CN104556604A - Dealkalizing device for red mud - Google Patents
Dealkalizing device for red mud Download PDFInfo
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- CN104556604A CN104556604A CN201510057432.0A CN201510057432A CN104556604A CN 104556604 A CN104556604 A CN 104556604A CN 201510057432 A CN201510057432 A CN 201510057432A CN 104556604 A CN104556604 A CN 104556604A
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- cell body
- red mud
- pipe
- exchange column
- ion exchange
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses a dealkalizing device for red mud. The dealkalinzing device comprises a stirring tank and an ion exchange column, wherein the stirring tank comprises a tank body, a feeding hole, a stirrer and an overflowing pipe; the bottom part of the tank body is of an inverted conical structure, the top part of the tank body is of an inverted conical platform structure and the middle part of the tank body is of a hollow cylinder structure; the feeding hole is positioned at the top part of the tank body; the stirrer is arranged in a hollow cavity body of the tank body; the overflowing pipe is arranged at the middle part of the tank body; a pulp feeding pipe is arranged on the side wall of the inverted conical structure section of the lower part of the tank body; a discharging pipe and a butterfly valve are arranged at the bottom of the inverted conical structure section; the overflowing pipe is connected with an absorbing-liquid inlet pipe arranged at the top part of the ion exchange column by an overflowing valve, a water pump and a connecting pipeline; the ion exchange column comprises a column body, resin in a cavity body of the column body, a desorption-liquid outlet pipe arranged at the top of the column body, an absorbing-tail-liquid outlet pipe positioned at the bottom of the column body and a desorption-liquid inlet pipe connected with an agent water storage pool. The dealkalizing device disclosed by the invention has the advantages that the dealkalizing efficiency is high, the operation is simple, strong alkaline can be resisted, and integrated and continuous production of dealkalization, solid-liquid separation, concentration, enrichment and recovery of sodium ions can be realized.
Description
Technical field
The invention belongs to dealkalization device technical field, be specifically related to a kind of red mud dealkalization device.
Background technology
Red mud is the tailings produced in bauxite into alumina process, and wherein Bayer process red mud is a kind of strong basicity source of pollution, its mineral composition and chemical composition more complicated.Store up damming with red mud and not only can cause body of groundwater and soil pollution, simultaneously because the granularity of red mud is superfine, also can fly upward with the wind and cause atmospheric pollution, therefore such solid waste of process (Nan Xiangli must be taken effective measures, Zhang Tingan, Liu Yan etc. China's red mud comprehensive utilization is analyzed. process engineering journal, 2010,10 (S1): 23-28).In treating processes, dealkalize is indispensable operation.Current red mud dealkalization technique mainly comprises washing dealkalize technique, carbonization dealkalize technique, (the Zhang Guoli such as acidleach neutralisation dealkalize technique and lime dealkalize technique, Li Shaochun, Zhang Xinyuan etc. the research of Bayer process red mud washing dealkalize technique. Qingdao Technological University's journal, 2012,33 (4): 59-62; Wang Zhi, Han Minfang, Zhang Yihe etc. the wet method carbonization dealkalize technical study of Bayer process red mud. silicate is circulated a notice of, and 2013,32 (9): 1851-1855; Zhong Chen, Xia Jupei. Na in Bayer process red mud
+leaching experiment research. silicate circulate a notice of, 2013,32 (9): 2012-2015; Li Shaokang, Liang Chun come, Li Guangzhu etc. a kind of Bayer process red mud normal pressure dealkalization method, patent of invention, 2004; Luo Zhongtao, Xiao Yuling, Zhang Lei etc. the multiple stage circulation dealkalize of red mud slip and alkali collection treatment process. University Of Ji'nan's journal, 2013,4 (27): 369-372).The red mud raw material of these techniques all comes from red mud tailing dam, and directly process the red mud ore pulp of aluminium metallurgy factory discharge, after dealkalize, red mud ore pulp needs the solid-liquid separating equipments such as press filtration, and the equipment of dealkalize can not realize continuous seepage, and dealkalize sodium ion in liquor does not reclaim effectively.
Summary of the invention
Object of the present invention provides high, simple to operate, the resistance to highly basic of a kind of dealkalize efficiency, dealkalize-solid-liquid separation-enrichment method reclaim sodium ion integration and can realize quantity-produced red mud dealkalization device just for weak point existing in above-mentioned prior art.
Object of the present invention realizes by following technique measures:
Red mud dealkalization device of the present invention comprises steel basin and ion exchange column; Wherein said steel basin comprises that bottom is inversed taper platform structure in inverted cone-shaped structure, top, middle part is the cell body of hollow cylindrical structure, be positioned at the dosing mouth at cell body top, be arranged on the agitator in cell body hollow cavity, be arranged on the upflow tube at the middle part of cell body, the sidewall of the inverted cone-shaped structure section of cell body bottom is provided with the inlet pipe that the red mud pipe of discharging with Bayer process aluminium metallurgy factory is connected, the bottom of inverted cone-shaped structure section is provided with drainage conduit and butterfly valve; Described upflow tube is connected with the adsorption liquid inlet pipe being arranged on ion-exchange column top by surplus valve, water pump and corresponding connecting pipeline; Described ion exchange column comprises cylinder, the resin that can adsorb sodium ion be filled in cylinder cavity, arrange the connection high salt concentration pond at cylinder top stripping liquid outlet pipe, be positioned at adsorption tail liquid outlet pipe bottom cylinder and the stripping liquid inlet pipe being connected medicament tank.
The wall thickness of cell body described in the present invention is 120 ~ 150mm, and be made up of the metal material layer be coated in glass fiber reinforced plastic material, the outer wall of cell body is provided with lagging material, and the inner-wall spraying of cell body has alkali-resisting paint layer; Described agitator is prepared from by alkali resistance material.
The material of described ion exchange column cylinder is glass filament reinforced plastics, and wall thickness is 20 ~ 50mm, inner-wall spraying alkali-resisting paint layer.
The height of the frustum structure on the top of described cell body is 1/6 ~ 1/5 of cell body total height, and the back cut diameter of frustum structure is 1.2 ~ 1.5: 1 with lower port diameter ratio; The height of described cell body bottom inverted cone-shaped structure is 1/4 ~ 1/3 of cell body total height.
Described ion exchange column cylinder post footpath ratio be 3 ~ 5: 1(and the height of pillar and diameter ratio).
Beneficial effect of the present invention is as follows:
Because the present invention adopts, dosing mouth is set at cell body top, agitator adopts antidetonation and resistance to highly basic structure, outer wall is provided with lagging material, inside scribbles the coating of resistance to highly basic, middle layer arranges high-strength steel material and refractory glass fibre reinforced plastics, therefore has high temperature resistant, resistance to highly basic, anti-vibration and dealkalize rate high.The high temperature red mud ore pulp that alumina producer is discharged directly enters in steel basin by pastry mouth, is added the calcium oxide dealkalize materials such as carbide slag directly carry out liquid-solid fluidization dealkalize by dosing mouth, and accelerate solid-liquid contact and dealkalize process, red mud dealkalization rate reaches more than 92%.
Red mud is after steel basin dealkalize terminates, and dealkalize liquid passes through the use of upflow tube and water pump, is directly connected with ion exchange column adsorption liquid water inlet pipe, achieves dealkalize-solid-liquid separation-absorption integration.Ion exchange column cylinder top is provided with adsorption liquid inlet pipe and stripping liquid outlet pipe, cylinder bottom is provided with adsorption tail liquid outlet pipe and stripping liquid inlet pipe, achieve the successive processes of resin absorption-desorb sodium ion, alkali recovery is greater than 98%, and sodium at high concentration ion stripping liquid directly drains into high salt concentration pond.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Embodiment
The present invention is further described below with reference to embodiment (accompanying drawing):
As shown in Figure 1, red mud dealkalization device of the present invention comprises steel basin and ion exchange column, wherein said steel basin comprises bottom in inverted cone-shaped structure, top is inversed taper platform structure, middle part is the cell body (2) of hollow cylindrical structure, be positioned at the dosing mouth (6) at cell body (2) top, be arranged on the agitator (1) in cell body (2) hollow cavity, be arranged on the upflow tube (7) at the middle part of cell body (2), the sidewall of the inverted cone-shaped structure section of cell body (2) bottom is provided with the inlet pipe (3) that the red mud pipe of discharging with Bayer process aluminium metallurgy factory is connected, drainage conduit (5) and butterfly valve (4) is provided with in the bottom of inverted cone-shaped structure section, described upflow tube (7) is connected with the adsorption liquid inlet pipe being arranged on ion-exchange column top by surplus valve (8), water pump (9) and corresponding connecting pipeline, described ion exchange column comprises cylinder (12), the resin (11) that can adsorb sodium ion be filled in cylinder cavity, cylinder top is set connection high salt concentration pond stripping liquid outlet pipe (10), be positioned at adsorption tail liquid outlet pipe (14) bottom cylinder and the stripping liquid inlet pipe (13) being connected medicament tank, described adsorption tail liquid outlet pipe (14) external tank.
The wall thickness of cell body described in the present invention (2) is 120 ~ 150mm, be made up of the metal material layer be coated in glass fiber reinforced plastic material, the outer wall of cell body (2) is provided with lagging material, and the inner-wall spraying of cell body (2) has alkali-resisting paint layer; Described agitator (1) is prepared from by alkali resistance material.
The material of described ion exchange column cylinder (12) is glass filament reinforced plastics, and wall thickness is 20 ~ 50mm, inner-wall spraying alkali-resisting paint layer.
The height of the frustum structure on the top of described cell body (2) is 1/6 ~ 1/5 of cell body (2) total height, and the back cut diameter of frustum structure is 1.2 ~ 1.5: 1 with lower port diameter ratio; The height of described cell body (2) bottom inverted cone-shaped structure is 1/4 ~ 1/3 of cell body (2) total height.
Described ion exchange column cylinder (12) post footpath ratio be 3 ~ 5: 1(and the height of pillar and diameter ratio).
The high temperature red mud ore pulp that alumina producer is discharged by the present invention directly enters in the cell body (2) of steel basin by inlet pipe (3), add the calcium oxide dealkalize materials such as carbide slag by dosing mouth (6) and directly carry out liquid-solid fluidization dealkalize, accelerate solid-liquid contact and dealkalize process, red mud dealkalization rate reaches more than 92%.
After steel basin dealkalize terminates, dealkalize liquid passes through the use of upflow tube (7) and water pump (9), directly be connected with ion exchange column adsorption liquid inlet pipe, achieve dealkalize-solid-liquid separation-absorption integration, ion exchange column cylinder top is provided with adsorption liquid inlet pipe and stripping liquid outlet pipe (10), cylinder bottom is provided with adsorption tail liquid outlet pipe (14) and stripping liquid inlet pipe (13), achieve the successive processes of resin absorption-desorb sodium ion, alkali recovery is greater than 98%, and sodium at high concentration ion stripping liquid directly drains into high salt concentration pond.
Claims (7)
1. a red mud dealkalization device, is characterized in that: described dealkalization device comprises steel basin and ion exchange column, wherein said steel basin comprises bottom in inverted cone-shaped structure, top is inversed taper platform structure, middle part is the cell body (2) of hollow cylindrical structure, be positioned at the dosing mouth (6) at cell body (2) top, be arranged on the agitator (1) in cell body (2) hollow cavity, be arranged on the upflow tube (7) at the middle part of cell body (2), the sidewall of the inverted cone-shaped structure section of cell body (2) bottom is provided with the inlet pipe (3) that the red mud pipe of discharging with Bayer process aluminium metallurgy factory is connected, drainage conduit (5) and butterfly valve (4) is provided with in the bottom of inverted cone-shaped structure section, described upflow tube (7) is connected with the adsorption liquid inlet pipe being arranged on ion-exchange column top by surplus valve (8), water pump (9) and corresponding connecting pipeline, described ion exchange column comprises cylinder (12), the resin (11) that can adsorb sodium ion be filled in cylinder cavity, cylinder top is set connection high salt concentration pond stripping liquid outlet pipe (10), be positioned at adsorption tail liquid outlet pipe (14) bottom cylinder and the stripping liquid inlet pipe (13) being connected medicament tank.
2. red mud dealkalization device according to claim 1, it is characterized in that: the wall thickness of described cell body (2) is 120 ~ 150mm, be made up of the metal material layer be coated in glass fiber reinforced plastic material, the outer wall of cell body (2) is provided with lagging material, and the inner-wall spraying of cell body (2) has alkali-resisting paint layer.
3. red mud dealkalization device according to claim 1, is characterized in that: described agitator (1) is prepared from by alkali resistance material.
4. red mud dealkalization device according to claim 1, is characterized in that: the material of described ion exchange column cylinder (12) is glass filament reinforced plastics, and wall thickness is 20 ~ 50mm, inner-wall spraying alkali-resisting paint layer.
5. red mud dealkalization device according to claim 1, it is characterized in that: the height of the frustum structure on the top of described cell body (2) is 1/6 ~ 1/5 of cell body (2) total height, the back cut diameter of frustum structure is 1.2 ~ 1.5: 1 with lower port diameter ratio.
6. red mud dealkalization device according to claim 1, is characterized in that: the height of described cell body (2) bottom inverted cone-shaped structure is 1/4 ~ 1/3 of cell body (2) total height.
7. red mud dealkalization device according to claim 1, is characterized in that: described ion exchange column cylinder (12) post footpath ratio is 3 ~ 5: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510057432.0A CN104556604B (en) | 2015-02-04 | 2015-02-04 | A kind of red mud dealkalization device |
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| CN201510057432.0A CN104556604B (en) | 2015-02-04 | 2015-02-04 | A kind of red mud dealkalization device |
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| CN104556604A true CN104556604A (en) | 2015-04-29 |
| CN104556604B CN104556604B (en) | 2016-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251607A (en) * | 2015-11-10 | 2016-01-20 | 河南理工大学 | Red mud cross-flow dealkalizing device |
| CN108275707A (en) * | 2018-01-22 | 2018-07-13 | 云南文山铝业有限公司 | The method of sodium oxide molybdena in efficient removal alumina producing Bayer process red mud |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950003546B1 (en) * | 1990-12-21 | 1995-04-14 | 가부시끼가이샤 쟈파닉쿠 | Sewage treatment apparatus |
| CN101423318A (en) * | 2008-11-24 | 2009-05-06 | 中国长城铝业公司 | Red mud dealkalization method |
| CN102172598A (en) * | 2011-01-11 | 2011-09-07 | 天津城市建设学院 | Red mud slurrying multistage circulating dealkalization method |
| CN102206024A (en) * | 2011-03-11 | 2011-10-05 | 吴永贵 | Method for quickly dealkalizing red mud by using phosphogypsum |
| CN102234171A (en) * | 2010-04-30 | 2011-11-09 | 骆群 | Process for recycling alkali and synchronously producing cement by roasting red mud |
| CN102303941A (en) * | 2011-09-14 | 2012-01-04 | 中国科学院过程工程研究所 | Deep dealkalizing method of red mud in alumina factory |
| CN204434433U (en) * | 2015-02-04 | 2015-07-01 | 河南理工大学 | A kind of red mud dealkalization device |
-
2015
- 2015-02-04 CN CN201510057432.0A patent/CN104556604B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950003546B1 (en) * | 1990-12-21 | 1995-04-14 | 가부시끼가이샤 쟈파닉쿠 | Sewage treatment apparatus |
| CN101423318A (en) * | 2008-11-24 | 2009-05-06 | 中国长城铝业公司 | Red mud dealkalization method |
| CN102234171A (en) * | 2010-04-30 | 2011-11-09 | 骆群 | Process for recycling alkali and synchronously producing cement by roasting red mud |
| CN102172598A (en) * | 2011-01-11 | 2011-09-07 | 天津城市建设学院 | Red mud slurrying multistage circulating dealkalization method |
| CN102206024A (en) * | 2011-03-11 | 2011-10-05 | 吴永贵 | Method for quickly dealkalizing red mud by using phosphogypsum |
| CN102303941A (en) * | 2011-09-14 | 2012-01-04 | 中国科学院过程工程研究所 | Deep dealkalizing method of red mud in alumina factory |
| CN204434433U (en) * | 2015-02-04 | 2015-07-01 | 河南理工大学 | A kind of red mud dealkalization device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251607A (en) * | 2015-11-10 | 2016-01-20 | 河南理工大学 | Red mud cross-flow dealkalizing device |
| CN108275707A (en) * | 2018-01-22 | 2018-07-13 | 云南文山铝业有限公司 | The method of sodium oxide molybdena in efficient removal alumina producing Bayer process red mud |
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| CN104556604B (en) | 2016-04-06 |
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