precalciner

plural precalciners

1. cement manufacturingA chamber in which rawmix is heated and partially calcined prior to entering the cement kiln.

   The dry process, using preheaters and precalciners, is both economically and environmentally preferable to the wet process because the energy consumption—200 joules per kilogram (J/kg)—is approximately half that for the wet process.

   1999, “Cement Manufacturing”, in Pollution Prevention and Abatement Handbook, 1998: Toward Cleaner Production, Washington, D.C.: The World Bank Group, →ISBN, page 275, column 1