Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for producing, collecting and purifying potassium permanganate through liquid-phase electrolytic method

A technology of potassium permanganate and electrolysis, applied in electrolysis process, electrolysis components, etc., can solve the problems of low efficiency and unsatisfactory purity of potassium permanganate, and achieve the effect of convenient precipitation, convenient filtering of impurities, and simple operation

Inactive Publication Date: 2019-01-15
YUNNAN JIANSHUI MANGANESE
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a method for producing, collecting and purifying potassium permanganate by liquid-phase electrolysis, which solves the problems of low efficiency and unsatisfactory purity of potassium permanganate produced by traditional liquid-phase electrolysis

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 producing, collecting and purifying potassium permanganate through liquid-phase electrolytic method
  • Method for producing, collecting and purifying potassium permanganate through liquid-phase electrolytic method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Step S1: Take 340g of potassium manganate crystals by electronic scales, put the 340g of potassium manganate crystals into the electrolytic cell, add water and potassium hydroxide solution to prepare an electrolyte, wherein the potassium manganate is set to 180g / L, and the hydroxide Potassium is set to 60g / L;

[0045] Step S2: Heating the electrolytic cell so that the temperature of the electrolyte is always kept at about 70°C, and then electrifying for ionization, potassium manganate is oxidized to potassium permanganate at the anode, and crystallizes out;

[0046] Step S3: After the electrolyte solution is cooled, the crude product of potassium permanganate is obtained by centrifugal separation in a centrifuge;

[0047] Step S4: using the solubility difference of potassium permanganate at different temperatures, the crude product of potassium permanganate is purified by recrystallization, and the specific purification steps are as follows:

[0048] Step S41: Take out a...

Embodiment 2

[0054] Step S1: Take 440g of potassium manganate crystals by electronic scales, put the 440g of potassium manganate crystals into the electrolytic cell and add water and potassium hydroxide solution to prepare an electrolyte solution, wherein the potassium manganate is set to 220g / L, and the hydroxide Potassium is set to 65g / L;

[0055] Step S2: Heating the electrolytic cell so that the temperature of the electrolyte is always kept at about 70°C, and then electrifying for ionization, potassium manganate is oxidized to potassium permanganate at the anode, and crystallizes out;

[0056] Step S3: After cooling the electrolyte solution, the crude product of potassium permanganate is obtained by centrifugal separation in a centrifuge;

[0057] Step S4: using the solubility difference of potassium permanganate at different temperatures, the crude product of potassium permanganate is purified by recrystallization, and the specific purification steps are as follows:

[0058] Step S41...

Embodiment 3

[0064] Step S1: Take 540g of potassium manganate crystals by electronic scales, put the 540g of potassium manganate crystals into the electrolytic cell, add water and potassium hydroxide solution to prepare an electrolyte, wherein the potassium manganate is set to 260g / L, and the hydroxide Potassium is set to 70g / L;

[0065] Step S2: Heating the electrolytic cell so that the temperature of the electrolyte is always kept at about 70°C, and then electrifying for ionization, potassium manganate is oxidized to potassium permanganate at the anode, and crystallizes out;

[0066] Step S3: After cooling the electrolyte solution, the crude product of potassium permanganate is obtained by centrifugal separation in a centrifuge;

[0067] Step S4: using the solubility difference of potassium permanganate at different temperatures, the crude product of potassium permanganate is purified by recrystallization, and the specific purification steps are as follows:

[0068] Step S41: Take out a...

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 producing, collecting and purifying potassium permanganate through a liquid-phase electrolytic method. The method comprises the following steps: pouring a potassium hydroxide solution with the mass fraction as 80% into a first reaction kettle and heating to 220 to 240 DEG C; manufacturing pyrolusite into pyrolusite powder through a pulverizer, putting the pyrolusite powder into a second reaction kettle and pouring the potassium hydroxide solution under a liquid-phase molten state in the first reaction kettle into the second reaction kettle; heating the second reaction kettle to increase a temperature of the second reaction kettle to about 310 DEG C, spraying air into the second reaction kettle through an air spraying device, simultaneously controlling astirring device to stir and reacting for 5 hours to completely oxidize manganese dioxide in the pyrolusite into potassium manganate; pumping the solution in the second reaction kettle into a third reaction kettle and performing suction filtration, dilution and cooling to crystallize the potassium manganate out. According to the method disclosed by the invention, the first reaction kettle, the second reaction kettle, the third reaction kettle and a stirrer are arranged, so that the problem that a traditional liquid-phase electrolytic method has low potassium permanganate production efficiencyand the purity is not ideal is solved.

Description

technical field [0001] The invention relates to the technical field of potassium permanganate preparation, in particular to a method for producing, collecting and purifying potassium permanganate by a liquid-phase electrolysis method. Background technique [0002] Potassium permanganate is dark purple, slender prismatic crystals or particles, with blue metallic luster, widely used as an oxidizing agent in chemical production, such as saccharin, vitamin C, isoniazid and benzoic acid oxidant; used as preservative, disinfectant, deodorant and antidote in medicine; used as water treatment agent in water purification and wastewater treatment; in gas purification, trace sulfur, arsenic, phosphorus, silane can be removed , borane and sulfide; in mining and metallurgy, it is used to separate molybdenum from copper, remove impurities from zinc and cadmium, and oxidant for compound flotation; it is also used as a bleaching agent for special fabrics, waxes, greases and resins , gas ma...

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): C25B1/14C22B3/12C22B3/02C22B47/00
CPCC22B3/02C22B3/12C22B47/00C25B1/14
Inventor 李宗有王建波许永宏王伟夏宇台明张勇王运正刘大雄吕达海
Owner YUNNAN JIANSHUI MANGANESE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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