Optimized conduction of heat in a plant for the thermal treatment of mineral substances

Abstract

A plant for thermal treatment of a mineral material comprises a preheater, a calciner and a kiln, wherein the plant comprises a gas inlet and a gas outlet and a material inlet and a material outlet, wherein the constituents are connected for transferral of a material stream from the material inlet to the material outlet via the preheater, the calciner and the kiln, wherein the constituents are connected for transferral of a gas stream from the gas inlet to the gas outlet via the kiln, the calciner and the preheater, wherein the preheater is a multi-stage preheater, wherein the calciner is connected to a heat exchange apparatus for transferral of the material stream exiting the calciner or the preheater is connected to a heat exchange apparatus for transferral of the material stream exiting a stage of the preheater, wherein the heat exchange apparatus is connected to the preheater for recycling of the material stream.

Dependencies are inferred from the claim text.