CN100439251C - Composite red mud depositing separating washing method and tank - Google Patents
Composite red mud depositing separating washing method and tank Download PDFInfo
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- CN100439251C CN100439251C CNB2004101554345A CN200410155434A CN100439251C CN 100439251 C CN100439251 C CN 100439251C CN B2004101554345 A CNB2004101554345 A CN B2004101554345A CN 200410155434 A CN200410155434 A CN 200410155434A CN 100439251 C CN100439251 C CN 100439251C
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Abstract
The present invention discloses an integrative red mud deposition and separation washing method and a tank. The method comprises: a sodium aluminate solution and red mud are separated from diluted slurry by deposition; the red mud is deposited and washed with hot water to remove attached alkali in the red mud; after the red mud reaches a standard, the red mud is discharged to a red mud dam to be stacked and stored. Flat bottom deposition tanks are adopted by deposition and separation, and high efficient deposition tanks are adopted by hot water washing. The structure of the tank comprises flat bottom deposition tanks and high efficient deposition tanks. The flat bottom deposition tanks are adopted by a separation and deposition tank and a public standby deposition tank, and a plurality of high efficient deposition tanks are adopted by washing deposition tanks. The present invention sufficiently combines the advantages of the existing two kinds of deposition tanks. The present invention not only ensures stable production, but also can directly discharge red mud. Production cost is greatly lowered, and the present invention ensures that an integral production system reaches the optimization effect in all respects.
Description
Technical field:
The present invention relates to the technology and the groove of red-mud settlement separating, washing in a kind of alumina producing.
Background technology:
In the production engineering of aluminum oxide, slip after the stripping is after dilution, to carry out settlement separate through subsider, red mud and sodium aluminate solution are separated, the sodium aluminate solution that overflows obtains alumina product through follow-up workshop section, the red mud of separating then will carry out backflush with hot water, reduces alkali content wherein, reaches to be discharged into the red mud dam behind the environmental protection standard and to store up.3～5 washing settling grooves of existing laterite washing process using wash red mud, with one or more separation tank material is separated, simultaneously in order to clear up and to overhaul to separation tank or washing settling groove, a sedimentation is set again is equipped with subsider as public affairs, promptly can be used as separation tank and can be used as washing settling groove again, and existing red-mud settlement separates or the equipment of washing to adopt be a kind of in flat subsider or the high rate settling.
Flat subsider diameter is bigger, take up an area of big, corresponding investment is also big, its advantage is that volume is big, cleaning is convenient, flocculation agent addition few (being less than the dried red mud of 25g/t), when occurring in the process of alumina producing, can be good at cushioning, can guarantee the continous-stable operation that full factory produces than great fluctuation process or stripping workshop section blowing; Shortcoming is that residence time of material is long, and hydrolysising loss is big, and red mud also needs to carry out filtration washing one time with red mud filter when adopting dry method to store up, could qualified discharge.
The high rate settling diameter is less, takes up an area of to lack, and corresponding investment is also little, its advantage residence time of material is short, and hydrolysising loss is little, and the red mud after the washing need not wash after filtration, just can directly discharge, therefore can reduce a large amount of operator, reduce working cost greatly; Shortcoming is that volume is little, flocculation agent addition many (more than the dried red muds of 50g/t), and operation and maintenance are complicated, can not well cushion when bigger fluctuation or stripping blowing occurring in process of production, with the continous-stable operation that guarantees to produce.
Summary of the invention:
The objective of the invention is to: a kind of composite red mud depositing separating washing method is provided, can be in conjunction with the advantage of two kinds of subsiders, both reduced the hydrolysising loss of aluminum oxide, can save red mud filter workshop section again, save a large amount of construction costs and production run expense and manpower, can also guarantee the continuous smooth running of producing simultaneously.
Another object of the present invention is to: provide a kind of composite red mud settlement separate and rinse bath, adopt two kinds of different subsiders to carry out settlement separate to slip and washing, the advantage in conjunction with the two achieves the above object.
The present invention be achieved in that it comprise will dilution slip go out aluminic acid and receive solution and red mud through settlement separate, aluminic acid is received solution and is obtained the aluminum oxide finished product through follow-up workshop section, red mud carries out the sedimentation washing with hot water, remove wherein appended alkali, being discharged into the red mud dam after up to standard stores up, the flat subsider of settlement separate employing, high rate settling is adopted in hot wash.
Structure of the present invention: it comprises flat subsider and high rate settling, separation tank (1) and the public subsider (2) that is equipped with adopt flat subsider, use pipe connection between the two, the public subsider (2) that is equipped with is by pipe connection washing settling groove (3), washing settling groove (3) adopts several high rate settlings, uses pipe connection each other.
Owing to adopted above-mentioned technology, the present invention compares with prior art, fully combine the advantage of two kinds of subsiders, not only guarantee the steady of production, and can directly red mud be discharged, reduced the filtering workshop section of red mud filter, reduced production cost greatly, guaranteed that whole system produces system and reaches optimized effect from each side such as construction investment, running maintenance, production are stable.
Description of drawings:
Accompanying drawing 1 is a schematic flow sheet of the present invention.
Embodiment:
Embodiments of the invention: the present invention adopts two flat subsiders respectively as separation tank (1) and the public subsider (2) that is equipped with, the back connects four high rate settlings as washing settling groove (3), the slip of stripping is through after diluting, entering separation tank (1) separates, the aluminic acid that overflows is received solution and is delivered to the processing of follow-up workshop section, the red mud that underflow comes out enters washing settling groove (3) and washs, directly delivering to the red mud dam through the red mud after the washing stores up, when separation tank (1) or washing settling groove (3) need overhaul, the public subsider (2) that is equipped with then substituted their work respectively.
Claims (2)
1. composite red mud depositing separating washing method, it is characterized in that: it comprise will dilution slip go out sodium aluminate solution and red mud through settlement separate, sodium aluminate solution obtains the aluminum oxide finished product through follow-up workshop section, red mud carries out the sedimentation washing with hot water, remove wherein appended alkali, be discharged into the red mud dam after up to standard and store up, the flat subsider of settlement separate employing, high rate settling is adopted in hot wash.
2. the subsider of a composite red mud depositing separating washing method as claimed in claim 1, it comprises flat subsider and high rate settling, it is characterized in that: separation tank (1) and the public subsider (2) that is equipped with adopt flat subsider, use pipe connection between the two, the public subsider (2) that is equipped with is by pipe connection washing settling groove (3), washing settling groove (3) adopts several high rate settlings, uses pipe connection each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101554345A CN100439251C (en) | 2004-11-05 | 2004-11-05 | Composite red mud depositing separating washing method and tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101554345A CN100439251C (en) | 2004-11-05 | 2004-11-05 | Composite red mud depositing separating washing method and tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1623902A CN1623902A (en) | 2005-06-08 |
| CN100439251C true CN100439251C (en) | 2008-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB2004101554345A Active CN100439251C (en) | 2004-11-05 | 2004-11-05 | Composite red mud depositing separating washing method and tank |
Country Status (1)
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| CN (1) | CN100439251C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101759214B (en) * | 2008-12-25 | 2011-12-21 | 中国铝业股份有限公司 | Method for filtering separation of sodium aluminate pulp |
| CN105217903B (en) * | 2014-06-26 | 2017-11-10 | 沈阳铝镁设计研究院有限公司 | A kind of equipment configuration method of red- mud settlement and separation washing procedure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104039A (en) * | 1986-06-17 | 1987-12-30 | 郑州铝厂 | Produce the red mud separating technique in the alumina process |
| US5387405A (en) * | 1992-03-25 | 1995-02-07 | Nalco Chemical Company | Bayer liquor polishing |
| CN1370741A (en) * | 2002-03-26 | 2002-09-25 | 贵州铝厂 | Red clay separation process for alumina sintering production |
-
2004
- 2004-11-05 CN CNB2004101554345A patent/CN100439251C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104039A (en) * | 1986-06-17 | 1987-12-30 | 郑州铝厂 | Produce the red mud separating technique in the alumina process |
| US5387405A (en) * | 1992-03-25 | 1995-02-07 | Nalco Chemical Company | Bayer liquor polishing |
| CN1370741A (en) * | 2002-03-26 | 2002-09-25 | 贵州铝厂 | Red clay separation process for alumina sintering production |
Non-Patent Citations (6)
| Title |
|---|
| φ42×6m沉降槽在拜耳法赤泥分离洗涤系统的实践及改进. 杨权平等.轻金属，第8期. 2004 |
| φ42×6m沉降槽在拜耳法赤泥分离洗涤系统的实践及改进. 杨权平等.轻金属，第8期. 2004 * |
| φ42m平底钢索扭矩沉降槽设备、工艺特点简介. 侯炳毅等.山西冶金，第1期. 2004 |
| φ42m平底钢索扭矩沉降槽设备、工艺特点简介. 侯炳毅等.山西冶金，第1期. 2004 * |
| 高效沉降槽开发利用的初步评价. 樊相如等.湖南有色金属，第11卷第4期. 1995 |
| 高效沉降槽开发利用的初步评价. 樊相如等.湖南有色金属，第11卷第4期. 1995 * |
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| CN1623902A (en) | 2005-06-08 |
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Owner name: GUIYANG ALUMINUM AND MAGNESIUM DESIGN INSTITUTE CO Free format text: FORMER NAME: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
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Address after: 550081 Guiyang Province, Jinyang New District, Zhu Zhu Road, No. 2 Patentee after: Guiyang Aluminum & Magnesium Design Institute Co., Ltd. Address before: 550004 No. 208, Beijing Road, Guiyang, Guizhou Patentee before: Guiyang Aluminium and Magnesium Design Inst. |