CN113957490A - Electrolytic nickel purification and impurity removal reaction tank and method thereof - Google Patents
Electrolytic nickel purification and impurity removal reaction tank and method thereof Download PDFInfo
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- CN113957490A CN113957490A CN202111306721.1A CN202111306721A CN113957490A CN 113957490 A CN113957490 A CN 113957490A CN 202111306721 A CN202111306721 A CN 202111306721A CN 113957490 A CN113957490 A CN 113957490A
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- electrolytic nickel
- tank body
- impurity removal
- opening
- reaction tank
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000012535 impurity Substances 0.000 title claims abstract description 50
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 40
- 238000000746 purification Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 62
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000460 chlorine Substances 0.000 claims abstract description 26
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 26
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 10
- 239000005060 rubber Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 239000002912 waste gas Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 239000002585 base Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 8
- 238000005868 electrolysis reaction Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 229920005549 butyl rubber Polymers 0.000 description 4
- 210000005056 cell body Anatomy 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 3
- 229910052745 lead Inorganic materials 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011550 stock solution 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
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/08—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention relates to the technical field of new liquid purification and impurity removal equipment for electrolytic nickel, and discloses a purification and impurity removal reaction tank for electrolytic nickel and a method thereof, wherein the purification and impurity removal reaction tank comprises a tank body, a tank cover and a flow guide device; the lower end of the groove body is provided with a bottom air pipe, and the side surface of the groove body is provided with a liquid inlet and a liquid outlet; the tank cover is used for sealing an opening at the upper end of the tank body, and the top of the tank cover is provided with a ventilation opening, a chlorine adding pipe, a reagent adding opening and a detection opening; the chlorine adding pipe extends into the inner cavity of the tank body to a depth of less than two thirds, and a pH/ORP tester is arranged at the detection port; the guide device comprises a guide cylinder, the guide cylinder is vertically arranged in the inner cavity of the groove body, and the upper end of the guide cylinder is communicated with the liquid outlet; wherein, the bottom air pipe, the vent, the liquid inlet, the liquid outlet, the chlorine adding pipe and the reagent adding port are all provided with automatic regulating valves. The invention can efficiently remove impurities in a high-flow high-impurity system and obtain pure electrolytic catholyte.
Description
Technical Field
The invention relates to the technical field of new electrolytic nickel liquid purification and impurity removal equipment, in particular to an electrolytic nickel purification and impurity removal reaction tank and a method thereof.
Background
In the nickel cobalt hydrometallurgical industry, three methods are commonly used for producing electrical nickel: firstly, adopting soluble anode diaphragm electrolysis process to produce electrolytic nickel, secondly adopting sulfate electrodeposition process and thirdly adopting chlorination electrodeposition process. The three processes have advantages and disadvantages, wherein the soluble anode diaphragm electrolysis process adopts a classical three-section purification technology, and achieves the purposes of removing impurities and purifying solution by removing iron through neutralization hydrolysis, replacing and depositing copper and removing cobalt through chlorine oxidation. The purity degree of the purified new liquid directly determines the chemical quality and the grade rate of the electrolytic nickel, so that the purification and impurity removal reaction tank is key equipment.
The purifying and impurity-removing reaction tank has more structure, specification and model, a mechanical stirring tank with a matched transmission device, a unpowered reaction tank with a pressurizing and heating kettle and a matched static pipeline mixer or Venturi mixer, and the like, and can simultaneously remove impurities such as Co, Fe, Pb, Zn and the like in the soluble anode diaphragm electrolysis process to obtain qualified electrolytic catholyte.
However, the existing purification and impurity removal reaction tank has unsatisfactory impurity removal effect in a large-flow high-impurity system.
Disclosure of Invention
Based on the technical problems, the invention provides an electrolytic nickel purification and impurity removal reaction tank and a method thereof, which can efficiently remove impurities in a high-flow high-impurity system and obtain pure electrolytic catholyte.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an electrolytic nickel purification and impurity removal reaction tank comprises a tank body, a tank cover and a flow guide device; the lower end of the groove body is provided with a bottom air pipe, and the side surface of the groove body is provided with a liquid inlet and a liquid outlet; the tank cover is used for sealing an opening at the upper end of the tank body, and the top of the tank cover is provided with a ventilation opening, a chlorine adding pipe, a reagent adding opening and a detection opening; the chlorine adding pipe extends into the inner cavity of the tank body to a depth of less than two thirds, and a pH/ORP tester is arranged at the detection port; the guide device comprises a guide cylinder, the guide cylinder is vertically arranged in the inner cavity of the groove body, and the upper end of the guide cylinder is communicated with the liquid outlet; wherein, the bottom air pipe, the vent, the liquid inlet, the liquid outlet, the chlorine adding pipe and the reagent adding port are all provided with automatic regulating valves.
Further, the guide shell also comprises a tray and a base, the tray is arranged at the upper end of the guide shell, and the base is arranged at the lower end of the guide shell; the upper end of the tray is of an umbrella-shaped cap structure, and the side surface of the tray is communicated with the liquid outlet through a liquid discharge pipe; the base contacts with the bottom of the tank body, and a plurality of openings are arranged on the side surface of the base.
Furthermore, the guide shell is fixedly arranged in the inner cavity of the groove body through a plurality of groups of fixing structures, and each fixing structure comprises a plurality of pull rods which are distributed along the circumferential direction of the guide shell; one end of the pull rod is fixedly connected with the wall of the guide cylinder tube, and the other end of the pull rod is fixedly connected with the inner wall of the groove body.
Furthermore, a double-end lead screw is arranged on the pull rod, and the length of the pull rod can be adjusted through the double-end lead screw.
Furthermore, the slot cover is made of steel lining rubber.
Further, the tank body is made of a composite lining material which comprises reinforced concrete, rubber and ceramic bricks from outside to inside in sequence.
Further, the cell body includes a straight section of thick bamboo and a toper section of thick bamboo, and a toper section of thick bamboo butt joint is installed at a straight section of thick bamboo lower extreme.
Furthermore, the bottom of the conical cylinder is also provided with a drain hole, and a lining ball valve is arranged at the drain hole.
Furthermore, a manhole is arranged on the groove cover.
The invention also discloses an electrolytic nickel purification and impurity removal method, which is based on the electrolytic nickel purification and impurity removal reaction tank and comprises the following steps:
step one, opening a ventilation opening and a liquid inlet, adding an electrolytic anolyte mixed solution for electrolytic nickel reaction into a tank body through the liquid inlet, and closing the liquid inlet until the liquid level of the electrolytic anolyte mixed solution reaches two thirds of the height of the tank body;
opening a reagent feeding port and a bottom air pipe, feeding the reagent, introducing compressed air, and detecting the pH value and the potential value of the mixed solution by using a pH/ORP tester, wherein the reagent is sodium hydroxide;
step three, after the pH value of the mixed solution reaches the target pH value of 4.8, opening a chlorine adding pipe and introducing chlorine;
step four, after the potential value of the mixed liquid reaches a target value of 1070mV, closing the chlorine adding pipe and opening the liquid outlet, so that pure electrolytic catholyte generated after the reaction is discharged from the liquid outlet through the diversion device;
and step five, after the electrolytic catholyte in the tank body is discharged, discharging residual waste gas in the tank body through the ventilation opening, and then closing the ventilation opening.
Compared with the prior art, the invention has the beneficial effects that:
the invention is suitable for processing large-flow high-impurity solution by the purification and impurity removal reaction tank, can realize automatic interlocking control and continuous and stable production, can remove impurity elements such as Co, Fe, Pb, Zn and the like in the electrolytic anolyte or external mixed solution, obtains pure electrolytic catholyte and meets the requirement of producing high-quality electrolytic nickel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. Wherein:
FIG. 1 is a schematic diagram of the structure of an electrolytic nickel purification and impurity removal reaction tank.
Fig. 2 is a top view of the slot cover.
FIG. 3 is a top view of the reaction tank for purifying and decontaminating electrolytic nickel (removing the tank cover).
FIG. 4 is a schematic flow chart of the electrolytic nickel purification and impurity removal method.
The device comprises a groove cover 1, an umbrella-shaped cap 2, a tray 3, a groove body 4, a guide cylinder 5, a pull rod 6, a double-head screw 7, a base 8, a bottom air pipe 9, a chlorine adding pipe 10, a liquid inlet 11, a vent 12, a detection port 13, a reagent adding port 14, a manhole 15, a liquid discharge pipe 16 and a liquid outlet 17.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Fig. 1 to 3 are schematic structural diagrams of an electrolytic nickel purification and impurity removal reaction tank according to some embodiments of the present application, and the electrolytic nickel purification and impurity removal reaction tank according to the present application will be described below with reference to fig. 1 to 3. It should be noted that fig. 1 to 3 are only examples, and the specific shape and structure of the electrolytic nickel purification and impurity removal reaction tank are not limited.
Referring to fig. 1 to 3, in some embodiments, an electrolytic nickel purification and impurity removal reaction tank includes a tank body 4, a tank cover 1 and a flow guide device; the lower end of the tank body 4 is provided with a bottom air pipe 9, and the side surface of the tank body 4 is provided with a liquid inlet 11 and a liquid outlet 17; the tank cover 1 is used for sealing an opening at the upper end of the tank body 4, and the top of the tank cover 1 is provided with a vent 12, a chlorine adding pipe 10, a reagent adding port 14 and a detection port 13; the chlorine adding pipe 10 extends into the inner cavity of the tank body 4 to a depth of less than two thirds, and a pH/ORP tester is arranged at the detection port 13; the flow guide device comprises a flow guide cylinder 5, the flow guide cylinder 5 is vertically arranged in the inner cavity of the groove body 4, and the upper end of the flow guide cylinder 5 is communicated with the liquid outlet 17; wherein, automatic regulating valves are arranged on the bottom air pipe 9, the vent 12, the liquid inlet 11, the liquid outlet 17, the chlorine adding pipe 10 and the reagent adding port 14.
Wherein, the bottom air pipe 9, the vent 12, the liquid inlet 11, the liquid outlet 17, the chlorine gas feeding pipe 10 and the reagent feeding port 14 are all provided with automatic adjusting valves, and a plurality of automatic adjusting valves and the pH/ORP tester can be controlled in a linkage manner, thereby realizing the automatic control of the electrolytic nickel purification and impurity removal process.
Wherein, the chlorine adding pipe 10 extends into the inner cavity of the groove body 4 to a depth of less than two thirds, and the aim is to obtain better reaction depth.
Preferably, the bottom air pipe 9, the vent 12, the liquid inlet 11, the liquid outlet 17, the chlorine gas adding pipe 10 and the reagent adding port 14 are all provided with flange interfaces so as to be conveniently butted with various pipelines through the flange interfaces.
Preferably, the slot cover 1 is fixedly connected with the slot body 4 through a flange.
Specifically, the vent 12 generally employs natural ventilation. Preferably, in order to discharge the waste gas in the tank body 4 as soon as possible, the vent 12 can be connected to an induced draft fan, and the waste gas in the tank body 4 is discharged through the induced draft fan, purified and absorbed and then discharged up to the standard.
Preferably, the flow guide device is made of glass fiber reinforced plastic.
Preferably, the chlorine gas feeding pipe 10 and the bottom air pipe 9 are made of steel lining rubber.
In some embodiments, the draft tube 5 further comprises a tray 3 and a base 8, the tray 3 is mounted at the upper end of the draft tube 5, and the base 8 is mounted at the lower end of the draft tube 5; the upper end of the tray 3 is in an umbrella-shaped cap 2 structure, and the side surface of the tray 3 is communicated with a liquid outlet 17 through a liquid discharge pipe 16; the base 8 is contacted with the bottom of the tank body 4, and a plurality of openings are arranged on the side surface of the base.
Wherein, the tray 3 and the umbrella-shaped cap 2 structure thereof can prevent splashing during air lifting and liquid discharging.
Wherein, the base 8 contacts with the bottom of the groove body 4 to support the guide shell 5, and the side surface of the base 8 is provided with a plurality of openings, thus the liquid discharge is not influenced.
In some embodiments, the guide shell 5 is fixedly installed in the inner cavity of the tank body 4 through a plurality of groups of fixing structures, and each fixing structure comprises a plurality of pull rods 6 distributed along the circumferential direction of the guide shell 5; one end of a pull rod 6 is fixedly connected with the pipe wall of the guide cylinder 5, and the other end of the pull rod 6 is fixedly connected with the inner wall of the groove body 4.
The pull rod 6 is used for fixing the guide shell 5, so that the guide shell 5 can be fixedly arranged in the groove body 4.
Preferably, the tie rod 6 is made of titanium material in order to avoid the strength of the tie rod 6 and prevent the corrosion thereof.
Preferably, a double-end lead screw 7 is arranged on the pull rod 6, and the length of the pull rod 6 can be adjusted by the double-end lead screw 7.
Wherein, adjust pull rod 6 length through double-end lead screw 7 and can extend pull rod 6 length, make 6 one end of pull rod support tight draft tube 5 pipe wall, its other end supports tight cell body 4 inner wall, and the effort of the pull rod 6 of rethread circumference arrangement supports the reinforcement to draft tube 5 and cell body 4 inner wall.
Further, the slot cover 1 is made of steel lining rubber.
Preferably, the rubber of the inner liner of the slot cover 1 is pre-vulcanized butyl rubber, and the pre-vulcanized butyl rubber has the advantages of good physical and mechanical properties, aging resistance and good heat resistance. In addition, the pre-vulcanized butyl rubber has excellent resistance to various corrosive media such as acid, alkali and salt, and has the advantages of good air tightness and water tightness.
In some embodiments, the tank 4 is made of a composite lining material, which is reinforced concrete, rubber and ceramic bricks in sequence from outside to inside.
Preferably, the rubber is a pre-vulcanized butyl rubber. Specifically, the rubber thickness of the inner liner was 5 mm for use as a barrier layer.
Preferably, the ceramic brick is acid-resistant and temperature-resistant.
In some embodiments, the tank 4 comprises a straight cylinder and a tapered cylinder, and the tapered cylinder is installed at the lower end of the straight cylinder in a butt joint mode.
Preferably, the bottom of the conical cylinder is also provided with a drain hole, and a lining ball valve is arranged at the drain hole.
Wherein, the lining ball valve of evacuation mouth department is in the closed condition at ordinary times, if when meeting the overhaul of the equipments, opens lining ball valve, discharges remaining solution and thick liquids, conveniently overhauls clearance cell body 4.
In some embodiments, the slot cover 1 is provided with a manhole 15.
Wherein the manhole 15 means an open structure for a person to get in and out of the equipment for installation, inspection and safety inspection. Mainly comprises a short cylinder section (or a short pipe), a flange and a manhole 15 cover with a handle.
Referring to fig. 4, in some embodiments, the present application further discloses an electrolytic nickel purification and impurity removal method, based on the above electrolytic nickel purification and impurity removal reaction tank, including:
step one, opening a vent hole 12 and a liquid inlet 11, adding an electrolytic anolyte mixed solution for electrolytic nickel reaction into a tank body 4 through the liquid inlet 11, and closing the liquid inlet 11 until the liquid level of the electrolytic anolyte mixed solution reaches two thirds of the height of the tank body 4;
preferably, the vent 12 is natural ventilation.
Specifically, the electrolytic anolyte mixed solution refers to a mixed solution of the electrolytic anolyte and other impurities.
Opening a reagent feeding port 14 and a bottom air pipe 9, feeding the reagent, introducing compressed air, and detecting the pH value and the potential value of the mixed solution by using a pH/ORP tester, wherein the reagent is sodium hydroxide;
wherein, the compressed air introduced through the bottom air pipe 9 is used for providing sufficient power for the full reaction of the mixed solution, the chlorine and the reagent, so that the chlorine and the mixed solution are fully reacted under the stirring of the air;
wherein, the sodium hydroxide reagent is used for adjusting the pH value of the solution in the tank body 4;
step three, after the pH value of the mixed solution reaches the target pH value of 4.8, opening a chlorine adding pipe 10 and introducing chlorine;
step four, after the potential value of the mixed liquid reaches the target value of 1070mV, closing the chlorine adding pipe 10 and opening the liquid outlet 17, so that the pure electrolytic catholyte generated after the reaction is discharged from the liquid outlet 17 through the diversion device;
and step five, after the electrolytic catholyte in the tank body 4 is discharged, discharging residual waste gas in the tank body 4 through the vent 12, and then closing the vent 12.
In this embodiment, the raw materials of the method for purifying and removing impurities from electrolytic nickel are the anolyte after electrolysis and the external stock solution containing nickel, and the anolyte is purified and removed by the impurity removal reaction tank to remove impurity elements such as Co, Fe, Pb, Zn, etc. from the anolyte, and the solution after impurity removal is pure new solution which can be pumped into the electrolysis system again to produce electrolytic nickel. The new liquid enters an electrolysis system and is called as catholyte, the purity degree of the catholyte determines the quality and the grade rate of electrolytic nickel, and the purity degree of the catholyte is not only related to key control parameters, but also related to the structure and the material of an impurity removal reaction tank. The method for purifying and removing the impurities in the electrolytic nickel can meet the requirements of working conditions, so that the system can stably run for a long period, and meanwhile, high-quality new liquid can be produced to produce high-quality electrolytic nickel.
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only used for clearly illustrating the verification process of the invention and are not used for limiting the patent protection scope of the invention, which is defined by the claims, and all the equivalent structural changes made by using the contents of the description and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an electrolytic nickel purifies edulcoration reaction tank which characterized in that includes:
the device comprises a tank body, a bottom air pipe is arranged at the lower end of the tank body, and a liquid inlet and a liquid outlet are arranged on the side surface of the tank body;
the groove cover is used for sealing an opening at the upper end of the groove body, and the top of the groove cover is provided with a ventilation opening, a chlorine adding pipe, a reagent adding opening and a detection opening; the chlorine adding pipe extends into the inner cavity of the tank body to a depth of less than two thirds, and a pH/ORP tester is arranged at the detection port;
the flow guide device comprises a flow guide cylinder, the flow guide cylinder is vertically arranged in the inner cavity of the tank body, and the upper end of the flow guide cylinder is communicated with the liquid outlet;
the bottom air pipe, the ventilation opening, the liquid inlet, the liquid outlet, the chlorine adding pipe and the reagent adding opening are all provided with automatic regulating valves.
2. The electrolytic nickel purification impurity removal reaction tank according to claim 1, characterized in that:
the guide shell also comprises a tray and a base, wherein the tray is arranged at the upper end of the guide shell, and the base is arranged at the lower end of the guide shell; the upper end of the tray is of an umbrella-shaped cap structure, and the side surface of the tray is communicated with the liquid outlet through a liquid discharge pipe; the base contacts with the bottom of the tank body, and a plurality of openings are formed in the side face of the base.
3. The electrolytic nickel purification impurity removal reaction tank according to claim 1, characterized in that:
the guide cylinder is fixedly arranged in the inner cavity of the groove body through a plurality of groups of fixing structures, and each fixing structure comprises a plurality of pull rods which are distributed along the circumferential direction of the guide cylinder; one end of the pull rod is fixedly connected with the wall of the guide cylinder tube, and the other end of the pull rod is fixedly connected with the inner wall of the groove body.
4. The electrolytic nickel purifying impurity removing reaction tank according to claim 3, characterized in that:
be equipped with the double-end lead screw on the pull rod, the double-end lead screw is adjustable pull rod length.
5. The electrolytic nickel purification impurity removal reaction tank according to claim 1, characterized in that:
the slot cover is made of steel lining rubber.
6. The electrolytic nickel purification impurity removal reaction tank according to claim 1, characterized in that:
the tank body is made of a composite lining material, and the composite lining material comprises reinforced concrete, rubber and ceramic bricks from outside to inside in sequence.
7. The electrolytic nickel purification impurity removal reaction tank as claimed in claim 1, wherein the tank body comprises:
a straight cylinder;
the conical cylinder is installed at the lower end of the straight cylinder in a butt joint mode.
8. The electrolytic nickel purifying impurity removing reaction tank according to claim 7, characterized in that:
the conical cylinder bottom is also provided with a drain hole, and a lining ball valve is arranged at the drain hole.
9. The electrolytic nickel purification impurity removal reaction tank according to claim 1, characterized in that:
and a manhole is arranged on the groove cover.
10. An electrolytic nickel purification impurity removal method based on the electrolytic nickel purification impurity removal reaction tank of any one of claims 1 to 9, characterized by comprising the following steps:
step one, opening a ventilation opening and a liquid inlet, adding an electrolytic anolyte mixed solution for electrolytic nickel reaction into a tank body through the liquid inlet, and closing the liquid inlet until the liquid level of the electrolytic anolyte mixed solution reaches two thirds of the height of the tank body;
opening a reagent feeding port and a bottom air pipe, feeding the reagent, introducing compressed air, and detecting the pH value and the potential value of the mixed solution by using a pH/ORP tester, wherein the reagent is sodium hydroxide;
step three, after the pH value of the mixed solution reaches the target pH value of 4.8, opening a chlorine adding pipe and introducing chlorine;
step four, after the potential value of the mixed liquid reaches a target value of 1070mV, closing the chlorine adding pipe and opening the liquid outlet, so that pure electrolytic catholyte generated after the reaction is discharged from the liquid outlet through the diversion device;
and step five, after the electrolytic catholyte in the tank body is discharged, discharging residual waste gas in the tank body through the ventilation opening, and then closing the ventilation opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111306721.1A CN113957490B (en) | 2021-11-05 | 2021-11-05 | Electrolytic nickel purifying and impurity removing reaction tank and method thereof |
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Effective date of registration: 20240417 Address after: 737104 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Applicant after: Jinchuan Group Nickel Cobalt Co.,Ltd. Country or region after: China Address before: 737104 No. 98, Jinchuan Road, Jinchuan District, Jinchang City, Gansu Province Applicant before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |
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