CN201730100U - Damming device for mixing red mud with slag - Google Patents
Damming device for mixing red mud with slag Download PDFInfo
- Publication number
- CN201730100U CN201730100U CN2010202336851U CN201020233685U CN201730100U CN 201730100 U CN201730100 U CN 201730100U CN 2010202336851 U CN2010202336851 U CN 2010202336851U CN 201020233685 U CN201020233685 U CN 201020233685U CN 201730100 U CN201730100 U CN 201730100U
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- Prior art keywords
- red mud
- filtrate
- lime
- ash
- filter press
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- Expired - Lifetime
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Abstract
The utility model discloses a damming device for mixing red mud with slag. A feed pump (6) and a filter press (7) are arranged beside a slurry groove (1), wherein the feed pump (6) is connected with an outlet of the slurry groove (1) and an inlet of the filter press (7) respectively through pipelines; a filtrate groove (8) and a filtrate pump (9) are arranged beside the filter press (7), and the filtrate groove (8) is connected with a filtrate outlet of the filter press (7) and an inlet of the filtrate pump (9) respectively through pipelines; an outlet of the filtrate pump (9) is connected with a water return pipe (10); a filter cake discharge hopper of the filter press (7) is downwards connected with a belt conveyor (11), and the terminal of the belt conveyor (11) is connected in a stock dump; and the stock dump is internally provided with a bulldozer (13) and a compactor (14). A blender (2) is installed in the slurry groove (1). The slurry groove (1) is connected with a red mud conveying pipe a (3), a red mud conveying pipe b (4) and a slag conveying pipe (5).
Description
Technical field
The utility model relates to a kind of red mud lime-ash building dam by mixing device, belongs to the solid waste disposal technical field in the alumina producing.
Background technology
Alumina enterprise generally sets up steam power plant provides manufacturing process needed steam, and the waste residue of discharging in the alumina producing is a red mud, and the waste residue of discharging during steam power plant produces is a lime-ash.1 ton of product of the general every production of alumina producer is discharged 1.0～1.4 tons of red muds, and steam power plant's lime-ash discharge value accounts for 30～50% of coal consumption by the ature of coal difference.The red mud granularity is generally thinner, belongs to the silty clay class.Lime-ash fineness ratio red mud is thick slightly, belongs to the flour sand class.
Steam power plant's disposal of ash and slag mode is developing direction with the comprehensive utilization, and dry ash can be used as build the road roadbed and cement admixture.But in fact because condition restriction, part enterprise fails to fully utilize fully, still has the lime-ash of significant proportion need deliver to the lime-ash stockyard and deposits.Lime-ash is subjected to rainwater to soak grey pulp water that the back produces because index exceeding standards such as pH values, the interception of need taking to build a dam, carries out measure such as antiseep processing, invests often more than up to ten million units.The lime-ash stockyard is divided into two kinds of wet method and dry method, and the water/binder ratio that wet method is stored up is more than 10:1, and water is clarified back about 80% and returned steam power plant in the stockyard.It is with automobile the lime-ash of moisture content about 20% to be delivered to the lime-ash stockyard that dry method is stored up, during except that rainfall the stockyard generally do not have ponding.
Red mud for alumina plant can be partly as the cement admixture except that red mud from sintering process, and Bayer process red mud and most of red mud from sintering process all need be delivered to red mud dump and store up.Wherein carry moisture content storing up for wet method more than 75%～85%, the storing up for semidry method of moisture content 41%～47%.Moisture content is less than 35% store up for dry method.
Present alumina producer generally builds relatively independent red mud dump and the lime-ash stockyard is stored up red mud and lime-ash respectively.Storing up scheme has several.As Guangxi Hua Yin Chinalco, red mud adopts semidry method to store up, and lime-ash adopts automobile transportation dry method to store up, with the disposable storehouse of building of native stone material.The cost of transportation of lime-ash and the construction cost in stockyard are higher.As middle aluminium Guizhou branch company, red mud and lime-ash all adopt wet method to store up respectively, and the construction cost in stockyard is higher, has the risk of attached liquid leakage pollution environment.As middle aluminium Company Shanxi Branch, store up though red mud and lime-ash are entered in the different subregions in same seat stockyard, but still adopt the wet method discharging modes, the dam material of fill dam relies on red mud from sintering process, in case the sintering process flow process is because of the cost factor reduce or stop production, the stockyard will face the difficulty of dam material deficiency.
Have following shortcoming in the traditional disposal red mud and the technology of lime-ash: red mud and lime-ash are stored up respectively, invest bigger; Wet method is stored up arts demand and is built a dam with native stone or red mud from sintering process, has limitation on dam material is selected; Dry method is stored up and is adopted automobile transportation lime-ash in the technology, and cost of transportation is higher.
On the other hand, red mud (comprising pure Bayer process red mud) and lime-ash are under the low-water-content condition, has certain mechanical property, especially after the red mud lime-ash evenly mixes, the grain composition of red mud can improve, and can obtain better mechanical property after compacting, how to utilize this characteristic of red mud and lime-ash, the disposal costs of red mud and lime-ash in the saving alumina producing becomes the technical problem that must solve.
Summary of the invention
The technical problems to be solved in the utility model is, a kind of red mud lime-ash building dam by mixing device is provided, can saves the expense of building a dam and lime-ash freight, the moisture of guaranteeing to enter the stockyard simultaneously is less, reduce the influence of red mud and disposal of ash and slag, to overcome the deficiency that prior art exists to environment.
In order to solve described technical problem, device of the present utility model is taked following technical scheme: at slurry tank next door configuration feeding pump and filter press, feeding pump is connected with the outlet of slurry tank and the import of filter press respectively by pipeline; At filter press next door configuration filtrate receiver and filtrate pump, filtrate receiver is connected with the filtrate (liquid of filter press and the import of filtrate pump respectively by pipeline; The filtrate delivery side of pump takes back water pipe; Connect rubber conveyer under the cake of filter-press dump skip, the terminal point of rubber conveyer inserts in the stockyard; Bulldozer, compacting machine are arranged in the stockyard.
The capacity of slurry tank satisfies the flow that red mud is starched and lime-ash is starched of depositing 4～6 hours.
The capacity of filtrate receiver satisfies deposits 2～3 hours amount of filtrate.
Mixer is installed in the slurry tank.
Slurry tank connects red mud carrier pipe a, red mud carrier pipe b and lime-ash carrier pipe.
After this dam builds up, to insert slurry tank from the red mud slurry of plant area with red mud carrier pipe a and red mud carrier pipe b, for the factory that produces alumina with combination method, red mud carrier pipe a and red mud carrier pipe b carry Bayer process red mud slurry and red mud from sintering process slurry respectively, for the factory with pure producing aluminium oxide by bayer, red mud carrier pipe a and red mud carrier pipe b carry the Bayer process red mud slurry simultaneously.To insert slurry tank from the lime-ash slurry of plant area with the lime-ash carrier pipe.
The filtrate that produces in pressure-filtering process is collected with filtrate receiver, returns plant area's technological process with return pipe and reuse after the filtrate pump pressurization.
Compared with prior art, the red mud lime-ash building dam by mixing device that the utility model provides, both be applicable to the alumina producer of combination method technology, also be applicable to the alumina producer of pure bayer process, red mud and lime-ash have been realized in same stockyard, storing up simultaneously, and the red mud lime-ash as main dam material, will be built a dam and be stored up in same flow process and finish, and dam material no longer relies on native stone and red mud from sintering process.Near with wet method red mud and lime-ash being transported to the stockyard from plant area, blending filter cake is transported in the stockyard, has saved the freight of red mud and lime-ash,, reduced the influence of red mud and disposal of ash and slag environment simultaneously with attached liquid filtering outside the stockyard with rubber conveyer.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model, sectional drawing.
The specific embodiment
Embodiment of the present utility model: as shown in Figure 1, at slurry tank 1 next door configuration feeding pump 6 and filter press 7, feeding pump 6 is connected with the outlet of slurry tank 1 and the import of filter press 7 respectively by pipeline; At filter press 7 next doors configuration filtrate receiver 8 and filtrate pump 9, filtrate receiver 8 is connected with the filtrate (liquid of filter press 7 and the import of filtrate pump 9 respectively by pipeline; The outlet of filtrate pump 9 takes back water pipe 10; Connect rubber conveyer 11 under the filter cake dump skip of filter press 7, the terminal point of rubber conveyer 11 inserts in the stockyard; Bulldozer 13, compacting machine 14 are arranged in the stockyard.
The capacity of slurry tank 1 satisfies the flow that red mud is starched and lime-ash is starched of depositing 4～6 hours.
The capacity of filtrate receiver 8 satisfies deposits 2～3 hours amount of filtrate.
Mixer 2 is installed in the slurry tank 1.
Slurry tank 1 connects red mud carrier pipe a3, red mud carrier pipe b4 and lime-ash carrier pipe 5.
The work progress of building a dam of the present utility model is as follows:
Earlier construct initial dam high about 2m 12 at stockyard dam site place with native stone material.Begin then to build a dam: will in slurry tank 1, fully mix from the red mud slurry and the lime-ash slurry of plant area with mixer 2 with red mud lime-ash mixed material, send mixture slurry to filter press 7 with feeding pump 6 then and carry out press filtration, the blending filter cake after the press filtration is sent near the initial dam 12 in stockyard with rubber conveyer 11.Wait near the initial dam 12 that the zone of building sub-dam is divided into plurality of sections, elder generation was first section discharging after blending filter cake arrived the stockyard, push away flat with bulldozer 13 then, when thickness reaches 0.5m, first section enters the airing phase, rubber conveyer 11 changes second section discharging over to, changes the 3rd section discharging when second section thickness reaches 0.5m over to, and the rest may be inferred for follow-up section.When the moisture content of first section blending filter cake drops to 38%～42%, roll with compacting machine 14, finish rolling operation when its degree of compaction reaches 95% when above, on first section, lay second layer blending filter cake again, repeat said process at each section and just can finish constructing of the sub-dam 15 of one-level.In constructing the storage capacity that the sub-dam 15 of one-level obtained, continue to lay blending filter cake then and shakeout and roll with bulldozer 13, after the sub-dam 15 of one-level piles with, use the same method and construct secondary, three grades of sub-dams 15 continue to store up blending filter cake, reach final design altitude up to the stockyard.
The filtrate that produces in pressure-filtering process is collected with filtrate receiver 8, returns plant area's technological process with return pipe 10 and reuse after filtrate pump 9 pressurizations.
Claims (5)
1. red mud lime-ash building dam by mixing device is characterized in that: at slurry tank (1) next door configuration feeding pump (6) and filter press (7), feeding pump (6) is connected with the outlet of slurry tank (1) and the import of filter press (7) respectively by pipeline; At filter press (7) next door configuration filtrate receiver (8) and filtrate pump (9), filtrate receiver (8) is connected with the filtrate (liquid of filter press (7) and the import of filtrate pump (9) respectively by pipeline; The outlet of filtrate pump (9) takes back water pipe (10); Connect rubber conveyer (11) under the filter cake dump skip of filter press (7), the terminal point of rubber conveyer (11) inserts in the stockyard; Bulldozer (13), compacting machine (14) are arranged in the stockyard.
2. red mud lime-ash building dam by mixing device according to claim 1 is characterized in that: the capacity of slurry tank (1) satisfies the flow that red mud is starched and lime-ash is starched of depositing 4～6 hours.
3. red mud lime-ash building dam by mixing device according to claim 1 is characterized in that: the capacity of filtrate receiver (8) satisfies deposits 2～3 hours amount of filtrate.
4. red mud lime-ash building dam by mixing device according to claim 1 is characterized in that: mixer (2) is installed in the slurry tank (1).
5. red mud lime-ash building dam by mixing device according to claim 1 is characterized in that: slurry tank (1) connects red mud carrier pipe a(3), red mud carrier pipe b(4) and lime-ash carrier pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202336851U CN201730100U (en) | 2010-06-23 | 2010-06-23 | Damming device for mixing red mud with slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202336851U CN201730100U (en) | 2010-06-23 | 2010-06-23 | Damming device for mixing red mud with slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201730100U true CN201730100U (en) | 2011-02-02 |
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ID=43521257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202336851U Expired - Lifetime CN201730100U (en) | 2010-06-23 | 2010-06-23 | Damming device for mixing red mud with slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201730100U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845818A (en) * | 2010-06-23 | 2010-09-29 | 贵阳铝镁设计研究院 | Method and device for building dam by mixing red mud and ash |
| CN105417189A (en) * | 2015-12-21 | 2016-03-23 | 东北大学设计研究院（有限公司） | Fixed belt conveying and transporting system and method for filter pressing of red mud |
| CN107740428A (en) * | 2017-09-08 | 2018-02-27 | 瓮福达州化工有限责任公司 | A kind of fill dam structure and its technique of building a dam |
-
2010
- 2010-06-23 CN CN2010202336851U patent/CN201730100U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845818A (en) * | 2010-06-23 | 2010-09-29 | 贵阳铝镁设计研究院 | Method and device for building dam by mixing red mud and ash |
| CN101845818B (en) * | 2010-06-23 | 2014-10-08 | 贵阳铝镁设计研究院有限公司 | Method and device for building dam by mixing red mud and ash |
| CN105417189A (en) * | 2015-12-21 | 2016-03-23 | 东北大学设计研究院（有限公司） | Fixed belt conveying and transporting system and method for filter pressing of red mud |
| CN107740428A (en) * | 2017-09-08 | 2018-02-27 | 瓮福达州化工有限责任公司 | A kind of fill dam structure and its technique of building a dam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUIYANG ALUMINUM AND MAGNESIUM DESIGN INSTITUTE CO Free format text: FORMER NAME: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
|
| CP03 | Change of name, title or address |
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 Beijing Road, Guizhou, Guiyang 208 Patentee before: Guiyang Aluminium and Magnesium Design Inst. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |
|
| CX01 | Expiry of patent term |