MANGANESE SULFATE PURIFICATION AND CRYSTALLIZATION METHOD

    公开(公告)号:EP4335823A1

    公开(公告)日:2024-03-13

    申请号:EP22806777.3

    申请日:2022-05-11

    IPC分类号: C01G45/10

    摘要: The present invention provides a manganese sulfate purification and crystallization method. The use amount and the type number of impurity removal agents used in the method of the present invention are small, a filtrate obtained after crystallization and filtration is distilled, recovered ethanol is used for circulating crystallization, a distilled liquid is used as a manganese slag leaching base solution again to be added into a reaction kettle, and sulfuric acid is added again for preparing a manganese sulfate solution by means of cyclic leaching. The process is simple and easy to implement, the additive amount is small, high-temperature crystallization is not needed, and process costs are greatly reduced.

    METHOD FOR PREPARING MANGANESE SULFATE
    5.
    发明公开
    METHOD FOR PREPARING MANGANESE SULFATE 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON MANGANSULFAT

    公开(公告)号:EP2455341A1

    公开(公告)日:2012-05-23

    申请号:EP10799405.5

    申请日:2010-06-13

    IPC分类号: C01G45/10

    摘要: Provided is a method for preparing manganese sulfate, which comprises the following steps: adding sulfide with reducing ability to manganese dioxide ore by quantification according to the reaction molar ratio to fully react, determining the end-point of reaction, and then separating and washing solid product; reacting the solid product with 9-12mol/L H 2 SO 4 , controlling the end-point of reaction to pH 3-5, keeping the MnSO 4 concentration in the reaction liquid within the range of 300 - 400g/L, and then separating solid from liquid after reaction; and using H 2 SO 4 to acidify the separated solution until the pH value of the solution is 2-3, adding hydrogen peroxide and heating, finely filtering to remove solid phase, and then vaporizing, condensing, crystallizing and dewatering the filtered liquid to obtain manganese sulfate. The method enables a plurality of heavy metals to be converted into indissoluble sulfides while obtaining manganous compounds that are dissoluble in acid. At the same time, manganese sulfate low in calcium, magnesium and heavy metals is obtained.

    摘要翻译: 本发明提供硫酸锰的制备方法,其特征在于,通过根据反应摩尔比定量添加二氧化锰矿还原能的硫化物进行充分反应,确定反应终点,然后分离洗涤固体 产品; 使固体产物与9-12mol / LH 2 SO 4反应,控制反应终点为pH 3-5,使反应液中的MnSO 4浓度保持在300-400g / L范围内,然后分离固体 反应后液体; 并使用H 2 SO 4将分离的溶液酸化直至溶液的pH值为2-3,加入过氧化氢并加热,精细过滤除去固相,然后蒸发,冷凝,结晶和脱水过滤液体,得到 硫酸锰。 该方法能够将多种重金属转化为不溶性硫化物,同时获得可溶于酸的二价锰化合物。 同时,获得了低钙,镁和重金属的硫酸锰。

    METHOD FOR PREPARING MANGANESE SULFATE MONOHYDRATE BY DESULFURIZING FUME WITH MIDDLE-LOW GRADE MANGANESE DIOXIDE ORE
    9.
    发明公开
    METHOD FOR PREPARING MANGANESE SULFATE MONOHYDRATE BY DESULFURIZING FUME WITH MIDDLE-LOW GRADE MANGANESE DIOXIDE ORE 有权
    用于生产硫酸锰脱硫RAUCHS由甲MANGANDIOXIDERZ MEDIUM-低三档

    公开(公告)号:EP2487137A1

    公开(公告)日:2012-08-15

    申请号:EP10821565.8

    申请日:2010-07-20

    IPC分类号: C01G45/10 B01D53/80 B01D53/50

    摘要: Provided is a method for preparing manganese sulfate monohydrate by desulfurizing fume with middle-low grade manganese dioxide ore, which comprises: preparing a slurry by using middle-low grade manganese dioxide ore powder, first putting sulfur-containing fume in an absorbing device and controlling gas velocity and gas-liquid ratio, and then adding manganese dioxide slurry and controlling the slurry to backwards flow relative to the sulfur-containing fume, discharging the desulfurized fume from the absorbing device, pressure-filtering and separating the slurry discharged from the absorbing device, recycling the mother liquor to the absorbing device, and continuing the recycling operation until the manganese sulfate in the mother liquor is >=200g/l, agitating and washing the obtained filter cake at 60-70°C, adjusting pH value of the clear solution obtained by pressure-filtering and separating to 2-4, adding manganese sulfide under agitation at 25-95 °C, and filtering and removing impurities, continuing agitating, pressure-filtering and separating, vaporizing the obtained clear filtrate, and obtaining manganese sulfate monohydrate after drying in the air stream. Desulfurizing efficiency is improved, the production cost of manganese sulfate is reduced, the recycling rate of total manganese is improved, and the valuable metals are recycled in high efficiency.

    摘要翻译: 提供了一种用于通过脱硫烟与中等低级二氧化锰矿,包括制备一水合硫酸锰的方法:通过使用中等低级二氧化锰粉矿,第一推杆含硫烟气在吸收装置和控制制备浆料 气体速度和气体 - 液体比,再加入二氧化锰浆液和控制浆料倒流相对于含硫硅粉,排出从吸收设备,压力过滤脱硫烟和分离从吸收装置中排出的淤浆 ,将母液再循环而到吸收装置,并继续循环操作,直到硫酸锰在母液中是> = 200克/升,搅拌并洗涤,在60-70℃下获得的滤饼,调整清晰的pH值 溶液通过加压过滤获得和分离至2-4,在25-95℃下添加在搅拌下的硫化锰,和过滤和除去IMPU rities,持续搅拌,压力过滤和分离,蒸发获得澄清的滤液,并在空气流中干燥后,获得一水合硫酸锰。 脱硫效率提高,硫酸锰的生产成本降低,总锰的再循环率提高,有价值的金属循环到高效率。

    Sulfate ferreux hydraté fluide, et procédé pour fluidiser des sulfates métalliques polyhydratés
    10.
    发明公开
    Sulfate ferreux hydraté fluide, et procédé pour fluidiser des sulfates métalliques polyhydratés 失效
    Flisessendes hydratisiertes Eisen-II-Sulfat und Verfahren zurVerflüssigungvon polyhydratisierten Metallsulfaten。

    公开(公告)号:EP0567373A1

    公开(公告)日:1993-10-27

    申请号:EP93400979.6

    申请日:1993-04-15

    申请人: SOCADOUR

    CPC分类号: C01G49/14 C01B17/96 C01G1/10

    摘要: L'invention se rapporte à un sulfate ferreux heptahydraté technique traité pour éliminer des traces d'eau intercristalline contenant de l'acide libre et ainsi le rendre susceptible d'écoulement libre. Le traitement consiste à le mélanger avec des phosphates calciques anhydres broyées finement, contenant au moins un atome de calcium pour un atome de phosphore. Au contact de l'acide sulfurique, il se forme à partir d'orthophosphates tri ou bicalciques, ou leur précurseur pyrophosphate et métaphosphate, des orthophosphates bi ou monocalci- ques, qui cristallisent avec de l'eau de substitution. A partir d'un sulfate ferreux brut, qui s'agglomère en masses, on obtient des produits parfaitement fluides contenant de 90 à 97 % de cristaux de sulfate de fer heptahydraté, et d'aspect très voisin du sulfate ferreux heptahydraté. On peut associer ce traitement à un traitement classique, tel que mélange avec un sulfate ferreux partiellement déshydraté et un neutralisant tel que carbonate de calcium. Par ailleurs le procédé est applicable à d'autres sulfates métalliques hydratés cristallisés, sulfate cuivrique, sulfates d'aluminium, de magnésium et de zinc.

    摘要翻译: 处理了硫酸亚铁七水合物,以除去痕量含有游离酸的晶间水,从而使其能够自由流动。 处理方法是将其与每一磷原子含有至少一个钙原子的精细研磨的无水磷酸钙混合。 与取代的水结晶的二价或一次性正磷酸盐与硫酸接触,由正磷酸三钙或二磷酸钙或其焦磷酸盐和偏磷酸盐前体形成。 从粗制的硫酸亚铁,其聚集成质量,获得含有90-97%的硫酸铁七水合物晶体的完全流体产物,并且在外观上与七水硫酸亚铁非常相似。 该处理可以与常规处理组合使用,例如与部分脱水的硫酸亚铁和中和剂如碳酸钙混合。 此外,该方法可以应用于其它结晶水合金属硫酸盐,硫酸铜和铝,硫酸镁和锌。