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1.发明授权
公开(公告)号：US4230545A
公开(公告)日：1980-10-28
申请号：US093514
申请日：1979-11-13
CPC分类号： C25C1/18
摘要： An electrolyte and a process for reducing lead peroxide formation when electrowinning lead from inorganic acid solutions are disclosed. In accordance with the invention, arsenic is added to an inorganic acid electrolyte containing lead, whereby oxygen is evolved at the anode while lead peroxide formation is reduced or eliminated during electrolysis.
摘要翻译： 公开了电解质和当从无机酸溶液中电解提取铅时减少过氧化铅形成的方法。 根据本发明，将砷添加到含铅的无机酸电解质中，由此在电解期间减少或消除过氧化铅形成，在阳极处放出氧。
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公开(公告)号：US4236978A
公开(公告)日：1980-12-02
申请号：US119743
申请日：1980-02-08
IPC分类号： C25D9/06 , C25C1/08 , C25C1/12 , C25C1/18 , C25C7/02 , C25D17/10 , C25B1/30 , C25B11/02 , C25B11/12 , C25B11/16
CPC分类号： C25C7/02
摘要： An improved insoluble anode for electrowinning is described which comprises a graphite substrate covered by a tight fitting sheet of a nonconductive electrolytically inert mesh material over which covered substrate is electrodeposited a layer of lead dioxide. The anode is formed by covering the graphite substrate with a sheet of the inert mesh material and thereafter electrodepositing lead dioxide thereon until a smooth layer of lead dioxide completely covers the mesh material. The anodes are electrolytically stable and are not susceptible to cracking.
摘要翻译： 描述了用于电解沉积的改进的不溶性阳极，其包括由非导电电解惰性网状材料的紧密贴片覆盖的石墨基底，在该基底上将被覆的基底电沉积二氧化铅层。 阳极通过用一片惰性网状材料覆盖石墨基板，然后在其上电沉积二氧化铅直到二氧化铅的平滑层完全覆盖网状材料而形成。 阳极电解稳定，不易开裂。
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公开(公告)号：US4229271A
公开(公告)日：1980-10-21
申请号：US42158
申请日：1979-05-24
CPC分类号： C25C1/18 , C22B13/045 , H01M10/54 , Y02P10/212 , Y02W30/84
摘要： A process for recovery of substantially all lead values in battery sludge as metallic lead is disclosed. By means of the process, lead is substantially completely and efficiently recovered as metallic lead in an environmentally acceptable manner. The process comprises (a) subjecting the sludge to low temperature reducing conditions; (b) converting lead sulfates to insoluble nonsulfur containing compounds while solubilizing all sulfur materials and thereafter separating the solid residue by solid-liquid separation techniques; (c) dissolving the solid products resulting from steps (a) and (b) in an acid selected from the group consisting of fluoboric and fluosilicic acid; (d) collecting the supernatant from step (c) by means of solid-liquid separation techniques; and (e) electrowinning the lead from the collected supernatant. The lead peroxide reduction of step (a) may be effected by low temperature reducing roasts or by contacting the lead peroxide with sulfur dioxide gas or sulfites.
摘要翻译： 公开了一种用于回收作为金属铅的电池污泥中基本上所有铅值的方法。 通过该方法，铅以环境可接受的方式基本上完全有效地作为金属铅回收。 该方法包括（a）使污泥经受低温降低条件; （b）将硫酸铅转化成不溶性含硫化合物，同时溶解所有硫物质，然后用固液分离技术分离固体残渣; （c）将由步骤（a）和（b）得到的固体产物溶解在选自氟硼酸和氟硅酸的酸中; （d）通过固液分离技术从步骤（c）中收集上清液; 和（e）从收集的上清液中电解提取铅。 步骤（a）的过氧化铅还原可以通过低温还原焙烧或使过氧化铅与二氧化硫气体或亚硫酸盐接触来实现。
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