CN116119743A - Method for reducing sulfate radical in ball nickel product - Google Patents
Method for reducing sulfate radical in ball nickel product Download PDFInfo
- Publication number
- CN116119743A CN116119743A CN202310230427.XA CN202310230427A CN116119743A CN 116119743 A CN116119743 A CN 116119743A CN 202310230427 A CN202310230427 A CN 202310230427A CN 116119743 A CN116119743 A CN 116119743A
- Authority
- CN
- China
- Prior art keywords
- stirring
- liquid alkali
- 30min
- nickel
- clarifying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 24
- 239000003513 alkali Substances 0.000 claims abstract description 25
- 239000000047 product Substances 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000005406 washing Methods 0.000 claims abstract description 17
- 239000006228 supernatant Substances 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 101000601610 Drosophila melanogaster Heparan sulfate N-sulfotransferase Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- -1 hydroxide ions Chemical class 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/04—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a method for reducing sulfate radical in a ball nickel product, which comprises the following steps: 1) Adding liquid alkali into spherical nickel hydroxide, wherein the concentration of the liquid alkali is 20-40%, the adding amount is 0.3-0.5L/kg, stirring for at least 1h, clarifying for 30min, and discharging supernatant; (2) Adding liquid alkali with concentration of 20-70% and adding amount of 0.3-0.8L/kg for secondary stirring for at least 1 hr, clarifying for 30min, and discharging supernatant; (3) Adding 60 ℃ pure water with the addition amount of 8-16L/kg, and washing for at least 1h.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a method for reducing sulfate radical in a ball nickel product.
Background
In the chemical precipitation reaction, there is a small amount of SO 4 2- Ions and Na+ ions are adsorbed on nickel hydroxide, ni (OH) 2 Middle SO 4 2- An increase in the content of the same impurities causes Ni (OH) 2 The crystal structure of (a) is changed, the specific discharge capacity is reduced, and the electrode polarization is increased. Thus, ni (OH) is removed 2 On-board embedded and adsorbed SO 4 2- The content will optimize the spherical Ni (OH) 2 The performance is improved, and the product quality is improved. Ordinary centrifugal washing mode can only wash Ni (OH) 2 Surface sulfate cannot thoroughly wash the sulfate embedded inside.
Disclosure of Invention
Aiming at the technical problems, the invention provides a method for reducing sulfate radical in a spherical nickel product.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a method of reducing sulfate in a nickel ball product comprising the steps of:
(1) Adding liquid alkali into spherical nickel hydroxide, wherein the concentration of the liquid alkali is 20-40%, the adding amount is 0.3-0.5L/kg, stirring for at least 1h, clarifying for 30min, and discharging supernatant;
(2) Adding liquid alkali with concentration of 20-70% and adding amount of 0.3-0.8L/kg for secondary stirring for at least 1 hr, clarifying for 30min, and discharging supernatant;
(3) Adding 60 ℃ pure water with the addition amount of 8-16L/kg, and washing for at least 1h.
Wherein in the step (1), stirring is carried out for 1-2h.
Wherein in the step (2), stirring is carried out for 1-2h.
Wherein, in the step (3), the washing is carried out for 1-2h.
The beneficial effects of the invention are as follows:
(1) The invention can reduce sulfate radical in the ball nickel product to below 0.25 percent which is lower than national standard by 0.5 percent.
(2) The impurities such as sulfate can be increasedThe crystal structure of Ni (OH) 2 is changed, the discharge capacity is reduced, and the electrode polarization is increased. Ordinary centrifugal washing mode can only wash Ni (OH) 2 The sulfate on the surface can not thoroughly wash the sulfate embedded in the interior, and the method removes Ni (OH) by adopting a mode of alkali intrusion washing and pure water washing 2 The sulfate in the product is analyzed by XRD and a scanning electron microscope to obtain the sample with unchanged structure and smooth appearance after alkali invasion.
(3) SO in the current washing ball nickel products 4 2- The method mainly comprises a pure water washing method and a sodium carbonate solution washing method, wherein the pure water washing method can only wash off SO attached to the surface of the ball nickel 4 2- Part of SO embedded during synthesis 4 2- Cannot be washed out, which will lead to SO in the product 4 2- Higher, the washing with sodium carbonate solution will introduce new impurity CO 3 2- The invention uses 20-40% aqueous alkali to wash the ball nickel product twice, and fully stirs under alkaline condition, OH-in the aqueous alkali can embed SO into the ball nickel 4 2- The internal structure of the spherical nickel product contains hydroxide ions, SO that the original structure is not changed by the introduction of OH < - >, and SO is attached to the surface of the spherical nickel 4 2- Washing with pure water, SO that SO in the ball nickel product can be effectively reduced 4 2- And new impurities are not introduced, and the main taste of the ball nickel product is improved.
Detailed Description
The present invention will be further described in detail with reference to the following embodiments, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Example 1
A method of reducing sulfate in a nickel ball product comprising the steps of:
(1) Adding liquid alkali into spherical nickel hydroxide, wherein the concentration of the liquid alkali is 20%, the adding amount is 0.3L/kg, stirring for 1h, clarifying for 30min, and discharging supernatant;
(2) Adding liquid alkali with concentration of 20% and adding amount of 0.3L/kg for secondary stirring for 1 hr, clarifying for 30min, and discharging supernatant;
(3) Pure water at 60℃was added in an amount of 8L/kg, and the mixture was washed for 1 hour.
Example 2
A method of reducing sulfate in a nickel ball product comprising the steps of:
(1) Adding liquid alkali into spherical nickel hydroxide, wherein the concentration of the liquid alkali is 40%, the adding amount is 0.5L/kg, stirring for 2 hours, clarifying for 30 minutes, and discharging supernatant;
(2) Adding liquid alkali with the concentration of 70% and the addition amount of 0.8L/kg for 2 hours, clarifying for 30 minutes, and discharging supernatant;
(3) Pure water at 60℃was added in an amount of 16L/kg, and the mixture was washed for 2 hours.
Example 3
A method for reducing sulfate radical in a ball nickel product, which comprises the following specific steps:
(1) Adding 2kg of spherical nickel hydroxide into a 2.5L beaker, adding 1L of 30% liquid alkali, stirring for 1h, and clarifying for 30min to obtain supernatant;
(2) Adding 0.3L of 20% liquid alkali again, stirring for 1h, clarifying for 30min, and discharging supernatant;
(3) Adding 12L of pure water at 60 ℃ and stirring for 30min, wherein the content of spherical nickel sulfate radical is lower than 0.25 percent after washing by using the method.
Example 4
A method for reducing sulfate radical in a ball nickel product, which comprises the following specific steps:
(1) 3kg of spherical nickel hydroxide is added into a 5L beaker, 1.5L of 40% liquid alkali is added, stirring is carried out for 1h, and supernatant is discharged after 30 min;
(2) Adding liquid alkali with the concentration of 40% by weight of 1.5L again, stirring for 1h, clarifying for 30min, and discharging supernatant;
(3) Adding 60 ℃ pure water 30L, stirring for 30min, and washing by using the method until the content of the spherical nickel sulfate radical is lower than 0.25%.
Example 5
A method for reducing sulfate radical in a ball nickel product, which comprises the following specific steps:
(1) At 5m 3 500kg of spherical nickel hydroxide is added into a reaction kettle, 250L of 40% liquid alkali is added, stirring is carried out for 1h, and supernatant is discharged after 30min of clarification;
(2) Adding 150L of 30% liquid alkali again, stirring for 1h, clarifying for 30min, and discharging supernatant;
(3) Adding pure water at 60 ℃ for 4m 3 Stirring for 30min, and washing with the method to obtain ball nickel sulfate less than 0.25%.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (4)
1. A method for reducing sulfate in a nickel ball product comprising the steps of:
(1) Adding liquid alkali into spherical nickel hydroxide, wherein the concentration of the liquid alkali is 20-40%, the adding amount is 0.3-0.5L/kg, stirring for at least 1h, clarifying for 30min, and discharging supernatant;
(2) Adding liquid alkali with concentration of 20-70% and adding amount of 0.3-0.8L/kg for secondary stirring for at least 1 hr, clarifying for 30min, and discharging supernatant;
(3) Adding 60 ℃ pure water with the addition amount of 8-16L/kg, and washing for at least 1h.
2. A method for reducing sulfate in a nickel ball product according to claim 1, wherein in step (1), stirring is performed for 1-2 hours.
3. A method for reducing sulfate in a nickel ball product according to claim 1, wherein in step (2), stirring is performed for 1-2 hours.
4. A method for reducing sulfate in a nickel ball product according to claim 1, wherein in step (3), the ball is washed for 1-2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310230427.XA CN116119743A (en) | 2023-03-11 | 2023-03-11 | Method for reducing sulfate radical in ball nickel product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310230427.XA CN116119743A (en) | 2023-03-11 | 2023-03-11 | Method for reducing sulfate radical in ball nickel product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116119743A true CN116119743A (en) | 2023-05-16 |
Family
ID=86302947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310230427.XA Pending CN116119743A (en) | 2023-03-11 | 2023-03-11 | Method for reducing sulfate radical in ball nickel product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116119743A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1383587A (en) * | 2000-06-16 | 2002-12-04 | 松下电器产业株式会社 | Anode active material for alkali storage battery, anode including samd, and alkali storage battery |
| CN101168453A (en) * | 2006-10-27 | 2008-04-30 | 北京有色金属研究总院 | Method for treating (SO4)2- impurity of spherical nickel hydroxide |
-
2023
- 2023-03-11 CN CN202310230427.XA patent/CN116119743A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1383587A (en) * | 2000-06-16 | 2002-12-04 | 松下电器产业株式会社 | Anode active material for alkali storage battery, anode including samd, and alkali storage battery |
| CN101168453A (en) * | 2006-10-27 | 2008-04-30 | 北京有色金属研究总院 | Method for treating (SO4)2- impurity of spherical nickel hydroxide |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240411 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: 737103 No. 98, Jinchuan Road, Jinchang, Gansu Applicant before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |