ore dressing

American  

noun

1. Metallurgy. the mechanical processes by which valuable minerals are separated from ore.

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ore dressing British  

noun

1. Also called: mineral dressing.   mineral processing.  the first stage in the extraction of a metal from an ore in which as much gangue as possible is removed and the ore is prepared for smelting, refining, etc

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Etymology

Origin of ore dressing

First recorded in 1860–65

Example Sentences

See Examples For:

ore dressing

The mechanical processes designed to separate the ore from its enclosing rock or other superfluous earthy matter called gangue became known as ore dressing and ore concentrating.

From Inventions in the Century by Doolittle, William Henry

The point at which such calculation departs from the "per-ton-of-ore" unto the per-unit-cost-of-metal basis, usually lies at the point in ore dressing where it is ready for the smelter.

From Principles of Mining Valuation, Organization and Administration by Hoover, Herbert

This whole subject of ore dressing is one of the most important questions connected with the future of mineral industry in America.

From The Galaxy Vol. XXIII?March, 1877.?No. 3 by Various

The question in ore dressing really is whether air can be made to work as well as water.

From The Galaxy, May, 1877 Vol. XXIII.—May, 1877.—No. 5. by Various

The writer has consulted a number of authorities on mining lines to ascertain just what sort of a position to give to the practice of ore dressing.

From The Business of Mining A brief non-technical exposition of the principles involved in the profitable operation of mines by Hoskin, Arthur J.