CN113830835A - Process and device for removing calcium ions in manganese sulfate solution - Google Patents
Process and device for removing calcium ions in manganese sulfate solution Download PDFInfo
- Publication number
- CN113830835A CN113830835A CN202111184418.9A CN202111184418A CN113830835A CN 113830835 A CN113830835 A CN 113830835A CN 202111184418 A CN202111184418 A CN 202111184418A CN 113830835 A CN113830835 A CN 113830835A
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- China
- Prior art keywords
- manganese sulfate
- sulfate solution
- calcium ions
- standing
- solution
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- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 title claims abstract description 65
- 229940099596 manganese sulfate Drugs 0.000 title claims abstract description 51
- 235000007079 manganese sulphate Nutrition 0.000 title claims abstract description 51
- 239000011702 manganese sulphate Substances 0.000 title claims abstract description 51
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910001424 calcium ion Inorganic materials 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000012905 visible particle Substances 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 49
- 239000013078 crystal Substances 0.000 claims description 17
- 239000012047 saturated solution Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000002425 crystallisation Methods 0.000 claims description 4
- 230000008025 crystallization Effects 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052791 calcium Inorganic materials 0.000 abstract description 3
- 239000011575 calcium Substances 0.000 abstract description 3
- 238000010924 continuous production Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000011555 saturated liquid Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/10—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a process and a device for removing calcium ions in a manganese sulfate solution, wherein the process comprises the following steps: obtaining manganese sulfate saturated liquid; conveying the saturated manganese sulfate solution to a cooling system for cooling; placing the cooled manganese sulfate solution in a standing system for standing, and gradually separating out calcium ions to form visible particles; and filtering calcium ions from the manganese sulfate solution after standing through a filter system. The method removes the calcium ions from the solution by using an adsorption method according to the saturation difference of the calcium ions at different temperatures, and has the advantages of simple process, good economy, no pollution to raw materials, high calcium removal rate, environmental friendliness, continuous production and the like.
Description
Process and device for removing calcium ions in manganese sulfate solution
Technical Field
The invention relates to the technical field of removal and impurity removal of manganese sulfate solution, in particular to a process and a device for removing calcium ions in manganese sulfate solution.
Background
Calcium ions as metal ions exist in various liquids, and when meeting acid, the calcium ions can form micro small particles which are insoluble in water or water and are insoluble in water, so that system blockage is caused, the calcium ions enter products to cause disqualification of the products, and the production and the life are seriously influenced.
With the rapid development of new energy industries, particularly in the battery industry, the usage amount of high-purity manganese sulfate is increased gradually, the requirement on the purity of manganese sulfate is also increased gradually, and calcium ions cause structural collapse of materials in the battery electrode material during lithium separation/lithium intercalation, influence the capacity of the battery, possibly cause increase of self-discharge and the like, so that the service performance of the new energy battery is influenced.
Disclosure of Invention
The invention aims to provide a process and a device for removing calcium ions in a manganese sulfate solution, so as to solve the problems.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a process for removing calcium ions in a manganese sulfate solution comprises the following steps:
s1, obtaining a manganese sulfate saturated solution;
s2, conveying the saturated manganese sulfate solution to a cooling system for cooling;
s3, placing the cooled manganese sulfate solution in a standing system for standing, and gradually separating out calcium ions to form visible particles;
and S4, filtering calcium ions from the well-standing manganese sulfate solution through a filtering system.
Preferably, the method for obtaining the saturated manganese sulfate solution in the step S1 includes:
placing unsaturated manganese sulfate solution in a crystal dissolving system, adding the manganese sulfate slurry obtained after centrifuging by a centrifuge into the crystal dissolving system, and stirring, wherein the supernatant is the saturated solution of manganese sulfate.
Preferably, the manganese sulfate solution is placed in a standing system for 24-48 hours.
Preferably, the manganese sulfate solution, which is filtered of calcium ions by the filtration system, is fed into the crystallization feed system.
An apparatus for removing calcium ions from a manganese sulfate solution, comprising: dissolve brilliant system, cooling system, system and filtration system of stewing, wherein, dissolve brilliant system's discharge gate with cooling system's feed inlet links to each other, cooling system's discharge gate with the feed inlet of the system of stewing links to each other, the system's of stewing discharge gate with filtration system's feed inlet links to each other
Preferably, a stirring device is arranged in the crystal dissolving system.
Preferably, the feed inlet of the crystal dissolving system is respectively communicated with an unsaturated manganese sulfate solution feed pipe and a manganese sulfate slurry feed pipe.
Preferably, a centrifugal machine is arranged on a pipeline of the crystal dissolving system, which is communicated with the unsaturated manganese sulfate solution feeding pipe.
Preferably, the device further comprises a feeding system, and a discharge hole of the filtering system is communicated with a feed hole of the feeding system.
Has the advantages that:
the method removes the calcium ions from the solution by using an adsorption method according to the saturation difference of the calcium ions at different temperatures, and has the advantages of simple process, good economy, no pollution to raw materials, high calcium removal rate, environmental friendliness, continuous production and the like.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a process for removing calcium ions in a manganese sulfate solution, which comprises the following steps:
s1, obtaining a manganese sulfate saturated solution: placing unsaturated manganese sulfate solution in a crystal dissolving system, wherein the calcium ion concentration of the manganese sulfate solution is about 1000 ppm; after centrifuging the centrifuge, adding the manganese sulfate slurry into a crystal dissolving system and stirring, wherein the supernatant is a saturated solution of manganese sulfate;
s2, conveying the manganese sulfate saturated liquid into a cooling system of manganese sulfate through a pump, increasing the chance of meeting calcium ions, and gradually polymerizing free calcium ions under the gradual decrease of the temperature of the manganese sulfate;
s3, placing the cooled manganese sulfate solution in a special standing system, and allowing most calcium ions to gather together and gradually separate out to form visible particles after standing for 24-48 hours;
s4, the manganese sulfate liquid after standing passes through a filtering system, calcium ions in the solution are reduced to be within 400ppm from the original concentration of about 1000ppm, and then the solution can enter a feeding system of crystallization.
Referring to fig. 1, the present invention also provides an apparatus for removing calcium ions from a manganese sulfate solution, including: dissolve brilliant system, cooling system, system and filtration system of stewing, wherein, dissolve brilliant system's discharge gate with cooling system's feed inlet links to each other, cooling system's discharge gate with the feed inlet of the system of stewing links to each other, the system's of stewing discharge gate with filtration system's feed inlet links to each other
In this embodiment, a stirring device is disposed in the crystal dissolving system.
In this embodiment, the feed inlet of the crystal dissolving system is respectively communicated with an unsaturated manganese sulfate solution feed pipe and a manganese sulfate slurry feed pipe.
In this embodiment, a centrifuge is arranged on a pipeline connecting the crystal dissolving system and the unsaturated manganese sulfate solution feeding pipe.
The invention also comprises a feeding system, wherein a discharge hole of the filtering system is communicated with a feed hole of the feeding system.
According to the characteristics of calcium ions, the aim of removing the calcium ions is fulfilled by a physical method, no other substances are added in the whole calcium removing process, and the original pollution-free effect is ensured.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A process for removing calcium ions in a manganese sulfate solution is characterized by comprising the following steps:
s1, obtaining a manganese sulfate saturated solution;
s2, conveying the saturated manganese sulfate solution to a cooling system for cooling;
s3, placing the cooled manganese sulfate solution in a standing system for standing, and gradually separating out calcium ions to form visible particles;
and S4, filtering calcium ions from the well-standing manganese sulfate solution through a filtering system.
2. The process for removing calcium ions from a manganese sulfate solution as claimed in claim 1, wherein the method for obtaining the saturated manganese sulfate solution in step S1 comprises the following steps:
placing unsaturated manganese sulfate solution in a crystal dissolving system, adding the manganese sulfate slurry obtained after centrifuging by a centrifuge into the crystal dissolving system, and stirring, wherein the supernatant is the saturated solution of manganese sulfate.
3. The process for removing calcium ions from the manganese sulfate solution as claimed in claim 1, wherein the manganese sulfate solution is placed in a standing system for 24-48 hours.
4. The process for removing calcium ions from a manganese sulfate solution as claimed in claim 1, wherein the manganese sulfate solution, which is filtered of calcium ions by the filtration system, is fed into the crystallization feeding system.
5. The device for removing calcium ions in manganese sulfate solution is characterized by comprising the following components: the crystal dissolving system comprises a crystal dissolving system, a cooling system, a standing system and a filtering system, wherein a discharge hole of the crystal dissolving system is connected with a feed hole of the cooling system, a discharge hole of the cooling system is connected with a feed hole of the standing system, and a discharge hole of the standing system is connected with a feed hole of the filtering system.
6. The device for removing calcium ions from a manganese sulfate solution as claimed in claim 5, wherein a stirring device is arranged in the crystallization system.
7. The device for removing calcium ions from a manganese sulfate solution as claimed in claim 5, wherein the feed inlet of the crystal dissolving system is respectively communicated with an unsaturated manganese sulfate solution feed pipe and a manganese sulfate slurry feed pipe.
8. The device for removing calcium ions from the manganese sulfate solution as claimed in claim 7, wherein a centrifuge is arranged on a pipeline of the crystal dissolving system, which is communicated with the unsaturated manganese sulfate solution feeding pipe.
9. The device for removing calcium ions in manganese sulfate solution as claimed in claim 5, further comprising a feeding system, wherein the discharge port of the filtering system is communicated with the feed port of the feeding system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184418.9A CN113830835A (en) | 2021-10-11 | 2021-10-11 | Process and device for removing calcium ions in manganese sulfate solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184418.9A CN113830835A (en) | 2021-10-11 | 2021-10-11 | Process and device for removing calcium ions in manganese sulfate solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113830835A true CN113830835A (en) | 2021-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111184418.9A Pending CN113830835A (en) | 2021-10-11 | 2021-10-11 | Process and device for removing calcium ions in manganese sulfate solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113830835A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170084966A1 (en) * | 2015-09-18 | 2017-03-23 | Kangwon National University University-Industry Cooperation Foundation | Manufacturing method of high purity manganese sulphate from the waste liquid of battery recycling process |
| CN107963669A (en) * | 2018-01-08 | 2018-04-27 | 中南大学 | A kind of calcium removal methods of technical grade sulfuric acid manganese |
| CN108585051A (en) * | 2018-05-23 | 2018-09-28 | 中南大学 | A kind of method that copper chloride manganese liquid prepares LITHIUM BATTERY manganese sulfate |
| CN110642297A (en) * | 2019-09-04 | 2020-01-03 | 广西大学 | Method for removing calcium and magnesium ions in manganese sulfate solution through low-temperature crystallization |
-
2021
- 2021-10-11 CN CN202111184418.9A patent/CN113830835A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170084966A1 (en) * | 2015-09-18 | 2017-03-23 | Kangwon National University University-Industry Cooperation Foundation | Manufacturing method of high purity manganese sulphate from the waste liquid of battery recycling process |
| CN107963669A (en) * | 2018-01-08 | 2018-04-27 | 中南大学 | A kind of calcium removal methods of technical grade sulfuric acid manganese |
| CN108585051A (en) * | 2018-05-23 | 2018-09-28 | 中南大学 | A kind of method that copper chloride manganese liquid prepares LITHIUM BATTERY manganese sulfate |
| CN110642297A (en) * | 2019-09-04 | 2020-01-03 | 广西大学 | Method for removing calcium and magnesium ions in manganese sulfate solution through low-temperature crystallization |
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Application publication date: 20211224 |