CN203159241U - Comprehensive red mud treatment equipment - Google Patents
Comprehensive red mud treatment equipment Download PDFInfo
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- CN203159241U CN203159241U CN 201320024711 CN201320024711U CN203159241U CN 203159241 U CN203159241 U CN 203159241U CN 201320024711 CN201320024711 CN 201320024711 CN 201320024711 U CN201320024711 U CN 201320024711U CN 203159241 U CN203159241 U CN 203159241U
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- red mud
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- treatment equipment
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Abstract
The utility model discloses comprehensive red mud treatment equipment which comprises a first vertical disc filter, a filter cake mixing tank, an ore pulp preparation tank, a diaphragm pump, a dissolution device group, a diluting tank, a settling separation tank, a crude liquid tank, a leaf filter, a stock solution evaporating tank, an evaporator, a plate type cooler, an alkali liquor stirring tank, a second vertical disc filter and a filter cake mixing tank, wherein the filtrate outlet of the first vertical disc filter is connected with the settling separation tank through a filtrate tank; the bottom flow outlet of the settling separation tank is connected with a washing settlement tank; and an overflow outlet is connected with the crude liquid tank. The comprehensive red mud treatment equipment has the beneficial effects that the environmental risk caused by stack of lots of high-alkalinity Bayer process red mud is eliminated. The valuable metals in the red mud are recycled, so that the resources are fully utilized, the pollution of the red mud on the land and water quality is reduced, and the land occupied by stacking the red mud is saved.
Description
Technical field
The utility model belongs to the alumina producing field, relates to a kind of red mud comprehensive treatment equipment.
Background technology
Red mud is the residue that bauxite produces when highly basic leaches in the aluminum oxide production process, is rich in ferric oxide in the residue and presents redness, therefore is referred to as red mud.Contain a lot of metals and non-metallic element in the red mud, reclaim the valuable metal in the red mud and use it for the production of multiple material, can reach the purpose that turns waste into wealth.Red mud also can be used for doing new wall material, casting resin, pavior, development black glass material, produces cement, makes siliceous fertilizer, prepares material of construction such as concrete, terra-cotta, devitrified glass.
Summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, provides that a kind for the treatment of effect is good, easy to use, the red mud comprehensive treatment equipment of efficent use of resources.
The utility model is achieved by the following technical solution:
Red mud comprehensive treatment equipment of the present utility model, its special character is: comprise first vertical-disk filter, filter cake tempering tank, ore pulp Preparation tank, surge pump, digester group, dilution trap, settlement separate groove, thick liquid bath, leaf filter, vaporizing raw liquor groove, vaporizer, board-like cooler, alkali lye steel basin, second vertical-disk filter and the filter cake tempering tank that connect successively, wherein, the filtrate outlet of first vertical-disk filter connects the sedimentation hot water tank through filtrate receiver, the underflow outlet of settlement separate groove connects washing settling groove, and the overflow outlet connects thick liquid bath.
Described digester group comprises cannula primary heater, ore pulp snubber, insulation jar and the slip flash-pot that connects successively.
The beneficial effects of the utility model are to produce products such as aluminum oxide, industrial solid sodium chlorate, liquid caustic soda, building materials raw material.This equipment can make Al in the red mud
2O
3Extraction rate reached to 60 ~ more than 90%; Fe
3O
4Extraction yield is up to more than 80%; Carry behind the alkali Na in the residual residue
2The percentage composition of O reaches below 1%, and residue is low because containing alkali, can 100% as building up fields or make building materials prepared using such as cement, eliminated that the high Bayer process red mud of alkalinity is stored up in a large number and the environmental risk that produces.In reclaiming red mud valuable metal, resource is fully used in, reduced the soil that red mud piling up takies, avoided the pollution of red mud piling up to soil and water body, economy, environment and obvious social benefit.
Description of drawings
Fig. 1 is use process flow diagram of the present utility model.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
Red mud comprehensive treatment equipment of the present utility model, comprise first vertical-disk filter, filter cake tempering tank, ore pulp Preparation tank, surge pump, digester group, dilution trap, settlement separate groove, thick liquid bath, leaf filter, vaporizing raw liquor groove, vaporizer, board-like cooler, alkali lye steel basin, second vertical-disk filter and the filter cake tempering tank that connect successively, wherein, the filtrate outlet of first vertical-disk filter connects the sedimentation hot water tank through filtrate receiver, the underflow outlet of settlement separate groove connects washing settling groove, and the overflow outlet connects thick liquid bath.
Red mud comprehensive treatment equipment of the present utility model, its working process is as follows:
(1) Bayer red mud filters and the ore pulp preparation:
Send into 120m by the last underflow that sedimentation comes
2Vertical-disk filter, filter cake in funnel directly falls into the filter cake tempering tank, the circulation alkali liquor that comes with the additive of being sent here by rotary conveyor, by evaporation, and liquid caustic soda mixes according to certain proportioning, filtrate through filtrate receiver with pumped back west factory sedimentation hot water tank.Material fully stirs with being pumped into the ore pulp Preparation tank through the filter cake tempering tank.Ore pulp fully mixes the back discharging.
(2) pyroprocessing:
The ore pulp that the ore pulp Preparation tank is sent here is sent into high-pressure diaphragm pump by feeding pump, enters the digester group.The digester group comprises cannula primary heater, ore pulp snubber, insulation jar and slip flash-pot.Slip is used 5.5MPa again with the secondary steam of corresponding flash-pot, enter the ore pulp snubber after 14 grades of cannula primary heater indirect heating to 190 ℃, and 470 ℃ saturated live steam direct heating is to 300 ℃ of stripping temperature.Be heated to ore pulp after the stripping temperature and enter insulation in 22 insulations jar.
Slip after the stripping enter 10 grades of slip self-evaporatint n.s step by step flash distillation be cooled to 120 ℃, ore pulp enters dilution trap after the processing of discharging from the slip flash-pot, adds red mud wash liquor simultaneously slip is diluted.The dilution slurries are delivered to the red mud separation circuit with discharging pump.
Live steam condensed water after testing after, qualified water is sent power plant back to, the time condensation water of defective water and slip flash-pots at different levels is sent to the washing red mud.
(3) red-mud settlement separating, washing
Solid content 100 g/L, temperature are 105 ℃ dilution slurries, with the efficient settlement separate groove that is pumped to Φ 20 * 22m, add the certain amount of fluid flocculation agent and carry out the red mud separation, and solid content is that the overflow of 0.5g/L is that thick liquid advances thick liquid bath by the pumping leaf filtering workshop section.Liquid-solid ratio is that 1.5 underflow mixes in the waterpower tempering tank with secondary cleaning water, through being pumped to washing settling groove.
1 filtering process of 4 sedimentations is adopted in washing, and rinse bath all adopts Φ 20 * 22m deep-cone settling groove.To the red mud wash water of 98 ℃ of final stage washing settling groove addings, behind 4 counter flow washings, the last red mud send red mud filter press to carry out solid-liquid separation, reclaims the Na in the wastewater from red mud
2O and Al
2O
3Reduce the attached liquid amount that effluxes red mud, the additive that the red mud after the filtration is made material of construction or manufacture of cement all consumes.
Primary wash liquor is through pumping stripping workshop section, the attached alkali loss requirement≤5kg-Na of red mud
2The dried red mud of O/t-.
(4) fine filtration of sodium aluminate solution
The solid content of sending here from red-mud settlement separating, washing operation is that the thick liquid of 0.5g/L enters the leaf filter feeding trough, adds a certain amount of lime as flocculating aids in groove.The thick liquid that contains flocculating aids is sent into DIASTAR 306m with governor impeller
2Vertical leaf is removed most of solid (filter cake) in the solution by leaf filter, and filter cake recoils to the filter cake groove with filtrate, with being pumped to the laterite washing subsider.The refined liquid of solid content≤15mg enters the seminal fluid groove and uses pumping toward evaporization process.
(5) mother liquid evaporation, sodium aluminate Crystallization Separation, alkali liquor preparing
The refined liquid of being sent here by the essence filter enters the vaporizing raw liquor groove, and vaporizing raw liquor is by being pumped to the V single-effect evaporator.Through V-IV-III-II-I single-effect evaporator adverse current heating evaporation (I single-effect evaporator with 0.6MPa live steam indirect heating) step by step.The discharging of I single-effect evaporator is through one, two, three flash-pot flash distillation, discharging strength of solution 550 g/L(Na after three grades of self-evaporatint n.s
2O
k), the alkali lye steel basin is delivered in its discharging behind board-like cooler.Stirring is separated out after the crystallization with being pumped to sodium aluminate Crystallization Separation vertical-disk filter and whizzer.Separate after filtration, the sodium aluminate crystallization filter cake packing export trade of whizzer, the sodium aluminate crystallization filter cake of vertical-disk filter directly falls into the filter cake tempering tank, mixes with aluminum hydroxide wash liquor from the product filtration washing, adds decomposition of crystal seed with being pumped to decomposer.Decomposing rear slurry with the decomposing rear slurry of normal oxidation aluminium Production Flow Chart carry out that aluminium hydroxide separates, washing and roasting, produce qualified sandy alumina product.Mother liquid evaporation (filtrate) send alkali liquor preparing preparation circulating mother liquor, allocates qualified circulating mother liquor and filters the filter cake groove with being pumped to Bayer red mud.
The vapo(u)rization system water of condensation after testing after, qualified water of condensation advances qualified tank, defective water of condensation advances defective tank.Qualified water is sent the thermal power plant boiler room, and defective water is delivered to laterite washing operation hot water tank.
Claims (2)
1. red mud comprehensive treatment equipment, it is characterized in that: comprise first vertical-disk filter, filter cake tempering tank, ore pulp Preparation tank, surge pump, digester group, dilution trap, settlement separate groove, thick liquid bath, leaf filter, vaporizing raw liquor groove, vaporizer, board-like cooler, alkali lye steel basin, second vertical-disk filter and the filter cake tempering tank that connect successively, wherein, the filtrate outlet of first vertical-disk filter connects the sedimentation hot water tank through filtrate receiver, the underflow outlet of settlement separate groove connects washing settling groove, and the overflow outlet connects thick liquid bath.
2. red mud comprehensive treatment equipment according to claim 1 is characterized in that: the digester group comprises the cannula primary heater that connects successively, ore pulp snubber, insulation jar and slip flash-pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024711 CN203159241U (en) | 2013-01-17 | 2013-01-17 | Comprehensive red mud treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024711 CN203159241U (en) | 2013-01-17 | 2013-01-17 | Comprehensive red mud treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203159241U true CN203159241U (en) | 2013-08-28 |
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ID=49020444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320024711 Expired - Lifetime CN203159241U (en) | 2013-01-17 | 2013-01-17 | Comprehensive red mud treatment equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN203159241U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408048A (en) * | 2013-08-29 | 2013-11-27 | 东北大学设计研究院（有限公司） | Filtration-integration integrated plant and method for producing aluminum oxide by Bayer process |
| CN104528785A (en) * | 2014-12-11 | 2015-04-22 | 广西华银铝业有限公司 | Method for improving settling separation performance of bauxite slurry |
| CN109250737A (en) * | 2017-07-12 | 2019-01-22 | 中国科学院过程工程研究所 | A kind of method that Bayer process red mud mentions aluminium |
-
2013
- 2013-01-17 CN CN 201320024711 patent/CN203159241U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408048A (en) * | 2013-08-29 | 2013-11-27 | 东北大学设计研究院（有限公司） | Filtration-integration integrated plant and method for producing aluminum oxide by Bayer process |
| CN103408048B (en) * | 2013-08-29 | 2015-02-11 | 东北大学设计研究院（有限公司） | Filtration-integration integrated plant and method for producing aluminum oxide by Bayer process |
| CN104528785A (en) * | 2014-12-11 | 2015-04-22 | 广西华银铝业有限公司 | Method for improving settling separation performance of bauxite slurry |
| CN109250737A (en) * | 2017-07-12 | 2019-01-22 | 中国科学院过程工程研究所 | A kind of method that Bayer process red mud mentions aluminium |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |