lead matte smelting

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• smelting — Process by which a metal is obtained from its ore, either as the element or as a simple compound, usually by heating beyond the melting point, ordinarily in the presence of reducing agents such as coke or oxidizing agents such as air (see… …   Universalium

• matte — matte1 [mat] n. [Fr < dial. mate, a lump, prob. ult. < L matta, MAT1] an impure mixture of sulfides that is produced in smelting the sulfide ores of copper, nickel, lead, etc. matte2 [mat] n. [var. of MAT2] a dull surface or finish, often… …   English World dictionary

• Smelting — For other uses, see Smelt (disambiguation). Electric phosphate smelting furnace in a TVA chemical plant (1942) Smelting is a form of extractive metallurgy; its main use is to produce a metal from its ore. This includes iron extraction from …   Wikipedia

• matte — matte1 /mat/, adj., n., v., matted, matting. adj. 1. having a dull or lusterless surface: matte paint; a matte complexion; a photograph with a matte finish. n. 2. a dull or dead surface, often slightly roughened, as on metals, paint, paper, or… …   Universalium

• lead processing — Introduction       preparation of the ore for use in various products.       Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low… …   Universalium

• matte — I. or matt variant of mat III 1 II. adjective also mat or matt Etymology: French mat, from Old French, faded, defeated Date: circa 1648 lacking or deprived of luster or gloss: as a. having a usually smooth even surface free from shine or… …   New Collegiate Dictionary

• 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

• 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

• 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

• Slag — is the by product of smelting ore to purify metals. They can be considered to be a mixture of metal oxides; however, they can contain metal sulfides (see also matte) and metal atoms in the elemental form. While slags are generally used as a waste …   Wikipedia

• 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