This paper introduced the application of some new-style antifriction materials in the sintering production equipments,which increased the operating cycle of the sintering equipment and saved the spare parts and maintenance fee.

Practices of prolonging running period of lime kiln;

The research consist of three parts: The investigate of the chaos in the SHG, controlling chaos and synchronizing periodic states by period parameter modulation method in the SHG, controlling chaos and synchronizing periodic states by time-delay feedback me.

During these years,many technologies have been explored in terms of long-term operation,and a series of measures have been taken.