Based on analysis of problems existed in application of inertial vibrosieve,the new type variable frequency hydraulic straight-vibrating sieve is introduced.
Two-way combustion method with normal and reversal combustion is a new type of practical technology, with which clean combustion of bitumite-moulded coal can be realized.
The paper not only raised one new type making technology on high-speed and strong adhesive lactescent viscose, but also properly analyse and explain by theory.