... work continuously 4,the tube of fume extraction will recycle the gas flow which come from the inner ... stove, and it will save 70% energy consumption and recycle 95% smokingENVIRONMENT:1,Totally No pollution ( there are ... frog and the gas flow will be recycle from the smoke recycle device and use for heating the kiln again2 ... 480 °CP.S.: 1. three inner stoves to recycle 2. 0.8-1MT/stove inside volume:1.8 ...