fire refining

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• Refining (metallurgy) — Refining (as in non metallurgical uses) consists of purifying an impure material, in this case a metal. It is to be distinguished from other processes such as smelting and calcining in that those two involve a chemical change to the raw material …   Wikipedia

• Fire breathing — is the act of creating a large flame by spraying, with one s breath, a flammable liquid upon an open flame. The flame is usually held an arm s length away and the spray should be both powerful and misty. This art is said to have originated in… …   Wikipedia

• Refining — Refine Re*fine (r?*f?n ), v. t. [imp. & p. p. {Refined} ( find ); p. pr. & vb. n. {Refining}.] [Pref. re + fine to make fine: cf. F. raffiner.] 1. To reduce to a fine, unmixed, or pure state; to free from impurities; to free from dross or alloy;… …   The Collaborative International Dictionary of English

• petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

• 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

• tin processing — Introduction       preparation of the ore for use in various products.       Tin (Sn) is a relatively soft and ductile metal with a silvery white colour. It has a density of 7.29 grams per cubic centimetre, a low melting point of 231.88° C… …   Universalium

• platinum group — ▪ chemical element group Introduction       six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and …   Universalium

• 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

• copper processing — Introduction  use of smelting or leaching, usually followed by electrolytic refining or recovery, to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of copper and of its… …   Universalium

• Pyrometallurgy — is a branch of extractive metallurgy. It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals.… …   Wikipedia

• combustion — Synonyms and related words: backfire, balefire, beacon, beacon fire, blaze, blazing, blistering, bonfire, branding, burning, burning ghat, calcination, campfire, carbonization, cauterization, cautery, cheerful fire, cineration, concremation,… …   Moby Thesaurus