Calcium-silicon

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Calcium-silicon

 

a ferroalloy containing 23–32 percent Ca and 2–4 percent Fe (the remainder is Si); it is smelted by carbon reduction of lime and quartzite in ore heat-treating furnaces. Ferrocalcium-silicon, containing 10–20 percent Ca and up to 25 percent Fe (the calcium costs are lower than that in calcium-silicon), is obtained by adding iron chips to the charge using the carbon-reduction or silicothermic process. Both alloys are used as deoxidizers in the smelting of steel.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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