1. The barrel is designed as rotary structure to set full-scale stirring blade inside. The barrel is designed as big in the end and small in the middle to discharge the material easily;
2. The barrel shaft is inclined design to mix the materials in two sides and eliminate the dead angle. The rotary speed of barrel is 25 turns/min.
3. The full-scale stirring blades , whose moving space includes the whole barrel space, are set inside the barrel. The blades make impendent rotary movement, rotary speed 50 turns/min.