THERMAL REDUCTION PROCESS FOR PRODUCTION OF CALCIUM USING ALUMINUM AS A REDUCTANT

摘要

Calcium is produced by a thermal reduction process in a reaction-condensation system having a reaction zone and a condensation zone. According to the process, a reducing agent is contacted or reacted in the reaction zone with at least a partially molten slag to produce calcium vapor. The calcium vapor is transported from the reaction zone to the condensation zone and condensed therein.