Calcining
system for the
thermal treatment of a substance (12), comprising at least one conveying device (14) with a main extension axis (H); which have at least one support facility (14) - at least one heat treatment volume (18) heated by a heating device (16) during the heat treatment with a
heating temperature (T_H) and a cooling volume (20) arranged below the heat treatment volume (18) with a
cooling temperature (T_K), wherein during the heat treatment the
heating temperature (T_H) is greater than the
cooling temperature (T_K); - a receiving device (22) designed to receive the substance (12) and to convey it, at least indirectly, into the heat treatment volume (18); - a dispensing device (24) which is arranged along the main extension axis (H) away from the receiving device (22) and is designed to dispense the substance (12) from the conveying device (14) after the
thermal treatment; - an endless belt device (26) with an upper section (28) and a lower section (30); wherein the upper section (28) is movable along the main extension axis (H) in a conveying direction (F) from a first section transfer device (32.1) to a second section transfer device (32.2) and wherein the upper section (28) is configured to convey the substance (12) received by the receiving device (22) and conveyed onto the upper section (28) for
thermal treatment in the thermal treatment volume (18); wherein the lower section (30) is movable in the cooling volume (20) in a return direction (R) opposite to the conveying direction (F) from the second section transition device (32.2) to the first section transition device (32.1) in the cooling volume (20) in a manner corresponding to the upper section (28); - a housing
system (34, 36, 38.1, 38.2, 40.1, 40.2) comprising an upper housing section (34), a lower housing section (36), at least two side housing sections (38.1, 38.2) and at least two end housing sections (40); wherein the calcining
system (10) has at least two or more successive conveying devices (14) which are arranged in a
cascade form as a substance mixing system.