An electrorefining or electrowinning method using high current densities and electrolyte flow rates is described. The current densities are approximately 60-400 a/ft2 and the flow rates are 75 ft/min, preferably 150-400 ft/min. This method was used for the refining of blister copper in a bath containing cuso4 and h2so4. The operating temperature was approximately 55 deg c; the c.D. 60- 300 A/ft2; the flowrate 285-400 ft/min; the deposit thickness 194- 502 mils; and the deposition time 16-188 h. The deposits were smooth, of high purity, and thick even at the high current densities used.
U.S. Pat. 4,053,377; Oct. 11, 1977; Chem. Abstr. 85:150,989Y
We take your privacy seriously. You can review and change the way we collect information below.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.
Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.
Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.