ROTATING TUBE HEAT TREATMENT UNIT, IN PARTICULAR A ROTATING TUBULAR KILN, WITH INDIRECT HEAT FEED OR DISSIPATION

摘要

A rotating tube heat treatment installation, for example a rotating tubular kiln for the thermal separation of MgSO3, or a slag cooler for the separation of salts and aluminium comprises, as the main replacable component, a rotating tube (1) which is surrounded by a tubular jacket (2) and separated therefrom by a gap. The tubular jacket (2) is linked to the rotating tube (1) by means of a drive engagement system, and has drive (8) and possible bearing races and bandings (9) mounted externally. The connections (3, 4) for the heat exchange fluid are fitted at its ends, and thermal insulation, in particular light insulation, (7) is fitted internally. In this way the rotating tube, which is exposed to corrosion and thermal stresses, is simplified structurally and can be easily rplaced.