vat leaching

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• Tank leaching — Tank leaching, also called vat leaching, is a hydrometallurgical method of extracting valuable material (usually metals) from ore. It involves placing ore, usually after size reduction and classification, in large tanks or vats containing a… …   Wikipedia

• Hydrometallurgy — is part of the field of extractive metallurgy involving the use of aqueous chemistry for the recovery of metals from ores, concentrates, and recycled or residual materials. Hydrometallurgy is typically divided into three general areas: *Leaching… …   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

• Fairbanks mining district — Infobox Settlement name = Fairbanks mining district official name = settlement type = Alaska Mining District nickname = motto = |pushpin pushpin label position =left pushpin map caption = pushpin mapsize = mapsize = map caption = mapsize1 = map… …   Wikipedia

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• Vulcanized fibre — The British patent for vulcanized fibre was obtained in 1859 by Thomas Taylor, an Englishman. [http://www.deldot.gov/archaeology/henderson road/pdf/chap 4 the bounty.pdf ; p 4 8.] This patent came after the introduction of celluloid… …   Wikipedia

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• Ghana — Ghanaian, Ghanian /gah nee euhn, gan ee /, n., adj. /gah neuh, gan euh/, n. 1. a republic in West Africa comprising the former colonies of the Gold Coast and Ashanti, the protectorate of the Northern Territories, and the U.N. trusteeship of… …   Universalium

• Copper extraction techniques — This article is about historical production methods. For modern methods, see Flash smelting. The Chino open pit copper mine in New Mexico …   Wikipedia

• environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium

• Bourbon Whiskey — Single Malt Whisky mit Nosing Glas Blended Scotch Whisky mit Tumbler Whisky (in …   Deutsch Wikipedia