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1. 发明申请

WO2014084746A1 METHOD OF OBTAINING ZINC SULPHATE SOLUTION FOR ELECTROWINNING OF ZINC FROM SELECTED WAELZ OXIDE OF HYDROMETALLURGICAL PROPERTIES 审中-公开
标题翻译：获得锌离子溶液的方法，用于从选择性氧化锆的水蒸汽特性中电镀锌
公开(公告)号：WO2014084746A1
公开(公告)日：2014-06-05
申请号：PCT/PL2013/000003
申请日：2013-01-08
申请人： ZAKŁADY GÓRNICZO-HUTNICZE "BOLESŁAW"S.A.
发明人： FATYGA, Mirosław , OCHAB, Bogusław , STENCEL, Leszek , TREPKA, Andrzej , PIECZONKA, Bogdan , ZIĘBA, Łukasz , NOWAK, Jerzy , CZEKAJ, Jerzy , JAKUBOWSKI, Jacek , WYCIŚLIK, Stanisław , SZARY, Andrzej
IPC分类号： C01G9/06
CPC分类号： C01G9/06 , C22B19/26 , C22B19/30 , C25C1/16 , Y02P10/234
摘要： The object of the invention is a method of obtaining zinc sulphate solution for electrolysis of zinc from selected Waelz oxide of hydrometaliurgical properties, applicable in the hydrometaliurgical process of electrolytic zinc manufacture. In the process according to the invention selected oxides of hydrometallurrgical properties from the Waelz plant are used, and the process of preparing zinc electrolyte for electrolytic zinc manufacture is carried out in three stages, wherein each of the stages is preceded by a different process of preparing process suspension. In the first stage the crude zinc oxide is treated with cold water to remove chlorine and alkali elements in a two-step counter-current operation of leaching soluble components carried out in a washing and thickening unit, wherefrom water containing alkali elements and chlorine is selectively transferred to CaCI 2 manufacture. In the second stage the crude zinc oxide processed in the first stage is further treated in an autoclave at a temperature of 120-130°C to remove fluorine by treatment with Na 2 CO 3 and/or Na 2 CO 3 solution, after which the suspension, preferably upon thickening, is subjected to phase separation by means of filtration and washing the filter cake on the filter. In the third stage the filter cake obtained in the second stage is dissolved in the recycled acid, after which the thickened suspension is separated in a thickening and phase separation process by means of filtration and washing the filter cake on the filter, and the solution after sedimentation constitutes a zinc electrolyte for electrolytic zinc manufacture.
摘要翻译：本发明的目的是获得适用于电解锌制造的水热处理工艺中的从选择的氧化镁冶金性能的电解锌的硫酸锌溶液的方法。在根据本发明的方法中，使用来自Waelz工厂的选择的氧化物的湿法冶金特性，并且制备用于电解锌制造的锌电解质的方法分三个阶段进行，其中每个阶段之前都有不同的制备方法过程暂停。在第一阶段，用冷水处理粗氧化锌，以便在洗涤和增稠装置中进行的浸出可溶性组分的两步逆流操作中以除去氯和碱元素，从而选择性地含有碱元素和氯的水转移到CaCI2制造。在第二阶段中，在高压釜中在120-130℃的温度下进一步处理在第一阶段中加工的粗氧化锌，以通过用Na 2 CO 3和/或Na 2 CO 3溶液处理除去氟，之后悬浮液优选在增稠后，通过过滤进行相分离，并将滤饼洗涤在过滤器上。在第三阶段中，将第二阶段得到的滤饼溶解在再循环的酸中，然后通过过滤分离增稠的悬浮液，并在过滤器上洗涤滤饼，然后将滤液洗涤后的溶液沉淀构成用于电解锌制造的锌电解质。

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