A process is disclosed for obtaining colloid-forming metal particles from an aqueous mine waste solution containing that metal in ionic form. In accordance with this process, an aqueous mine waste solution containing that metal in ionic form is provided having a pH value of about 4. 0 to about 6. 5. The solution is electrified with direct current a about 1. 2 to about 2. 0 volts to reduce the desired metal ions to colloidal metal particles. A slurry of cellulose particles is agitatingly added to the colloid composition followed by a flocculant to form a solid phase cellulosic floc containing the colloid. The solid and liquid phases are separated, and the solid phase is dried, fluxed and heated to a temperature sufficient to melt the flux and colloid and form larger metal particles that can then be recovered. The colloid-forming metal is preferably gold.
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a is hard enough, its even harder to deal with reactions from others.Youre immediately labeled, says 59-year-old Keith Barrett, who lives with young onset Alzheimers. Keith is the co-founder and director of a small Ottawa-based organization that provides supports to individuals with a variety
Date: Jan 21, 2019
Category: Headlines
Source: Google
National dementia strategy should include input from patients, caregivers: report
For Keith Barrett, 59, it took more than two years before he was diagnosed with early-onset dementia after the Ottawa businessman began having increasingly unsettling memory problems that left him frustrated and angry.