Alumina recovery from copper dump leaching liquors using a supported liquid membrane

Sandoval, S. P. (Scot Philip), 1958-; Schultze, L. E. (Lawrence E.)

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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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Alumina recovery from copper dump leaching liquors using a supported liquid membrane

1989
By Sandoval, S. P. (Scot Philip), 1958- ; Schultze, L. E. (Lawrence E.)
Series: Mining Publications

[PDF-947.37 KB]

English

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Personal Author:

Sandoval, S. P. (Scot Philip), 1958- ; Schultze, L. E. (Lawrence E.)

Sandoval, S. P. (Scot Philip), 1958- ; Schultze, L. E. (Lawrence E.) Less -
Corporate Authors:

United States. Bureau of Mines.
Description:

"The U.S. Bureau of Mines investigated the separation of aluminum from copper dump leaching liquors using a supported liquid membrane. Aluminum was selectively transported through porous polypropylene impregnated with di (2-ethylhexyl) phosphoric acid in an aliphatic diluent. The effects of variables, such as solution composition, temperature, and extractant concentration, were measured with a three-level fractional factorial experimental design. Experimental results were used to derive equations for predicting transport rates for aluminum, iron, and copper. The major variables influencing aluminum transport were solution temperature, feed solution ph, aluminum concentration in the feed solution, and extractant concentration. Copper and iron transport rates were almost zero when aluminum transport rates were high. Measured aluminum transport rates under the best conditions of 55 deg c, ph 3.0, 16 G/l a13+, and 65 pct extractant solution confirmed the predicted value of 210 ug/(cm2.H). Transport rates for iron and copper were less than 5 ug/(cm2.H) under these conditions. Aluminum was recovered from the stripping solutions by sparging with gaseous hydrogen chloride to crystallize aluminum chloride hexahydrate, which was calcined to alumina. Sparging crystallization regenerated the stripping acid for recycle." - NIOSHTIC-2

NIOSHTIC no. 10007307
Subjects:

[+]

Aluminum -- Metallurgy. Copper Slag. Leaching.
Series:

Mining Publications
Subseries:

Report of Investigations
Document Type:

Text
Genre:

Report
CIO:

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

14 numbered pages
NIOSHTIC Number:

10007307
Resource Number:

RI 9264
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

[+]

urn:sha-512:e4308a08efc8107030461ef33f3b1306733013e21606b3ce5c535f82c9a6d2c8534d95d180cbf91b533e0700d54fa7f72e7216e4e7385c1e5239fc9055eb8f45
Download URL:

https://stacks.cdc.gov/view/cdc/10303/cdc_10303_DS1.pdf
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Alumina recovery from copper dump leaching liquors using a supported liquid membrane

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