CN104004915B - Iron content solution of zinc sulfate is carried out the system of deironing - Google Patents
Iron content solution of zinc sulfate is carried out the system of deironing Download PDFInfo
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- CN104004915B CN104004915B CN201410225129.2A CN201410225129A CN104004915B CN 104004915 B CN104004915 B CN 104004915B CN 201410225129 A CN201410225129 A CN 201410225129A CN 104004915 B CN104004915 B CN 104004915B
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Abstract
The invention discloses a kind of system that iron content solution of zinc sulfate is carried out deironing.This system includes vertical response still, and this vertical response still has vertical response still body, iron content solution of zinc sulfate supply mouth, the first steam inlet, the first oxygen intake, the first deironing rear slurry outlet；Horizontal reacting still, this horizontal reacting still has horizontal reacting still body, the first deironing rear slurry supply mouth, the second steam inlet, the second oxygen intake.The system that iron content solution of zinc sulfate carries out deironing according to embodiments of the present invention is by being used in combination vertical response still and horizontal reacting still, can effectively solve the production that in iron removal, in still, scale problems causes to interrupt, ensure the continuous and steady operation produced, thus significantly improving de-ironing efficiency and utilization rate of equipment and installations.
Description
Technical field
The invention belongs to chemical industry and field of metallurgy, specifically, the present invention relates to a kind of system that iron content solution of zinc sulfate is carried out deironing.
Background technology
Ferrum would generally enter solution with Impure forms in the wet smelting process such as zinc, in order to obtain purer zinc product, ferrum in solution can be precipitated by smelting process before Product recycling operation and remove, the method generally adopted has neutralisation, Jarosite process, goethite process and iron oxide process, wherein neutralisation, Jarosite process, separation of iron in goethite form slag iron content is all relatively low, scum generally enters tailings reservoir for piling, the product that iron oxide process obtains is higher due to iron content, can as cement, the raw material of ironmaking or production iron oxide red product, it is possible not only to solve problem of environmental pollution, the response rate of metallic zinc can also be effectively improved, increase Business Economic Benefit.Carry out at high temperature under high pressure yet with iron oxide process so that the continuous-stable of production is very big on production cost impact.
Therefore, existing iron removal technology is further improved.
Summary of the invention
It is contemplated that at least solve one of technical problem of existence in prior art.For this, it is an object of the present invention to propose a kind of system that iron content solution of zinc sulfate carries out deironing, the production that this system can effectively solve owing to the problems such as fouling cause is interrupted, ensure the continuous and steady operation produced, and significantly improve the utilization rate of equipment, it is possible not only to effectively solve the occupation of land of scum Tailings Dam and problem of environmental pollution simultaneously, but also the response rate of metallic zinc can be effectively improved, increase Business Economic Benefit.
In one aspect of the invention, the present invention proposes a kind of system that iron content solution of zinc sulfate carries out deironing, and this system includes:
Vertical response still；
Vertical response still body, described vertical response still this internal limits the first deironing reaction compartment, for carrying out the first deironing process in described first deironing reaction compartment, and obtain liquid after the first deironing；
Iron content solution of zinc sulfate supply mouth, described iron content solution of zinc sulfate supply mouth is arranged on described vertical response still body, for by iron content solution of zinc sulfate supply to described first deironing reaction compartment；
First steam inlet, described first steam inlet is arranged on described vertical response still body, for by steam supply to described first deironing reaction compartment；
First oxygen intake, described first oxygen intake is arranged on described vertical response still body, for by oxygen supply to described first deironing reaction compartment；
First deironing rear slurry outlet, described first deironing rear slurry outlet is arranged on described vertical response still body, for described first deironing rear slurry is discharged described first deironing reaction compartment；
Horizontal reacting still；
Horizontal reacting still body, described horizontal reacting still is originally internal limits the second deironing reaction compartment, for described first deironing rear slurry being carried out the second deironing process in described second deironing reaction compartment, and obtains the second deironing rear slurry；
First deironing rear slurry supply mouth, described first deironing rear slurry supply mouth is arranged on described horizontal reacting still body, and is connected with described first deironing rear slurry outlet, for by described first deironing rear slurry supply to described second deironing reaction compartment；
Second steam inlet, described second steam inlet is arranged on described horizontal reacting still body, for by steam supply to described second deironing reaction compartment；And
Second oxygen intake, described second oxygen intake is arranged on described horizontal reacting still body, for by oxygen supply to described first deironing reaction compartment.
The system that iron content solution of zinc sulfate carries out deironing according to embodiments of the present invention is by being used in combination vertical response still and horizontal reacting still, can effectively solve in iron removal scale problems in still, thus significantly improving de-ironing efficiency and utilization rate of equipment and installations in iron content solution of zinc sulfate, it is possible not only to effectively solve scum Tailings Dam take up an area and problem of environmental pollution simultaneously, but also the response rate of metallic zinc can be effectively improved, increase Business Economic Benefit.
It addition, the system that iron content solution of zinc sulfate carries out deironing according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, the described system that iron content solution of zinc sulfate carries out deironing farther includes: preheating device, described preheating device supplies mouth with described iron content solution of zinc sulfate and is connected, for before described iron content solution of zinc sulfate is supplied to vertical response still, in advance described iron content solution of zinc sulfate is preheated, preferably described iron content solution of zinc sulfate is previously heated to 80～100 degrees Celsius, more preferably 90 degrees Celsius.Thus, it is possible to significantly improve the first deironing treatment effeciency.
In some embodiments of the invention, in described first deironing reaction compartment, described first deironing process be temperature be 170～200 degrees Celsius, oxygen partial pressure carries out 0.5～1 hour when being 0.2～0.4MPa completing.Thus, it is possible to improve the first deironing treatment effeciency further.
In some embodiments of the invention, in described second deironing reaction compartment, described second deironing process be temperature be 170～200 degrees Celsius, oxygen partial pressure carries out 2～3 hours when being 0.2～0.4MPa completing.Thus, it is possible to significantly improve the second deironing treatment effeciency.
In some embodiments of the invention, the described system that iron content solution of zinc sulfate carries out deironing farther includes: flash distillation processes device, described flash distillation processes device and is connected with described horizontal reacting still, for described second deironing rear slurry being carried out flash distillation decrease temperature and pressure process, and obtain the second deironing rear slurry processed through flash distillation；And filtration wash unit, described filtration wash unit processes device with described flash distillation and is connected, for described the second deironing rear slurry processed through flash distillation is filtered washing, in order to obtain iron oxide product and the solution after deironing purifies.Thus, it is possible to realize efficiently separating of iron oxide product and solution.
In some embodiments of the invention, the described system that iron content solution of zinc sulfate carries out deironing includes multiple vertical response still and multiple horizontal reacting still, wherein, each horizontal reacting still is connected with at least one vertical response still respectively, and between described vertical response still and described horizontal reacting still, it is provided with control valve, is used for the connection and the closedown that control between described vertical response still and described horizontal reacting still.Thus, it is possible to improve de-ironing efficiency further.
The additional aspect of the present invention and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the system structure schematic diagram that iron content solution of zinc sulfate carries out deironing according to an embodiment of the invention；
Fig. 2 is the system structure schematic diagram that iron content solution of zinc sulfate carries out deironing according to another embodiment of the present invention；
Fig. 3 is the method flow schematic diagram utilizing the system that iron content solution of zinc sulfate carries out deironing of one embodiment of the invention that iron content solution of zinc sulfate carries out deironing；
Fig. 4 is the method flow schematic diagram utilizing the system that iron content solution of zinc sulfate carries out deironing of another embodiment of the present invention that iron content solution of zinc sulfate carries out deironing.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " first ", " second " only for descriptive purposes, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more these features.In describing the invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention as the case may be.
In one aspect of the invention, the present invention proposes a kind of system that iron content solution of zinc sulfate carries out deironing.Below with reference to Fig. 1-2, the system that iron content solution of zinc sulfate carries out deironing of the embodiment of the present invention is described in detail.According to embodiments of the invention, this system includes:
Vertical response still 100: according to embodiments of the invention, this vertical response still 100 has vertical response body 10.According to embodiments of the invention, in vertical response still body 10, limit the first deironing reaction compartment, for carrying out the first deironing process in the first deironing reaction compartment, such that it is able to obtain the first deironing rear slurry.According to a particular embodiment of the invention, in iron content solution of zinc sulfate, zinc concentration can not higher than 100g/L.According to embodiments of the invention, the condition that the first deironing processes is not particularly restricted, and according to a particular embodiment of the invention, it can be 170～200 degrees Celsius in temperature that the first deironing processes, oxygen partial pressure carries out 0.5～1 hour when being 0.2～0.4MPa.In this step, concrete, the ferrum in iron content solution of zinc sulfate enters solid phase with ferrum oxide, is simultaneously generated sulphuric acid, and sulphuric acid can return to leach operation and continues with, and the reaction equation of main generation is: 2FeSO4+0.5O2+2H2O=Fe2O3+2H2SO4。
According to embodiments of the invention, vertical response still body 10 is provided with iron content solution of zinc sulfate supply mouth 11, first steam inlet the 12, first oxygen intake 13 and the first deironing rear slurry outlet 14.According to a particular embodiment of the invention, iron content solution of zinc sulfate supply mouth 11 is for by iron content solution of zinc sulfate supply to the first deironing reaction compartment, first steam inlet 12 is for by steam supply to the first deironing reaction compartment, first oxygen intake 13 is for by oxygen supply to described first deironing reaction compartment, and the first deironing rear slurry outlet 14 is for discharging the first deironing reaction compartment by the first obtained deironing rear slurry.
Horizontal reacting still 200: according to embodiments of the invention, horizontal reacting still 200 has horizontal reacting still body 20.According to embodiments of the invention, in horizontal reacting still body 20, limiting the second deironing reaction compartment, for the first deironing rear slurry being carried out the second deironing process in the second deironing reaction compartment, and obtaining the second deironing rear slurry.According to embodiments of the invention, the condition that the second deironing processes is not particularly restricted, and according to a particular embodiment of the invention, it can be 170～200 degrees Celsius in temperature that the second deironing processes, oxygen partial pressure carries out 2～3 hours when being 0.2～0.4MPa.In this step, equally, ferrum enters solid phase with ferrum oxide, is simultaneously generated sulphuric acid, and sulphuric acid can return to leach operation and continues with.
According to embodiments of the invention, horizontal reacting still body 20 is provided with the first deironing rear slurry supply mouth the 21, second steam inlet 22 and the second oxygen intake 23.According to a particular embodiment of the invention, the first deironing rear slurry supply mouth 21 is connected with the first deironing rear slurry outlet 14.According to a particular embodiment of the invention, first deironing rear slurry supply mouth 21 is for by iron content solution of zinc sulfate supply to the second deironing reaction compartment, second steam inlet 22 is for by steam supply to the second deironing reaction compartment, and the second oxygen intake 23 is for by oxygen supply to the second deironing reaction compartment.
The system that iron content solution of zinc sulfate carries out deironing according to embodiments of the present invention is by being used in combination vertical response still and horizontal reacting still, can effectively solve the production stage casing that in iron removal, in still, scale problems causes, ensure the continuous and steady operation produced, thus significantly improving iron content solution of zinc sulfate de-ironing efficiency and utilization rate of equipment and installations, the quantity of slag that this system produces is little, iron content is high, carry other valuable metal amounts secretly few, slag is without storing up, can as by-product sale, it is possible not only to solve problem of environmental pollution, the response rate of metallic zinc can also be effectively improved, increase Business Economic Benefit.
Below with reference to Fig. 2, the system that iron content solution of zinc sulfate carries out deironing of the embodiment of the present invention is described further.According to embodiments of the invention, this system farther includes:
Preheating device 300: according to embodiments of the invention, preheating device 300 supplies mouth 11 with iron content solution of zinc sulfate and is connected, for, before being supplied to vertical response still by iron content solution of zinc sulfate, in advance iron content solution of zinc sulfate being carried out the pre-heat treatment.According to embodiments of the invention, the temperature that iron content solution of zinc sulfate carries out the pre-heat treatment is not particularly restricted, according to a particular embodiment of the invention, before iron content solution of zinc sulfate is supplied to vertical response still, iron content solution of zinc sulfate can be preheated to 80～100 degrees Celsius, for instance iron content solution of zinc sulfate can be preheated to 90 degrees Celsius.
Flash distillation processes device 400: according to embodiments of the invention, and flash distillation processes device 400 and is connected with horizontal reacting still 200, for the second deironing rear slurry carries out flash distillation decrease temperature and pressure process, and obtains the second deironing rear slurry processed through flash distillation.In this step, High Temperature High Pressure serosity being down to normal pressure 100 degrees Celsius, is simultaneously generated a large amount of indirect steam, indirect steam can be recycled as thermal source.
Filtration wash unit 500: according to embodiments of the invention, filtration wash unit 500 processes device 400 with flash distillation and is connected, for the process second deironing rear slurry being filtered washing through flash distillation, to obtain iron oxide product and the iron content solution of zinc sulfate through purifying respectively, wherein, iron oxide product can, as cement, steel-making or the raw material use producing iron oxide red product, be possible not only to solve problem of environmental pollution, the response rate of metallic zinc can also be effectively improved, increase Business Economic Benefit.
The system that iron content solution of zinc sulfate carries out deironing according to embodiments of the present invention can include multiple vertical response still and multiple horizontal reacting still, wherein, each horizontal reacting still is connected with at least one vertical response still respectively, and between vertical response still and described horizontal reacting still, it is provided with control valve, is used for the connection and the closedown that control between vertical response still and described horizontal reacting still.
Understand in order to convenient, utilize the method that iron content solution of zinc sulfate is carried out deironing by the system that iron content solution of zinc sulfate carries out deironing of the embodiment of the present invention to be described in detail below with reference to Fig. 3-4 couples.According to embodiments of the invention, the method includes:
S100: the first deironing processes
According to embodiments of the invention, iron content solution of zinc sulfate is supplied to vertical response still, and in vertical response still, introduce steam and oxygen, in order in vertical response still, carry out the first deironing process, such that it is able to obtain the first deironing rear slurry.According to a particular embodiment of the invention, in iron content solution of zinc sulfate, zinc concentration can not higher than 100g/L.According to embodiments of the invention, the condition that the first deironing processes is not particularly restricted, and according to a particular embodiment of the invention, it can be 170～200 degrees Celsius in temperature that the first deironing processes, oxygen partial pressure carries out 0.5～1 hour when being 0.2～0.4MPa.In this step, concrete, the ferrum in iron content solution of zinc sulfate enters solid phase with ferrum oxide, is simultaneously generated sulphuric acid, and sulphuric acid can return to leach operation and continues with, and the reaction equation of main generation is: 2FeSO4+0.5O2+2H2O=Fe2O3+2H2SO4。
S200: the second deironing processes
According to embodiments of the invention, above-mentioned the first obtained deironing rear slurry is supplied to horizontal reacting still, and in horizontal reacting still, introduces steam and oxygen, in order in horizontal reacting still, carry out the second deironing process, such that it is able to obtain the second deironing rear slurry.According to embodiments of the invention, the condition that the second deironing processes is not particularly restricted, and according to a particular embodiment of the invention, it can be 170～200 degrees Celsius in temperature that the second deironing processes, oxygen partial pressure carries out 2～3 hours when being 0.2～0.4MPa.In this step, equally, ferrum enters solid phase with ferrum oxide, is simultaneously generated sulphuric acid, and sulphuric acid can return to leach operation and continues with.
Iron content solution of zinc sulfate is carried out the method for deironing by vertical response still and horizontal reacting still being used in combination by the system that iron content solution of zinc sulfate carries out deironing utilizing the embodiment of the present invention, can effectively solve the production stage casing that in iron removal, in still, scale problems causes, ensure the continuous and steady operation produced, thus significantly improving de-ironing efficiency and utilization rate of equipment and installations, the quantity of slag that the method produces is little, iron content is high, carry other valuable metal amounts secretly few, slag is without storing up, can as by-product sale, it is possible not only to solve problem of environmental pollution, the response rate of metallic zinc can also be effectively improved, increase Business Economic Benefit.
It is described further below with reference to Fig. 4 method that iron content solution of zinc sulfate is carried out deironing by the system that iron content solution of zinc sulfate carries out deironing utilizing the embodiment of the present invention.According to embodiments of the invention, the method farther includes:
S300: the pre-heat treatment
According to embodiments of the invention, before being supplied to vertical response still by iron content solution of zinc sulfate, iron content solution of zinc sulfate is carried out the pre-heat treatment.According to embodiments of the invention, the temperature that iron content solution of zinc sulfate carries out the pre-heat treatment is not particularly restricted, according to a particular embodiment of the invention, before iron content solution of zinc sulfate is supplied to vertical response still, iron content solution of zinc sulfate can be preheated to 80～100 degrees Celsius, for instance iron content solution of zinc sulfate can be preheated to 90 degrees Celsius.Inventor have found that, before by iron content solution of zinc sulfate supply to vertical response still, iron content solution of zinc sulfate is carried out the pre-heat treatment to this temperature range and can significantly improve follow-up first deironing treatment effeciency.
S400: flash distillation processes
According to embodiments of the invention, above-mentioned the second obtained deironing rear slurry is carried out flash distillation decrease temperature and pressure process, such that it is able to obtain the second deironing rear slurry processed through flash distillation.In this step, High Temperature High Pressure serosity being down to normal pressure 100 degrees Celsius, is simultaneously generated a large amount of indirect steam, indirect steam can be recycled as thermal source.
S500: filtration washing
According to embodiments of the invention, above-mentioned obtained the second deironing rear slurry through flash distillation process is filtered washing, such that it is able to obtain iron oxide product and the solution after deironing purifies respectively, wherein, iron oxide product can as cement, steel-making or the raw material use producing iron oxide red product, it is possible not only to solve problem of environmental pollution, it is also possible to be effectively improved the response rate of metallic zinc, increases Business Economic Benefit.
Below with reference to specific embodiment, present invention is described, it is necessary to explanation, and these embodiments are only illustrative, and do not limit the present invention in any way.
Embodiment
Iron content solution of zinc sulfate is processed by the system that iron content solution of zinc sulfate carries out deironing according to embodiments of the present invention:
Wherein, this iron content solution of zinc sulfate is liquid after the heavy indium of zinc abstraction.
In 1m3Vertical response still and 3m3In horizontal reacting still, with 1m3The flow of/h adds iron content solution of zinc sulfate, and solution is containing zinc 100g/L, and iron content 30g/L is (with Fe2+Meter), pH value is 3, maintains reaction temperature 185 DEG C, and after heavy ferrum, solution is through flash distillation, filtration washing, it is thus achieved that liquid (filtrate) after iron-containing product (precipitation) and heavy ferrum, and liquid retrieval system after heavy ferrum is recycled.
Drawing containing iron oxide product iron content 60～68% by measuring, containing zinc, < 0.5%, < 0.8%, it can sell as cement, iron mine or produce iron oxide red product further sulfur-bearing.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principles of the invention and objective, the scope of the present invention is limited by claim and equivalent thereof.
Claims (6)
1. the system that iron content solution of zinc sulfate is carried out deironing, it is characterised in that including:
Vertical response still；Described vertical response still has:
Vertical response still body, described vertical response still is originally internal limits the first deironing reaction compartment, for carrying out the first deironing process in described first deironing reaction compartment, and obtains the first deironing rear slurry；
Iron content solution of zinc sulfate supply mouth, described iron content solution of zinc sulfate supply mouth is arranged on described vertical response still body, for by iron content solution of zinc sulfate supply to described first deironing reaction compartment；
First steam inlet, described first steam inlet is arranged on described vertical response still body, for by steam supply to described first deironing reaction compartment；
First oxygen intake, described first oxygen intake is arranged on described vertical response still body, for by oxygen supply to described first deironing reaction compartment；
First deironing rear slurry outlet, described first deironing rear slurry outlet is arranged on described vertical response still body, for described first deironing rear slurry is discharged described first deironing reaction compartment；
Horizontal reacting still；Described horizontal reacting still has:
Horizontal reacting still body, described horizontal reacting still is originally internal limits the second deironing reaction compartment, for described first deironing rear slurry being carried out the second deironing process in described second deironing reaction compartment, and obtains the second deironing rear slurry；
First deironing rear slurry supply mouth, described first deironing rear slurry supply mouth is arranged on described horizontal reacting still body, and is connected with described first deironing rear slurry outlet, for by described first deironing rear slurry supply to described second deironing reaction compartment；
Second steam inlet, described second steam inlet is arranged on described horizontal reacting still body, for by steam supply to described second deironing reaction compartment；And
Second oxygen intake, described second oxygen intake is arranged on described horizontal reacting still body, for oxygen is supplied to described first deironing reaction compartment,
Preheating device, described preheating device supplies mouth with described iron content solution of zinc sulfate and is connected, for, before being supplied to vertical response still by described iron content solution of zinc sulfate, in advance described iron content solution of zinc sulfate being preheated；
Flash distillation processes device, and described flash distillation processes device and is connected with described horizontal reacting still, for described second deironing rear slurry carries out flash distillation decrease temperature and pressure process, and obtains the second deironing rear slurry processed through flash distillation；And
Filtration wash unit, described filtration wash unit processes device with described flash distillation and is connected, for described the second deironing rear slurry processed through flash distillation is filtered washing, in order to obtain iron oxide product and the solution after deironing purifies respectively.
2. system according to claim 1, it is characterised in that described iron content solution of zinc sulfate is previously heated to 80～100 degrees Celsius.
3. system according to claim 2, it is characterised in that described iron content solution of zinc sulfate is previously heated to 90 degrees Celsius.
4. system according to claim 1, it is characterised in that in described first deironing reaction compartment, described first deironing process be temperature be 170～200 degrees Celsius, oxygen partial pressure carries out 0.5～1 hour when being 0.2～0.4MPa completing.
5. system according to claim 1, it is characterised in that in described second deironing reaction compartment, described second deironing process be temperature be 170～200 degrees Celsius, oxygen partial pressure carries out 2～3 hours when being 0.2～0.4MPa completing.
6. system according to claim 1, it is characterised in that include multiple vertical response still and multiple horizontal reacting still,
Wherein, each horizontal reacting still is connected with at least one vertical response still respectively, and is provided with control valve between described vertical response still and described horizontal reacting still, is used for the connection and the closedown that control between described vertical response still and described horizontal reacting still.
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| CN104004914B (en) * | 2014-05-26 | 2016-06-01 | 中国恩菲工程技术有限公司 | Iron-containing liquor is carried out the system of deironing |
| CN106011468A (en) * | 2016-06-13 | 2016-10-12 | 云南祥云飞龙再生科技股份有限公司 | Method for removing ferrous ions from iron-containing zinc sulfate solution by using industrial enriched oxygen |
| CN106566926B (en) * | 2016-11-22 | 2019-03-15 | 格林美（江苏）钴业股份有限公司 | A kind of deironing apparatus and low temperature continuous deferrization technique |
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