| 摘要 |
<p>A novel, high-temperature heating, axially rotatable heating drum is designed to be mobile on wheels and lighter than before. Thermal economy in the apparatus is better than in the past by virtue of a mirror-like inner drum surface made of nickel-chromium-steel. The drum wall reflects rather well radiation heat back to the heating space and conducts heat much better than the traditional firebrick lining. This enables cooling by the material to be heatedwhen the material is still cold. At the same time the material is pre-heated by conduction of heat without actual energy consumption. Due to reduced weight of the drum, the speed of rotation can be substantially increased. The combustion air can be used initially as a heat insulator. Heating temperatures can be raised by virtue of the drum being refractory. As a cooling medium can also be used water, combustion air, or some other readily available cooling agent. The heated product can be separated by means of a vortex in a variety of fractions on the basis of a grain size or density. The swelled end product can be used for example for making a ceramic road or foundations. The ceramic expanded product can be useful heat insulation for a wide range of applications. Being lighter than water, the ceramic product can be designed as a floating bridge or as a floating foundation for a house. The heatingtemperature higher than before enables disposal of wastes and toxins and practical reuse of wastes. The rustproof, non-corrodible drum can be used to solve many chemical problems at different fields of technique.</p> |
