Ferroalloy

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ferroalloy

[¦fe·rō′al‚ȯi]
(metallurgy)
Any alloy containing iron, usually in major amount. Also known as ferrous alloy.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ferroalloy

 

any of the intermediate metallurgical products that are alloys of iron with silicon, manganese, chromium, and other elements and that are used in the smelting of steel (for deoxidizing and alloying the molten metal, binding harmful impurities, imparting the desired structure and properties to the metal), as well as in the manufacture of other ferroalloys (converted ferroalloys). By convention, the ferroalloy group also includes certain alloys, such as silicomanganese and calcium-silicon, which contain iron only as an impurity and certain metals and nonmetals in technically pure form (metallic manganese, metallic chromium, crystalline silicon). Ferroalloys containing several components are described as complex.

With iron present, the reduction of the oxides of the critical element of the ferroalloy (Mn, Cr) by carbon occurs at a lower temperature, more rapidly, more completely, and with less expenditure of energy. The melting range of ferroalloys, with rare exceptions, is lower than that of the pure metal; this difference facilitates the ferroalloy’s dissolution in the molten steel and cuts down the losses of the critical element caused by oxidation. The cost of an element in a ferroalloy is lower than in the technically pure form. The content of ferroalloy components that is considered standard varies with the chemical composition of the raw materials and the conditions under which the ferroalloys are smelted and introduced into the molten steel.

V. A. BOGOLIUBOV

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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The fully integrated producer of ferro alloys stradling the value chain from mining to smelting said its profit of Rs 4.6 crore in Q4 of FY 18 turned into a loss of Rs 73.8 crore in Q4 of FY 19.
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GMR Ferro Alloys, based in Tekkali Mandal in IndiaCOs Andhra Pradesh state, produces about 27,500 tonnes of ferro chromium annually, Cronimet said.
A private Indian company, Ferro Alloys, started construction of the ferroalloy plant in the town of Tashkumyr, Jalalabad oblast.
The plant, located in Mo i Rana, Norway, has a production capacity of 110,000 tons per year of ferro alloys, and it will produce ferro silicon manganese and ferro manganese high carbon alloys, CVRD said.
David Matter, 75, retired corporate vice president and director of Ohio Ferro Alloys Corp.
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By the end of September, the other furnaces will be put to use too and production will climb up to 6 tons of ferro-silicon a month," said Vasko Skenderovski from Jugohrom Ferro Alloys.