CN105040038A - Method for carrying out demagging on electrolytic manganese anolyte with ammonium sulfate - Google Patents

Method for carrying out demagging on electrolytic manganese anolyte with ammonium sulfate Download PDF

Info

Publication number
CN105040038A
CN105040038A CN201510394768.6A CN201510394768A CN105040038A CN 105040038 A CN105040038 A CN 105040038A CN 201510394768 A CN201510394768 A CN 201510394768A CN 105040038 A CN105040038 A CN 105040038A
Authority
CN
China
Prior art keywords
electrolytic manganese
demagging
ammonium
ammonium sulfate
anolyte
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510394768.6A
Other languages
Chinese (zh)
Other versions
CN105040038B (en
Inventor
熊雪良
叶万奇
何利民
刘雪莹
李重洋
杨智
唐三川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changsha Research Institute of Mining and Metallurgy Co Ltd
Original Assignee
Changsha Research Institute of Mining and Metallurgy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changsha Research Institute of Mining and Metallurgy Co Ltd filed Critical Changsha Research Institute of Mining and Metallurgy Co Ltd
Priority to CN201510394768.6A priority Critical patent/CN105040038B/en
Publication of CN105040038A publication Critical patent/CN105040038A/en
Application granted granted Critical
Publication of CN105040038B publication Critical patent/CN105040038B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

A method for carrying out demagging on electrolytic manganese anolyte with ammonium sulfate includes the following steps that the electrolytic manganese anolyte generated in the electrolytic manganese industry is added into a stirring crystallizer tank; the solid ammonium sulfate is added into the stirring crystallizer tank gradually while being stirred and dissolved; crystal substances are crystallized out after all the solid ammonium sulfate is added; filtering is carried out after a crystallization reaction is sufficiently carried out; filtrate obtained through filtering is used for chemical combination leaching of electrolytic manganese circularly, and filter residues obtained after filtering are recycled to obtain composite salt. The method for carrying out demagging on the electrolytic manganese anolyte with the ammonium sulfate is simple in process, easy and convenient to operate, and capable of obviously lowering the manganese concentration of the electrolytic manganese anolyte and keeping the electrolytic manganese return to the concentration of the anolyte.

Description

Using sulfated ammonium carries out the method for demagging to electrolytic manganese anolyte
Technical field
The invention belongs to non-ferrous metal technical field of wet metallurgy, the method for particularly demagging in a kind of electrolytic manganese production process.
Background technology
In current electrolysis manganese industrial production, raw material manganese ore containing have an appointment 2% magnesium oxide, major part is in leaching operation stripping, and leach liquor is the electrolytic manganese anolyte recycled, and causes the MgSO in system 4accumulation reaches more than 150g/L, this brings a lot of difficulty to production, as: (1) makes the viscosity of electrolytic solution, density increases, electric conductivity declines, and causes the ion diffuse in electrolytic solution to be hindered, and bath voltage rises, current efficiency reduces, thus reduce the production efficiency of electrolyzer, add production energy consumption, add the production cost of manganese; (2) purity and the quality of manganese product is affected; (3) in electrode, e-quipment and pipe, separate out material brokenly form crystallization, transport pipe is produced in serious meeting blocking, brings very large difficulty to operation, and even impact is normal produces.
Domestic many research workers propose the method for some electrolytic manganese production demaggings, as the fluorochemical precipitator method, oxalate precipitation method, recrystallization method etc., but have undesirable part.Oxalate precipitation method can introduce new impurity, and needs the pH value of regulator solution, adds Financial cost.Fluorochemical precipitator method aspect, someone studies and selects MnF 2as precipitation agent (as people such as Liu Honggang, calcium magnesium [J] in manganous fluoride deposition removal reduction-oxidation Leaching Solution of Manganese Ore. mining and metallurgy, 2007,16 (4): 25-28.), precipitation temperature be 90 DEG C, precipitation agent use level coefficient is 1.5, churning time is 1h, stock liquid pH value is 4.0 time, the deposition rate of calcium and magnesium reaches 96% and 99% respectively, and sedimentation effect is very good, but the MnF that this method uses 2requirement purity is high, and preparation cost is also high, and without ready-made commodity, is by MnSO in test 4with NH 4f reacts self-control and forms; Fluoride salt consumption excess coefficient is large simultaneously, and remaining content of fluoride ion increases, and anticathode plate has stronger corrosive nature, causes shorten the work-ing life of negative plate.Recrystallization method utilizes MgSO 4and MnSO 4the difference of solubleness at different temperatures, realizes the separation of magnesium manganese by crystallization.But temperature is lower than MgSO when 100 DEG C 4-MnSO 4there is mixed crystal to separate out during water system crystallization, cause separating effect undesirable; Although temperature can be separated preferably higher than when 100 DEG C, also there is energy consumption high, inefficient shortcoming.
Application number is that the Chinese patent of CN201110024249 discloses a kind of method for removing magnesium via cycle of ethanol in electrolytic manganese machining process, the steps include: to add dehydrated alcohol in electrolytic manganese anolyte, its add-on 80 ~ 125g/1, after stirring, adjustment solution temperature is at 35 DEG C ~ 55 DEG C, there is a large amount of salt precipitation in the magnesium sulfate in anolyte, then by anolyte filtering separation, namely removes saturated magnesium sulfate precipitation in anolyte.Solution after filtration after process can be separated ethanol distillation by the method for distillation, realizes ethanol and reclaims and recycle.The shortcoming of the method introduces new organism phase, and ethanol distillation is difficult to thorough precipitation, and circular treatment operation is cumbersome, and the removal rate of magnesium is not high, and during demagging, the loss of ammonium is also larger.
Summary of the invention
Technical problem to be solved by this invention is, overcome the deficiency and defect mentioned in above background technology, provide a kind of technique simple, easy and simple to handle, can significantly reduce the magnesium density in electrolytic manganese anolyte and the using sulfated ammonium keeping electrolytic manganese to return anolyte purity carries out the method for demagging to electrolytic manganese anolyte.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of using sulfated ammonium carries out demagging method to electrolytic manganese anolyte, comprises the following steps:
The electrolytic manganese anolyte that electrolytic manganese industry produces is added in a stirred crystallization groove, then in stirred crystallization groove, ammonium sulfate solids is added, stirring and dissolving is while add ammonium sulfate solids on one side, recrystallize crystallization thing after ammonium sulfate solids interpolation, filters after crystallization reaction is abundant; Filtrate cycle after filtration is used for electrolytic manganese chemical combination and leaches, and the filter residue reclaimed after filtering obtains composite salt.
Above-mentioned using sulfated ammonium carries out the method for demagging to electrolytic manganese anolyte, preferably, and MnSO in described electrolytic manganese anolyte 4concentration is 30g/l ~ 45g/l, MgSO 4concentration is 120g/l ~ 200g/l, (NH 4) 2sO 4concentration is 70g/l ~ 90g/l.
Above-mentioned using sulfated ammonium carries out the method for demagging to electrolytic manganese anolyte, preferably, the add-on of described ammonium sulfate controls to be as the criterion at 150g/l ~ 250g/l with the starting point concentration of ammonium sulfate in solution system.We are according to the ammonium sulfate concentrations in electrolytic manganese anode rework solution, and calculate the ammonium sulfate solids amount needing newly to add, most preferred ammonium sulfate starting point concentration is about about 200g/l.The ammonium sulfate solids of described interpolation is preferably technical grade ammonium sulfate product or byproduct of ammonium sulfate.
Above-mentioned using sulfated ammonium carries out the method for demagging to electrolytic manganese anolyte, preferably, the described composite salt crystallisate of separating out is six water magnesium sulfate ammoniums, the crystalline hydrate thing that sulfate ion, ammonium radical ion, magnesium ion and water that described six water magnesium sulfate ammoniums produce after being dissolved by ammonium sulfate form.The molecular formula of described six water magnesium sulfate ammoniums is: (NH 4) 2sO 4mgSO 46H 2o, the solubility property of this composite salt crystallisate in water is good, can be used as novel containing manganese magnesium nitrogen composite fertilizer, also can as other fertilizer materials or magnesium source material.
Above-mentioned using sulfated ammonium carries out the method for demagging to electrolytic manganese anolyte, preferably, adopt strong stirring mode (preferred stirring velocity is 800 ~ 2000r/min) during described stirring and dissolving, and described ammonium sulfate solids continues stirring 0.5 ~ 2.0h(more preferably about 1h after adding again).Due to the crystallisation process of the dissolution process and ammonium magnesium sulfate composite salt that there is ammonium sulfate in stirred crystallization groove, only have after ammonium sulfate all dissolves, its utilization ratio just can reach the highest, and therefore the dissolving initial stage of ammonium sulfate selects strong stirring, increases the dissolution degree of ammonium sulfate as far as possible.
Above-mentioned using sulfated ammonium carries out the method for demagging to electrolytic manganese anolyte, preferably, stop when described crystallization process starts stirring, carry out spontaneous nucleation reaction under static conditions, and the time controling of crystallization reaction is 2.0 ~ 6.0h(, and the preferred crystallization reaction time is about 3.0h).
Above-mentioned using sulfated ammonium carries out the method for demagging to electrolytic manganese anolyte, preferably, and the MnSO in described filtrate 4concentration 25g/l ~ 36g/l, MgSO 4concentration is 60g/l ~ 110g/l, (NH 4) 2sO 4concentration is 90g/l ~ 130g/l.This filtrate is the solution substantially identical with former electrolytic manganese anode rework solution component, but after crystallization demagging, in filtrate, the concentration of magnesium sulfate reduces greatly, ammonium sulfate concentrations increases significantly, manganous sulfate concentration is in a slight decrease, this carries loss owing to ammonium magnesium sulfate crystallization, and the filtrate of acquisition meets the requirement that electrolytic solution returns recycle completely.
Technique scheme of the present invention is mainly based on following principle: the present invention by adding ammonium sulfate and making it fully dissolve in electrolytic manganese anolyte, this considerably increases the sulfate ion in solution system and ammonium radical ion, a large amount of sulfate ions, ammonium radical ion and magnesium ion form composite salt crystal, and separate out from solution system, concrete reaction formula is:
2SO 4 2-+Mg 2++2NH 4 ++6H 2O=(NH 4) 2SO 4·MgSO 4·6H 2O；
The composite salt crystal of separating out has taken away the magnesium in solution, reaches the effect of demagging.In addition, the ammonium sulfate solids of interpolation can be absorbed heat when dissolving, and the temperature of solution system is decreased, and this is more conducive to the crystallization content increasing ammonium magnesium sulfate composite salt, improves demagging effect.
Compared with prior art, the invention has the advantages that:
First, raw material of the present invention is very simple and be easy to get, only select reagent of sulfuric acid ammonium solid, particularly when preferred ammonium sulfate derives from other industrial byproduct (as the ammonia in sulfuric acid absorption coke(oven)gas, ammonia absorption smeltery sulfur dioxide in flue gas etc.), price is more cheap and economy is better.
The second, method demagging rate of the present invention is higher, and demagging rate can reach 40% ~ 70%, effectively by the magnesium removing in electrolytic manganese anolyte, also can increase the ammonium sulfate concentrations in cyclic electrolysis manganese anolyte simultaneously.
3rd, the ammonium sulfate that the present invention adds, as precipitation agent, only removes a large amount of magnesium ions, and does not bring other new impurity into, originally do not affect, maintain the purity of cyclic electrolysis manganese anolyte to manganese, acidic group.
4th, because present invention process is simple, raw material is cheap and easy to get, thus demagging advantage of lower cost, and salable byproduct six water magnesium sulfate ammonium can also be obtained, substantially increase economic benefit.
On the whole, method of the present invention not only technique is simple, easy and simple to handle, and the magnesium density greatly reduced in electrolytic manganese anode rework solution, and maintain the purity of electrolytic manganese anode rework solution, be the method for demagging in a kind of simple and effective electrolytic manganese anolyte.
Embodiment
embodiment 1:
Using sulfated ammonium of the present invention carries out a method for demagging to electrolytic manganese anolyte, comprise the following steps:
(1) by the electrolytic manganese anolyte that the industry of 1000ml electrolytic manganese produces, concentration of component wherein comprises: MnSO 439.7g/l, MgSO 4concentration 187.3g/l, (NH 4) 2sO 4concentration 79.3g/l; Add in a stirred crystallization groove, then in stirred crystallization groove, add 150.0g ammonium sulfate solids, stirring and dissolving, while add ammonium sulfate solids, makes the starting point concentration of ammonium sulfate in solution system control at 214.5g/l;
(2) stirring and dissolving of above-mentioned ammonium sulfate adopts strong stirring mode, mixing speed 1200r/min, and ammonium sulfate solids continues after adding to stir 1.5h again, recrystallize crystallization thing after stirring, stop when crystallization process starts stirring, carry out spontaneous nucleation reaction under static conditions, and the time controling of crystallization reaction is 5.0h, carry out slip suction filtration after crystallization reaction is abundant, obtain filtrate and filter residue;
(3) the isolated filtrate of suction filtration contains MnSO 4concentration 32.7g/l, MgSO 4concentration 68.3g/l, (NH 4) 2sO 4concentration 118.6g/l, it meets electrolytic manganese and returns the requirement that anolyte recycles, and the chemical combination that can be directly used in electrolytic manganese leaches workshop, recycles;
(4) isolated filter residue is composite salt crystallisate is six water magnesium sulfate ammoniums, the crystalline hydrate thing that sulfate ion, ammonium radical ion, magnesium ion and water that this six water magnesium sulfates ammonium produces after being dissolved by ammonium sulfate form, crystallisate is dried, weight is 327.4g, can be used as novel containing manganese magnesium nitrogen composite fertilizer.
Electrolytic manganese after the process of the present embodiment method returns demagging rate in anolyte can reach 64.5%.
embodiment 2
Using sulfated ammonium of the present invention carries out a method for demagging to electrolytic manganese anolyte, comprise the following steps:
(1) by the electrolytic manganese anolyte that the industry of 1000ml electrolytic manganese produces, concentration of component wherein comprises: MnSO 4concentration 39.7g/l, MgSO 4concentration 187.3g/l, (NH 4) 2sO 4concentration 79.3g/l; Add in a stirred crystallization groove, then in stirred crystallization groove, add 75.0g ammonium sulfate solids, stirring and dissolving, while add ammonium sulfate solids, makes the starting point concentration of ammonium sulfate in solution system control at 157.7g/l;
(2) strong stirring mode is adopted during the stirring and dissolving of above-mentioned ammonium sulfate, mixing speed is 850r/min, and ammonium sulfate solids continues after adding to stir 1.0h again, recrystallize crystallization thing after stirring, stop when crystallization process starts stirring, carry out spontaneous nucleation reaction under static conditions, and the time controling of crystallization reaction is 4.0h, carry out slip suction filtration after crystallization reaction is abundant, obtain filtrate and filter residue;
(3) the isolated filtrate of suction filtration contains MnSO 4concentration 35.8g/l, MgSO 4concentration 104.3g/l, (NH 4) 2sO 4concentration 94.4g/l, it meets electrolytic manganese and returns the requirement that anolyte recycles, and the chemical combination that can be directly used in electrolytic manganese leaches workshop, recycles;
(4) isolated filter residue is composite salt crystallisate is six water magnesium sulfate ammoniums, the crystalline hydrate thing that sulfate ion, ammonium radical ion, magnesium ion and water that this six water magnesium sulfates ammonium produces after being dissolved by ammonium sulfate form, crystallisate is dried, weight is 214.8g, can be used as novel containing manganese magnesium nitrogen composite fertilizer.
Electrolytic manganese after the process of the present embodiment method returns demagging rate in anolyte can reach 44.9%.

Claims (8)

1. using sulfated ammonium carries out a method for demagging to electrolytic manganese anolyte, comprises the following steps:
The electrolytic manganese anolyte that electrolytic manganese industry produces is added in a stirred crystallization groove, then in stirred crystallization groove, ammonium sulfate solids is added, stirring and dissolving is while add ammonium sulfate solids on one side, recrystallize crystallization thing after ammonium sulfate solids interpolation, filters after crystallization reaction is abundant; Filtrate cycle after filtration is used for electrolytic manganese chemical combination and leaches, and the filter residue reclaimed after filtering obtains composite salt.
2. using sulfated ammonium according to claim 1 carries out the method for demagging to electrolytic manganese anolyte, it is characterized in that, MnSO in described electrolytic manganese anolyte 4concentration is 30g/l ~ 45g/l, MgSO 4concentration is 120g/l ~ 200g/l, (NH 4) 2sO 4concentration is 70g/l ~ 90g/l.
3. using sulfated ammonium according to claim 1 carries out the method for demagging to electrolytic manganese anolyte, it is characterized in that, the add-on of described ammonium sulfate controls to be as the criterion at 150g/l ~ 250g/l with the starting point concentration of ammonium sulfate in solution system.
4. using sulfated ammonium according to claim 1 carries out the method for demagging to electrolytic manganese anolyte, it is characterized in that, the described composite salt crystallisate of separating out is six water magnesium sulfate ammoniums, the crystalline hydrate thing that sulfate ion, ammonium radical ion, magnesium ion and water that described six water magnesium sulfate ammoniums produce after being dissolved by ammonium sulfate form.
5. using sulfated ammonium according to claim 1 carries out the method for demagging to electrolytic manganese anolyte, it is characterized in that, adopts strong stirring mode during described stirring and dissolving, and described ammonium sulfate solids continues stirring 0.5 ~ 2.0h after adding again.
6. using sulfated ammonium according to claim 5 carries out the method for demagging to electrolytic manganese anolyte, it is characterized in that, it is 800 ~ 2000r/min that described strong stirring mode refers to that stirring velocity controls.
7. the using sulfated ammonium according to any one of claim 1 ~ 6 carries out the method for demagging to electrolytic manganese anolyte, it is characterized in that, stop when described crystallization process starts stirring, carry out crystallization reaction under static conditions, and the time controling of crystallization reaction is 2.0 ~ 6.0h.
8. the using sulfated ammonium according to any one of claim 1 ~ 6 carries out the method for demagging to electrolytic manganese anolyte, it is characterized in that, the MnSO in described filtrate 4concentration 25g/l ~ 36g/l, MgSO 4concentration is 60g/l ~ 110g/l, (NH 4) 2sO 4concentration is 90g/l ~ 130g/l.
CN201510394768.6A 2015-07-08 2015-07-08 The method for carrying out demagging to electrolytic manganese anolyte using ammonium sulfate Active CN105040038B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510394768.6A CN105040038B (en) 2015-07-08 2015-07-08 The method for carrying out demagging to electrolytic manganese anolyte using ammonium sulfate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510394768.6A CN105040038B (en) 2015-07-08 2015-07-08 The method for carrying out demagging to electrolytic manganese anolyte using ammonium sulfate

Publications (2)

Publication Number Publication Date
CN105040038A true CN105040038A (en) 2015-11-11
CN105040038B CN105040038B (en) 2017-07-07

Family

ID=54446999

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510394768.6A Active CN105040038B (en) 2015-07-08 2015-07-08 The method for carrying out demagging to electrolytic manganese anolyte using ammonium sulfate

Country Status (1)

Country Link
CN (1) CN105040038B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108164046A (en) * 2018-01-17 2018-06-15 郑州轻工业学院 A kind of method that high-concentration ammonia nitrogenous wastewater and recycling are handled with desulfurization wastewater
CN109680300A (en) * 2019-01-31 2019-04-26 贵州大学 A kind of method that complex salt crystal method removes magnesium in manganese sulfate solution
CN111647911A (en) * 2020-03-27 2020-09-11 昆明理工大学 Process for removing magnesium ions in electrolytic manganese anolyte
CN112553481A (en) * 2020-12-11 2021-03-26 中南大学 Production method of electrolytic manganese

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB581370A (en) * 1942-08-19 1946-10-10 Electro Manganese Corp Improvements in or relating to the electrowinning of manganese
CN1554595A (en) * 2003-12-30 2004-12-15 尹德文 Method for treating magnesium sulfate mather slution after producing boric acid by sulfuric acid method
CN102061486A (en) * 2010-10-12 2011-05-18 重庆大学 Method for reducing magnesium ion concentration of electrolytic manganese anolyte
CN102191378A (en) * 2010-03-15 2011-09-21 贵州省环境科学研究设计院 Electrolyte preparation process for electrolyzing manganese

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB581370A (en) * 1942-08-19 1946-10-10 Electro Manganese Corp Improvements in or relating to the electrowinning of manganese
CN1554595A (en) * 2003-12-30 2004-12-15 尹德文 Method for treating magnesium sulfate mather slution after producing boric acid by sulfuric acid method
CN102191378A (en) * 2010-03-15 2011-09-21 贵州省环境科学研究设计院 Electrolyte preparation process for electrolyzing manganese
CN102061486A (en) * 2010-10-12 2011-05-18 重庆大学 Method for reducing magnesium ion concentration of electrolytic manganese anolyte

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
徐锋等: "《化工安全》", 31 May 2015, 天津大学出版社 *
韩培伟等: ""锰电解返回液结晶沉淀问题研究"", 《铁合金》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108164046A (en) * 2018-01-17 2018-06-15 郑州轻工业学院 A kind of method that high-concentration ammonia nitrogenous wastewater and recycling are handled with desulfurization wastewater
CN109680300A (en) * 2019-01-31 2019-04-26 贵州大学 A kind of method that complex salt crystal method removes magnesium in manganese sulfate solution
CN111647911A (en) * 2020-03-27 2020-09-11 昆明理工大学 Process for removing magnesium ions in electrolytic manganese anolyte
CN112553481A (en) * 2020-12-11 2021-03-26 中南大学 Production method of electrolytic manganese

Also Published As

Publication number Publication date
CN105040038B (en) 2017-07-07

Similar Documents

Publication Publication Date Title
CN103922416B (en) A kind of method of Separation and Recovery iron from red mud
CN103526016B (en) A kind of method of raw material containing lead hydrometallurgic recovery
US20190048483A1 (en) Producing lithium directly from lithium feed sources
AU2014203346A1 (en) A process for making lithium carbonate from lithium chloride
CN105040038B (en) The method for carrying out demagging to electrolytic manganese anolyte using ammonium sulfate
CN112981104B (en) Method for treating cadmium-containing waste residues and recycling metal cadmium
CN113336246B (en) Resource treatment method of waste salt
CN105925819A (en) Method for comprehensively recycling lithium elements in aluminum electrolyte by utilizing acidifying roasting leaching process
CN104928469A (en) Method for removing magnesium in sulfuric acid leaching process of rhodochrosite
CN105039718B (en) A kind of synthetical recovery processing method of electrolytic manganese anolyte
CN108396158A (en) A kind of processing method of the complex salt crystal object of electrolytic manganese process
CN114314625A (en) Method for recovering fluoride salt from complex aluminum electrolyte
CN108910958A (en) A method of manganese sulfate is produced using aniline reduction electrolytic manganese anode mud
US6491807B2 (en) Process for producing sodium persulfate
CN106006675A (en) Method for preparing lithium hydroxide monohydrate by using lithium chloride solution as raw material
CN106757116A (en) A kind of ABS plates the method that metal charge produces spherical basic nickel carbonate
CN101759315B (en) Method for recycling waste diluted sulfuric acid from acid washing solution of steel
WO2013139228A1 (en) Method for preparing magnesium metal powder
CN103422111B (en) A kind of preparation method of sodium metavanadate
CN106637295A (en) Purifying method for process of preparing electrolytic manganese metal electrolyte
CN104947154B (en) A kind of method that demagging is carried out to electrolytic manganese anolyte
CN103774178A (en) Additive for electrolyzing manganese from manganese sulfate electrolyte system and application method of additive
CN102503812A (en) Method for increasing citric acid yield in extracting process of citric acid with calcium-salt method
RU2374343C1 (en) Method of vanadium extracting of water sodium-bearing solutions
CN104016415B (en) By the comprehensive utilization production method of hydrochloric acid method Production of Artificial Rutile waste liquid

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant