公开(公告)号：US06616827B2

公开(公告)日：2003-09-09

申请号：US09838321

申请日：2001-04-20

申请人： Kazuyoshi Nabekura ,  Yutaka Hirasawa ,  Naotomi Takahashi

发明人： Kazuyoshi Nabekura ,  Yutaka Hirasawa ,  Naotomi Takahashi

IPC分类号： C25D2118

CPC分类号： B01D37/02

摘要： The present invention provides a filtration method of copper electrolyte that can remove minute electrolytic by-products and dirt and may improve filtration efficiency by improving a conventional filtration method, the so-called precoating method. In a filtration method of copper electrolyte for removing electrolytic by-products and dirt which affect copper electrolysis, by passing copper electrolyte through a filter element precoated with a filtering aid, in the present invention, a precoated layer of a filtering aid is formed on a filter element in advance. Activated carbon preliminary treatment solution containing powdery activated carbon is passed through the filter element formed with the precoated layer, and is also circulated until no powdery activated carbon leaks from an outlet of the filter element, thus forming a powdery activated carbon layer on the precoated layer. Subsequently, the copper electrolyte is passed through for filtration.

摘要翻译： 本发明提供了一种铜电解质的过滤方法，其可以通过改进所谓的预涂法的常规过滤方法来去除微小的电解副产物和污垢并且可以提高过滤效率。 在用于除去影响铜电解的电解副产物和污垢的铜电解质的过滤方法中，通过使铜电解质通过预过滤助剂的过滤元件通过，在本发明中，过滤助剂的预涂层形成在 过滤元件。 含有粉末状活性炭的活性炭预处理溶液通过由预涂层形成的过滤元件，并且循环，直到粉状活性炭从过滤元件的出口泄漏出来，从而在预涂层上形成粉状活性炭层 。 随后，使铜电解液通过以进行过滤。