CN109208022A - A kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method - Google Patents

A kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method Download PDF

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Publication number
CN109208022A
CN109208022A CN201811296258.5A CN201811296258A CN109208022A CN 109208022 A CN109208022 A CN 109208022A CN 201811296258 A CN201811296258 A CN 201811296258A CN 109208022 A CN109208022 A CN 109208022A
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reaction kettle
potassium permanganate
potassium
purification
liquid phase
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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
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Yunnan Jianshui Manganese Co Ltd
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Yunnan Jianshui Manganese Co Ltd
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Priority to CN201811296258.5A priority Critical patent/CN109208022A/en
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/14Alkali metal compounds
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/02Apparatus therefor
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/12Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B47/00Obtaining manganese

Abstract

The invention discloses a kind of liquid phase electrolysis method to produce the method for collecting purification potassium permanganate, the described method comprises the following steps: the potassium hydroxide solution that mass fraction is 80% being poured into the first reaction kettle and is heated to 220-240 DEG C;Pyrolusite powder is made by pulverizer in pyrolusite, is launched into the second reaction kettle, then the potassium hydroxide solution under liquid phase molten condition in the first reaction kettle is poured into the second reaction kettle;Heating the second reaction kettle makes its temperature rise to 310 DEG C or so, and sprays into air by air-jet device, while controlling agitating device and being stirred, and after reaction 5 hours, the manganese dioxide in pyrolusite made is completely oxidized to potassium manganate;Solution in second reaction kettle is pumped into third reaction kettle, by suction filtration, dilution, cooling, so that potassium manganate crystallizes out.The present invention solves traditional liquid phase electrolysis method production potassium permanganate low efficiency, the undesirable problem of purity by the first reaction kettle of setting, the second reaction kettle, third reaction kettle and blender.

Description

A kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method
Technical field
The present invention relates to potassium permanganate preparation technical field, purification permanganic acid is collected in specially a kind of liquid phase electrolysis method production The method of potassium.
Background technique
Potassium permanganate is black purple, elongated prismatic crystallization or particle, bluish metallic luster, in chemicals production In, it is widely used as being used for example as sugaring essence, the oxidant of vitamin C, isoniazid and benzoic acid for oxidant;In medicine As preservative, disinfectant, deodorant and antidote;In purification of water quality and wastewater treatment, make water treatment agent;In gas purification In, Trace Sulfur, arsenic, phosphorus, silane, borine and sulfide can be removed;In terms of metallurgy of digging up mine, for the Separation of Molybdenum from copper, from zinc With clean in cadmium and the oxidant of compound flotation;It is also used to make the bleaching agent of particular fabric, wax, grease and resin, gas defence The colorant etc. of the adsorbent of mask, timber and copper, the potassium permanganate low efficiency of traditional liquid phase electrolysis method production, and high violent acid The purity of potassium is relatively low, therefore a kind of method that the present invention designs liquid phase electrolysis method production collection purification potassium permanganate is above-mentioned to solve Problem.
Summary of the invention
In view of the deficiencies of the prior art, the side for collecting purification potassium permanganate is produced the present invention provides a kind of liquid phase electrolysis method Method solves traditional liquid phase electrolysis method production potassium permanganate low efficiency, the undesirable problem of purity.
To achieve the above object, the invention provides the following technical scheme: purification Gao Meng is collected in a kind of production of liquid phase electrolysis method The method of sour potassium, including the first reaction kettle, the second reaction kettle and third reaction kettle, the described method comprises the following steps:
Step S1: the potassium hydroxide solution that mass fraction is 80% is poured into the first reaction kettle and is heated to 220-240 DEG C;
Step S2: being made pyrolusite powder by pulverizer for pyrolusite, launch into the second reaction kettle, then will be in the first reaction kettle Potassium hydroxide solution under liquid phase molten condition is poured into the second reaction kettle;
Step S3: the second reaction kettle of heating makes its temperature rise to 310 DEG C or so, and sprays into air, same time control by air-jet device Agitating device processed is stirred, and after reaction 5 hours, the manganese dioxide in pyrolusite made is completely oxidized to potassium manganate;
Step S4: the solution in the second reaction kettle is pumped into third reaction kettle, by the Buchner funnel inside third reaction kettle After suction filtration, unreacted manganese dioxide is removed, then water is added to third reaction kettle lower end and is diluted, the filtrate after dilution stands It is cooling, so that potassium manganate crystallizes out;
Step S5: the taking-up of potassium manganate crystal is put into addition water, potassium hydroxide solution in electrolytic cell and is configured to electrolyte, wherein manganese Sour potassium is set as 220g/L, and potassium hydroxide is set as 65g/L;
Step S6: heating electrolytic cell, so that electrolyte temperature remains at 70 DEG C or so, then is powered and is ionized, Potassium manganate is oxidized to potassium permanganate in anode, and crystallization is precipitated;
Step S7: it is centrifugated after electrolyte is cooling through centrifuge and potassium permanganate crude product is made;
Step S8: using the dissolubility difference of potassium permanganate at different temperatures, potassium permanganate crude product is carried out by recrystallization Purification, steps are as follows for specific purification operations:
Step S81: it takes out a certain amount of potassium permanganate crude product and is put into purification container, be added one according to the solubility of potassium permanganate Quantitative aqueous solution;
Step S82: 40-60 DEG C is heated to purification container, potassium permanganate starts to dissolve at this time;
After step S83:40-60 minutes, solution is filtered by pan, impurity is filtered out;
Step S84: carrying out cooling down for filtered aqueous solution again, and potassium permanganate is crystallized out from aqueous solution, and filtering is received Collection;
Step S85: it if the purity of potassium permanganate does not reach requirement once, repeats above operation and is repeatedly purified.
Preferably, bottom end and the third of the bottom end of first reaction kettle and the top of the second reaction kettle and the second reaction kettle The top of reaction kettle is connected by conveying pipeline, is provided with delivery pump on the conveying pipeline.
Preferably, the agitating device includes blender and stirring motor, and the second reaction kettle is arranged in the blender Inside, the top of the second reaction kettle is arranged in the stirring motor, and the blade on the blender is set as helical form.
Preferably, the air-jet device includes tracheae, gas nozzle, blower, purifying box and air inlet bucket, the tracheae fixed setting On the upper end inner wall of the second reaction kettle, gas nozzle is provided on the tracheae, the end of the tracheae passes through the second reaction kettle The outlet of side and blower connects, and the import of the blower and the outlet of purifying box connect, and the entrance of the purifying box is fixed It is provided with air inlet bucket.
Preferably, the gas nozzle is provided with several, several described gas nozzles are uniformly arranged along the circumference in the second reaction kettle Inner wall on.
Preferably, the whiff pressure of the air-jet device is arranged in 0.8MPa or so.
Preferably, cooling water pipe is provided on the outer wall of the third reaction kettle, disk is set the cooling water pipe in the shape of a spiral On the outer wall of third reaction kettle.
Preferably, the anode in the electrolytic cell is set as nickel plate, and the cathode in the electrolytic cell is set as iron bar, described The area ratio of anode and cathode is set as 1:6, and the current capacity of the electrolytic cell is set as 1000A/m3, the slot of the electrolytic cell Voltage is set as 2.5V.
Preferably, the inner upper end of the third reaction kettle is fixedly installed Buchner funnel, under the third reaction kettle End side surface offers filler.
The present invention provides a kind of liquid phase electrolysis method to produce the method for collecting purification potassium permanganate, has following beneficial to effect Fruit.
(1) present invention passes through the first reaction kettle of setting, the second reaction kettle, third reaction kettle, agitating device and air-jet device, Air is sprayed by air-jet device, while controlling agitating device and being stirred, so that two in the pyrolusite in the second reaction kettle Manganese oxide can more be completely oxidized to potassium manganate, and the setting of the first reaction kettle, the second reaction kettle and third reaction kettle then makes this Method is high-efficient, and output is big, meets industrialized large-scale production requirement.
(2) present invention is by setting Buchner funnel and filler, so that the precipitation of potassium manganate is more convenient, and can be convenient Impurity is filtered out, easy to operate, product purity is high.
(3) present invention is in electrolytic cell by being added suitable alkaline solution, suitable temperature and by repeatedly purification behaviour Make, to obtain the higher potassium permanganate of purity.
Detailed description of the invention
Fig. 1 is flowage structure schematic diagram of the present invention.
Fig. 2 is air-jet device gas nozzle distribution map of the present invention.
In figure: 1, the first reaction kettle;2, the second reaction kettle;3, third reaction kettle;4, conveying pipeline;5, delivery pump;6, it stirs Device;7, stirring motor;8, tracheae;9, cooling water pipe;10, gas nozzle;11, blower;12, purifying box;13, air inlet bucket;14, Bu Shi leaks Bucket;15, filler.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, the present invention provides a kind of technical solution: a kind of liquid phase electrolysis method production collection purification potassium permanganate Method, including the first reaction kettle 1, the second reaction kettle 2 and third reaction kettle 3, the bottom end of the first reaction kettle 1 and the second reaction kettle 2 top and the bottom end of the second reaction kettle 2 pass through conveying pipeline 4 with the top of third reaction kettle 3 and connect, and are arranged on conveying pipeline 4 Have delivery pump 5, method the following steps are included:
Step S1: the potassium hydroxide solution that mass fraction is 80% is poured into the first reaction kettle 1 and is heated to 220-240 DEG C;
Step S2: being made pyrolusite powder by pulverizer for pyrolusite, launches into the second reaction kettle 2, then by the first reaction kettle 1 Potassium hydroxide solution under interior liquid phase molten condition is poured into the second reaction kettle 2;
Step S3: the second reaction kettle 2 of heating makes its temperature rise to 310 DEG C or so, and sprays into air, same time control by air-jet device Agitating device processed is stirred, and after reaction 5 hours, the manganese dioxide in pyrolusite made is completely oxidized to potassium manganate;
Step S4: the solution in the second reaction kettle 2 is pumped into third reaction kettle 3, is leaked by the Bu Shi inside third reaction kettle 3 After bucket 14 filters, unreacted manganese dioxide is removed, then water is added to 3 lower end of third reaction kettle and is diluted, the filter after dilution Liquid stands cooling, so that potassium manganate crystallizes out.
Agitating device includes blender 6 and stirring motor 7, and the inside of the second reaction kettle 2, stirring electricity is arranged in blender 6 The top of the second reaction kettle 2 is arranged in machine 7, and the blade on blender 6 is set as helical form.
Air-jet device includes tracheae 8, gas nozzle 10, blower 11, purifying box 12 and air inlet bucket 13, and tracheae 8 is fixed at On the upper end inner wall of two reaction kettles 2, gas nozzle 10 is provided on tracheae 8, gas nozzle 10 is provided with several, several gas nozzles 10 are along circle It is uniformly arranged in week on the inner wall of the second reaction kettle 2, the end of tracheae 8 passes through the side of the second reaction kettle 2 and going out for blower 11 Mouth connection, the import of blower 11 are connect with the outlet of purifying box 12, and the entrance of purifying box 12 is fixedly installed air inlet bucket 13, spray The whiff pressure of device of air is arranged in 0.2MPa or so.
Cooling water pipe 9 is provided on the outer wall of third reaction kettle 3, disk is located at third reaction kettle 3 to cooling water pipe 9 in the shape of a spiral Outer wall on, the inner upper end of third reaction kettle 3 is fixedly installed Buchner funnel 14, and the lower end side of third reaction kettle 3 opens up There is filler 15.
Anode in electrolytic cell is set as nickel plate, and the cathode in electrolytic cell is set as iron bar, the area ratio of anode and cathode It is set as 1:6, the current capacity of electrolytic cell is set as 1000A/m3, and the tank voltage of electrolytic cell is set as 2.5V.
Embodiment 1:
Step S1: weighing 340g potassium manganate crystal by electronic scale, by the 340g potassium manganate crystal be put into electrolytic cell be added water, Potassium hydroxide solution is configured to electrolyte, and wherein potassium manganate is set as 180g/L, and potassium hydroxide is set as 60g/L;
Step S2: heating electrolytic cell, so that electrolyte temperature remains at 70 DEG C or so, then is powered and is ionized, Potassium manganate is oxidized to potassium permanganate in anode, and crystallization is precipitated;
Step S3: it is centrifugated after electrolyte is cooling through centrifuge and potassium permanganate crude product is made;
Step S4: using the dissolubility difference of potassium permanganate at different temperatures, potassium permanganate crude product is carried out by recrystallization Purification, steps are as follows for specific purification operations:
Step S41: it takes out a certain amount of potassium permanganate crude product and is put into purification container, be added one according to the solubility of potassium permanganate Quantitative aqueous solution;
Step S42: 40-60 DEG C is heated to purification container, potassium permanganate starts to dissolve at this time;
After step S43:20-40 minutes, solution is filtered by pan, impurity is filtered out;
Step S44: carrying out cooling down for filtered aqueous solution again, and potassium permanganate is crystallized out from aqueous solution, and filtering is received Collection;
Step S45: it if the purity of potassium permanganate does not reach requirement once, repeats above operation and is repeatedly purified.
Embodiment 2:
Step S1: weighing 440g potassium manganate crystal by electronic scale, by the 440g potassium manganate crystal be put into electrolytic cell be added water, Potassium hydroxide solution is configured to electrolyte, and wherein potassium manganate is set as 220g/L, and potassium hydroxide is set as 65g/L;
Step S2: heating electrolytic cell, so that electrolyte temperature remains at 70 DEG C or so, then is powered and is ionized, Potassium manganate is oxidized to potassium permanganate in anode, and crystallization is precipitated;
Step S3: it is centrifugated after electrolyte is cooling through centrifuge and potassium permanganate crude product is made;
Step S4: using the dissolubility difference of potassium permanganate at different temperatures, potassium permanganate crude product is carried out by recrystallization Purification, steps are as follows for specific purification operations:
Step S41: it takes out a certain amount of potassium permanganate crude product and is put into purification container, be added one according to the solubility of potassium permanganate Quantitative aqueous solution;
Step S42: 40-60 DEG C is heated to purification container, potassium permanganate starts to dissolve at this time;
After step S43:40-60 minutes, solution is filtered by pan, impurity is filtered out;
Step S44: carrying out cooling down for filtered aqueous solution again, and potassium permanganate is crystallized out from aqueous solution, and filtering is received Collection;
Step S45: it if the purity of potassium permanganate does not reach requirement once, repeats above operation and is repeatedly purified.
Embodiment 3:
Step S1: weighing 540g potassium manganate crystal by electronic scale, by the 540g potassium manganate crystal be put into electrolytic cell be added water, Potassium hydroxide solution is configured to electrolyte, and wherein potassium manganate is set as 260g/L, and potassium hydroxide is set as 70g/L;
Step S2: heating electrolytic cell, so that electrolyte temperature remains at 70 DEG C or so, then is powered and is ionized, Potassium manganate is oxidized to potassium permanganate in anode, and crystallization is precipitated;
Step S3: it is centrifugated after electrolyte is cooling through centrifuge and potassium permanganate crude product is made;
Step S4: using the dissolubility difference of potassium permanganate at different temperatures, potassium permanganate crude product is carried out by recrystallization Purification, steps are as follows for specific purification operations:
Step S41: it takes out a certain amount of potassium permanganate crude product and is put into purification container, be added one according to the solubility of potassium permanganate Quantitative aqueous solution;
Step S42: 40-60 DEG C is heated to purification container, potassium permanganate starts to dissolve at this time;
After step S43:60-80 minutes, solution is filtered by pan, impurity is filtered out;
Step S44: carrying out cooling down for filtered aqueous solution again, and potassium permanganate is crystallized out from aqueous solution, and filtering is received Collection;
Step S45: it if the purity of potassium permanganate does not reach requirement once, repeats above operation and is repeatedly purified.
The Purity of measurement potassium permanganate, which is provided that, takes a certain amount of a grams of potassium permanganate sample, puts and adds in test tube Heat is to complete reaction, after cooling, by electronic scale remaining solid quality is referred to as b grams, then according to chemical equation: 2KMnO4=K2MnO4+MnO4+O2, then the quality of oxygen is a-b grams, therefore KMnO4Quality can by molecular formula calculate be 316* (a-b)/32, KMnO4Quality can calculate its purity divided by gross mass.
It can to sum up obtain, the present invention passes through the first reaction kettle 1 of setting, the second reaction kettle 2, third reaction kettle 3 and blender 6, Solve traditional liquid phase electrolysis method production potassium permanganate low efficiency, the undesirable problem of purity.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (9)

1. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method, including the first reaction kettle (1), the second reaction kettle (2) and third reaction kettle (3), it is characterised in that: the described method comprises the following steps:
Step S1: the potassium hydroxide solution that mass fraction is 80% is poured into the first reaction kettle (1) and is heated to 220-240 DEG C;
Step S2: being made pyrolusite powder by pulverizer for pyrolusite, launches into the second reaction kettle (2), then first is reacted Potassium hydroxide solution under the interior liquid phase molten condition of kettle (1) is poured into the second reaction kettle (2);
Step S3: heating the second reaction kettle (2) makes its temperature rise to 310 DEG C or so, and sprays into air by air-jet device, simultaneously Control agitating device is stirred, and after reaction 5 hours, the manganese dioxide in pyrolusite made is completely oxidized to potassium manganate;
Step S4: the solution in the second reaction kettle (2) is pumped into third reaction kettle (3), internal by third reaction kettle (3) After Buchner funnel (14) filters, unreacted manganese dioxide is removed, then water is added to third reaction kettle (3) lower end and is diluted, Filtrate after dilution stands cooling, so that potassium manganate crystallizes out;
Step S5: the taking-up of potassium manganate crystal is put into addition water, potassium hydroxide solution in electrolytic cell and is configured to electrolyte, wherein manganese Sour potassium is set as 220g/L, and potassium hydroxide is set as 65g/L;
Step S6: heating electrolytic cell, so that electrolyte temperature remains at 70 DEG C or so, then is powered and is ionized, Potassium manganate is oxidized to potassium permanganate in anode, and crystallization is precipitated;
Step S7: it is centrifugated after electrolyte is cooling through centrifuge and potassium permanganate crude product is made;
Step S8: using the dissolubility difference of potassium permanganate at different temperatures, potassium permanganate crude product is carried out by recrystallization Purification, steps are as follows for specific purification operations:
Step S81: it takes out a certain amount of potassium permanganate crude product and is put into purification container, be added one according to the solubility of potassium permanganate Quantitative aqueous solution;
Step S82: 40-60 DEG C is heated to purification container, potassium permanganate starts to dissolve at this time;
After step S83:40-60 minutes, solution is filtered by pan, impurity is filtered out;
Step S84: carrying out cooling down for filtered aqueous solution again, and potassium permanganate is crystallized out from aqueous solution, and filtering is received Collection;
Step S85: it if the purity of potassium permanganate does not reach requirement once, repeats above operation and is repeatedly purified.
2. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method according to claim 1, it is characterised in that: The bottom end and third reaction kettle of the bottom end of first reaction kettle (1) and the top of the second reaction kettle (2) and the second reaction kettle (2) (3) top passes through conveying pipeline (4) connection, is provided with delivery pump (5) on the conveying pipeline (4).
3. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method according to claim 1, it is characterised in that: The agitating device includes blender (6) and stirring motor (7), and the blender (6) is arranged in the interior of the second reaction kettle (2) Portion, the stirring motor (7) is arranged at the top of the second reaction kettle (2), and the blade on the blender (6) is set as spiral Shape.
4. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method according to claim 1, it is characterised in that: The air-jet device includes tracheae (8), gas nozzle (10), blower (11), purifying box (12) and air inlet bucket (13), the tracheae (8) It is fixed on the upper end inner wall of the second reaction kettle (2), is provided with gas nozzle (10) on the tracheae (8), the tracheae (8) The side that end passes through the second reaction kettle (2) is connect with the outlet of blower (11), the import of the blower (11) and purifying box (12) outlet connection, the entrance of the purifying box (12) are fixedly installed air inlet bucket (13).
5. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method according to claim 4, it is characterised in that: The gas nozzle (10) is provided with several, several described gas nozzles (10) are uniformly arranged along the circumference in the interior of the second reaction kettle (2) On wall.
6. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method according to claim 1, it is characterised in that: The whiff pressure of the air-jet device is arranged in 0.8MPa or so.
7. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method according to claim 1, it is characterised in that: It is provided with cooling water pipe (9) on the outer wall of the third reaction kettle (3), disk is located at third to the cooling water pipe (9) in the shape of a spiral On the outer wall of reaction kettle (3).
8. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method according to claim 1, it is characterised in that: Anode in the electrolytic cell is set as nickel plate, and the cathode in the electrolytic cell is set as iron bar, the face of the anode and cathode Product ratio is set as 1:6, and the current capacity of the electrolytic cell is set as 1200A/m3, and the tank voltage of the electrolytic cell is set as 2.5V。
9. a kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method according to claim 1, it is characterised in that: The inner upper end of the third reaction kettle (3) is fixedly installed Buchner funnel (14), the lower end side of the third reaction kettle (3) Offer filler (15).
CN201811296258.5A 2018-11-01 2018-11-01 A kind of method that purification potassium permanganate is collected in the production of liquid phase electrolysis method Pending CN109208022A (en)

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Publication number Priority date Publication date Assignee Title
GB292991A (en) * 1927-06-29 1929-01-31 Ste Chim Usines Rhone Process for the manufacture of potassium manganate
US2843537A (en) * 1957-01-09 1958-07-15 Carus Chemical Company Production of potassium permanganate
US5660712A (en) * 1995-06-07 1997-08-26 Carus, Iii; Paul Electrolytic production of potassium permanganate using a cationic membrane in an electrolytic cell
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