CN101234772A - Separating method for producing sintering process high concentration chamotte exsolution red mud from aluminum oxide - Google Patents
Separating method for producing sintering process high concentration chamotte exsolution red mud from aluminum oxide Download PDFInfo
- Publication number
- CN101234772A CN101234772A CNA2007100776351A CN200710077635A CN101234772A CN 101234772 A CN101234772 A CN 101234772A CN A2007100776351 A CNA2007100776351 A CN A2007100776351A CN 200710077635 A CN200710077635 A CN 200710077635A CN 101234772 A CN101234772 A CN 101234772A
- Authority
- CN
- China
- Prior art keywords
- red mud
- concentration
- chamotte
- sintering process
- aluminum oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005245 sintering Methods 0.000 title claims abstract description 11
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 239000006210 lotion Substances 0.000 claims abstract description 8
- 239000011362 coarse particle Substances 0.000 claims abstract description 4
- 239000010419 fine particle Substances 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001948 sodium oxide Inorganic materials 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000002386 leaching Methods 0.000 abstract 3
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- 238000004090 dissolution Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000005189 flocculation Methods 0.000 abstract 1
- 230000016615 flocculation Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000003311 flocculating effect Effects 0.000 description 4
- 238000010517 secondary reaction Methods 0.000 description 4
- 206010039509 Scab Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000005432 seston Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a method for separating red mud by alumina high-concentration sinter leaching produced by a sintering process, which includes the following steps: slurry of the high-concentration sinter leaching with Al2O3 concentration of 130-165g/l is sent to a hydrocyclone to be carried out the cyclone classification; by controlling the feed pressure of the hydrocyclone at 0.20-0.25MPa, coarse-particle high solid-content slurry is excluded from an underflow outlet of the hydrocyclone; the slurry is discharged outward as the red mud after washed by adding lotion; fine-particle low solid-content slurry is sent to a high-efficiency settling tank; after settling separation, the underflow is discharged outward as the red mud after washed by adding the lotion; the overflow is sent to a crude liquor tank. In addition to the advantages of high-efficient flocculation settling separation process, the method is also characterized by reasonable flow, short separation time for a large part of the red mud, high dissolution rate of the alumina and sodium oxide, process applicable to high-concentration sinter leaching with the Al2O3 concentration of 130-165g/l, low energy consumption for evaporation and high cycle efficiency.
Description
Technical field:
The present invention relates to a kind of process of separating red mud of sintering process grog stripping slurries of alumina producing.
Technical background:
At present, both at home and abroad the sintering process red mud of producing aluminum oxide separates and generally all directly adopts the settlement separate Technology of efficient flocculating, this technology to have production capacity height, simple to operate, advantage such as operation and maintenance cost is low, and its fatal shortcoming is to be not suitable for handling Al
2O
3Concentration is greater than the high concentration chamotte stripping slurries of 130g/l, and deficiency such as have that velocity of separation is slow, the secondary reaction loss is big, aluminum oxide and sodium oxide solubility rate are low, only be suitable for handling the grog stripping slurries of lower concentration, become the bottleneck of restriction sintering process production development.In addition, the domestic commerical test research report that also has employing " swirler adds whizzer " and " swirler adds bag filter " technology to carry out sintering process grog stripping slurries sharp separation, advantages such as the red mud disengaging time is short though this technology has, the secondary reaction loss is little, aluminum oxide and sodium oxide solubility rate height, filtrate seston are low, the operation factor because of whizzer and bag filter is low eventually, energy consumption is high, red mud scabs is difficult to reason such as cleaning and does not carry out Industry Promotion always aborning and use.
Summary of the invention:
The objective of the invention is to: a kind of sintering process high concentration chamotte exsolution red mud separation method is provided, can adapts to Al
2O
3Concentration is the requirement of 130～165g/l high concentration chamotte dissolving-out process, and can reduce the secondary reaction loss, improves the solubility rate of aluminum oxide and sodium oxide.
The present invention is achieved in that
High concentration chamotte stripping slurries are sent into swirler carry out cyclone classification, by control swirler feed pressure, making coarse particles Gao Yin contain slurries gets rid of from the swirler underflow opening, add and efflux as red mud after washing lotion is washed, fine particle is low to be contained slurries admittedly and enters high rate settling, after flocculating settling separated, underflow added washing lotion and washs the back and efflux as red mud, and overflow enters thick liquid bath.
The swirler feed pressure is controlled at 0.20～0.25Mpa.
The present invention compared with prior art has the following advantages:
1, the every advantage that has kept the settlement separate technology of efficient flocculating.
2, flow process is reasonable, makes most of red mud disengaging time short, reduces the secondary reaction loss.
3, can handle Al
2O
3Concentration is the high concentration chamotte stripping slurries of 130～165 (grams per liters).
Description of drawings:
Accompanying drawing 1 is a process flow sheet of the present invention.
Embodiment:
Embodiments of the invention:
With concentration is that the grog stripping slurries of 130 (grams per liters) are sent into swirler and carried out cyclone classification, by controlling the swirler feed pressure at 0.20～0.25MPa, making coarse particles Gao Yin contain slurries gets rid of from the swirler underflow opening, add and efflux as red mud after washing lotion is washed, fine particle is low to be contained slurries admittedly and enters high rate settling, after flocculating settling separated, underflow added washing lotion and washs the back and efflux as red mud, and overflow enters thick liquid bath.
Claims (3)
1. separating method for producing sintering process high concentration chamotte exsolution red mud from aluminum oxide, it is characterized in that: grog stripping slurries are sent into swirler carry out cyclone classification, making the coarse particles height contain slurries admittedly gets rid of from the swirler underflow opening, add and efflux as red mud after washing lotion is washed, fine particle is low to be contained slurries admittedly and enters high rate settling, through settlement separate, underflow add washing lotion wash the back efflux as red mud, overflow enters thick liquid bath.
2. separating method for producing sintering process high concentration chamotte exsolution red mud from aluminum oxide according to claim 1 is characterized in that: the swirler feed pressure is controlled at 0.20～0.25Mpa.
3. separating method for producing sintering process high concentration chamotte exsolution red mud from aluminum oxide according to claim 1 is characterized in that: the grog stripping concentration of slurry of processing is 130～165 (grams per liters).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100776351A CN101234772A (en) | 2007-02-02 | 2007-02-02 | Separating method for producing sintering process high concentration chamotte exsolution red mud from aluminum oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100776351A CN101234772A (en) | 2007-02-02 | 2007-02-02 | Separating method for producing sintering process high concentration chamotte exsolution red mud from aluminum oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101234772A true CN101234772A (en) | 2008-08-06 |
Family
ID=39918715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100776351A Pending CN101234772A (en) | 2007-02-02 | 2007-02-02 | Separating method for producing sintering process high concentration chamotte exsolution red mud from aluminum oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101234772A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102432049A (en) * | 2011-09-30 | 2012-05-02 | 中国铝业股份有限公司 | Method for dissolving out clinker by sintering process |
| CN102718238A (en) * | 2012-06-21 | 2012-10-10 | 中国铝业股份有限公司 | Washing, settling and separation method for Bayer red mud |
| 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 |
| CN106830027A (en) * | 2017-02-20 | 2017-06-13 | 中国铝业股份有限公司 | A kind of Salt discharge method in Bayer process alumina producing |
-
2007
- 2007-02-02 CN CNA2007100776351A patent/CN101234772A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102432049A (en) * | 2011-09-30 | 2012-05-02 | 中国铝业股份有限公司 | Method for dissolving out clinker by sintering process |
| CN102718238A (en) * | 2012-06-21 | 2012-10-10 | 中国铝业股份有限公司 | Washing, settling and separation method for Bayer red mud |
| 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 |
| CN106830027A (en) * | 2017-02-20 | 2017-06-13 | 中国铝业股份有限公司 | A kind of Salt discharge method in Bayer process alumina producing |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080806 |