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

Method for purifying and removing chlorine by manganese sulfate electrolyte

A technology of electrolyte and manganese sulfate, which is applied in the field of purification and removal of chlorine in manganese sulfate solution, and in the field of hydrometallurgy. It can solve the problems of inability to be directly used as dechlorination agent, increase in treatment costs, sewage, etc., and achieve low production costs and high product quality. The effect of good quality and short process

Active Publication Date: 2018-06-29
CENT SOUTH UNIV
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are various problems in the traditional recycling method of dechlorination agent, such as new pollutants—chlorine ion-containing sewage after recycling, or the inability to be directly used as dechlorination agent after recycling, which leads to treatment costs increase

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 purifying and removing chlorine by manganese sulfate electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Bi in bismuth trioxide described in the present invention 2 o 3 The mass percentage is not less than 99.90%, industrial grade concentrated sulfuric acid (H 2 SO 4 ≥98.0%), industrial grade manganese powder (Mn≥99.0%) and manganese carbonate (MnCO 3 ≥98.0%). Stir and mix bismuth trioxide and concentrated sulfuric acid according to the mass ratio of 1 / 4, then heat up to 210°C and react for 10 minutes, stop heating after the yellow bismuth trioxide turns into white precipitate, and add the activated slag to the manganese sulfate electrolysis In the liquid, control the ratio of the activated slag mass kg to the liquid volume L to be 1 / 120, keep stirring and keep the temperature at 70°C, add manganese carbonate at the same time to maintain the pH value of the solution at the initial value of 2.30, continue to stir and react for 1.0h, and use vacuum pumping Liquid-solid separation by filtration, the chlorine ion in the purified liquid is reduced to 22mg / L, and the chlorin...

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 purifying and removing chlorine by manganese sulfate electrolyte. The method comprises the steps that firstly, bismuth trioxide is activated in concentrated sulfuric acid to enable the bismuth trioxide to be converted into bismuth sulfate; secondly, the activating slag is added into a manganese sulfate solution, and the pH value of the solution is adjusted to an initial value by using a manganese salt, so that chloride ions in the solution are precipitated in the form of bismuth oxychloride; the residue is re-purified by using concentrated sulfuric acid toremove chlorine and realizing the regeneration of the precipitant, and finally the manganese powder is added to replace the residual bismuth ions in the purified liquid. The method comprises the following steps that firstly, bismuth oxide is converted into bismuth sulfate with relatively good activity; secondly, the characteristic that the dissolution rate of the bismuth oxychloride is small is further utilized, the chlorine in the manganese sulfate electrolyte is removed by using bismuth sulfate, and the property that hydrogen chloride is easy to volatilize is utilized again, so that the bismuth oxychloride is regenerated into bismuth sulfate; and finally, the property of the electrode potential of manganese is lower than the electrode potential of bismuth is utilized, so that residual bismuth in the purified liquid can be replaced and recycled. The method has the advantages of being short in process, good in product quality and low in cost.

Description

technical field [0001] The invention relates to a method for purifying manganese sulfate electrolyte, in particular to a hydrometallurgical method for purifying and removing chlorine in manganese sulfate solution. Background technique [0002] Manganese metal is a bright silver-white transition metal, hard and brittle, chemically active, and exists in the form of compounds. In the iron and steel industry, manganese is mainly used for desulfurization and deoxidation of steel, and is also used as an alloy additive to improve the strength, hardness, elastic limit, wear resistance and corrosion resistance of steel; in high alloy steel, it is also used as austenite It is a compound element for refining stainless steel, special alloy steel, stainless steel welding rod, etc. In addition, it is also used in non-ferrous metals, chemicals, medicine, electronics and agriculture. [0003] The main products of manganese are manganese metal and manganese dioxide. Their production proces...

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
IPC IPC(8): C25C1/10C22B3/44C22B3/46
CPCC22B3/44C22B3/46C25C1/10
Inventor 刘伟锋杨天足张杜超陈霖唐攒浪孙百奇
Owner CENT SOUTH 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