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公开(公告)号：EP2557067A1
公开(公告)日：2013-02-13
申请号：EP10848733.1
申请日：2010-07-20
发明人： JIANG, Zhiguang , HUA, Dong
IPC分类号： C01G45/10
CPC分类号： C01G45/10
摘要： Provided is a method for preparing manganese sulfate monohydrate, which comprises the following steps: (1) reacting MnO with (NH 4 ) 2 SO 4 solution under heat, and separating solid from liquid after reaction; 2) determining the concentration of MnSO 4 in the resulting solution of step 1), adding equimolar ammonium sulfide solution thereto to carry out reaction under agitation, separating solid from liquid after reaction, and then washing solid phase; 3) dissolving the solid phase with concentrated sulfuric acid, adding hydrogen peroxide to the obtained solution, heating to boiling, adjusting the pH value of the solution to 5-6, removing the solid phase through precise filtration, evaporating and oven drying the filtrate to obtain MnSO 4 •H 2 O product. The impurities are separated away and the amount of byproducts is reduced by this method, and the yield of manganese sulfate monohydrate is improved.
摘要翻译： 本发明提供一种制备硫酸锰一水合物的方法，包括以下步骤：（1）将MnO与（NH4）2SO4溶液加热反应，反应后将固体与液体分离; 2）测定步骤1）所得溶液中MnSO4的浓度，加入等摩尔硫化铵溶液搅拌反应，反应后将固体与液体分离，然后洗涤固相; 3）用浓硫酸溶解固相，向得到的溶液中加入过氧化氢，加热至沸腾，调节溶液的pH值至5-6，精密过滤除去固相，蒸发并烘干滤液至 获得MnSO4•H2O产品。 通过该方法杂质被分离并且副产物的量被减少，并且硫酸锰一水合物的产率得到改善。
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22.发明公开
公开(公告)号：EP0232766A3
公开(公告)日：1988-12-21
申请号：EP87100866
申请日：1987-01-22
IPC分类号： C01B7/07 , C01B17/90 , C01B25/234 , C01B25/238 , C01B25/24 , C01G45/10 , C22B3/00 , C22B13/08 , C22B30/00
CPC分类号： C01B17/901 , C01B7/0706 , C01B25/238 , C01B25/24 , C01G45/10
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24.发明公开Verfahren zum Aufschluss von Manganerzen mittels Schwefeldioxid 失效Verfahren zum Aufschluss von Manganerzen手套Schwefeldioxid。
公开(公告)号：EP0090390A2
公开(公告)日：1983-10-05
申请号：EP83103038.2
申请日：1983-03-26
申请人： Grillo-Werke AG
摘要： Braunstein-haltige Manganerze werden in wäßriger Suspension mittels Schwefeldioxid und Luft dadurch aufgeschlossen, daß man Schwefeldioxid in reiner Form einspeist und die Luftzufuhr so regelt, daß ein Partialdruckverhältnis pS0 2 : pO 2 von 4 bis 14, vorzugsweise 8 bis 12, und ein pH-Wert von höher als 4, vorzugsweise höher als 4,2, eingehalten wird. Das Verfahren ist allein für die Messung des pH-Wertes steuerbar, sehr umweltfreundlich und mit großer Wirtschaftlichkeit durchführbar.
摘要翻译： 1.一种通过用纯二氧化硫和空气处理水性悬浮液来处理二氧化锰矿石的方法，其特征在于供应二氧化硫并控制空气供应，使得pSO 2 :PO 2的分压比为4至 14，并且保持高于4的pH值。
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25.发明公开Process for making manganous sulphate solution 失效Verfahren zur Herstellung einerMangansulfatlösung。
公开(公告)号：EP0037863A1
公开(公告)日：1981-10-21
申请号：EP80301020.6
申请日：1980-04-01
CPC分类号： H01M4/50 , C01G45/02 , C01G45/10 , C01P2006/80 , C22B47/00
摘要： The present invention describes a method of making manganous sulphate solution with low level impurity of potassium from high potassium ores which comprises adding the reduced ore to spent electrolyte containing ferric ions and digesting same at pH 1-2 and temperature of 60-90°C for 1-4 hours, and if desired thereafter again adding reduced ore to the digested product till pH is raised to 4-6.
摘要翻译： 本发明描述了一种从高钾矿石制备低含量钾的硫酸锰溶液的方法，该方法包括将还原的矿石加入到含有铁离子的废电解质中并在pH 1-2和60-90℃的温度下消化， 1-4小时，如果需要，再次将还原的矿石加入到消化的产物中，直到pH升至4-6。
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公开(公告)号：EP3967660A3
公开(公告)日：2022-07-20
申请号：EP21214209.5
申请日：2021-12-13
发明人： Tsurtsumia, Gigla , Lezhava, Tinatin , Shengelia, Jemal , Koiava, Nana , Gogoli, Davit , Beriashvili, Levan
摘要： The invention relates to a method for producing manganese sulfate monohydrate.
According to the invention, this method comprises:
• a stage of electric leaching (S2) of manganese-comprising ore at a temperature from 20°C to 40°C and under constant air purging in a diaphragm-less electrolyzer,
• stages of jarosite (S3), hydrolytic (S4), sulfide (S5) and fluoride (S6) purification of the obtained solutions,
• a stage of autoclave crystallization (S7) of a salt at a temperature from 160°C to 165°C and at a pressure from 0,60 MPa to 0,65 MPa.
In addition, the stage of electric leaching (S2) is performed with a concentration of iron ions from 3,5 g/l to 4,5 g/l using a stainless steel mesh as a cathode with a cathode current density from 200 A/m 2 to 250 A/m 2 . A process control at the electric leaching stage (S2) is carried out by changing a value of a redox potential of a Fe 3+ /Fe 2+ system. The obtained salt is flushed with anhydrous methanol at a temperature from 30°C to 40°C during from 0,5 hour to 1 hour, while a ratio of a salt crystal mass and an anhydrous methanol volume is 1/2,5 kg/I.-
公开(公告)号：EP3967660A2
公开(公告)日：2022-03-16
申请号：EP21214209.5
申请日：2021-12-13
发明人： Tsurtsumia, Gigla , Lezhava, Tinatin , Shengelia, Jemal , Koiava, Nana , Gogoli, Davit , Beriashvili, Levan
摘要： The invention relates to a method for producing manganese sulfate monohydrate.
According to the invention, this method comprises:
• a stage of electric leaching (S2) of manganese-comprising ore at a temperature from 20°C to 40°C and under constant air purging in a diaphragm-less electrolyzer,
• stages of jarosite (S3), hydrolytic (S4), sulfide (S5) and fluoride (S6) purification of the obtained solutions,
• a stage of autoclave crystallization (S7) of a salt at a temperature from 160°C to 165°C and at a pressure from 0,60 MPa to 0,65 MPa.
In addition, the stage of electric leaching (S2) is performed with a concentration of iron ions from 3,5 g/l to 4,5 g/l using a stainless steel mesh as a cathode with a cathode current density from 200 A/m 2 to 250 A/m 2 . A process control at the electric leaching stage (S2) is carried out by changing a value of a redox potential of a Fe 3+ /Fe 2+ system. The obtained salt is flushed with anhydrous methanol at a temperature from 30°C to 40°C during from 0,5 hour to 1 hour, while a ratio of a salt crystal mass and an anhydrous methanol volume is 1/2,5 kg/I.-
公开(公告)号：EP3770116A1
公开(公告)日：2021-01-27
申请号：EP19785034.0
申请日：2019-04-09
发明人： LA, Yeon Hwa , CHO, Kwang Kuk , KOO, Min Su , RYU, Ja Young , SON, Sung Real
摘要： In a method of recovering an active metal of a lithium secondary battery, a cathode active material mixture obtained from a used cathode of a lithium secondary battery is prepared. The cathode active material mixture is reacted in a fluidized bed reactor to form a preliminary precursor mixture. A lithium precursor is recovered from the preliminary precursor mixture. Yield and selectivity of a lithium precursor can be improved using the fluidized bed reactor.
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