CN115287450A - Efficient continuous iron removal system and using method thereof - Google Patents
Efficient continuous iron removal system and using method thereof Download PDFInfo
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- CN115287450A CN115287450A CN202211002132.9A CN202211002132A CN115287450A CN 115287450 A CN115287450 A CN 115287450A CN 202211002132 A CN202211002132 A CN 202211002132A CN 115287450 A CN115287450 A CN 115287450A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000003647 oxidation Effects 0.000 claims abstract description 55
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 55
- 238000002386 leaching Methods 0.000 claims abstract description 39
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 30
- 239000011701 zinc Substances 0.000 claims abstract description 30
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000000779 smoke Substances 0.000 claims abstract description 6
- 238000011010 flushing procedure Methods 0.000 claims abstract 2
- 230000007246 mechanism Effects 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000001556 precipitation Methods 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003546 flue gas Substances 0.000 claims description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 4
- 229910001448 ferrous ion Inorganic materials 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 25
- 230000008569 process Effects 0.000 description 13
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 11
- 229910052598 goethite Inorganic materials 0.000 description 10
- 239000002893 slag Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910052595 hematite Inorganic materials 0.000 description 4
- 239000011019 hematite Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- NJWNEWQMQCGRDO-UHFFFAOYSA-N indium zinc Chemical compound [Zn].[In] NJWNEWQMQCGRDO-UHFFFAOYSA-N 0.000 description 2
- 238000012994 industrial processing Methods 0.000 description 2
- 229910052935 jarosite Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910006540 α-FeOOH Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction 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
- 150000002500 ions Chemical class 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/02—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of iron removal, in particular to a high-efficiency continuous iron removal system, which comprises a zinc leaching system, an oxidation system and an alkaline leaching system, wherein the zinc leaching system, the oxidation system and the alkaline leaching system sequentially pass through by solution, and the iron removal system comprises: the zinc leaching system is used for leaching the solution by introducing zinc-containing smoke; the oxidation system is used for oxidizing by flushing oxygen-enriched air and hydrogen peroxide, and the application method of the high-efficiency continuous iron removal system is further provided.
Description
Technical Field
The invention relates to the technical field of iron removal, in particular to a high-efficiency continuous iron removal system and a using method thereof.
Background
Non-ferrous metal ores are usually associated with iron compounds, hydrometallurgical iron tends to bring non-ferrous metals together into solution, and in order to obtain a high quality metal product, the iron in the solution must first be removed.
The basic principle of iron removal by purification in aqueous solution is to precipitate and separate iron ions, and the currently common main methods are as follows: (1) iron hydroxide precipitation, i.e. the iron in solution is Fe (OH) 3 The method mainly has the problem of difficult solid-liquid separation, particularly when the solution contains high iron, the Fe (OH) 3 colloid is easy to block a plate-and-frame filter press, so that the production process is difficult to carry out; (2) the hematite method is used for iron precipitation, so that iron in a solution is added into slag in the form of hematite, the iron is invented by Japan Tonghe mining company in 1968-1970, the iron is precipitated by adopting a're-leaching-hematite method' in Japan Nippon Kingma zinc-indium smelting company in 1972, and a domestic Yunnan Yunxin Wenshanshan zinc-indium smelting limited company is also building a wet zinc smelting production line based on a hematite method iron precipitation technical route. The method needs expensive titanium materials to manufacture high-pressure equipment and an additional SO2 liquefaction plant, has high investment cost and has a stage of separately reducing iron; (3) and (3) precipitating iron by a goethite method, so that the iron in the solution enters slag in a goethite form. It was developed by the company Vieille Montagne from the old mountain of Belgium in 1965 to 1969 and was put into production in the factory of Balen (Balen) in 1971. The goethite method has the advantages of simple process equipment, low iron removal cost, good filtering performance due to the fact that iron sediments are in a crystalline state and the like, but a large amount of industrial practices find that the goethite method has the prominent problems that the crystal form of precipitated iron slag is mixed and difficult to control, the iron content of the precipitated iron slag is low, the high-value recycling is difficult and the like; (4) jarosite processes, based on the removal of iron from solutions in the presence of ammonium or alkali metal ions, by forming jarosite from the solution into the slag, but also by introducing into the solution, for example, K + 、Na + Or NH 4+ And plasma impurity ions.
In summary, the above solution iron precipitation methods eachThe method has advantages and disadvantages, and partially solves the problems of iron separation and solution purification in the hydrometallurgy process, but some technical problems exist in practical application, and iron resource utilization still needs to be further researched and solved. In particular to deironing by a goethite method, researches have been carried out to show that the iron precipitation by the goethite method comprises a series of complex physical and chemical reaction processes, including ferrous ion oxidation, ferric ion hydrolysis, neutralization reaction and the like. These chemical reaction processes are affected by factors such as temperature, seed crystals, agitation speed, degree of catalysis, component concentrations, and pH. The reduction, oxidation and crystallization of iron in solution involve a series of chemical and physical reactions of mutual coupling of gas, liquid and solid phases, and the reaction mechanism is very complex. A large amount of research work is carried out by experts and scholars at home and abroad, and a series of research achievements are obtained in the aspects of optimization of the reaction conditions of the goethite iron precipitation, improvement of iron precipitation equipment and the like. The current literature-induced main process conditions for precipitating iron by goethite method are usually pH3.5, temperature 85 deg.C, fe in solution 3+ The concentration is less than 1g/L, the allowable floating range is very narrow, and the parameter control requirement is extremely strict. However, in large-scale production, as the goethite iron precipitation process is generally formed by connecting a plurality of continuous iron precipitation reactors in series, a large time lag exists between a reaction solution inlet and a reaction solution outlet, the iron precipitation reactors are large in size, and Fe at different positions in the solution in the iron precipitation process 2+ /Fe 3+ The concentration, the pH value and the temperature are nonlinear and time-varying, real-time regulation and control of the solution property are difficult to realize according to the existing personnel experience regulation and control mode, the stable achievement of the process parameters for forming goethite sediment is very difficult, the crystal form of the goethite sediment iron slag is often difficult to stably control, the iron grade of the produced iron slag is low, and the recycling and full-quantization high-value recycling of the iron slag are difficult to realize.
Disclosure of Invention
The invention aims to solve the defects in the background art and provides an efficient continuous iron removal system and a using method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that: a high-efficiency iron removal system, which comprises a zinc leaching system, an oxidation system and an alkaline leaching system through which a solution passes in sequence,
wherein:
the zinc leaching system is used for leaching the solution by introducing zinc-containing smoke;
oxygen-enriched air and hydrogen peroxide are injected into the oxidation system for oxidation.
Preferably, the zinc leaching system comprises a first tank body, a first feeding pipe and a first exhaust pipe which are arranged on the upper surface of the first tank body, a first exhaust pipe arranged at the lower end of the first tank body, and a first vent pipe arranged on the outer surface of the first tank body and close to the lower end, wherein the first exhaust pipe sends liquid to the oxidation system.
Preferably, the alkaline leaching system comprises a second tank body, a second feeding pipe and a second exhaust pipe which are arranged on the upper surface of the second tank body, a second discharging pipe arranged at the lower end of the second tank body, a second vent pipe arranged on the outer surface of the second tank body and close to the lower end, and an adding pipe arranged on the outer surface of the second tank body and close to the upper end.
Preferably, the oxidation system comprises a reaction kettle and a guide cylinder mechanism which is fixedly arranged on the inner side of the reaction kettle and has the same axis, wherein a vortex mechanism penetrates through the inner side of the guide cylinder mechanism, and a flow divider is arranged at the lower end of the vortex mechanism;
the guide cylinder mechanism enables air inside and outside the reaction kettle to be communicated, and the vortex mechanism generates vortex flow from top to bottom on the inner side of the guide cylinder mechanism.
Preferably, the reaction kettle comprises a kettle body, a cover body fixedly installed at the upper end of the kettle body, a liquid inlet pipe arranged on the upper surface of the cover body, a discharging pipe and a feeding pipe arranged on the side surface of the kettle body, and a maintenance window installed on the outer surface of the kettle body.
Preferably, the guide mechanism comprises a cylinder body fixedly penetrating through the upper surface of the cover body and a widening cylinder fixedly connected to the lower end of the cylinder body, two air inlet bent pipes are fixedly connected to the side surface of the cylinder body, and the air inlet bent pipes extend upwards and penetrate through the upper surface of the cover body.
Preferably, the vortex mechanism comprises a rotating shaft rotatably arranged on the inner side of the barrel through a connecting bearing, an impeller fixedly connected with the lower end of the rotating shaft, a driving wheel fixedly connected with the upper end of the rotating shaft, and a motor fixedly arranged on the upper edge of the reaction kettle, wherein a driving belt is sleeved on an output shaft of the motor and the driving wheel together.
Preferably, the shunt is including setting up a plurality of shunt tubes at a plurality of shunt tubes of set shell lower surface in the barrel below, fixed embedding, the end opening has been seted up to the lower extreme of shunt tubes, the side mouth has been seted up to the surface of shunt tubes, a plurality of limit mouth has been seted up to the side of set shell, the fretwork mouth has been seted up to the upper surface of set shell, the interior limit fixedly connected with a plurality of link of fretwork mouth, the tip fixed connection of link is at the border of impeller.
The use method of the high-efficiency iron removal system is also provided, and the use method is carried out by adopting the system, and comprises the following steps:
s1, introducing the original solution into the inner side of a zinc leaching system, and leaching copper through zinc-containing flue gas;
s2, introducing the treatment liquid in the step S1 into the inner side of an oxidation system, and injecting oxygen-enriched air and hydrogen peroxide for oxidation to oxidize ferrous ions;
and S3, sending the treatment liquid in the S2 into an alkaline leaching system, adding alkaline and zinc-containing flue gas, carrying out oxidation precipitation, and then removing iron.
Compared with the prior art, the invention has the following beneficial effects:
1. this scheme utilizes industrial tail gas at deironing in-process two degrees and assists, does benefit to the environmental protection, and resource utilization is reasonable abundant, has adopted the efficient oxidation mode for the oxidation and the precipitation of iron have improved industrial processing efficiency.
2. The industrial tail gas is utilized to assist in deironing in the deironing process, the effect of full utilization of resources is achieved, the environment is protected, zinc-containing smoke dust is introduced while alkaline materials are added into a final alkaline leaching system, the purposes of oxidation and precipitation are achieved, only the generated iron slag and solution need to be separated through filtering equipment in the later period, resources are fully utilized, and the deironing is thorough and convenient, and the cost is low.
3. The motor drives the driving wheel to rotate through the driving belt, so that the rotating shaft rotates to drive the impeller below the rotating shaft to form a negative pressure area to discharge liquidThe body and air suction downwards, at this moment, two return bends that admit air inhale a large amount of air or oxygen, the inboard of dish shell is gone into in the gas-liquid flow, continue to flow to the shunt tubes in, discharge through end opening and side mouth department, simultaneously, the inboard gas-liquid of dish shell is also followed limit mouth and is located the blowout, reach the effect of reposition of redundant personnel, for the mode of traditional pipeline oxidation, the scope of admitting air of this mechanism is wider, make the oxidation air feed more even, make a large amount of oxygen get into mixed solution, fe among the mixed solution 2+ The precipitate of alpha-FeOOH is generated by rapid oxidation, and the Fe in the mixed solution can be obtained in 1-2 hours 2+ The whole oxidation process is more uniform and complete through oxidation and precipitation.
Drawings
FIG. 1 is a schematic view of an efficient continuous iron removal system according to the present invention;
FIG. 2 is a structural diagram of an oxidation system in an efficient continuous iron removal system according to the present invention;
FIG. 3 is a sectional view of an oxidation system in a high efficiency continuous iron removal system according to the present invention;
FIG. 4 is another sectional view of the oxidation system in a high efficiency continuous iron removal system of the present invention;
FIG. 5 is an enlarged view of the portion A in FIG. 4 in the high-efficiency continuous iron removal system according to the present invention;
FIG. 6 is a schematic view of a guide roller mechanism in the high-efficiency continuous iron removal system according to the present invention;
FIG. 7 is a sectional view of the disc shell of the oxidation system in the high efficiency continuous iron removal system of the present invention;
FIG. 8 is a schematic view of the oxidation system at the disk shell in an efficient continuous iron removal system according to the present invention;
FIG. 9 is another view of the disc shell of the oxidation system in the high-efficiency continuous iron removal system according to the present invention.
1. A zinc leaching system; 11. a first tank; 12. a first feed tube; 13. a first breather pipe; 14. a first exhaust pipe; 15. a first discharging pipe; 2. an oxidation system; 21. a reaction kettle; 211. a kettle body; 212. a cover body; 213. a liquid inlet pipe; 214. a discharging pipe; 215. feeding pipes; 216. maintaining the window; 22. a guide cylinder mechanism; 221. a barrel; 222. widening the cylinder;
223. an air inlet bent pipe; 23. an eddy current mechanism; 231. a rotating shaft; 232. connecting a bearing;
233. a driving wheel; 234. a transmission belt; 235. a motor; 236. an impeller; 24. a flow divider; 241. a disc housing; 242. opening a hollow; 243. a connecting frame; 244. a shunt tube; 245. a bottom opening; 246. a side port; 247. a side opening; 3. an alkaline leaching system; 31. a second tank; 32. a second feed pipe; 33. a second vent pipe; 34. a second exhaust pipe; 35. an addition pipe; 36. a second discharge conduit.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art.
The high-efficiency iron removal system shown in fig. 1-9 comprises a zinc leaching system 1, an oxidation system 2 and an alkaline leaching system 3, wherein the zinc leaching system, the oxidation system and the alkaline leaching system sequentially pass through solutions, and the iron removal system comprises:
the zinc leaching system 1 is used for leaching the solution by introducing zinc-containing smoke;
the oxidation system 2 is filled with oxygen-enriched air and hydrogen peroxide for oxidation.
The zinc leaching system 1 comprises a first tank body 11, a first feeding pipe 12 and a first exhaust pipe 14 which are arranged on the upper surface of the first tank body 11, a first exhaust pipe 15 arranged at the lower end of the first tank body 11, and a first vent pipe 13 arranged on the outer surface of the first tank body 11 and close to the lower end, wherein the first exhaust pipe 15 sends liquid to the oxidation system 2, the first vent pipe 13 is used for introducing flue gas and exhausting the flue gas through the first exhaust pipe 14, the first feeding pipe 12 is used for entering raw liquid, and the first exhaust pipe 15 exhausts the treated liquid.
The alkaline leaching system 3 comprises a second tank 31, a second feeding pipe 32 and a second exhaust pipe 34 which are arranged on the upper surface of the second tank 31, a second discharging pipe 36 which is arranged on the lower end of the second tank 31, a second vent pipe 33 which is arranged on the outer surface of the second tank 31 and is close to the lower end, and an adding pipe 35 which is arranged on the outer surface of the second tank 31 and is close to the upper end, wherein the second feeding pipe 32 is used for introducing mixed liquid, the second vent pipe 33 is used for introducing flue gas, the adding pipe 35 is used for adding alkaline solution, the second exhaust pipe 34 is used for exhausting gas, and the second discharging pipe 36 is used for discharging treated liquid and iron sediment.
The oxidation system 2 comprises a reaction kettle 21 and a guide cylinder mechanism 22 which is fixedly arranged on the inner side of the reaction kettle 21 and has the same axis, wherein a vortex mechanism 23 penetrates through the inner side of the guide cylinder mechanism 22, and a flow divider 24 is arranged at the lower end of the vortex mechanism 23; the guide cylinder mechanism 22 makes the air inside and outside the reaction kettle 21 communicated, and the vortex mechanism 23 generates a vortex flow from top to bottom on the inner side of the guide cylinder mechanism 22.
The guide mechanism 22 includes a cylinder 221 fixedly penetrating the upper surface of the cover 212 and a widening cylinder 222 fixedly connected to the lower end of the cylinder 221, two air inlet bent pipes 223 are fixedly connected to the side surface of the cylinder 221, and the air inlet bent pipes 223 extend upward and penetrate the upper surface of the cover 212 to suck air, or may be connected to an oxygen supply line.
The eddy current mechanism 23 includes a rotating shaft 231 rotatably mounted inside the barrel 221 through a connecting bearing 232, an impeller 236 fixedly connected to the lower end of the rotating shaft 231, a driving wheel 233 fixedly connected to the upper end of the rotating shaft 231, and a motor 235 fixedly mounted on the upper edge of the reaction vessel 21, wherein a driving belt 234 is sleeved on the output shaft of the motor 235 and the driving wheel 233, and provides power for the rotation of the rotating shaft 231.
The shunt 24 is including setting up the dish shell 241 in barrel 221 below, fixed embedding is at a plurality of shunt tubes 244 of dish shell 241 lower surface, end opening 245 has been seted up to shunt tubes 244's lower extreme, side opening 246 has been seted up to shunt tubes 244's surface, a plurality of limit 247 has been seted up to the side of dish shell 241, fretwork 242 has been seted up to the upper surface of dish shell 241, the interior limit fixedly connected with a plurality of link 243 of fretwork 242, the tip fixed connection of link 243 is at the border of impeller 236, can play the effect of reposition of redundant personnel, promote the intensive mixing of liquid and gas.
The industrial tail gas is utilized to perform auxiliary iron removal in the iron removal process, the effect of full utilization of resources is achieved, the environment is protected, zinc-containing smoke dust is introduced while alkaline materials are added into the final alkaline leaching system 3, the purposes of oxidation and precipitation are achieved, only the generated iron slag and solution need to be separated through filtering equipment in the later period, resources are fully utilized, and the iron removal is thorough and convenient, and the cost is low. The motor 235 drives the driving wheel 233 to rotate through the driving belt 234, and further the rotating shaft 231 rotates, the impeller 236 below the driving shaft is driven, a negative pressure area is formed, liquid and air are sucked downwards, at the moment, the two air inlet bent pipes 223 suck a large amount of air or oxygen, the air and the liquid flow into the inner side of the disc shell 241, the liquid flows into the shunt pipe 244 continuously, the liquid is discharged from the bottom opening 245 and the side opening 246, meanwhile, the air and the liquid inside the disc shell 241 are sprayed out from the side opening 247, the shunt effect is achieved, compared with the traditional pipeline oxidation mode, the air inlet range of the mechanism is wider, the oxidation air supply is more uniform, a large amount of oxygen enters the mixed solution, fe in the mixed solution 2+ The precipitate of alpha-FeOOH is generated by rapid oxidation, and the Fe in the mixed solution can be obtained in 1-2 hours 2+ The whole oxidation process is more uniform and full through oxidation and precipitation.
The use method of the high-efficiency iron removal system is implemented by adopting the system, and comprises the following steps:
s1, introducing the original solution into the inner side of a zinc leaching system 1, and leaching copper through zinc-containing flue gas;
s2, introducing the treatment liquid in the step S1 into the oxidation system 2, and injecting oxygen-enriched air and hydrogen peroxide for oxidation to oxidize ferrous ions;
and S3, sending the treatment liquid in the S2 into an alkaline leaching system 3, adding an alkaline material and a zinc-containing material, performing oxidation precipitation, and then removing iron.
This scheme utilizes industrial tail gas at deironing in-process two degrees and assists, does benefit to the environmental protection, and resource utilization is reasonable abundant, has adopted the efficient oxidation mode for the oxidation and the precipitation of iron have improved industrial processing efficiency.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a high-efficient deironing system which characterized in that: including zinc leaching system (1), oxidation system (2) and alkaline leaching system (3) that solution passes through in proper order, wherein:
the zinc leaching system (1) is used for leaching the solution by introducing zinc-containing smoke;
the oxidation system (2) is filled with oxygen-enriched air and hydrogen peroxide for oxidation.
2. The system for removing iron in high efficiency according to claim 1, wherein: the zinc leaching system (1) comprises a first tank body (11), a first feeding pipe (12) and a first exhaust pipe (14) which are arranged on the upper surface of the first tank body (11), a first exhaust pipe (15) which is arranged at the lower end of the first tank body (11), and a first vent pipe (13) which is arranged on the outer surface of the first tank body (11) and is close to the lower end, wherein liquid is sent out to the oxidation system (2) through the first exhaust pipe (15).
3. The system of claim 1, wherein the iron removal system comprises: the alkaline leaching system (3) comprises a second tank body (31), a second feeding pipe (32) and a second exhaust pipe (34) which are arranged on the upper surface of the second tank body (31), a second discharging pipe (36) which is arranged at the lower end of the second tank body (31), a second vent pipe (33) which is arranged on the outer surface of the second tank body (31) and is close to the lower end, and an adding pipe (35) which is arranged on the outer surface of the second tank body (31) and is close to the upper end.
4. The system for removing iron in high efficiency according to claim 1, wherein: the oxidation system (2) comprises a reaction kettle (21) and a guide cylinder mechanism (22) which is fixedly arranged on the inner side of the reaction kettle (21) and has the same axis, wherein a vortex mechanism (23) penetrates through the inner side of the guide cylinder mechanism (22), and a flow divider (24) is arranged at the lower end of the vortex mechanism (23);
the guide cylinder mechanism (22) enables air inside and outside the reaction kettle (21) to be communicated, and the vortex mechanism (23) generates a vortex from top to bottom on the inner side of the guide cylinder mechanism (22).
5. The system for removing iron in high efficiency according to claim 4, wherein: the reaction kettle (21) comprises a kettle body (211), a cover body (212) fixedly installed at the upper end of the kettle body (211), a liquid inlet pipe (213) arranged on the upper surface of the cover body (212), a discharging pipe (214) and a feeding pipe (215) arranged on the side surface of the kettle body (211), and a maintenance window (216) installed on the outer surface of the kettle body (211).
6. The system for removing iron in high efficiency according to claim 5, wherein: the guide cylinder mechanism (22) comprises a cylinder body (221) fixedly penetrating through the upper surface of the cover body (212) and a widening cylinder (222) fixedly connected to the lower end of the cylinder body (221), two air inlet bent pipes (223) are fixedly connected to the side surface of the cylinder body (221), and the air inlet bent pipes (223) extend upwards and penetrate through the upper surface of the cover body (212).
7. The system for removing iron in high efficiency according to claim 6, wherein: the eddy current mechanism (23) comprises a rotating shaft (231) rotatably installed on the inner side of the barrel body (221) through a connecting bearing (232), an impeller (236) fixedly connected with the lower end of the rotating shaft (231), a driving wheel (233) fixedly connected with the upper end of the rotating shaft (231), and a motor (235) fixedly installed on the upper edge of the reaction kettle (21), wherein a driving belt (234) is sleeved on an output shaft of the motor (235) and the driving wheel (233) together.
8. The system for removing iron in high efficiency according to claim 7, wherein: shunt (24) including set up at a set of shell (241), a plurality of shunt tubes (244) of fixed embedding at a set of shell (241) lower surface of barrel (221) below, end opening (245) have been seted up to the lower extreme of shunt tubes (244), side mouth (246) have been seted up to the surface of shunt tubes (244), a plurality of limit mouth (247) have been seted up to the side of a set of shell (241), fretwork mouth (242) have been seted up to the upper surface of a set of shell (241), interior limit fixedly connected with a plurality of link (243) of fretwork mouth (242), the tip fixed connection of link (243) is at the border of impeller (236).
9. The use method of the high-efficiency iron removal system is characterized by comprising the following steps: using the system of claim 1, comprising the steps of:
s1, introducing the original solution into the inner side of a zinc leaching system (1), and leaching copper through zinc-containing flue gas;
s2, introducing the treatment liquid in the S1 into the inner side of an oxidation system (2), and flushing oxygen-enriched air and hydrogen peroxide for oxidation to oxidize ferrous ions;
and S3, sending the treatment liquid in the S2 into an alkaline leaching system (3), adding alkaline and zinc-containing flue gas for oxidation and precipitation, and then removing iron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211002132.9A CN115287450A (en) | 2022-08-21 | 2022-08-21 | Efficient continuous iron removal system and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211002132.9A CN115287450A (en) | 2022-08-21 | 2022-08-21 | Efficient continuous iron removal system and using method thereof |
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| CN202211002132.9A Pending CN115287450A (en) | 2022-08-21 | 2022-08-21 | Efficient continuous iron removal system and using method thereof |
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