Distribution and analyses of gold and silver in mechanically processed mixed electronic scrap

Dunning, B. W.; Ambrose, F. (Fred); Makar, H. V. (Harry V.)

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Distribution and analyses of gold and silver in mechanically processed mixed electronic scrap

1983
By Dunning, B. W. ; Ambrose, F. (Fred) ; Makar, H. V. (Harry V.)
Series: Report of investigations (United States. Bureau of Mines) ; 8788

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Personal Author:

Dunning, B. W. ; Ambrose, F. (Fred) ; Makar, H. V. (Harry V.)

Dunning, B. W. ; Ambrose, F. (Fred) ; Makar, H. V. (Harry V.) Less -
Corporate Authors:

United States. Bureau of Mines.
Description:

"The Bureau of Mines investigated the concentration and distribution of precious metals in the various fractions produced from mechanical processing of obsolete military electronic scrap. Whole avionic units, printed circuit cards, and electrical connectors were processed and analyzed. Materials recovered included baghouse lights, wire bundles, magnetics, and metal concentrates from eddy- current and high-tension separation. Higher value fractions were processed by a commercial toll refiner for recovery of gold and silver. Lower value fractions were analyzed by the Bureau. Three fractions, the lights, wire bundles, and metallics from high-tension separation, contained most of the precious metals. Depending on the type of scrap feed, these fractions represented 34 to 60 pct of the original sample weight. Collectively, they represented 68 to 97 pct and 75 to 98 pct of the contained gold and silver, respectively." - NIOSHTIC-2

NIOSH no. 10002971
Subjects:

[+]

Electronics -- Materials -- Recycling. Gold -- Recycling. Silver -- Recycling.
Series:

Report of investigations (United States. Bureau of Mines) ; 8788
Document Type:

Report
Collection(s):

Stephen B. Thacker CDC Library collection
Main Document Checksum:

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urn:sha256:9395c948aa172d25aba2b51d1b15ad315b1cf216279537aa33eece205a57dd2b
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https://stacks.cdc.gov/view/cdc/10417/cdc_10417_DS1.pdf
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Distribution and analyses of gold and silver in mechanically processed mixed electronic scrap

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