CN203960295U - Iron-containing liquor is carried out to the system of deironing - Google Patents
Iron-containing liquor is carried out to the system of deironing Download PDFInfo
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- CN203960295U CN203960295U CN201420272257.8U CN201420272257U CN203960295U CN 203960295 U CN203960295 U CN 203960295U CN 201420272257 U CN201420272257 U CN 201420272257U CN 203960295 U CN203960295 U CN 203960295U
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- iron
- containing solution
- reaction kettle
- deironing
- outlet
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 363
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 180
- 239000002002 slurry Substances 0.000 claims abstract description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 24
- 239000001301 oxygen Substances 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims description 61
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 36
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 12
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 10
- 239000011790 ferrous sulphate Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 239000000706 filtrate Substances 0.000 claims description 6
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims description 5
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims description 5
- 229910000361 cobalt sulfate Inorganic materials 0.000 claims description 4
- 229940044175 cobalt sulfate Drugs 0.000 claims description 4
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 claims description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000010409 ironing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 32
- 239000000047 product Substances 0.000 description 19
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000007701 flash-distillation Methods 0.000 description 7
- 239000004568 cement Substances 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000007790 solid phase Substances 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229910052598 goethite Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Compounds Of Iron (AREA)
Abstract
The utility model discloses a kind of system of iron-containing liquor being carried out to deironing.This system comprises: vertical response still, and it has reactor body, iron-containing liquor supplying opening, the first steam-in, the first oxygen intake and the outlet of the first deironing rear slurry; And horizontal reacting still, it has horizontal reacting still body, the first deironing rear slurry supplying opening, the second steam-in, the second oxygen intake and the outlet of the second deironing rear slurry, and wherein, the first deironing rear slurry outlet is connected with the first deironing rear slurry supplying opening.This system, by vertical response still and horizontal reacting still are combined to use, can effectively solve the production that in iron removal, in still, scale problems causes and interrupt, and ensures the continuous and steady operation of production, thereby significantly improves de-ironing efficiency and plant factor.
Description
Technical Field
The utility model belongs to chemical industry and metallurgical field particularly, the utility model relates to a system for carry out deironing to iron-containing solution.
Background
Iron usually enters into solution in the form of impurities in the hydrometallurgical process of nickel, copper, cobalt and the like, and in order to obtain purer nickel, copper and cobalt products, iron in the solution is precipitated and removed before the product recovery process in the smelting process, the commonly adopted methods include a neutralization method, an iron vitriol method, a goethite method and an iron oxide method, wherein the iron content of iron slag removed by the neutralization method, the iron vitriol method and the goethite method is lower, the iron slag is usually fed into a tailing pond for piling up, and the product obtained by the iron oxide method can be used as cement, iron-making raw materials or iron oxide red products due to higher iron content, so that the problem of environmental pollution can be solved, the recovery rate of other metals can be effectively improved, and the economic benefit of enterprises can be increased. However, since the iron oxide process is performed at high temperature and high pressure, the continuous stability of production has a great influence on the production cost.
Therefore, the existing iron removal technology needs to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a system for carry out deironing to iron-bearing solution, this system can effectively solve because the production that scale deposit scheduling problem caused is interrupted, guarantees the continuous steady operation of production to showing improve equipment's utilization ratio, not only can effectively solving the scum tailing storehouse simultaneously and taking up an area of and environmental pollution problem, but also can effectively improve other metal rate of recovery, increase enterprise economic benefits.
In a first aspect of the present invention, the present invention provides a system for removing iron from iron-containing solution, the system comprising:
the system comprises a vertical reaction kettle, a first steam inlet, a first oxygen inlet and a first slurry outlet after iron removal, wherein the vertical reaction kettle is provided with a reaction kettle body, an iron-containing solution supply port, the first steam inlet, the first oxygen inlet and the first slurry outlet after iron removal; and
a horizontal reaction kettle which is provided with a horizontal reaction kettle body, a first slurry supply port after iron removal, a second steam inlet, a second oxygen inlet and a second slurry outlet after iron removal,
wherein,
a first iron-removing reaction space is defined in the vertical reaction kettle body, the iron-containing solution supply port, the first steam inlet, the first oxygen inlet and the first iron-removed slurry outlet are arranged on the vertical reaction kettle body,
and a second iron removal reaction space is defined in the horizontal reaction kettle body, the first iron-removed slurry supply port, the second steam inlet, the second oxygen inlet and the second rear slurry outlet are arranged on the horizontal reaction kettle body, and the first iron-removed slurry outlet is connected with the first iron-removed slurry supply port.
According to the utility model discloses system of carrying out deironing to iron-bearing solution is through jointly using vertical reation kettle and horizontal reation kettle, can effectively solve scale deposit problem in the deironing in-process cauldron to showing deironing efficiency and rate of equipment utilization in improving iron-bearing solution, not only can effectively solving scum tailing storehouse and environmental pollution problem simultaneously, but also can effectively improve other metal rate of recovery, increase enterprise economic benefits.
In addition, the system for removing iron from iron-containing solution according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, the iron-containing solution is at least one selected from the group consisting of a ferrous sulfate solution, an iron-containing nickel sulfate solution, an iron-containing cobalt sulfate solution, and an iron-containing copper sulfate solution.
In some embodiments of the present invention, the system for removing iron from iron-containing solution further comprises: a preheating device having an iron-containing solution inlet and an iron-containing solution outlet, the iron-containing solution outlet being connected to the iron-containing solution supply port.
In some embodiments of the present invention, the system for removing iron from iron-containing solution further comprises: a flash processing device having a pre-treatment liquid inlet and a post-treatment liquid outlet, the pre-treatment liquid inlet being connected to the second post-treatment slurry outlet; and the filtering and washing device is provided with a material inlet, an iron oxide outlet and a filtrate outlet, and the material inlet is connected with the treated liquid outlet. Thereby, an efficient separation of the iron oxide product and the iron-containing solution can be achieved.
In some embodiments of the present invention, the system for removing iron from iron-containing solution further comprises a plurality of vertical reaction kettles and a plurality of horizontal reaction kettles, wherein each horizontal reaction kettle is connected to at least one vertical reaction kettle, and the vertical reaction kettles are connected to the horizontal reaction kettles, and a control valve is provided between the vertical reaction kettles and the horizontal reaction kettles for communicating and closing. This can further improve the iron removal efficiency.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a system for removing iron from an iron-containing solution according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system for removing iron from an iron-containing solution according to another embodiment of the present invention;
fig. 3 is a schematic flow chart of a method for removing iron from an iron-containing solution by using the system for removing iron from an iron-containing solution according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a method for removing iron from an iron-containing solution by using a system for removing iron from an iron-containing solution according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In a first aspect of the present invention, the present invention provides a system for removing iron from a ferrous solution. The system for removing iron from an iron-containing solution according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 2. According to the utility model discloses an embodiment, this system includes:
vertical reaction kettle 100: according to an embodiment of the present invention, the vertical reaction vessel 100 has a reaction vessel body 10. According to the utility model discloses an embodiment, inject first deironing reaction space in the vertical reation kettle body 10 for carry out first deironing in first deironing reaction space and handle, thereby can obtain thick liquid behind the first deironing. According to an embodiment of the present invention, the iron-containing solution may be at least one selected from a ferrous sulfate solution, an iron-containing nickel sulfate solution, an iron-containing cobalt sulfate solution, and an iron-containing copper sulfate solution. According to the utility model discloses a specific embodiment, ferrous iron concentration can be for 15 ~ 50g/L in the ferrous sulfate. According to the utility model discloses an embodiment, the condition of first deironing processing is not restricted by specially, according to the utility model discloses a specific embodiment, first deironing is handled and can be carried out 0.5 ~ 1 hour under the condition that the temperature is 170 ~ 200 degrees centigrade, oxygen partial pressure is 0.2 ~ 0.4 MPa. In the step of the method,specifically, iron in the ferrous sulfate solution enters a solid phase as ferric oxide, and simultaneously generates sulfuric acid, the sulfuric acid can be returned to the leaching process for continuous utilization, and the reaction equation mainly generated is as follows: 2FeSO4+0.5O2+2H2O＝Fe2O3+2H2SO4。
According to the embodiment of the present invention, the iron-containing solution supply port 11, the first steam inlet 12, the first oxygen inlet 13, and the first deironing slurry outlet 14 are provided on the vertical reaction tank body 10. According to the utility model discloses a specific embodiment, iron-containing solution supply port 11 is arranged in supplying iron-containing solution to first deironing reaction space, and first steam inlet 12 is arranged in supplying steam to first deironing reaction space, and first oxygen inlet 13 is arranged in supplying oxygen to first deironing reaction space, and first deironing back thick liquid export 14 is arranged in discharging first deironing reaction space with first deironing back thick liquid.
Horizontal reactor 200: according to the utility model discloses an embodiment, horizontal reation kettle 200 has horizontal reation kettle body 20. According to the utility model discloses an embodiment, inject second deironing reaction space in the horizontal reation kettle body 20 for thick liquid carries out second deironing to thick liquid after the first deironing in second deironing reaction space and handles, and obtains thick liquid after the second deironing. According to the utility model discloses an embodiment, the condition that the second deironing was handled is not restricted by specially, according to the utility model discloses a specific embodiment, the second deironing is handled and can be carried out 2 ~ 3 hours under the condition that the temperature is 170 ~ 200 degrees centigrade, oxygen partial pressure is 0.2 ~ 0.4 MPa. In the step, similarly, iron in the ferrous sulfate solution enters a solid phase as ferric oxide, and simultaneously sulfuric acid is generated and can be returned to the leaching process for continuous utilization.
According to the utility model discloses an embodiment, thick liquid export 24 sets up on horizontal reation kettle body 20 after first deironing thick liquid supply port 21, second steam inlet supply port 22, second oxygen entry 23 and the second. According to the embodiment of the present invention, the first post-iron-removal slurry supply port 21 is connected to the first post-iron-removal slurry outlet 14. According to the utility model discloses a specific embodiment, slurry supply mouth 21 is arranged in supplying first deironing back slurry to second deironing reaction space in after the iron removal, and second steam inlet 22 is arranged in supplying steam to second deironing reaction space, and second oxygen inlet 23 is arranged in supplying oxygen to second deironing reaction space, and slurry outlet 24 is arranged in discharging second deironing reaction space after the second deironing.
According to the utility model discloses the system of carrying out deironing to iron-containing solution is through jointly using vertical reation kettle and horizontal reation kettle, can effectively solve the production middle section that scale deposit problem caused in the iron removal in-process cauldron, guarantee the continuous steady operation of production, thereby it improves iron-containing solution deironing efficiency and rate of equipment utilization to show, the slag volume that this system produced is little, the iron content is high, smuggle other valuable metal volume secretly less, the sediment need not the stockpiling, can sell as the byproduct, not only can solve the environmental pollution problem, can also effectively improve other metal rates of recovery, increase enterprise economic benefits.
The system for removing iron from an iron-containing solution according to an embodiment of the present invention is further described below with reference to fig. 2. According to the utility model discloses an embodiment, this system further includes:
the preheating device 300: according to the embodiment of the present invention, the preheating device 300 has the iron-containing solution inlet 31 and the iron-containing solution outlet 32, and the iron-containing solution outlet 32 is connected to the iron-containing solution supply port 11, for preheating the iron-containing solution in advance before supplying the iron-containing solution to the vertical reaction kettle. According to the utility model discloses an embodiment, the temperature that carries out preheating treatment to iron-bearing solution is not restricted by specially, according to the utility model discloses a specific embodiment, before supplying iron-bearing solution to vertical reation kettle, can preheat iron-bearing solution to 80 ~ 100 degrees centigrade, for example can preheat iron-bearing solution to 90 degrees centigrade.
The flash processing apparatus 400: according to the utility model discloses an embodiment, liquid export 42 after liquid entry 41 and the processing before flash distillation processing apparatus 400 has the processing, and liquid entry 41 links to each other with second deironing back thick liquid export 24 before the processing for carry out flash distillation cooling depressurization treatment with second deironing back thick liquid, and obtain the thick liquid after the second deironing through flash distillation processing. In the step, the high-temperature and high-pressure slurry is reduced to the normal pressure of 100 ℃, a large amount of secondary steam is generated at the same time, and the secondary steam can be recycled as a heat source.
The filtration and washing device 500: according to the embodiment of the utility model, filter washing device 500 has material inlet 51, iron oxide export 52 and filtrating export 53, material inlet 51 links to each other with handling back liquid export 42, a thick liquid filters the washing after being used for the second deironing through the flash distillation processing, so as to obtain iron oxide product and through the iron-containing solution that purifies respectively, wherein, iron oxide product can regard as cement, steelmaking or the raw materials use of production iron oxide red product, not only can solve the environmental pollution problem, can also effectively improve other metal rate of recovery, increase enterprise economic benefits.
According to the utility model discloses system for carry out deironing to iron-containing solution can include a plurality of vertical reation kettle and a plurality of horizontal reation kettle, wherein, every horizontal reation kettle links to each other with at least one vertical reation kettle respectively to at vertical reation kettle with be provided with control flap between the horizontal reation kettle for control vertical reation kettle with intercommunication between the horizontal reation kettle and close.
The above detailed description is made on the system for removing iron from iron-containing solution according to the embodiment of the present invention, and for convenience of understanding, the following detailed description is made on the method for removing iron from iron-containing solution by using the system for removing iron from iron-containing solution according to the embodiment of the present invention with reference to fig. 3 to 4. According to the utility model discloses an embodiment, this method includes:
s100: first iron removal treatment
According to the utility model discloses an in the solution supply to vertical reation kettle with the iron content to introduce steam and oxygen in to vertical reation kettle, so that carry out first deironing in vertical reation kettle and handle, thereby can obtain the thick liquid behind the first deironing. According to an embodiment of the present invention, the iron-containing solution is selected from ferrous sulfate solutionAt least one of a liquid, a nickel sulfate solution containing iron, and a copper sulfate solution containing iron. According to the utility model discloses a specific embodiment, ferrous iron concentration can be for 15 ~ 50g/L in the ferrous sulfate. According to the utility model discloses an embodiment, the condition of first deironing processing is not restricted by specially, according to the utility model discloses a specific embodiment, first deironing is handled and can be carried out 0.5 ~ 1 hour under the condition that the temperature is 170 ~ 200 degrees centigrade, oxygen partial pressure is 0.2 ~ 0.4 MPa. In the step, specifically, iron in the ferrous sulfate solution enters a solid phase as ferric oxide, and simultaneously sulfuric acid is generated, and can be returned to the leaching process for continuous utilization, and the reaction equation mainly generated is as follows: 2FeSO4+0.5O2+2H2O＝Fe2O3+2H2SO4。
S200: second iron removal treatment
According to the utility model discloses an in supplying the thick liquid to horizontal reation kettle after the first deironing that obtains above-mentioned to introduce steam and oxygen in to horizontal reation kettle, so that carry out the second deironing in horizontal reation kettle and handle, thereby can obtain the thick liquid after the second deironing. According to the utility model discloses an embodiment, the condition that the second deironing was handled is not restricted by specially, according to the utility model discloses a specific embodiment, the second deironing is handled and can be carried out 2 ~ 3 hours under the condition that the temperature is 170 ~ 200 degrees centigrade, oxygen partial pressure is 0.2 ~ 0.4 MPa. In the step, similarly, iron in the ferrous sulfate solution enters a solid phase as ferric oxide, and simultaneously sulfuric acid is generated and can be returned to the leaching process for continuous utilization.
Utilize the utility model discloses the system that carries out deironing to iron-containing solution carries out the method of deironing to iron-containing solution through jointly using vertical reation kettle and horizontal reation kettle, can effectively solve the production middle section that scale deposit problem caused in the iron removal in-process cauldron, guarantee the continuous stable operation of production, thereby showing improvement deironing efficiency and rate of equipment utilization, the slag volume that this method produced is little, the iron content is high, smuggle other valuable metal volume secretly less, the sediment need not the pile up, can sell as the by-product, not only can solve the environmental pollution problem, can also effectively improve other metal rates of recovery, increase enterprise economic benefits.
The method for removing iron from the iron-containing solution by using the system for removing iron from the iron-containing solution according to the embodiment of the present invention is further described below with reference to fig. 4. According to an embodiment of the present invention, the method further comprises:
s300: preheating treatment
According to the utility model discloses an embodiment, before supplying the iron-bearing solution to vertical reation kettle, carry out preheating process to the iron-bearing solution. According to the utility model discloses an embodiment, the temperature that carries out preheating treatment to iron-bearing solution is not restricted by specially, according to the utility model discloses a specific embodiment, before supplying iron-bearing solution to vertical reation kettle, can preheat iron-bearing solution to 80 ~ 100 degrees centigrade, for example can preheat iron-bearing solution to 90 degrees centigrade. The inventors found that the preheating treatment of the iron-containing solution to this temperature range before supplying the iron-containing solution to the vertical reaction tank can significantly improve the efficiency of the subsequent first iron removal treatment.
S400: flash evaporation treatment
According to the utility model discloses an embodiment, carry out flash distillation cooling depressurization treatment with the thick liquid behind the second deironing that above-mentioned obtained to thick liquid behind the second deironing that can obtain through flash distillation processing. In the step, the high-temperature and high-pressure slurry is reduced to the normal pressure of 100 ℃, a large amount of secondary steam is generated at the same time, and the secondary steam can be recycled as a heat source.
S500: filtering and washing
According to the utility model discloses an embodiment, filter the washing with the above-mentioned second deironing back thick liquid that obtains through flash distillation processing to can obtain the iron oxide product respectively and through the solution after deironing purifies, wherein, the iron oxide product can regard as cement, steelmaking or the raw materials use of production iron oxide red product.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
The method for removing iron from the iron-containing solution of the embodiment of the invention is used for treating the iron-containing nickel sulfate solution:
at 1m3Vertical reactor and 3m3In a horizontal reactor, at 1m3The iron-containing solution is added at a flow rate of/h, wherein the solution contains 60g/L of nickel and 25g/L of iron (as Fe)2+Metering), keeping the pH value at 2.5, maintaining the reaction temperature at 190 ℃, carrying out flash evaporation, filtration and washing on the solution after iron precipitation to obtain an iron-containing product (precipitate) and a liquid after iron precipitation (filtrate), and returning the liquid after iron precipitation to the system for recycling.
The iron-containing product obtained by determination contains 60-68% of iron, less than 0.3% of nickel and less than 1% of sulfur, and can be sold as cement and iron ore or further produced into iron oxide red products.
Example 2
The method for removing iron from the iron-containing solution of the embodiment of the invention is used for treating the iron-containing copper sulfate solution:
at 1m3Vertical reactor and 3m3In a horizontal reactor, at 1m3The iron-containing solution is added at a flow rate of 50g/L of copper and 30g/L of iron (as Fe)2+Metering), keeping the pH value at 2.5, maintaining the reaction temperature at 190 ℃, carrying out flash evaporation, filtration and washing on the solution after iron precipitation to obtain an iron-containing product (precipitate) and a liquid after iron precipitation (filtrate), and returning the liquid after iron precipitation to the system for recycling.
The iron-containing product contains 60-68% of iron, less than 0.2% of copper and less than 1% of sulfur through determination, and can be sold as cement and iron ore or further produced into iron oxide red products.
Example 3
The method for removing iron from the iron-containing solution of the embodiment of the invention is used for treating the iron-containing cobalt sulfate solution:
at 1m3Vertical reactor and 3m3In a horizontal reactor, at 1m3At a flow rate of 30g/L cobalt in iron-containing solution and 35g/L iron (as Fe)2+Metering), keeping the pH value at 2.5, maintaining the reaction temperature at 190 ℃, carrying out flash evaporation, filtration and washing on the solution after iron precipitation to obtain an iron-containing product (precipitate) and a liquid after iron precipitation (filtrate), and returning the liquid after iron precipitation to the system for recycling.
The iron-containing product contains 60-68% of iron, less than 0.2% of cobalt and less than 1% of sulfur through determination, and can be sold as cement and iron ore or further produced into iron oxide red products.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (5)
1. A system for removing iron from an iron-containing solution, comprising:
the system comprises a vertical reaction kettle, a first steam inlet, a first oxygen inlet and a first slurry outlet after iron removal, wherein the vertical reaction kettle is provided with a reaction kettle body, an iron-containing solution supply port, the first steam inlet, the first oxygen inlet and the first slurry outlet after iron removal; and
a horizontal reaction kettle which is provided with a horizontal reaction kettle body, a first slurry supply port after iron removal, a second steam inlet, a second oxygen inlet and a second slurry outlet after iron removal,
wherein,
a first iron-removing reaction space is defined in the vertical reaction kettle body, the iron-containing solution supply port, the first steam inlet, the first oxygen inlet and the first iron-removed slurry outlet are arranged on the vertical reaction kettle body,
and a second iron removal reaction space is defined in the horizontal reaction kettle body, the first iron-removed slurry supply port, the second steam inlet, the second oxygen inlet and the second iron-removed slurry outlet are arranged on the horizontal reaction kettle body, and the first iron-removed slurry outlet is connected with the first iron-removed slurry supply port.
2. The system for removing iron from an iron-containing solution according to claim 1, wherein the iron-containing solution is at least one selected from the group consisting of a ferrous sulfate solution, an iron-containing nickel sulfate solution, an iron-containing cobalt sulfate solution, and an iron-containing copper sulfate solution.
3. The system for removing iron from an iron-containing solution of claim 1, further comprising:
a preheating device having an iron-containing solution inlet and an iron-containing solution outlet, the iron-containing solution outlet being connected to the iron-containing solution supply port.
4. The system for removing iron from an iron-containing solution of claim 1, further comprising:
the flash evaporation treatment device is provided with a liquid inlet before treatment and a liquid outlet after treatment, and the liquid inlet before treatment is connected with the second slurry outlet after iron removal; and
and the filtering and washing device is provided with a material inlet, an iron oxide outlet and a filtrate outlet, and the material inlet is connected with the treated filtrate outlet.
5. The system for removing iron from iron-containing solution according to claim 1, comprising a plurality of vertical reaction kettles and a plurality of horizontal reaction kettles,
each horizontal reaction kettle is connected with at least one vertical reaction kettle, and a control valve for controlling the communication and the closing between the vertical reaction kettle and the horizontal reaction kettle is arranged between the vertical reaction kettle and the horizontal reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272257.8U CN203960295U (en) | 2014-05-26 | 2014-05-26 | Iron-containing liquor is carried out to the system of deironing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272257.8U CN203960295U (en) | 2014-05-26 | 2014-05-26 | Iron-containing liquor is carried out to the system of deironing |
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| Publication Number | Publication Date |
|---|---|
| CN203960295U true CN203960295U (en) | 2014-11-26 |
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|---|---|---|---|
| CN201420272257.8U Expired - Lifetime CN203960295U (en) | 2014-05-26 | 2014-05-26 | Iron-containing liquor is carried out to the system of deironing |
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| Country | Link |
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| CN (1) | CN203960295U (en) |
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- 2014-05-26 CN CN201420272257.8U patent/CN203960295U/en not_active Expired - Lifetime
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