CN103408048A - Filtration-integration integrated plant and method for producing aluminum oxide by Bayer process - Google Patents
Filtration-integration integrated plant and method for producing aluminum oxide by Bayer process Download PDFInfo
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- CN103408048A CN103408048A CN2013103824352A CN201310382435A CN103408048A CN 103408048 A CN103408048 A CN 103408048A CN 2013103824352 A CN2013103824352 A CN 2013103824352A CN 201310382435 A CN201310382435 A CN 201310382435A CN 103408048 A CN103408048 A CN 103408048A
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Abstract
The invention belongs to the field of mineral processing, and particularly relates to a filtration-integration integrated device and method for producing aluminum oxide by a Bayer process. In the device, a crude liquid tank is connected with a leaf filter through a crude liquid pump, the bottom of the leaf filter is connected with a filter cake tank, and the upper part is connected with a fine liquid tank; the bottom of the fine liquid tank is provided with a fine liquid pump; the fine liquid pump is connected with a vertical disk filter; the filter cake tank is arranged on a 5.000 plane; the lower part of the filter cake tank is provided with a filter cake pump; an aluminum hydroxide slurry tank is arranged above a horizontal disk filter; and the horizontal disk filter is connected with a belt conveyor. The device for aluminum oxide filtration provided by the invention implements filtration-integration integration. The invention reduces the crystal seed tank, mixing unit and other units in the existing device, reduces the corresponding pipelines, valves, pipe fittings and the like, reduces the equipment maintenance and maintenance work load in the device operation process, saves the energy, and lowers the production and labor cost.
Description
Technical field
The invention belongs to the mineral manufacture field, be specifically related to a kind of integrated device and method of filtration of alumina producing Bayer process.
Background technology
At present, in the technical process of alumina producing Bayer process, controlled filter, seminal fluid heat exchange, seed filter and the finished product filtration is very crucial step, and the equipment related to comprises thick liquid bath, crude liquor pump, leaf filter, seminal fluid groove, seminal fluid pump, vertical-disk filter, seed mixer, crystal seed pump, aluminum hydroxide slurry groove, aluminum hydroxide slurry pump, horizontal disk filter, filter cake groove, filter cake pump, taper mother liquor tank, mother liquor tank and mother liquor pump.
The bauxite ore pulp of stripping and red mud wash liquor carry out settlement separate after dilution, obtain crude sodium aluminate solution, be called for short thick liquid, thick liquid is sent into leaf filter through crude liquor pump in thick liquid bath, obtain seminal fluid after the leaf filter, and seminal fluid is pumped into the seed chute of vertical-disk filter through seminal fluid in the seminal fluid groove, entering seed mixer mixes with crystal seed again, through the crystal seed pump delivery, decompose to decomposing in first groove, bottom exploded flows to the aluminum hydroxide slurry groove filtered into finished product, is pumped to horizontal disk filter through aluminum hydroxide slurry; Decompose overflow and enter the mother liquor that vertical-disk filter obtains, be pumped to seminal fluid heat exchange and seminal fluid heat exchange through taper mother liquor tank, mother liquor tank, mother liquor; The filter cake obtained after the filter of leaf filter leaf enters the filter cake groove that is arranged on ▽ ± 0.000 plane, is pumped to the laterite washing separating step through filter cake.
The equipment that each above processing step relates to, be distributed in controlled filter workshop, seminal fluid heat exchange workshop, seed filtration plant and finished product filtration plant, floor space is large, energy consumption is high, production cost is high, technical process is long, the problem that construction investment is large, labor cost is high and labour productivity is low.
Summary of the invention
For the problem that prior art exists, the invention provides a kind of integrated device and method of filtration of alumina producing Bayer process, purpose is to provide and a kind ofly configures rationally, the integrated gasifying device of save energy, reduce cost.
For achieving the above object, major equipment of the present invention comprises thick liquid bath, crude liquor pump, leaf filter, filter cake groove, filter cake pump, seminal fluid groove, seminal fluid pump, vertical-disk filter, aluminum hydroxide slurry groove, horizontal disk filter and rubber conveyer, wherein said thick liquid bath is connected by crude liquor pump with leaf filter, the bottom of leaf filter is connected with the filter cake groove, top is connected with the seminal fluid groove, the bottom of seminal fluid groove is provided with the seminal fluid pump, and the seminal fluid pump is connected with vertical-disk filter; Described filter cake groove is arranged on ▽ 5.000 planes, and the bottom of filter cake groove is provided with the filter cake pump; Described aluminum hydroxide slurry groove is arranged on horizontal disk filter top, and horizontal disk filter is connected with rubber conveyer.
The thick liquid that red mud separating, washing obtains is sent into leaf filter through crude liquor pump in thick liquid bath, after the leaf filter, obtain seminal fluid, seminal fluid is pumped into vertical-disk filter through seminal fluid in the seminal fluid groove, directly together with aluminium hydroxide crystal seed and crystal seed attached liquid, through the chute of vertical-disk filter, deliver to decompose in first groove and decompose, from the aluminum hydroxide slurry that decomposes underflow, from flowing to the aluminum hydroxide slurry groove, after buffering, certainly flow to horizontal plate formula filter; Come the aluminum hydroxide slurry of self-decomposition overflow to enter mother liquor that vertical-disk filter obtains from flowing to the evaporator tank tank field, the filter cake that the filter of leaf filter leaf obtains enters the filter cake groove on ▽ 5.000 planes, is pumped to the laterite washing separating step through filter cake.
Wherein said crude liquor pump, filter cake pump and seminal fluid pump are all with commercial conventional pump, with the purposes difference, it are distinguished here.
Compared with prior art, characteristics of the present invention and beneficial effect are:
(1) the present invention has reduced the equipment such as seed mixer in the existing apparatus and whipping device, crystal seed pump, overflow groove and whipping device thereof, overflow type pump, taper mother liquor tank, mother liquor tank and whipping device, mother liquor pump, aluminum hydroxide slurry pump, aluminum hydroxide slurry recess gauge lattice have been reduced, and reduce the filter cake pump lift, and reduce corresponding pipeline, valve, pipe fitting, pipe support.
Maintenance of equipment and maintenance workload in the device operational process have been reduced like this.For example, in original device, the every monthly repair of crystal seed pipeline once, scabs serious, the maintenance trouble, and in present device, without the crystal seed pipe, seminal fluid and aluminium hydroxide crystal seed are directly through entering decomposer through chute.
(2) floor space that adopts integrated gasifying device of the present invention to save equipment, the annual output 1000kt/y aluminum oxide of take is example: 5128m
2, be only 60% of former floor space, optimized configuration; Reduce constructive investment, the annual output 1000kt/y aluminum oxide of take is example, and constructive investment is 952.802 ten thousand yuan; Energy efficient, the annual output 1000kt/y aluminum oxide of take is example, whole year operation 8760h, 10 years lives, energy consumption is 5886.9 ten thousand kilowatt-hours; Reduce operation cost, the annual output 1000kt/y aluminum oxide of take is example, whole year operation 8760h, and 10 years lives, operation cost is 3237.8 ten thousand yuan.
(3) construction period of device shortens about one month; Save the labour requirement, the annual output 1000kt/y aluminum oxide of take is example, and the labour requirement is 57 people, is only original labour requirement's 46%.
(4) adopt integrated gasifying device of the present invention to carry out the alumina producing Bayer process filtration, simplified processing step and flow process.
The accompanying drawing explanation
Fig. 1 is the integrated gasifying device schematic diagram of the filtration of alumina producing Bayer process of the present invention;
Wherein, 1: thick liquid bath; 2: crude liquor pump; 3: leaf filter; 4: the filter cake groove; 5: the filter cake pump; 6: the seminal fluid groove; 7: the seminal fluid pump; 8: vertical-disk filter; 9: the aluminum hydroxide slurry groove; 10: horizontal disk filter; 11: rubber conveyer;
A: the thick liquid that red mud separating, washing obtains; B: decompose first groove; C: from the aluminum hydroxide slurry that decomposes underflow; D: the aluminum hydroxide slurry that carrys out the self-decomposition overflow; E: evaporator tank tank field; F: laterite washing separating step.
Embodiment
As shown in Figure of description, major equipment of the present invention comprises thick liquid bath 1, crude liquor pump 2, leaf filter 3, filter cake groove 4, filter cake pump 5, seminal fluid groove 6, seminal fluid pump 7, vertical-disk filter 8, aluminum hydroxide slurry groove 9, horizontal disk filter 10 and rubber conveyer 11.
Wherein said thick liquid bath 1 is connected by crude liquor pump 2 with leaf filter 3, and the bottom of leaf filter 3 is connected with filter cake groove 4, and top is connected with seminal fluid groove 6, and the bottom of seminal fluid groove 6 is provided with seminal fluid pump 7, and seminal fluid pump 7 is connected with vertical plate formula filter 8; Described filter cake groove 6 is arranged on ▽ 5.000 planes, and the bottom of filter cake groove 4 is provided with filter cake pump 5; Described aluminum hydroxide slurry groove 9 is arranged on horizontal disk filter 10 tops, and horizontal disk filter 10 is connected with rubber conveyer 11.
Liquid bath 1 is interior through crude liquor pump 2, sends into leaf filter 3 thick for the thick liquid A that red mud separating, washing obtains, after the leaf filter, obtain seminal fluid, seminal fluid is sent into vertical-disk filter 8 through seminal fluid pump 7 seminal fluid groove 6 is interior, directly together with aluminium hydroxide crystal seed and crystal seed attached liquid, through the chute of vertical-disk filter 8, deliver to decompose in first groove B and decompose, from the aluminum hydroxide slurry C that decomposes underflow, from flowing to aluminum hydroxide slurry groove 9, after buffering, certainly flow to horizontal plate formula filter 10; Come the aluminum hydroxide slurry D of self-decomposition overflow to enter mother liquor that vertical-disk filter 8 obtains from flowing to evaporator tank tank field E, the filter cake that leaf filter 3 leaves filters obtain enters the filter cake groove 4 on ▽ 5.000 planes, delivers to laterite washing separating step F through filter cake pump 5.
Claims (2)
1. the integrated gasifying device of the filtration of an alumina producing Bayer process, is characterized in that comprising thick liquid bath, crude liquor pump, leaf filter, filter cake groove, filter cake pump, seminal fluid groove, seminal fluid pump, vertical-disk filter, aluminum hydroxide slurry groove, horizontal disk filter and rubber conveyer; Wherein said thick liquid bath is connected by crude liquor pump with leaf filter, and the bottom of leaf filter is connected with the filter cake groove, and top is connected with the seminal fluid groove, and the bottom of seminal fluid groove is provided with the seminal fluid pump, and the seminal fluid pump is connected with vertical-disk filter; Described filter cake groove is arranged on ▽ 5.000 planes, and the bottom of filter cake groove is provided with the filter cake pump; Described aluminum hydroxide slurry groove is arranged on horizontal disk filter top, and horizontal disk filter is connected with rubber conveyer.
2. the method that adopts the integrated gasifying device of filtration of alumina producing Bayer process claimed in claim 1 to filter is characterized in that carrying out according to following steps:
The thick liquid that red mud separating, washing obtains is sent into leaf filter through crude liquor pump in thick liquid bath, after the leaf filter, obtain seminal fluid, seminal fluid is pumped into vertical-disk filter through seminal fluid in the seminal fluid groove, directly together with aluminium hydroxide crystal seed and crystal seed attached liquid, through the chute of vertical-disk filter, deliver to decompose in first groove and decompose, from the aluminum hydroxide slurry that decomposes underflow, from flowing to the aluminum hydroxide slurry groove, after buffering, certainly flow to horizontal plate formula filter; Come the aluminum hydroxide slurry of self-decomposition overflow to enter mother liquor that vertical-disk filter obtains from flowing to the evaporator tank tank field, the filter cake that the filter of leaf filter leaf obtains enters the filter cake groove on ▽ 5.000 planes, is pumped to the laterite washing separating step through filter cake.
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| CN201310382435.2A CN103408048B (en) | 2013-08-29 | 2013-08-29 | Filtration-integration integrated plant and method for producing aluminum oxide by Bayer process |
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| CN201310382435.2A CN103408048B (en) | 2013-08-29 | 2013-08-29 | Filtration-integration integrated plant and method for producing aluminum oxide by Bayer process |
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| CN103408048B CN103408048B (en) | 2015-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106276995A (en) * | 2015-06-25 | 2017-01-04 | 沈阳铝镁设计研究院有限公司 | A kind of synthetic filter process in aluminum oxide production process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592700B (en) * | 2018-12-18 | 2021-07-13 | 广西华银铝业有限公司 | Method for continuously operating decomposition and grading production of alumina plant |
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| EP0166053A1 (en) * | 1984-05-24 | 1986-01-02 | KAISER ALUMINUM & CHEMICAL CORPORATION | Improvements in the bayer process production of alumina hydrate |
| US5387405A (en) * | 1992-03-25 | 1995-02-07 | Nalco Chemical Company | Bayer liquor polishing |
| CN201324566Y (en) * | 2008-12-03 | 2009-10-14 | 沈阳铝镁设计研究院 | Leaf filtering system |
| CN101708859A (en) * | 2009-12-02 | 2010-05-19 | 贾启 | Process for Bayer process aluminum oxide production by replacing carbide slag with lime |
| CN102515226A (en) * | 2011-12-22 | 2012-06-27 | 东北大学设计研究院（有限公司） | Decomposition and filtration method during alumina production process |
| CN103043693A (en) * | 2013-01-17 | 2013-04-17 | 信发集团有限公司 | Bayer-method-based aluminum oxide production system using carbide slag instead of lime |
| CN203159241U (en) * | 2013-01-17 | 2013-08-28 | 信发集团有限公司 | Comprehensive red mud treatment equipment |
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2013
- 2013-08-29 CN CN201310382435.2A patent/CN103408048B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0166053A1 (en) * | 1984-05-24 | 1986-01-02 | KAISER ALUMINUM & CHEMICAL CORPORATION | Improvements in the bayer process production of alumina hydrate |
| US5387405A (en) * | 1992-03-25 | 1995-02-07 | Nalco Chemical Company | Bayer liquor polishing |
| CN201324566Y (en) * | 2008-12-03 | 2009-10-14 | 沈阳铝镁设计研究院 | Leaf filtering system |
| CN101708859A (en) * | 2009-12-02 | 2010-05-19 | 贾启 | Process for Bayer process aluminum oxide production by replacing carbide slag with lime |
| CN102515226A (en) * | 2011-12-22 | 2012-06-27 | 东北大学设计研究院（有限公司） | Decomposition and filtration method during alumina production process |
| CN103043693A (en) * | 2013-01-17 | 2013-04-17 | 信发集团有限公司 | Bayer-method-based aluminum oxide production system using carbide slag instead of lime |
| CN203159241U (en) * | 2013-01-17 | 2013-08-28 | 信发集团有限公司 | Comprehensive red mud treatment equipment |
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| 史玉娟等: "拜耳法生产砂状氧化铝种子分解工序工艺", 《有色矿冶》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106276995A (en) * | 2015-06-25 | 2017-01-04 | 沈阳铝镁设计研究院有限公司 | A kind of synthetic filter process in aluminum oxide production process |
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Inventor after: Wang Ning Inventor after: Xu Wenqiang Inventor after: Yang Ying Inventor after: Shi Yujuan Inventor after: Luo Min Inventor before: Wang Ning Inventor before: Xu Wenqiang Inventor before: Yang Ying Inventor before: Shi Yujuan |
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Effective date of registration: 20170323 Address after: 110016 Heping District, Liaoning, Shenyang and Qing Street, No. 70 Patentee after: Northeast University Design & Research Institute Co., Ltd. Patentee after: Guizhou galuminium Aluminium Co. Ltd. Address before: 110006 Antu street, Heping District, Liaoning, China, No. 8, No. Patentee before: Northeast University Design & Research Institute Co., Ltd. |
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