 2014-08-20 | 2015-02-25 | 中国铝业股份有限公司 | A kind of device for formulating of crystal seed slip of aluminum oxide |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS573715A (en) * | 1980-06-09 | 1982-01-09 | Showa Alum Ind Kk | Preparation of alumina having extremely low content of radioactive element |
| JP2658771B2 (en) * | 1991-12-27 | 1997-09-30 | 日本軽金属株式会社 | Addition method of red mud settling aid in sedimentation separation of red mud |
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2014
- 2014-08-20 CN CN201410410661.1A patent/CN104150514B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160679A (en) * | 1996-11-15 | 1997-10-01 | 山西铝厂 | Primary mineral pulp preparation process in Baeyer's alumina producing process |
| CN102328944A (en) * | 2011-07-04 | 2012-01-25 | 中国铝业股份有限公司 | Production method for continuously producing aluminum hydroxide crystal nucleus seed |
| CN204173925U (en) * | 2014-08-20 | 2015-02-25 | 中国铝业股份有限公司 | A kind of device for formulating of crystal seed slip of aluminum oxide |
Non-Patent Citations (3)
| Title |
|---|
| 中铝山西分公司氢氧化铝浆液分级的生产实践;张伟年等;《中国有色冶金》;20040630(第3期);第7-9页，第36页 * |
| 氢氧化铝的晶种分级与种分工艺的改革;吴金水;《轻金属》;19921231(第10期);第10-17,22页 * |
| 超细氢氧化铝晶种制备技术研究;李太昌;《轻金属》;20031231(第6期);第9-11页 * |
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