- refractory ores
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огнеупорная руда
English-Russian dictionary of geology. 2011.
refractory ores
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Refractory metals — are a class of metals that are extraordinarily resistant to heat and wear. Refractory metals are said to be poorly resistant to oxidation and corrosion. [UFL EMA 6625: Advanced Metal Processing, Summer 2008, Lecture 09] These properties make them … Wikipedia
refractory — [ri frak′tər ē] adj. [altered < obs. refractary < L refractarius < refractus: see REFRACT] 1. hard to manage; stubborn; obstinate: said of a person or animal 2. resistant to heat; hard to melt or work: said of ores or metals 3. a) not… … English World dictionary
refractory — refractorily, adv. refractoriness, n. /ri frak teuh ree/, adj., n., pl. refractories. adj. 1. hard or impossible to manage; stubbornly disobedient: a refractory child. 2. resisting ordinary methods of treatment. 3. difficult to fuse, reduce, or… … Universalium
Gold extraction — or recovery from its ores may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. [cite web url=http://geology.com/publications/getting gold/gold… … Wikipedia
gold processing — Introduction preparation of the ore for use in various products. For thousands of years the word gold has connoted something of beauty or value. These images are derived from two properties of gold, its colour and its chemical stability.… … Universalium
bioleaching — The recovery of metals from their ores, using the action of micro organisms, rather than chemical or physical treatment. For example, Thiobacillus ferroxidans has been used to extract gold from refractory ores. See: biorecovery … Glossary of Biotechnology
John McGarvie Smith — Infobox Scientist name = PAGENAME box width = image size =150px caption = PAGENAME birth date = 1844 birth place = Sydney death date = 1918 death place = residence = |citizenship = nationality = Australia ethnicity = field = metallurgy… … Wikipedia
SMITH, John McGarvie (1844-1918) — metallurgist and bacteriologist was born at Sydney in 1844. At 13 years of age he had to make his own living, and having learned the trade of watchmaker and jeweller, opened a business for himself at Sydney in 1866. He carried on this business… … Dictionary of Australian Biography
metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… … Universalium
steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying … Universalium
chromium processing — Introduction preparation of the ore for use in various products. Chromium (Cr) is a brilliant, hard, refractory metal that melts at 1,857° C (3,375° F) and boils at 2,672° C (4,842° F). In the pure state, it is resistant to ordinary… … Universalium
