Solvent Extraction of Nickel, Cobalt and Copper from Laterite- ammoniacal Leach Liquors.
Authors
Rhoads SC; Nilsen DN; Siemens RE
Source
Proc Isec 77 Cim Spec 21:446-452
Link
NIOSHTIC No.
10009885
Abstract
The Bureau of Mines is investigating a method to recover nickel, cobalt, and copper from laterites containing less than 1.2 pct nickel by reduction roasting, leaching, solvent extraction, and electrowinning unit operations. The method includes three objectives: (1) production from low-grade domestic laterites of critical metals that are domestically in short supply, (2) lower processing energy requirements, and (3) solution recycling. Nickel and copper are coextracted with lix 64n from an ammoniacal-ammonium sulfate batch leach liquor containing 1.00 G/l nickel, 0.30 G/l copper, and 0.02 G/l zinc. Nickel and copper are then separated by selective stripping with spent nickel and copper electrolytes. Cobalt (III) in the nickel- and copper-barren raffinate is reduced to cobalt (II) with cobalt metal. General mills XI-51 extracts cobalt (II) from the treated raffinate. Extracted cobalt is stripped from the XI-51 with spent cobalt electrolyte.
Links with this icon indicate that you are leaving the CDC website.
The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
You will be subject to the destination website's privacy policy when you follow the link.
CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website.
For more information on CDC's web notification policies, see Website Disclaimers.
CDC.gov Privacy Settings
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.
Thank you for taking the time to confirm your preferences. If you need to go back and make any changes, you can always do so by going to our Privacy Policy page.