In the procedure of control ling system for ash pneumatic removing device in power plant, the overall function chart is acquired and the PLC control program is also provided.

The closed cooling system for the treated water provided with a air cooler can improve coo-ling effect. It becomes an important measure to increase the blast furnace campaign.

This paper reports a deposit expert system, WOLTIN named, on WOLfram and TIN deposits related to granites in the Nan Ling region in the South of China.