Abstract:

The coal cake of traditional stamping operation has been separated to seven layers and make strapezoid bulk density distribution of coal cake. The operation can be adjusted according to stamp work and coal filling quantity of each layer. The bulk density and stamp work of each layer are in descending order from the bottom to the top layer, and coal layers are overlapped. The stamp time of each oven become shorter to 420 seconds and 20% work capacity higher. Coal cake collapse rate is decreased from 10%~20% to 0 and charging coal moisture is decreased from 14% to 12%. The shear resistance strength and high thermal efficiency have been improved.