CN215364990U - Organic matter removing equipment in alumina production - Google Patents
Organic matter removing equipment in alumina production Download PDFInfo
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- CN215364990U CN215364990U CN202121600081.0U CN202121600081U CN215364990U CN 215364990 U CN215364990 U CN 215364990U CN 202121600081 U CN202121600081 U CN 202121600081U CN 215364990 U CN215364990 U CN 215364990U
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- Prior art keywords
- ash
- organic matter
- mixing tank
- matter removing
- outlet
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- 239000005416 organic matter Substances 0.000 title claims abstract description 21
- 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 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000000428 dust Substances 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 239000012452 mother liquor Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- 238000003756 stirring Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000010413 mother solution Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 10
- 239000003463 adsorbent Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 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
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 1
- 229940039790 sodium oxalate Drugs 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model relates to organic matter removing equipment in alumina production, which comprises a roasting furnace dust remover, a first ash bin and a second ash bin, wherein an ash inlet of the first ash bin is connected with an ash outlet of the roasting furnace dust remover, the second ash bin is provided with a feeding port for filling active carbon, the ash outlets of the first ash bin and the second ash bin are connected with a mixing tank, the mixing tank is provided with a mother solution inlet, the organic matter removing equipment also comprises a reaction tank with a feeding port connected with a liquid outlet of the mixing tank, and a stirring device is arranged in the mixing tank. The method has the obvious characteristic that the furnace ash collected by the dust remover of the roasting furnace is utilized as waste, so that the removal cost of organic matters is reduced, and the method is clean and environment-friendly.
Description
Technical Field
The utility model relates to organic matter removing equipment in alumina production corollary equipment.
Background
The organic matter in the alumina production flow mainly comes from bauxite and process organic additives, such as flocculating agents, defoaming agents, crystallization aids, dehydrating agents and the like. Organic impurities have serious adverse effects on processes such as decomposition, evaporation and filtration in the alumina production process, so that the organic matters generated in the alumina production process need to be removed by using proper equipment and methods.
In the prior art, common methods for removing organic substances include: organic oxidation, washing, crystallization, precipitation and the like, but the methods all have the problems of large investment, high operation cost and low efficiency, and chemical removal methods are easy to pollute the environment, some removal methods are only effective for a certain class of organic matters, and the existence of the organic matters forms the biggest obstacle of the economic operation of the bauxite.
Disclosure of Invention
The utility model aims to provide an organic matter removing device in alumina production, which can reduce the operation cost.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides an organic matter removal equipment in alumina production, includes and bakes burning furnace dust remover, first ash storehouse and second ash storehouse over a slow fire, the ash inlet in first ash storehouse links to each other with the ash outlet that bakes burning furnace dust remover over a slow fire, the second ash storehouse has the charge door that is used for the active carbon to pack into, the ash outlet in first ash storehouse, second ash storehouse links to each other with the mixing tank, the mixing tank has the mother liquor import, organic matter removal equipment still includes the reaction tank that the liquid outlet of feed inlet and mixing tank links to each other, be provided with agitating unit in the mixing tank.
The organic matter removing equipment further comprises a filter press, the filter press is provided with a filter press material inlet, the bottom of the reaction tank is connected with the filter press material inlet through a feeding pipeline, and the feeding pipeline is provided with a feeding pump.
The filtrate outlet of the filter press is connected with the mother liquor inlet through a pipeline.
A first quantitative feeder is arranged between the ash outlet of the first ash bin and the mixing tank, and a second quantitative feeder is arranged between the ash outlet of the second ash bin and the mixing tank.
The first quantitative feeder and the second quantitative feeder are both spiral quantitative feeders.
A slurry pump is arranged on a pipeline connected between the mixing tank and the reaction tank.
The first ash bin and the second ash bin are both provided with dust discharge ports, dust collectors are arranged on the dust discharge ports, and dust outlet ports of the dust collectors are connected with the corresponding ash bins.
The utility model has the beneficial effects that: when the utility model is used, furnace ash and activated carbon (purchased from outsourcing) collected by a dust remover of a roasting furnace are respectively used as combined adsorbents in respective ash bins, the furnace ash and the activated carbon are added into a mixing tank according to the process requirements, evaporation mother liquor from an evaporation process is also added into the mixing tank, the evaporation mother liquor and the adsorbents are fully mixed by stirring, and then the evaporation mother liquor is fully adsorbed in a reaction tank, so that the work of adsorbing and removing organic matters in the evaporation mother liquor is completed. The method has the remarkable characteristics that the furnace ash collected by the dust remover of the roasting furnace is subjected to waste utilization, so that the removal cost of organic matters is reduced, and the method is clean and environment-friendly; the method has the characteristics of high organic matter removal efficiency and good stability by physical adsorption of organic matters, can simultaneously remove various organic matters in the sodium aluminate evaporation mother liquor, and further enhances the removal of sodium oxalate.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
An embodiment of an organic matter removing apparatus in alumina production according to the present invention is shown in fig. 1: comprises a roasting furnace dust remover 1, a first ash bin 4, a second ash bin 10, a mixing tank 7, a reaction tank 8 and a filter press 9.
The dust remover 1 of the roasting furnace is connected with a dust exhaust port of the roasting furnace and is used for collecting furnace dust generated by the roasting furnace, an ash inlet of the first ash bin 4 is connected with an ash outlet of the dust remover 10 of the roasting furnace, and specifically, an ash returning machine 2 is arranged at the ash outlet of the dust remover of the roasting furnace and is connected with the ash inlet of the first ash bin through a pipeline. The second ash bin has a charging port 11 for charging activated carbon. The first ash bin and the second ash bin are provided with dust exhaust ports, the dust collectors 3 are arranged on the dust exhaust ports, the discharged atmosphere meets the environmental protection requirement, and dust outlets of the dust collectors are connected with the corresponding ash bins, so that secondary utilization of dust collection is realized.
The ash outlets of the first ash bin and the second ash bin are connected with a mixing tank, the mixing tank is provided with a mother liquid inlet 6, and a stirring device is arranged in the mixing tank. A first quantitative feeder 5 is arranged between the ash outlet of the first ash bin and the mixing tank, and a second quantitative feeder 12 is arranged between the ash outlet of the second ash bin and the mixing tank. In this embodiment, the first constant feeder 5 and the second constant feeder 12 are both screw constant feeders.
The feed inlet 8 of the reaction tank is connected with the liquid outlet of the mixing tank 7, and a slurry pump is arranged on a pipeline connected between the mixing tank and the reaction tank. The filter press 9 is provided with a filter press material inlet, the bottom of the reaction tank is connected with the filter press material inlet through a feeding pipeline, and the feeding pipeline is provided with a feeding pump.
The filtrate outlet of the filter press is connected with the mother liquor inlet through a pipeline. Item 13 in the figure represents a baking system.
In the utility model, furnace ash and activated carbon (purchased from outsourcing) collected by a dust remover of the roasting furnace are respectively conveyed into respective ash bins by air force to be stored, the main component of the furnace ash is aluminum hydroxide, and the aluminum hydroxide has a porous structure and has adsorption capacity. Dust collectors are arranged at dust discharge ports of the dust bins, so that waste of furnace dust can be avoided while qualified emission of waste gas is guaranteed. The discharge port of the ash bin puts materials into the mixing tank through a spiral constant feeder, and the rotating speed of the spiral is controlled through variable frequency speed regulation, so that the adsorbent is added into the mixing tank according to the process requirements. Adding evaporation mother liquor from an evaporation process into a mixing tank, fully mixing the mother liquor with an adsorbent by stirring, controlling the material level of the mixing tank to ensure the mixing effect, arranging a slurry pump below the mixing tank, conveying the mixture to a reaction tank, fully staying for more than 4 hours for adsorption, conveying the mixture to a filter press for filter pressing by a pump, conveying filter cakes of the filter press to a coal yard of a power plant, and returning filtrate to an evaporation stock solution system or blending alkali liquor.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. An organic matter removal equipment in alumina production, its characterized in that: including roasting a burning furnace dust remover, first ash storehouse and second ash storehouse, the ash inlet in first ash storehouse links to each other with the ash outlet of roasting a burning furnace dust remover, and the second ash storehouse has the charge door that is used for the active carbon to pack into, and the ash outlet in first ash storehouse, second ash storehouse links to each other with the mixing tank, and the mixing tank has the mother liquor import, and organic matter removal equipment still includes the reaction tank that the liquid outlet of feed inlet and mixing tank links to each other, is provided with agitating unit in the mixing tank.
2. The organic matter removing apparatus according to claim 1, characterized in that: the organic matter removing equipment further comprises a filter press, the filter press is provided with a filter press material inlet, the bottom of the reaction tank is connected with the filter press material inlet through a feeding pipeline, and the feeding pipeline is provided with a feeding pump.
3. The organic matter removing apparatus according to claim 2, characterized in that: the filtrate outlet of the filter press is connected with the mother liquor inlet through a pipeline.
4. The organic matter removing apparatus according to claim 1, characterized in that: a first quantitative feeder is arranged between the ash outlet of the first ash bin and the mixing tank, and a second quantitative feeder is arranged between the ash outlet of the second ash bin and the mixing tank.
5. The organic matter removing apparatus according to claim 4, characterized in that: the first quantitative feeder and the second quantitative feeder are both spiral quantitative feeders.
6. The organic matter removing apparatus according to claim 1, characterized in that: a slurry pump is arranged on a pipeline connected between the mixing tank and the reaction tank.
7. The organic matter removing apparatus according to any one of claims 1 to 6, characterized in that: the first ash bin and the second ash bin are both provided with dust discharge ports, dust collectors are arranged on the dust discharge ports, and dust outlet ports of the dust collectors are connected with the corresponding ash bins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121600081.0U CN215364990U (en) | 2021-07-14 | 2021-07-14 | Organic matter removing equipment in alumina production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121600081.0U CN215364990U (en) | 2021-07-14 | 2021-07-14 | Organic matter removing equipment in alumina production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215364990U true CN215364990U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121600081.0U Active CN215364990U (en) | 2021-07-14 | 2021-07-14 | Organic matter removing equipment in alumina production |
Country Status (1)
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| CN (1) | CN215364990U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445353A (en) * | 2022-07-29 | 2022-12-09 | 靖西天桂铝业有限公司 | Device and method for removing organic matters by using fly ash in alumina production |
-
2021
- 2021-07-14 CN CN202121600081.0U patent/CN215364990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445353A (en) * | 2022-07-29 | 2022-12-09 | 靖西天桂铝业有限公司 | Device and method for removing organic matters by using fly ash in alumina production |
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