CN203960298U - Iron content solution of zinc sulfate is carried out to the system of deironing - Google Patents
Iron content solution of zinc sulfate is carried out to the system of deironing Download PDFInfo
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- CN203960298U CN203960298U CN201420272512.9U CN201420272512U CN203960298U CN 203960298 U CN203960298 U CN 203960298U CN 201420272512 U CN201420272512 U CN 201420272512U CN 203960298 U CN203960298 U CN 203960298U
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- iron
- zinc sulfate
- sulfate solution
- deironing
- reaction kettle
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 269
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 134
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 title claims abstract description 81
- 229960001763 zinc sulfate Drugs 0.000 title claims abstract description 81
- 229910000368 zinc sulfate Inorganic materials 0.000 title claims abstract description 81
- 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 51
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000010409 ironing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 28
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 14
- 229910052725 zinc Inorganic materials 0.000 description 14
- 239000011701 zinc Substances 0.000 description 14
- 239000000047 product Substances 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000003912 environmental pollution Methods 0.000 description 7
- 238000007701 flash-distillation Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 239000004568 cement Substances 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000007790 solid phase Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002994 raw material 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
- 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
- 230000006872 improvement Effects 0.000 description 2
- 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 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling 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
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 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
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses a kind of system of iron content solution of zinc sulfate being carried out to deironing.This system comprises: vertical response still, and it has reactor body, iron content solution of zinc sulfate 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.According to the system that iron content solution of zinc sulfate is carried out to deironing of the utility model embodiment 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 interrupts, ensure the continuous and steady operation of producing, thereby significantly improve 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 zinc sulfate solution.
Background
Iron usually enters the solution in the form of impurities in the wet smelting process of zinc and the like, and in order to obtain a purer zinc product, iron in the solution is precipitated and removed before the product recovery process in the smelting process, the method usually adopted comprises a neutralization method, an iron vitriol method, a goethite method and an iron oxide method, wherein the iron-containing of iron-removing slag by the neutralization method, the iron vitriol method and the goethite method is lower, the iron slag is usually stockpiled in a tailing pond, and the product obtained by the iron oxide method can be used as a raw material for cement and iron making or for producing iron oxide red products due to higher iron content, so that the problem of environmental pollution can be solved, the recovery rate of metal zinc can be effectively improved, and the economic benefit of enterprises is 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 content zinc sulfate 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 scum tailing storehouse and environmental pollution problem simultaneously, but also can effectively improve metallic zinc's rate of recovery, increase enterprise economic benefits.
The utility model discloses a first aspect, the utility model provides a system for carry out deironing to iron-containing zinc sulfate solution, this system includes:
the device comprises a vertical reaction kettle, a first steam inlet, a first oxygen inlet and a first iron-removed slurry outlet, wherein the vertical reaction kettle is provided with a reaction kettle body, an iron-containing zinc sulfate solution supply port, the first steam inlet, the first oxygen inlet and the first iron-removed slurry outlet; 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 removal reaction space is defined in the vertical reaction kettle body, the iron-containing zinc sulfate solution supply port, the first steam inlet, the first oxygen inlet and the first iron removal 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 content zinc sulfate 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 content zinc sulfate solution, not only can effectively solving scum tailing storehouse and environmental pollution problem simultaneously, but also can effectively improve metallic zinc's rate of recovery, increase enterprise economic benefits.
In addition, according to the utility model discloses the system of deironing to iron-containing zinc sulfate solution of above-mentioned embodiment can also have following additional technical characterstic:
in some embodiments of the utility model, the system for deironing iron-containing zinc sulfate solution further includes: the preheating device is provided with an iron-containing zinc sulfate solution inlet and an iron-containing zinc sulfate solution outlet, and the iron-containing zinc sulfate solution outlet is connected with the iron-containing zinc sulfate solution supply port.
In some embodiments of the utility model, the system for deironing iron-containing zinc sulfate solution further includes: 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. Therefore, the effective separation of the iron oxide product and the iron-containing zinc sulfate solution can be realized.
The utility model discloses an in some embodiments, the system of deironing is carried out iron-containing zinc sulfate solution further includes 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, and vertical reation kettle with be provided with control between the horizontal reation kettle vertical reation kettle with intercommunication between the horizontal reation kettle and the control flap of 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 zinc sulfate 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 zinc sulfate solution according to another embodiment of the present invention;
fig. 3 is a schematic flow chart of a method for removing iron from a zinc sulfate solution containing iron by using the system for removing iron from a zinc sulfate solution containing iron according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a method for removing iron from iron-containing zinc sulfate solution by using the system for removing iron from iron-containing zinc sulfate solution according to still 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 utility model provides a system for removing iron from iron-containing zinc sulfate solution. The system for removing iron from iron-containing zinc sulfate solution according to the 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 the utility model discloses a specific embodiment, the concentration of zinc in the iron-containing zinc sulfate solution can be not higher than 100 g/L. 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 iron-containing zinc 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。
According to the embodiment of the utility model, slurry outlet 14 sets up on vertical reation kettle body 10 after iron-containing zinc sulfate solution supply port 11, first steam inlet 12, first oxygen entry 13 and the first deironing. According to the utility model discloses a specific embodiment, iron content zinc sulfate solution supply port 11 is arranged in supplying iron content zinc sulfate 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 the first deironing reaction space of thick liquid discharge behind the first deironing.
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 this step, iron enters the solid phase as iron oxide and simultaneously generates sulfuric acid, which can be returned to the leaching process for further use.
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 content zinc sulfate 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 stable operation of production, thereby showing improvement iron content zinc sulfate solution deironing efficiency and rate of equipment utilization, the slag volume that this system produced is little, the iron content is high, smuggle other valuable metals 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 metallic zinc's rate of recovery, increase enterprise economic benefits.
The system for removing iron from iron-containing zinc sulfate solution according to the embodiment of the present invention is further described 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 utility model, preheating device 300 has iron content zinc sulfate solution entry 31 and iron content zinc sulfate solution export 32, and iron content zinc sulfate solution export 32 links to each other with iron content zinc sulfate solution supply mouth 11 for before supplying iron content zinc sulfate solution to vertical reation kettle, carry out preheating to iron content zinc sulfate solution in advance. According to the utility model discloses an embodiment, the temperature that carries out preheating treatment to iron content zinc sulfate solution is not restricted by specially, according to the utility model discloses a specific embodiment, before supplying iron content zinc sulfate solution to vertical reation kettle, can preheat iron content zinc sulfate solution to 80 ~ 100 degrees centigrade, for example can preheat iron content zinc sulfate 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 content zinc sulfate solution of purification respectively, wherein, the iron oxide product can regard as cement, the raw materials of steelmaking or production iron oxide red product uses, not only can solve the environmental pollution problem, can also effectively improve metallic zinc's rate of recovery, increase enterprise economic benefits.
According to the utility model discloses system for carry out deironing to iron-containing zinc sulfate solution can include a plurality of vertical reation kettle and a plurality of horizontal reation kettle, and 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 system according to the embodiment of the utility model provides a carry out deironing to iron-containing zinc sulfate solution has carried out the detailed description, for convenient understanding, follows and refers to fig. 3 ~ 4 and is utilizing the utility model discloses a system of carrying out deironing to iron-containing zinc sulfate solution carries out the detailed description to the method that iron-containing zinc sulfate solution carries out the deironing. According to the utility model discloses an embodiment, this method includes:
s100: first iron removal treatment
According to the embodiment of the utility model, supply with iron-containing zinc sulfate solution to vertical reation kettle in to introduce steam and oxygen in the vertical reation kettle, so that carry out first deironing in vertical reation kettle and handle, thereby can obtain first deironing back thick liquid. According to the utility model discloses a specific embodiment, the concentration of zinc in the iron-containing zinc sulfate solution can be not higher than 100 g/L. 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 is carried out 0 under the condition that the temperature is 170 ~ 200 degrees centigrade, oxygen partial pressure is 0.2 ~ 0.4MPa5 to 1 hour. In the step, specifically, iron in the iron-containing zinc 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 this step, iron enters the solid phase as iron oxide and simultaneously generates sulfuric acid, which can be returned to the leaching process for further use.
Utilize the utility model discloses the system that carries out deironing to iron content zinc sulfate solution carries out the method of deironing to iron content zinc sulfate 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 metals 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 metallic zinc's rate of recovery, increase enterprise economic efficiency.
The method for removing iron from iron-containing zinc sulfate solution by using the system for removing iron from iron-containing zinc sulfate solution according to the embodiment of the present invention is further described with reference to fig. 4. According to an embodiment of the present invention, the method further comprises:
s300: preheating treatment
According to the embodiment of the utility model, before supplying iron-containing zinc sulfate solution to vertical reation kettle, carry out preheating treatment to iron-containing zinc sulfate solution. According to the utility model discloses an embodiment, the temperature that carries out preheating treatment to iron content zinc sulfate solution is not restricted by specially, according to the utility model discloses a specific embodiment, before supplying iron content zinc sulfate solution to vertical reation kettle, can preheat iron content zinc sulfate solution to 80 ~ 100 degrees centigrade, for example can preheat iron content zinc sulfate solution to 90 degrees centigrade. The inventors found that preheating the iron-containing zinc sulfate solution to this temperature range before supplying the iron-containing zinc sulfate 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 of production iron oxide red product to use, not only can solve the environmental pollution problem, can also effectively improve metallic zinc's rate of recovery, increase enterprise economic benefits.
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.
Examples
Utilize the utility model discloses system to iron content zinc sulfate solution carry out deironing handles iron content zinc sulfate solution:
wherein the iron-containing zinc sulfate solution is a solution obtained after indium precipitation in zinc smelting.
At 1m3Vertical reaction kettle and 3m3In a horizontal reaction kettle, 1m3The zinc sulfate solution containing iron is added at the flow rate of/h, the solution contains 100g/L of zinc and 30g/L of iron (as Fe)2+Metering), keeping the pH value at 3, maintaining the reaction temperature at 185 ℃, 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 oxide-containing product contains 60-68% of iron, less than 0.5% of zinc and less than 0.8% 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 (4)
1. The utility model provides a system for carry out deironing to iron-containing zinc sulfate solution which characterized in that includes:
the device comprises a vertical reaction kettle, a first steam inlet, a first oxygen inlet and a first iron-removed slurry outlet, wherein the vertical reaction kettle is provided with a reaction kettle body, an iron-containing zinc sulfate solution supply port, the first steam inlet, the first oxygen inlet and the first iron-removed slurry outlet; 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 removal reaction space is defined in the vertical reaction kettle body, the iron-containing zinc sulfate solution supply port, the first steam inlet, the first oxygen inlet and the first iron removal 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 iron-containing zinc sulfate solution according to claim 1, further comprising:
the preheating device is provided with an iron-containing zinc sulfate solution inlet and an iron-containing zinc sulfate solution outlet, and the iron-containing zinc sulfate solution outlet is connected with the iron-containing zinc sulfate solution supply port.
3. The system for removing iron from iron-containing zinc sulfate solution according to 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.
4. The system for removing iron from iron-containing zinc sulfate solution according to claim 1, which comprises 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272512.9U CN203960298U (en) | 2014-05-26 | 2014-05-26 | Iron content solution of zinc sulfate is carried out to the system of deironing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420272512.9U CN203960298U (en) | 2014-05-26 | 2014-05-26 | Iron content solution of zinc sulfate is carried out to the system of deironing |
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| CN203960298U true CN203960298U (en) | 2014-11-26 |
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