For this reason,the high efficient immersed wet dedusting technology was selected and used in Laisteel sintering plant to modify the quicklime hydration system for 2×265 m2 sinter machine.

Introduce the trend of the ferroalloy closed furnace and its wet dust collection process.

The advantages of the spray charging precipitator which compensated for the shortcomings of electrostatic precipitator and wet dust collector have been discussed.

A design and study on the general match parameters of the dust control system,the dust control technology and devices,and the high efficient wet dust collector were conducted.

The problems on the flue gas from wet dust catchers taking too much water and occurring too much temperature drop in operation are analyzed,and the disadvantageous influence of these problems on the correlative equipments and local atmospheric environment is discussed.

The paper analyzes the dust catching and ventilation with wall attaching chimneys and wet dust catchers based on inside and outside spraying of heading machines in the 6206 tunnels of the working face of Wangzhuang Coal Mine.

The function and problems of wet deduster in the production of Glauber′s salt and corresponding measures of technical modification are introduced.