Reactor, practical kilns

Primarily.- Energy transfer from heat under the material in the rotary kiln. The material, which is ground down to have extended surface area, is permanently mixed, which mixing process is promoted by the blades inside the reactor body. The heated material is to be permanently replaced by cooler materials again and again. Therefore the thermal conductivity of the biomass material is of less importance and can be within a wider range. This is a very important and vital technical factor, particularly in relation to the biomass refuses, which are usually bad thermal conductors and in practice are of mixed physical and chemical character. 

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