ore roasting

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• roasting — roastingly, adv. /roh sting/, adj. 1. used or suitable to roast. 2. exceedingly hot; scorching: a roasting July. n. 3. a severely critical notice or review; pan. [1350 1400; ME (ger.); see ROAST, ING1, ING2] * * * In metallurgy, usually the first …   Universalium

• Roasting (metallurgy) — Roasting is a metallurgical process involving gas solids reactions at elevated temperatures. A common example is the process in which sulfide ores are converted to oxides, prior to smelting. Roasting differs from calcination, which merely… …   Wikipedia

• ore — /awr, ohr/, n. 1. a metal bearing mineral or rock, or a native metal, that can be mined at a profit. 2. a mineral or natural product serving as a source of some nonmetallic substance, as sulfur. [bef. 900; conflation of ME ore, OE ora ore,… …   Universalium

• öre — /ue rddeuh/, n., pl. öre. 1. a bronze coin of Norway, the 100th part of a krone. 2. a zinc or bronze coin of Denmark, the 100th part of a krone. 3. a bronze coin of Sweden, the 100th part of a krona. 4. a fractional currency of the Faeroe Islands …   Universalium

• Iron ore — Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, deep purple, to rusty red. The iron itself is usually found in the …   Wikipedia

• magnetic roasting — Metall. roasting of a nonmagnetic ore to render it magnetic so that it can be separated from gangue by means of a magnetic field. * * * …   Universalium

• magnetic roasting — Metall. roasting of a nonmagnetic ore to render it magnetic so that it can be separated from gangue by means of a magnetic field …   Useful english dictionary

• heap roasting — noun or heap roast : a process in which high sulfur ore piled in the open is roasted without fuel other than for ignition, the heat being furnished by the combustion of the sulfur in the ore …   Useful english dictionary

• Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd …   Wikipedia

• hand tool — any tool or implement designed for manual operation. * * * Introduction  any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …   Universalium

• roaster — n. 1 a person or thing that roasts. 2 a an oven or dish for roasting food in. b an ore roasting furnace. c a coffee roasting apparatus. 3 something fit for roasting, e.g. a fowl, a potato, etc …   Useful english dictionary