| 摘要 |
<p>1504360 Rotatable cathode cell IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 20 Dec 1976 [23 Dec 1975] 52593/75 Heading C7B An electrolytic cell comprises a cylindrical cathode drum 2 around part of the periphery of which is a melded fibre belt 3 held against the drum's surface by springs 4, 5. Cu scrap 6 acting as a consumable anode is poured into the casing 1 and the acidic CuSO 4 added to cover the scrap. A Cu-cored Ti rod 8 acts as a current lead-in. In operation, Cu ions pass through 3 and deposit on cathode surface 2 forming a foil at point 13 which is subsequently stripped off at 14. The consumable anode may be in particulate form and be continuously replenished during operation and may be an intermetallic compound e.g. of Ti and Cu or Ti and Fe. One or more of the metals of At. No. 23-29 may be incorporated in the anode material to inhibit passivation. The cathode may also be of stainless steel, Ti, Zr, Hf, Nb or Ta, or an alloy based thereon. The belt may be of a melded fibre structure (i.e. non-woven web of fibres formed from bicomponent fibres) of a plastic material e.g. PVC, polyethylene, polypropylene or acidresistant polyester.</p> |
