CN101574700A - Method for processing alumina red-mud settlement scrap by Bayer process - Google Patents
Method for processing alumina red-mud settlement scrap by Bayer process Download PDFInfo
- Publication number
- CN101574700A CN101574700A CNA2009100860666A CN200910086066A CN101574700A CN 101574700 A CN101574700 A CN 101574700A CN A2009100860666 A CNA2009100860666 A CN A2009100860666A CN 200910086066 A CN200910086066 A CN 200910086066A CN 101574700 A CN101574700 A CN 101574700A
- Authority
- CN
- China
- Prior art keywords
- red
- settlement
- mud
- overflow
- trough
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000004131 Bayer process Methods 0.000 title claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000006210 lotion Substances 0.000 claims abstract description 4
- 206010039509 Scab Diseases 0.000 claims description 8
- 238000000151 deposition Methods 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to a method for processing alumina red-mud settlement scrap by a Bayer process, which is characterized in that the process comprises the following steps of: arranging a settlement trough mud in a pulpifier added beside a flat base settlement trough; adding a lotion for pulpification in the production process of the alumina, thus obtaining a mixed red-mud slurry; separating the red-mud slurry and scaring blocks through a rotary screen by the overflowing of the pulpifier; manually removing the scaring blocks for other treatment; flowing the red-mud slurry into an overflow trough used for the red-mud separation process by a chute; and pumping the overflow of the overflow trough into a final washing settlement trough by a centrifugal pump. The method can reduce the mud close to the settlement trough, ensures the normal removal of the settlement trough and improves the settlement field environment.
Description
Technical field
The present invention relates to a kind of method for processing alumina red-mud settlement scrap by Bayer process.
Background technology
In the Bayer process alumina producing, after the bauxite stripping, carry out sedimentation separation and obtain sodium aluminate solution and red mud.At present, the process of sedimentation separation adopts gravitational settling technology usually, and red mud send red mud filter after separation tank, washing settling groove are handled, and through operation after a while, in flat subsider deposition, clear up.At present, recycling is not done in the sedimentation deposition that cleans out usually, transports to the stockyard outward and recycles.Cause the cost of transportation height on the one hand, cause near a large amount of depositions of subsider on the other hand, have a strong impact on subsider cleaning duration and site environment health, thereby organization of production is formed restriction.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned prior art, provide a kind of and can solve effectively that near a large amount of depositions subsider, groove cleaning are long in time limit, the problem of site environment difference, reduce cost of transportation, the method for processing alumina red-mud settlement scrap by Bayer process of favourable organization of production.
The objective of the invention is to be achieved through the following technical solutions.
A kind of method for processing alumina red-mud settlement scrap by Bayer process, it is characterized in that processing procedure comprises the subsider deposition sent into sets up in the pulp device on flat subsider next door, the washing lotion that adds aluminum oxide production process is carried out pulp, be mixed into red mud slurry, the overflow of pulp device is isolated red mud slurry and the piece that scabs by roto-siofter, and the piece that scabs is manually walked in addition clearly to process; Red mud slurry is by the overflow launder of chute inflow red mud separation process, and the overflow launder overflow is squeezed into the last washing settling groove through centrifugal pump.
Method of the present invention can effectively reduce the conveying cost; Guarantee that subsider normally clears up; Improve the sedimentation site environment.
The specific embodiment
A kind of method for processing alumina red-mud settlement scrap by Bayer process, be the subsider deposition to be sent into set up in the pulp device on flat subsider next door, the washing lotion that adds aluminum oxide production process is carried out pulp, obtain mixing red mud slurry, the overflow of pulp device is isolated red mud slurry and the piece that scabs by roto-siofter, and the piece that scabs is manually walked in addition clearly to process; Red mud slurry is by the overflow launder of chute inflow red mud separation process, and the overflow launder overflow is squeezed into the last washing settling groove through centrifugal pump.
Embodiment
The waste material that the subsider cleaning is produced mixes with secondary cleaning water, by
The pulp of pulp device makes it fully to be mixed into red mud slurry, and the overflow of pulp device is isolated red mud slurry and the piece that scabs by roto-siofter, and the piece that scabs is manually walked in addition clearly to process; Red mud slurry flows into overflow launder by chute, squeezes into the last washing settling groove through centrifugal pump, carries out the recovery of aluminium oxide and alkali.
Claims (1)
1. method for processing alumina red-mud settlement scrap by Bayer process, it is characterized in that processing procedure comprises the subsider deposition sent into sets up in the pulp device on flat subsider next door, the washing lotion that adds aluminum oxide production process is carried out pulp, obtain mixing red mud slurry, the overflow of pulp device is isolated red mud slurry and the piece that scabs by roto-siofter, and the piece that scabs is manually walked in addition clearly to process; Red mud slurry is by the overflow launder of chute inflow red mud separation process, and the overflow launder overflow is squeezed into the last washing settling groove through centrifugal pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100860666A CN101574700B (en) | 2009-06-05 | 2009-06-05 | Method for processing alumina red-mud settlement scrap by Bayer process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100860666A CN101574700B (en) | 2009-06-05 | 2009-06-05 | Method for processing alumina red-mud settlement scrap by Bayer process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101574700A true CN101574700A (en) | 2009-11-11 |
| CN101574700B CN101574700B (en) | 2011-03-16 |
Family
ID=41269850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100860666A Active CN101574700B (en) | 2009-06-05 | 2009-06-05 | Method for processing alumina red-mud settlement scrap by Bayer process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101574700B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925841A (en) * | 2014-03-19 | 2015-09-23 | 沈阳铝镁设计研究院有限公司 | Low-moisture-content red mud slurry conveying method and preparation system |
| CN105174295A (en) * | 2015-10-15 | 2015-12-23 | 北京荣富鑫环保科技有限公司 | Dry-process electric-separation governing system for red mud |
| CN106076578A (en) * | 2016-07-20 | 2016-11-09 | 广西田东锦鑫化工有限公司 | A kind of decomposer scabs clearing and retrieving method and system thereof |
-
2009
- 2009-06-05 CN CN2009100860666A patent/CN101574700B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925841A (en) * | 2014-03-19 | 2015-09-23 | 沈阳铝镁设计研究院有限公司 | Low-moisture-content red mud slurry conveying method and preparation system |
| CN105174295A (en) * | 2015-10-15 | 2015-12-23 | 北京荣富鑫环保科技有限公司 | Dry-process electric-separation governing system for red mud |
| CN106076578A (en) * | 2016-07-20 | 2016-11-09 | 广西田东锦鑫化工有限公司 | A kind of decomposer scabs clearing and retrieving method and system thereof |
| CN106076578B (en) * | 2016-07-20 | 2018-03-09 | 广西田东锦鑫化工有限公司 | A kind of decomposer scabs clearing and retrieving method and its system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101574700B (en) | 2011-03-16 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |