Fines

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fines

[fīnz]
(materials)
Particles smaller than average in a mixture of particles varying in size.
Fine material which passes through a standard screen on which coarser fragments are retained.
(metallurgy)
That portion of a metal powder consisting of particles smaller than a specified size.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Fines

 

(in Russian, efel’), fine-grained material, usually smaller than 12–16 mm, which is separated by washing and screening sand from placer deposits of gold, platinum, diamonds, tin, tungsten, titanium, and other minerals. Fines usually have a fairly high content of valuable components and are concentrated by gravity techniques—in sluices, concentrating tables, settling vats, heavy media, and screw-type separators; cyaniding and amalgamation are also used for gold-bearing fines.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

fines

1. In plastering, small aggregate which passes through a 74-µm (No. 200) sieve.
2. Soil which passes through a 75-µm (No. 200) sieve.
3. A by-product of the processing of rock; varies in particle size from powder or dust to silt or sand.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.