Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for removing calcium and magnesium ions in manganese sulfate solution by low temperature crystallization

A technology of manganese sulfate solution and calcium and magnesium ions, which is applied in the direction of manganese sulfate, etc., can solve the problems of single production process, high production cost, and low product purity, so as to simplify the process flow, reduce energy and water consumption, and reduce production cost Effect

Active Publication Date: 2021-10-12
GUANGXI UNIV +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional preparation methods of high-purity manganese sulfate are roughly divided into four types, namely recrystallization method, fluoride method, extraction method, and electrolytic metal method. The technical indicators of the traditional method are: Mn≥32%, calcium and magnesium content less than 100ppm or However, because these production processes are too single and have a series of defects such as low product purity, serious environmental pollution, and high production costs, the innovation of high-purity manganese sulfate production process is already imminent

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for removing calcium and magnesium ions in manganese sulfate solution by low temperature crystallization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 100mL of manganese sulfate solution leached from manganese ore into the reaction vessel, then add 1M sulfuric acid to adjust the acidity to pH 2;

[0028] Next, 100 mL of absolute ethanol was added, and the mixed solution was stirred (temperature 25°C, speed 100 rpm, time 2 hours), and after the precipitation of manganese sulfate crystals was completed, stand at room temperature for 1 hour;

[0029] Filter and separate the precipitated manganese sulfate crystals from the solution, use the filtrate for later use, and dry the manganese sulfate crystals in an oven (at a temperature of 40°C for 12 hours) to obtain high-purity manganese sulfate crystals.

[0030] Distill the filtrate of step to separate the organic solvent therefrom for recycling.

[0031] This example manganese sulfate solution is obtained from Chongzuo Branch of CITIC Dameng Mining Co., Ltd. by sulfuric acid leaching manganese ore, wherein the content of manganese is 130g / L, and other ion concentra...

Embodiment 2

[0035] Add 100mL of manganese sulfate solution leached from manganese ore into the reaction vessel, then add 1M hydrochloric acid to adjust the acidity to pH 1;

[0036] Then add 300 mL of propanol, stir the mixed solution (temperature 30°C, speed 150 rpm, time 0.1 hour), after the precipitation of manganese sulfate crystals is complete, let stand at room temperature for 2 hours;

[0037] Filter and separate the precipitated manganese sulfate crystals from the solution, use the filtrate for later use, and dry the manganese sulfate crystals in an oven (at a temperature of 80°C for 2 hours) to obtain high-purity manganese sulfate crystals.

[0038] Distill the filtrate of step to separate the organic solvent therefrom for recycling.

Embodiment 3

[0040] Add 200mL of manganese sulfate solution leached from manganese ore into the reaction vessel, then add 1M nitric acid to adjust the acidity to pH 3;

[0041] Then add 300mL of methanol, stir the mixed solution (temperature 40°C, speed 200 rpm, time 0.5 hours), after the precipitation of manganese sulfate crystals is complete, let stand at room temperature for 3 hours;

[0042] Filter and separate the precipitated manganese sulfate crystals from the solution, and use the filtrate for later use. Dry the manganese sulfate crystals in an oven (at a temperature of 60° C. for 8 hours) to obtain high-purity manganese sulfate crystals.

[0043] Distill the filtrate of step to separate the organic solvent therefrom for recycling.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for removing calcium and magnesium ions in a manganese sulfate solution by low-temperature crystallization. The acidity of the manganese sulfate solution leached from manganese ore is adjusted to a pH value of 0-10, and then directly mixed with an organic solvent. Continuous mechanical stirring or shaking makes manganese sulfate crystals precipitate rapidly, and then stands still, filters and dries to obtain high-purity manganese sulfate crystals. This method is an improved extraction method, which uses an organic solvent as the extraction agent and uses low-temperature crystallization technology to remove calcium and magnesium ions in manganese sulfate solution. In fact, it uses the solubility of calcium and magnesium ions and manganese ions in organic solutions under low temperature It is different to achieve its separation, so as to prepare high-purity manganese sulfate crystals. The application of the present invention to prepare high-purity manganese sulfate crystals simplifies the operation steps, improves the production efficiency, has high product quality and purity, and greatly reduces energy consumption, water consumption, and production costs. The production process is green and pollution-free, which is conducive to environmental protection and can meet industrialization Production demand, has a huge application prospect.

Description

technical field [0001] The invention belongs to the technical field of manganese sulfate preparation, and in particular relates to a method for removing calcium and magnesium ions in a manganese sulfate solution by low-temperature crystallization. Background technique [0002] At present, electric vehicles and electric motorcycles are highly praised by people, because electric vehicles have the characteristics of energy saving, emission reduction, low-carbon environmental protection, and convenience. The key point of new energy electric vehicles is the power battery, and the positive electrode material of the power battery is mainly a ternary electrode material. Ternary materials have excellent electrical properties and safety, making them account for 50% of the positive electrode materials of power batteries. The indispensable main material for making the positive electrode material of nickel-manganese-cobalt ternary battery is high-purity manganese sulfate, so high-purity...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G45/10
CPCC01G45/10C01P2006/80
Inventor 王开拓韦悦周詹锋明宪权
Owner GUANGXI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com