CN113072081A - Impurity removal process for lithium sulfate purification completion liquid - Google Patents
Impurity removal process for lithium sulfate purification completion liquid Download PDFInfo
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- CN113072081A CN113072081A CN202110318638.XA CN202110318638A CN113072081A CN 113072081 A CN113072081 A CN 113072081A CN 202110318638 A CN202110318638 A CN 202110318638A CN 113072081 A CN113072081 A CN 113072081A
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- lithium sulfate
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/06—Sulfates; Sulfites
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/08—Carbonates; Bicarbonates
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Abstract
The invention discloses an impurity removal process for a lithium sulfate purification completion liquid, belongs to the technical field of lithium sulfate preparation, and aims to provide an impurity removal process for a lithium sulfate purification completion liquid, which solves the problems of small particle impurities of calcium carbonate and magnesium carbonate indissolvable substances and calcium sulfate slightly solvable substances, Ca and the like in the conventional lithium sulfate purification completion liquid2+Impurities, which causes the problem of poor quality of the subsequent lithium carbonate product. Which comprises the following steps: (1) filtering by using a precision filter to filter and intercept insoluble substances such as calcium carbonate and magnesium carbonate and slightly soluble substances such as calcium sulfate in the lithium sulfate purification finished solution; (2) selectively adsorbing soluble Ca in lithium sulfate solution by ion exchange resin column2+Impurities, and finishing the deep purification of the lithium sulfate purifying solution. The method is suitable for removing impurities from the lithium sulfate purification finished solution.
Description
Technical Field
The invention belongs to the technical field of lithium sulfate preparation, and particularly relates to a lithium sulfate purification completion liquid impurity removal process.
Background
The purification process of the lithium sulfate solution is not thorough due to the process defects in the existing lithium sulfate preparation process, and the obtained purification completion liquid contains CaCO3、MgCO3、Mg(OH)2、Fe(OH)3Insoluble substance, CaSO4And the like. The generation reason is mainly formed by small particles filtered by the purifying liquid gradually rising in the evaporation process or formed by precipitation after the concentration of the small particles gradually increasing after evaporation, and simultaneously, soluble Ca is generated in the purifying process2+The calcium content in the finally prepared lithium sulfate exceeds the standard, and the problem of poor product quality exists. Therefore, it is how to control the insoluble matters such as calcium carbonate and magnesium carbonate, the slightly soluble matters such as calcium sulfate, and the soluble Ca in the purified solution of lithium sulfate2+And the impurities are effectively filtered and intercepted, which is the important factor for improving the quality of the lithium sulfate product.
Disclosure of Invention
The invention aims to: provides a process for removing impurities from a lithium sulfate purification finished solution, which solves the problems of small particle impurities and Ca of calcium carbonate and magnesium carbonate indissolvable substances and calcium sulfate slightly-soluble substances in the existing lithium sulfate purification finished solution2+Impurities, which causes the problem of poor quality of the subsequent lithium carbonate product.
The technical scheme adopted by the invention is as follows:
a lithium sulfate purification completion liquid impurity removal process comprises the following steps:
(1) introducing the lithium sulfate purification finished solution into a precision filter for filtering, and removing small particle impurities of calcium carbonate, magnesium carbonate insoluble matters and calcium sulfate slightly soluble matters in the lithium sulfate purification finished solution;
(2) the lithium sulfate purification completion liquid filtered by the precision filter passes through an ion exchange resin column from top to bottom, and Ca in the lithium sulfate purification completion liquid2+The impurities are removed by adsorption and replacement to obtain a lithium sulfate purification completion liquid with thorough impurity removal, when the impurities adsorbed by the ion exchange resin column are close to a saturated state, regeneration treatment is needed, and 5% sulfuric acid solution is used for being communicated from bottom to top in a countercurrent mode during regenerationPassing through ion exchange resin column, removing the ions and other impurities adsorbed by the resin by displacement and elution, and backwashing with pure water or desalted water to restore the original state and performance.
Further, the filtering of the lithium sulfate purification completion liquid by the precision filter in the step 1 comprises the following steps:
(1) driving: exhausting the precision filter system in the driving process;
(2) and (4) normal operation: when the filtering system normally operates, the temperature, the pressure and the flow of the inlet liquid are in the range of process conditions, and the filtering system stably operates according to a set operation program;
(3) back flushing: the back flushing of the precision filter is controlled according to time and pressure difference, the back flushing is carried out on line unit by unit, a back flushing medium is filtered liquid, and the back flushing pressure is 0.2-0.4 MPa;
(4) deslagging: the precise filter adopts intermittent concentrated slag discharging liquid;
(5) parking: when the system is stopped, liquid in the precision filter system is discharged, the system is cleaned by clean water until the clean water does not contain obvious impurities any more, and the system is filled with the clean water after the cleaning system is finished.
Furthermore, the ion exchange resin column in the step 2 adopts a three-column series connection process, and two columns normally run one column for regeneration or standby.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, the fine filter is used for removing small particle impurities of calcium carbonate, magnesium carbonate indissolvable matter and calcium sulfate slightly solvable matter in the lithium sulfate purification finished solution, and the ion exchange resin column is used for removing Ca in the lithium sulfate purification finished solution2+Impurity and ion exchange resin columns adopt a three-column series process, and two columns normally run and one column is regenerated or standby, so that the system is ensured to be a continuous operation process, and the equipment utilization rate and the production efficiency are improved. The back washing mode is adopted to ensure that the precision filter realizes long-term, stable and continuous high-precision filtration of the lithium sulfate purifying liquid. The micro cross flow filtration mode is adopted, so that the surface of the filter element is at a right angle with the flow direction of the solution, and the concentration during the filtration is preventedThe phenomenon of poor polarization occurs. The method effectively removes residual impurities in the lithium sulfate purification completion liquid, ensures the quality of subsequent lithium carbonate products, and solves the problems of small particle impurities and Ca of calcium carbonate, magnesium carbonate indissolvable substances and calcium sulfate slightly solvable substances in the existing lithium sulfate purification completion liquid2+Impurities, which causes the problem of poor quality of the subsequent lithium carbonate product.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a simplified process flow diagram of the present invention;
FIG. 2 is a process flow diagram of a precision filter according to the present invention;
FIG. 3 is a process flow diagram of an ion exchange resin column 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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.
It should be noted that: reference numerals and letters designate similar items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention usually place when in use, and are simply used for simplifying the description of the present invention, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; mechanical connection or electrical connection can be realized; the two original pieces can be directly connected or indirectly connected through an intermediate medium, or the two original pieces can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A lithium sulfate purification completion liquid impurity removal process comprises the following steps:
(1) introducing the lithium sulfate purification finished solution into a precision filter for filtering, and removing small particle impurities of calcium carbonate, magnesium carbonate insoluble matters and calcium sulfate slightly soluble matters in the lithium sulfate purification finished solution;
(2) through precision processingThe lithium sulfate purification completion liquid filtered by the filter passes through an ion exchange resin column from top to bottom, and Ca in the lithium sulfate purification completion liquid2+Impurities are absorbed, replaced and removed to obtain a lithium sulfate purification completion liquid with thorough impurities removal, when the impurities absorbed by an ion exchange resin column are close to a saturated state, regeneration treatment is needed, 5% sulfuric acid solution passes through the ion exchange resin column from bottom to top in a countercurrent mode during regeneration, ions and other impurities absorbed by the resin are replaced, eluted and removed, and then pure water or desalted water is used for backwashing, so that the original state and performance are recovered.
Further, the filtering of the lithium sulfate purification completion liquid by the precision filter in the step 1 comprises the following steps:
(1) driving: exhausting the precision filter system in the driving process;
(2) and (4) normal operation: when the filtering system normally operates, the temperature, the pressure and the flow of the inlet liquid are in the range of process conditions, and the filtering system stably operates according to a set operation program;
(3) back flushing: the back flushing of the precision filter is controlled according to time and pressure difference, the back flushing is carried out on line unit by unit, a back flushing medium is filtered liquid, and the back flushing pressure is 0.2-0.4 MPa;
(4) deslagging: the precise filter adopts intermittent concentrated slag discharging liquid;
(5) parking: when the system is stopped, liquid in the precision filter system is discharged, the system is cleaned by clean water until the clean water does not contain obvious impurities any more, and the system is filled with the clean water after the cleaning system is finished.
Furthermore, the ion exchange resin column in the step 2 adopts a three-column series connection process, and two columns normally run one column for regeneration or standby.
In the implementation process of the invention, the fine filter is used for removing small particle impurities of calcium carbonate, magnesium carbonate indissolvable matter and calcium sulfate slightly solvable matter in the lithium sulfate purification completion liquid, and the ion exchange resin column is used for removing Ca in the lithium sulfate purification completion liquid2+Impurity and ion exchange resin columns adopt a three-column series process, two columns normally run and one column is regenerated or standby, the system is ensured to be a continuous operation process, and extraction is carried outThe equipment utilization rate and the production efficiency are improved. The back washing mode is adopted to ensure that the precision filter realizes long-term, stable and continuous high-precision filtration of the lithium sulfate purifying liquid. The micro cross flow filtration mode is adopted, so that the surface of the filter element and the flow direction of the solution are in a right angle, and the phenomenon of concentration polarization during filtration is prevented. The method effectively removes residual impurities in the lithium sulfate purification completion liquid, ensures the quality of subsequent lithium carbonate products, and solves the problems of small particle impurities and Ca of calcium carbonate, magnesium carbonate indissolvable substances and calcium sulfate slightly solvable substances in the existing lithium sulfate purification completion liquid2+Impurities, which causes the problem of poor quality of the subsequent lithium carbonate product.
The above description is an embodiment of the present invention. The foregoing is a preferred embodiment of the present invention, and the preferred embodiments in the preferred embodiments can be combined and used in any combination if not obviously contradictory or prerequisite to a certain preferred embodiment, and the specific parameters in the embodiments and examples are only for the purpose of clearly illustrating the verification process of the invention and are not intended to limit the patent protection scope of the present invention, which is subject to the claims and all the equivalent structural changes made by the content of the description and the drawings of the present invention are also included in the protection scope of the present invention.
Claims (3)
1. The impurity removal process for the lithium sulfate purification completion liquid is characterized by comprising the following steps of:
(1) introducing the lithium sulfate purification completion solution into a precision filter and filtering by adopting a micro cross flow operation mode to remove small particle impurities of calcium carbonate, magnesium carbonate insoluble matters and calcium sulfate slightly soluble matters in the lithium sulfate purification completion solution;
(2) the lithium sulfate purification completion liquid filtered by the precision filter passes through an ion exchange resin column from top to bottom, and Ca in the lithium sulfate purification completion liquid2+Adsorbing, replacing and removing impurities to obtain lithium sulfate purification solution with thorough impurity removal, performing regeneration treatment when impurities adsorbed by the ion exchange resin column are close to saturation, and performing countercurrent with 5% sulfuric acid solution during regenerationThe ion exchange resin column is passed through the ion exchange resin column from bottom to top, the ions and other impurities adsorbed by the resin are displaced, eluted and removed, and then the resin is backwashed with pure water or desalted water to recover the original state and performance.
2. The impurity removing process for the lithium sulfate purification completion liquid according to the claim, wherein the filtering of the lithium sulfate purification completion liquid by the precision filter in the step 1 comprises the following steps:
(1) driving: exhausting the precision filter system in the driving process;
(2) and (4) normal operation: when the filtering system normally operates, the temperature, the pressure and the flow of the inlet liquid are in the range of process conditions, and the filtering system stably operates according to a set operation program;
(3) back flushing: the back flushing of the precision filter is controlled according to time and pressure difference, the back flushing is carried out on line unit by unit, a back flushing medium is filtered liquid, and the back flushing pressure is 0.2-0.4 MPa;
(4) deslagging: the precise filter adopts intermittent concentrated slag discharging liquid;
(5) parking: when the system is stopped, liquid in the precision filter system is discharged, the system is cleaned by clean water until the clean water does not contain obvious impurities any more, and the system is filled with the clean water after the cleaning system is finished.
3. The process for removing impurities from a lithium sulfate purification completion solution according to claim, wherein the ion exchange resin column in the step 2 adopts a three-column series process, and two columns normally operate and one column is regenerated or used for later use.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069445A (en) * | 2018-01-24 | 2018-05-25 | 四川思达能环保科技有限公司 | A kind of sodium carbonate purification and impurity removal system and its method therefor |
| CN116177572A (en) * | 2022-12-05 | 2023-05-30 | 四川国理锂材料有限公司 | Calcium removal production process of lithium sulfate solution |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004196606A (en) * | 2002-12-19 | 2004-07-15 | Nippon Chem Ind Co Ltd | Method for manufacturing high purity lithium carbonate |
| CN102031368A (en) * | 2010-10-29 | 2011-04-27 | 西安蓝晓科技有限公司 | Continuous ion exchange device and method for extracting lithium from salt lake brine |
| WO2011136036A1 (en) * | 2010-04-27 | 2011-11-03 | 住友化学株式会社 | Method for producing transition metal hydroxide |
| CN102417194A (en) * | 2011-08-18 | 2012-04-18 | 西安蓝晓科技新材料股份有限公司 | Deep magnesium removal method of chelating resin for extracting lithium from salt lake brine |
| CN103318925A (en) * | 2013-06-19 | 2013-09-25 | 海门容汇通用锂业有限公司 | Method for producing high-purity lithium carbonate by using lithium concentrate |
| CN103508470A (en) * | 2013-07-24 | 2014-01-15 | 青海锂业有限公司 | Purification and magnesium removal method for lithium chloride solution |
| CN104147803A (en) * | 2014-08-07 | 2014-11-19 | 四川兴晟锂业有限责任公司 | Tri-effect concentration and crystallization equipment and method of lithium hydroxide |
| CN104313348A (en) * | 2014-07-23 | 2015-01-28 | 江苏久吾高科技股份有限公司 | Method for extracting lithium from salt lake brine by using adsorption method |
| CN105797428A (en) * | 2016-03-18 | 2016-07-27 | 中国科学院青海盐湖研究所 | Device and method for removing impurities in high-lithium solution |
| CN105925800A (en) * | 2016-06-17 | 2016-09-07 | 四川思达能环保科技有限公司 | Method and equipment for concentrating lithium leaching solution |
| CN205850402U (en) * | 2016-07-12 | 2017-01-04 | 四川思达能环保科技有限公司 | A kind of process units of lithium sulfate concentrated solution |
| CN107540003A (en) * | 2017-10-13 | 2018-01-05 | 山东鲁北企业集团总公司 | Lithium sulfate thickening-purification technology liquid and preparation method thereof in one kind production battery-level lithium carbonate technique |
| CN107986301A (en) * | 2017-12-27 | 2018-05-04 | 江西赣锋锂业股份有限公司 | A kind of method using battery-level lithium carbonate sinker mother liquor production LITHIUM BATTERY lithium hydroxide |
| CN108640131A (en) * | 2018-04-28 | 2018-10-12 | 四川思达能环保科技有限公司 | Lithium ore prepares the method and system of lithium carbonate |
| CN108840354A (en) * | 2018-08-16 | 2018-11-20 | 湖北上和化学有限公司 | LITHIUM BATTERY lithium chloride deep impurity-removing method |
| CN108996528A (en) * | 2018-09-27 | 2018-12-14 | 中蓝长化工程科技有限公司 | A kind of old halogen in salt pan proposes lithium method |
| CN109824066A (en) * | 2019-04-18 | 2019-05-31 | 王东升 | A method of LITHIUM BATTERY lithium hydroxide is prepared by industrial level lithium carbonate |
| CN112340717A (en) * | 2020-10-26 | 2021-02-09 | 荆门市格林美新材料有限公司 | Comprehensive recovery method of lithium iron phosphate |
| CN215026332U (en) * | 2021-03-25 | 2021-12-07 | 四川恩特普环保科技有限公司 | Lithium sulfate solution precision filter |
-
2021
- 2021-03-25 CN CN202110318638.XA patent/CN113072081A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004196606A (en) * | 2002-12-19 | 2004-07-15 | Nippon Chem Ind Co Ltd | Method for manufacturing high purity lithium carbonate |
| WO2011136036A1 (en) * | 2010-04-27 | 2011-11-03 | 住友化学株式会社 | Method for producing transition metal hydroxide |
| CN102031368A (en) * | 2010-10-29 | 2011-04-27 | 西安蓝晓科技有限公司 | Continuous ion exchange device and method for extracting lithium from salt lake brine |
| CN102417194A (en) * | 2011-08-18 | 2012-04-18 | 西安蓝晓科技新材料股份有限公司 | Deep magnesium removal method of chelating resin for extracting lithium from salt lake brine |
| CN103318925A (en) * | 2013-06-19 | 2013-09-25 | 海门容汇通用锂业有限公司 | Method for producing high-purity lithium carbonate by using lithium concentrate |
| CN103508470A (en) * | 2013-07-24 | 2014-01-15 | 青海锂业有限公司 | Purification and magnesium removal method for lithium chloride solution |
| CN104313348A (en) * | 2014-07-23 | 2015-01-28 | 江苏久吾高科技股份有限公司 | Method for extracting lithium from salt lake brine by using adsorption method |
| CN104147803A (en) * | 2014-08-07 | 2014-11-19 | 四川兴晟锂业有限责任公司 | Tri-effect concentration and crystallization equipment and method of lithium hydroxide |
| CN105797428A (en) * | 2016-03-18 | 2016-07-27 | 中国科学院青海盐湖研究所 | Device and method for removing impurities in high-lithium solution |
| CN105925800A (en) * | 2016-06-17 | 2016-09-07 | 四川思达能环保科技有限公司 | Method and equipment for concentrating lithium leaching solution |
| CN205850402U (en) * | 2016-07-12 | 2017-01-04 | 四川思达能环保科技有限公司 | A kind of process units of lithium sulfate concentrated solution |
| CN107540003A (en) * | 2017-10-13 | 2018-01-05 | 山东鲁北企业集团总公司 | Lithium sulfate thickening-purification technology liquid and preparation method thereof in one kind production battery-level lithium carbonate technique |
| CN107986301A (en) * | 2017-12-27 | 2018-05-04 | 江西赣锋锂业股份有限公司 | A kind of method using battery-level lithium carbonate sinker mother liquor production LITHIUM BATTERY lithium hydroxide |
| CN108640131A (en) * | 2018-04-28 | 2018-10-12 | 四川思达能环保科技有限公司 | Lithium ore prepares the method and system of lithium carbonate |
| CN108840354A (en) * | 2018-08-16 | 2018-11-20 | 湖北上和化学有限公司 | LITHIUM BATTERY lithium chloride deep impurity-removing method |
| CN108996528A (en) * | 2018-09-27 | 2018-12-14 | 中蓝长化工程科技有限公司 | A kind of old halogen in salt pan proposes lithium method |
| CN109824066A (en) * | 2019-04-18 | 2019-05-31 | 王东升 | A method of LITHIUM BATTERY lithium hydroxide is prepared by industrial level lithium carbonate |
| CN112340717A (en) * | 2020-10-26 | 2021-02-09 | 荆门市格林美新材料有限公司 | Comprehensive recovery method of lithium iron phosphate |
| CN215026332U (en) * | 2021-03-25 | 2021-12-07 | 四川恩特普环保科技有限公司 | Lithium sulfate solution precision filter |
Non-Patent Citations (4)
| Title |
|---|
| 朱月海等: "《工业给水处理》", 30 September 2016, 上海：同济大学出版社 * |
| 朱灵峰: "《水与废水处理新技术》", 31 August 2007, 西安地图出版社 * |
| 陈红等: "《生物制药工艺学》", 31 March 2018, 成都：电子科技大学出版社 * |
| 靳彩颖等: "高锂溶液中钙镁离子脱除研究", 《山东化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069445A (en) * | 2018-01-24 | 2018-05-25 | 四川思达能环保科技有限公司 | A kind of sodium carbonate purification and impurity removal system and its method therefor |
| CN116177572A (en) * | 2022-12-05 | 2023-05-30 | 四川国理锂材料有限公司 | Calcium removal production process of lithium sulfate solution |
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