Recovery of mercury from concentrates by cupric chloride leaching and aqueous electrolysis

Murphy, J. E. (Jim E.); Henry, H. G. (Helen G.); Eisele, J. A. (Judith A.)

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CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners. As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.

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Recovery of mercury from concentrates by cupric chloride leaching and aqueous electrolysis

1987
By Murphy, J. E. (Jim E.) ; Henry, H. G. (Helen G.) ; Eisele, J. A. (Judith A.)
Series: Mining Publications

[PDF-680.49 KB]

English

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Personal Author:

Murphy, J. E. (Jim E.) ; Henry, H. G. (Helen G.) ; Eisele, J. A. (Judith A.)

Murphy, J. E. (Jim E.) ; Henry, H. G. (Helen G.) ; Eisele, J. A. (Judith A.) Less -
Corporate Authors:

United States. Bureau of Mines.
Description:

"The Bureau of Mines developed a hydrometallurgical method for recovering mercury metal from mercury sulfide concentrates. Sulfide flotation concentrate from the McDermitt Mine was leached in a cupric chloride solution at 80 degrees c. The redox potential of the solution was maintained at 850 mv during leaching by chlorine sparging. Mercury extractions exceeded 99 pct in 3 h of leaching. After leaching, the ph of the solution was increased from 1 to 4.5 To precipitate copper as atacamite. The pregnant solution, typically containing 100 g/l hg, was sent to electrolysis to produce high-purity mercury metal and chlorine for recycle. In a 200-a electrolytic cell operated for 24 h, current efficiency was 99 pct, and the energy requirement was 0.9 Kw.H/lb of mercury produced. Mercury removal from the waste stream was also investigated. Iron or zinc cementation, sulfide precipitation with h2s, and activated carbon adsorption all decreased the mercury concentration from 10 g/l to 0.01 Mg/l, which is less than the Environmental Protection Agency limit on wastewater or 0.02 Mg/l." - NIOSHTIC-2

NIOSH no. 10006076
Subjects:

[+]

Electrolysis. Leaching. Mercury -- Metallurgy.
Series:

Mining Publications
Subseries:

Report of Investigations
Document Type:

Text
Genre:

Report
CIO:

National Institute for Occupational Safety and Health (NIOSH)
Pages in Document:

9 numbered pages
NIOSHTIC Number:

10006076
Resource Number:

RI 9140
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

[+]

urn:sha-512:39fb521b47e30b9d5f888cfd9ac77941aea3ed0dc4907ec221e0784f025779a172244520d6731d134ab9c0709c48d51c3ff026b4811ea40f639c6444e9352212
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https://stacks.cdc.gov/view/cdc/10664/cdc_10664_DS1.pdf
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Recovery of mercury from concentrates by cupric chloride leaching and aqueous electrolysis

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