CN107190274A - A kind of method that nickel chloride electricity conversion directly prepares nickel hydroxide - Google Patents
A kind of method that nickel chloride electricity conversion directly prepares nickel hydroxide Download PDFInfo
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- CN107190274A CN107190274A CN201710324373.8A CN201710324373A CN107190274A CN 107190274 A CN107190274 A CN 107190274A CN 201710324373 A CN201710324373 A CN 201710324373A CN 107190274 A CN107190274 A CN 107190274A
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- nickel
- nickel hydroxide
- cathode chamber
- nickel chloride
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/24—Halogens or compounds thereof
- C25B1/26—Chlorine; Compounds thereof
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
Abstract
The invention belongs to nickeliferous utilization of resources field, the method that specifically related to a kind of nickel chloride electricity conversion directly prepares nickel hydroxide, purpose is to directly obtain nickel hydroxide product and byproduct hydrogen and chlorine by the electrolytic chlorination nickel aqueous solution, to solve or avoid the problems such as cost present in prior art is high, alkali consumption is big, environmental pollution is serious.The present invention makes nickel chloride be converted into nickel hydroxide, electrolysis process flow therein is short, automaticity is high, it is easy to control using the method for electrolysis, and product purity is high, advantageously reduces production cost；The cathode chamber electrolyte of the present invention is continuously circulated through filter, and filtrate returns to cathode chamber, and the continuous production of nickel hydroxide product can be achieved；The method of the present invention eliminates a large amount of consumption and environmental pollution of ammonia and sodium hydroxide in traditional nickel hydroxide production process.
Description
Technical field
The invention belongs to nickeliferous utilization of resources field, and in particular to a kind of nickel chloride electricity conversion directly prepares nickel hydroxide
Method.
Background technology
Nickel belongs to the feeromagnetic metal of the VIIIth subgroup, with various types of stainless steels, magnetically soft alloy and structural alloy steel form
It is used for jet turbine, electric heating member for oil, chemical industry and machinery manufacturing industry high temperature resistant, oxidation resistant nickel-base alloy and nichrome
Part, resistance and high-temperature service component.Electrotechnical apparatus makees good magnetic material using nickel nickel alumin(i)um alloy.Nickel can be with copper, chromium, nickel, aluminium etc.
Constitute non-ferrous alloy.Nickel powder is the hydrogenation catalyst of chemical reaction.Nickel hydroxide is nickel salt raw material processed, is widely used in alkalescence
The fields such as battery, plating, catalyst.Nickel hydroxide electrode abbreviation nickel electrode, is mainly used in field of chemical power source, is all kinds of
The main positive electrode material of nickel base charging battery.Therefore, simple, the environment-friendly hydrogen-oxygen of research and development purity height, technique
Change nickel production method to have important practical significance and vast potential for future development.
The preparation method of battery ball-shape nickel hydroxide mainly has two kinds of chemical precipitation method and powdered metal methods.Most of lifes
Business men produces ball-shape nickel hydroxide using chemical precipitation method.Patent CN104319394A discloses a kind of spherical hydroxide of pure phase
The preparation method of nickel, patent CN105552350A disclose it is a kind of it is spherical cover ni-mh nickel oxide production technology, be with nickel sulfate,
Sodium hydroxide, liquefied ammonia are raw material, and pure phase ball-shape nickel hydroxide is prepared using chemical precipitation method.Powdered metal methods are divided into metallic nickel
Powder aoxidizes the oxidizing process of generation nickel hydroxide in salpeter solution and nickel powder is filled with to oxygen and water under high pressure to be made in catalyst
With the water under high pressure solution of lower generation nickel hydroxide.
Chemical precipitation method needs to consume substantial amounts of high strength ammonia and sodium hydroxide, and operating environment is poor and causes larger to environment
Air pollution and water pollution；Powdered metal methods raw material is metal nickel powder, and cost is high, and it is very big that salpeter solution has operating environment
Danger also can be to subsequently causing water pollution.
The content of the invention
The purpose for the method that a kind of nickel chloride electricity conversion of the present invention directly prepares nickel hydroxide is by electrolytic chlorination nickel
The aqueous solution directly obtains nickel hydroxide product and byproduct hydrogen and chlorine, to solve or avoid cost present in prior art
The problems such as high, alkali consumption is greatly, environmental pollution is serious.
To achieve the above object, the technical scheme is that：
Step 1：Nickel chloride aqueous solution is electrolysed, the technological parameter of electrolysis is：100 DEG C of 10 DEG C≤temperature ＜, electrolysis
Voltage >=2.2V；
Described electrolysis is carried out in electrolysis system, and electrolysis system includes cationic membrane electrolytic cell and be recovered by filtration to utilize dress
Put；
Described cationic membrane electrolytic cell includes：Cell body 12, cathode chamber 1, anode chamber 2, cation-exchange membrane 3, agitator
4th, dc source 5；
Described being recovered by filtration includes filter 6, drying box 7, the first dissolving tank 8, the first pump 9, second using device
The pump 11 of dissolving tank 10 and second；
Described electrolysis system has the function of stirring and filtering；
Wherein, cell body 12 is internally provided with cation-exchange membrane 3, and 12 points by cell body of cation-exchange membrane 3 is two Room, its
In, be connected with the positive pole of dc source 5 for anode chamber 2, be connected with the negative pole of dc source 5 for cathode chamber 1, in cathode chamber
Agitator 4 is provided with 1, described agitator 4 is stirred by electrode drive；
Filter 6 is provided with the lower section of cathode chamber 1, filter 6 is provided with solid outlet and liquid outlet, filtered
The solid outlet of machine is connected with drying box 7, and the liquid outlet of filter is connected with the second dissolving tank 10, the second dissolving tank 10
Communicated by the second pump 11 with cathode chamber 1；
Opening is set to be connected with the first dissolving tank 8 in the downside of anode chamber 2, the first dissolving tank 8 passes through the first pump 9 and sun
Pole room 2 is communicated；
In described step 1, the mass concentration of described nickel chloride aqueous solution is arbitrary value；
Step 2：The pH value for controlling the electrolyte of cathode chamber 1 in cationic membrane electrolytic cell is 8-11, makes cationic membrane electrolytic cell
Nickel hydroxide is directly generated in cathode chamber 1；
In described step 2, the control method of the electrolyte ph of cathode chamber 1 is in control electric current density or addition sustained release agent
One kind, described sustained release agent is ammoniacal liquor.
Step 3：The cathode chamber 1 of cationic membrane electrolytic cell is stirred, the electrolyte of cathode chamber 1 and nickel hydroxide oriented flow
It is dynamic, filtered by filter 6, separation of solid and liquid, obtain nickel hydroxide and filtrate, filtrate cycle is back to cathode chamber 1 and made
For the electrolyte of cathode chamber 1；The solution of anode chamber 2 is continuously extracted out, and anode chamber 2 is returned to after adjusted concentration；Anodic gas is collected to obtain
Byproduct chlorine, collects cathode gas and obtains byproduct hydrogen；
In described step 3, described stirring is mechanical agitation or electromagnetic agitation, and the effect of the stirring is to suppress groove
The bottom precipitation of body 12；
In described step 3, described directed flow is continuous flowing or intermittent flow, the time of described intermittent flow
It is spaced according to depending on filter plant difference used.
In described step 3, described filtrate adds water to original content Posterior circle and is back to cathode chamber 1, is used as the electricity of cathode chamber 1
Liquid is solved, the electrolyte of anode chamber 2 is added after extracting out after nickel chloride adjustment concentration to initial reaction chlorination nickel concentration, is back to anode chamber
2, realize recycling for nickel chloride.
Step 4：Nickel hydroxide is dried, nickel hydroxide product, product purity >=97% of nickel hydroxide is obtained.
The key reaction that the method that a kind of nickel chloride electricity conversion of the present invention directly prepares nickel hydroxide is related to is as follows：
Anode reaction：2Cl-- 2e=Cl2 (1)
Cathode reaction：2H2O+2e=H2+2OH- (2)
Overall reaction：NiCl2+H2O+CO2=Ni (OH)2↓+H2↑+Cl2↑ (3)
Calcination reaction：Ni(OH)2=Ni2O+H2O↑
Check in, at 25 DEG C, standard production potential V1=-1.3583V, V2=-0.8277V, then EAlways=-2.186V, so,
Tank voltage necessarily be greater than 2.186V.
Compared with prior art, the method that a kind of conversion of nickel chloride of the invention electricity directly prepares nickel hydroxide, with such as
Lower beneficial effect：
1. the present invention makes nickel chloride be converted into nickel hydroxide, electrolysis process flow therein using the method for electrolysis
Short, automaticity is high, it is easy to control, and product purity is high, advantageously reduces production cost.
2. the cathode chamber electrolyte of the present invention is continuously circulated through filter, filtrate returns to cathode chamber, and hydrogen-oxygen can be achieved
Change the continuous production of nickel product.
3. the method for the present invention eliminates ammonia and a large amount of consumption of sodium hydroxide and ring in traditional nickel hydroxide production process
Pollute in border.
Brief description of the drawings
Fig. 1 is the structural representation of electrolysis system of the present invention；
1- cathode chambers；2- anode chambers；3- cation-exchange membranes；4- agitators；5- dc sources；6- filters；7- is done
Dry case；The dissolving tanks of 8- first；The pumps of 9- first；The dissolving tanks of 10- second；The pumps of 11- second；12- cell bodies.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The electrolysis system that following examples are used is the device of description of the invention accompanying drawing 1, and the electrolysis system includes positive
Ion-exchange membrane electrolyzer and it is recovered by filtration and utilizes device；
Described cationic membrane electrolytic cell includes：Cell body 12, cathode chamber 1, anode chamber 2, cation-exchange membrane 3, agitator
4th, dc source 5；
Described being recovered by filtration includes filter 6, drying box 7, the first dissolving tank 8, the first pump 9, second using device
The pump 11 of dissolving tank 10 and second；
Described electrolysis system has the function of stirring and filtering；
Wherein, cell body 12 is internally provided with cation-exchange membrane 3, and 12 points by cell body of cation-exchange membrane 3 is two Room, its
In, be connected with the positive pole of dc source 5 for anode chamber 2, be connected with the negative pole of dc source 5 for cathode chamber 1, in cathode chamber
Agitator 4 is provided with 1, described agitator 4 is stirred by electrode drive；
Filter 6 is provided with the lower section of cathode chamber 1, filter 6 is provided with solid outlet and liquid outlet, filtered
The solid outlet of machine is connected with drying box 7, and the liquid outlet of filter is connected with the second dissolving tank 10, the second dissolving tank 10
Communicated by the second pump 11 with cathode chamber 1；
Opening is set to be connected with the first dissolving tank 8 in the downside of anode chamber 2, the first dissolving tank 8 passes through the first pump 9 and sun
Pole room 2 is communicated.
Embodiment 1
The method that the present embodiment directly prepares nickel hydroxide by nickel chloride electricity conversion, is carried out according to the following steps：
Step 1：Nickel chloride aqueous solution is electrolysed, the technological parameter of electrolysis is：Temperature is 20 DEG C, and the voltage of electrolysis is
3V；
In described step 1, the mass concentration of described nickel chloride aqueous solution is 500g/L；
Step 2：The pH value for controlling the electrolyte of cathode chamber 1 in cationic membrane electrolytic cell is 11.3-11.8, makes cationic membrane electricity
Nickel hydroxide is directly generated in solution groove cathode chamber 1；
In described step 2, the control method of the electrolyte ph of cathode chamber 1 is in control electric current density or addition sustained release agent
One kind, described sustained release agent is ammoniacal liquor.
Step 3：The cathode chamber 1 of cationic membrane electrolytic cell is stirred, the electrolyte of cathode chamber 1 and nickel hydroxide oriented flow
It is dynamic, filtered by filter 6, separation of solid and liquid, obtain nickel hydroxide and filtrate, filtrate cycle is back to cathode chamber 1 and made
For the electrolyte of cathode chamber 1；The solution of anode chamber 2 is continuously extracted out, and anode chamber 2 is returned to after adjusted concentration；Anodic gas is collected to obtain
Byproduct chlorine, collects cathode gas and obtains byproduct hydrogen；
In described step 3, described stirring is mechanical agitation, and the effect of the stirring is that suppressing the bottom of cell body 12 sinks
Form sediment；
In described step 3, described directed flow is continuous flowing or intermittent flow, the time of described intermittent flow
It is spaced according to depending on filter plant difference used；
In described step 3, described filtrate adds water to 500g/L Posterior circles and is back to cathode chamber 1, is used as the electricity of cathode chamber 1
Liquid is solved, the electrolyte of anode chamber 2 is added after extracting out after nickel chloride adjustment concentration to initial reaction chlorination nickel concentration, is back to anode chamber
2, realize recycling for nickel chloride.
Step 4：Nickel hydroxide is dried, nickel hydroxide product is obtained.
Embodiment 2
The method that the present embodiment directly prepares nickel hydroxide by nickel chloride electricity conversion, is carried out according to the following steps：
Step 1：Nickel chloride aqueous solution is electrolysed, the technological parameter of electrolysis is：Temperature is 90 DEG C, and the voltage of electrolysis is
20V；
In described step 1, the mass concentration of described nickel chloride aqueous solution is 1000g/L；
Step 2：The pH value for controlling the electrolyte of cathode chamber 1 in cationic membrane electrolytic cell is 11.3-11.8, makes cationic membrane electricity
Nickel hydroxide is directly generated in solution groove cathode chamber 1；
In described step 2, the control method of the electrolyte ph of cathode chamber 1 is in control electric current density or addition sustained release agent
One kind, described sustained release agent is ammoniacal liquor.
Step 3：The cathode chamber 1 of cationic membrane electrolytic cell is stirred, the electrolyte of cathode chamber 1 and nickel hydroxide oriented flow
It is dynamic, filtered by filter 6, separation of solid and liquid, obtain nickel hydroxide and filtrate, filtrate cycle is back to cathode chamber 1 and made
For the electrolyte of cathode chamber 1；The solution of anode chamber 2 is continuously extracted out, and anode chamber 2 is returned to after adjusted concentration；Anodic gas is collected to obtain
Byproduct chlorine, collects cathode gas and obtains byproduct hydrogen；
In described step 3, described stirring is electromagnetic agitation, and the effect of the stirring is that suppressing the bottom of cell body 12 sinks
Form sediment；
In described step 3, described directed flow is continuous flowing or intermittent flow, the time of described intermittent flow
It is spaced according to depending on filter plant difference used.
In described step 3, described filtrate adds water to 1000g/L Posterior circles and is back to cathode chamber 1, is used as cathode chamber 1
Electrolyte, the electrolyte of anode chamber 2 is added after extracting out after nickel chloride adjustment concentration to initial reaction chlorination nickel concentration, is back to anode
Room 2, realizes recycling for nickel chloride.
Step 4：Nickel hydroxide is dried, nickel hydroxide product is obtained.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
1. a kind of method that nickel chloride electricity conversion directly prepares nickel hydroxide, it is characterised in that step includes：
Step 1：Nickel chloride aqueous solution is electrolysed, the technological parameter of electrolysis is：100 DEG C of 10 DEG C≤temperature ＜, the electricity of electrolysis
Pressure >=2.2V；
Described electrolysis is carried out in electrolysis system, and electrolysis system includes cationic membrane electrolytic cell and be recovered by filtration to utilize device；
Described cationic membrane electrolytic cell includes：Cell body, cathode chamber, anode chamber, cation-exchange membrane, agitator, dc source；It is described
Be recovered by filtration using device include filter, drying box, the first dissolving tank, the first pump, the second dissolving tank and the second pump；Institute
The electrolysis system stated has the function of stirring and filtering；Wherein, cell body is internally provided with cation-exchange membrane, cation-exchange membrane
Cell body is divided into two Room, wherein, be connected with the positive pole of dc source for anode chamber, be connected with the negative pole of dc source for the moon
Pole room, is provided with agitator in cathode chamber, and described agitator is stirred by electrode drive；Set below cathode chamber
Filter is equipped with, filter is provided with solid outlet and liquid outlet, and the solid outlet of filter is connected with drying box,
The liquid outlet of filter is connected with the second dissolving tank, and the second dissolving tank is communicated by the second pump with cathode chamber；In anode chamber
Downside set opening be connected with the first dissolving tank, the first dissolving tank is communicated by the first pump with anode chamber；
Step 2：The pH value for controlling cathode chamber electrolyte in cationic membrane electrolytic cell is 8-11, makes cationic membrane electric tank cathode room
Inside directly generate nickel hydroxide；
Step 3：The cathode chamber of cationic membrane electrolytic cell is stirred, cathode chamber electrolyte and nickel hydroxide directed flow, led to
Cross filter to be filtered, separation of solid and liquid, obtain nickel hydroxide and filtrate, filtrate cycle is back to cathode chamber as cathode chamber
Electrolyte；Anode chamber's solution is continuously extracted out, and anode chamber is returned to after adjusted concentration；Collect anodic gas and obtain byproduct chlorine,
Collect cathode gas and obtain byproduct hydrogen；
Step 4：Nickel hydroxide is dried, nickel hydroxide product is obtained.
2. the method that a kind of nickel chloride electricity conversion according to claim 1 directly prepares nickel hydroxide, it is characterised in that step
In rapid 1, the mass concentration of described nickel chloride aqueous solution is arbitrary value.
3. the method that a kind of nickel chloride electricity conversion according to claim 1 directly prepares nickel hydroxide, it is characterised in that step
In rapid 2, the control method of cathode chamber electrolyte ph is control electric current density or the one kind added in sustained release agent, described sustained release
Agent is ammoniacal liquor.
4. the method that a kind of nickel chloride electricity conversion according to claim 1 directly prepares nickel hydroxide, it is characterised in that step
In rapid 3, described stirring is mechanical agitation or electromagnetic agitation, and the effect of the stirring is to suppress cell body bottom precipitation.
5. the method that a kind of nickel chloride electricity conversion according to claim 1 directly prepares nickel hydroxide, it is characterised in that step
In rapid 3, described directed flow is continuous flowing or intermittent flow, and the time interval of described intermittent flow is according to mistake used
Depending on filter equipment is different.
6. the method that a kind of nickel chloride electricity conversion according to claim 1 directly prepares nickel hydroxide, it is characterised in that step
In rapid 3, described filtrate adds water to original content Posterior circle and is back to cathode chamber, is used as cathode chamber electrolyte, anode chamber's electrolyte
Added after extraction after nickel chloride adjustment concentration to initial reaction chlorination nickel concentration, be back to anode chamber, realize the circulation of nickel chloride
Utilize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710324373.8A CN107190274A (en) | 2017-05-10 | 2017-05-10 | A kind of method that nickel chloride electricity conversion directly prepares nickel hydroxide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710324373.8A CN107190274A (en) | 2017-05-10 | 2017-05-10 | A kind of method that nickel chloride electricity conversion directly prepares nickel hydroxide |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107674459A (en) * | 2017-09-27 | 2018-02-09 | 广西七色珠光材料股份有限公司 | The method that pigment hydrolyzes coating |
| CN108179438A (en) * | 2018-02-23 | 2018-06-19 | 姚莉萍 | A kind of air inlet and outlet device |
| KR102384295B1 (en) * | 2021-11-12 | 2022-05-25 | 인천화학 주식회사 | Apparatus And Method For Recovering Nickel Or Nickel Compound |
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| CN1121964A (en) * | 1994-05-24 | 1996-05-08 | 弗劳恩霍弗实用研究促进协会 | A process for the preparation of metal hydroxide |
| CN1210153A (en) * | 1998-02-27 | 1999-03-10 | 郑州大学 | One-step process of nickle hydroxide electrolysing |
| CN1373818A (en) * | 1999-05-07 | 2002-10-09 | H.C.施塔克股份有限公司 | Method for producing nickel hydroxides |
| JP2015140465A (en) * | 2014-01-29 | 2015-08-03 | 住友金属鉱山株式会社 | Nickel hydroxide production method |
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2017
- 2017-05-10 CN CN201710324373.8A patent/CN107190274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121964A (en) * | 1994-05-24 | 1996-05-08 | 弗劳恩霍弗实用研究促进协会 | A process for the preparation of metal hydroxide |
| CN1210153A (en) * | 1998-02-27 | 1999-03-10 | 郑州大学 | One-step process of nickle hydroxide electrolysing |
| CN1373818A (en) * | 1999-05-07 | 2002-10-09 | H.C.施塔克股份有限公司 | Method for producing nickel hydroxides |
| JP2015140465A (en) * | 2014-01-29 | 2015-08-03 | 住友金属鉱山株式会社 | Nickel hydroxide production method |
Non-Patent Citations (1)
| Title |
|---|
| 王冠: ""电解法制备氢氧化镍和羟基氢氧化镍"", 《中国优秀博硕士学位论文全文数据库（硕士） 工程科技I辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107674459A (en) * | 2017-09-27 | 2018-02-09 | 广西七色珠光材料股份有限公司 | The method that pigment hydrolyzes coating |
| CN108179438A (en) * | 2018-02-23 | 2018-06-19 | 姚莉萍 | A kind of air inlet and outlet device |
| KR102384295B1 (en) * | 2021-11-12 | 2022-05-25 | 인천화학 주식회사 | Apparatus And Method For Recovering Nickel Or Nickel Compound |
| KR20230069781A (en) | 2021-11-12 | 2023-05-19 | 인천화학 주식회사 | Apparatus And Method For Recovering Nickel Compounds and Nickel |
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