Calcium-silicon

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.

References in periodicals archive ?
2] system slags, among various calcium-silicon compounds the most negative change of the Gibbs energy occurs in formation of dicalcium silicate, i.
He and his colleagues first grow the calcium-silicon compound on silicon and then create a thin film of siloxene by replacing the calcium with hydroxyl groups.

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