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公开(公告)号：EP1287872A1
公开(公告)日：2003-03-05
申请号：EP01921987.2
申请日：2001-04-23
发明人： NABEKURA, K., c/o MITSUI MINING & SMELTING CO.,LTD , HIRASAWA, Y., c/o MITSUI MINING & SMELTING CO.,LTD , TAKAHASHI, N., c/o MITSUI MINING & SMELTING CO.LTD
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.
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公开(公告)号：EP1287872B1
公开(公告)日：2004-06-02
申请号：EP01921987.2
申请日：2001-04-23
发明人： NABEKURA, K., c/o MITSUI MINING & SMELTING CO.,LTD , HIRASAWA, Y., c/o MITSUI MINING & SMELTING CO.,LTD , TAKAHASHI, N., c/o MITSUI MINING & SMELTING CO.LTD
CPC分类号： B01D37/02
摘要： A method for filtering a copper electrolyte solution wherein an electrolysis product and stains affecting adversely copper electrolysis are removed from the copper electrolyte solution by passing the solution through a filtration element pre-coated with a filtration aid, characterized in that a pre-coating layer of a filtration aid is first formed on the filtration element, an activated carbon pre-treating liquid containing a powdery activated carbon is circulatively passed through the filtration element until the leak of the powdery activated carbon from the outlet of the element stops, to thereby form a powdery activated carbon layer on the pre-coating layer, and the copper electrolyte solution is then passed through for filtration.
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