The requirements of the polysilicon production process, silicon slag filtration needs to be carried out in a sealed state, otherwise it will seriously pollute the environment. Yinuo machinery combined with the characteristics of the polysilicon industry, custom research and development of filtration equipment, to create a fully sealed vacuum drum filter, the use of one-button start design, high degree of automation, good filtration effect, greatly improve the efficiency of polysilicon filtration, is now widely used in polysilicon filtration link, the equipment occupies about 50% of the national market share.

The filter is suitable for filtering suspension with moderate solid phase concentration and specific gravity and uniform particle size. The following conditions are suitable for the filter:

A, the thickness of the cake obtained in the filtration time of two minutes is greater than 5mm suspension.

B, solid phase gravity and particle size is moderate, resulting in solid phase settlement speed less than 12mm suspension.

C, the viscosity is small, no gum is not easy to plug the filter cloth, so that the filter cloth is easier to regenerate the suspension.

D, under the equivalent vacuum degree in the drum, the filtration temperature is less than the suspension gasification temperature.

E, A small amount of solid particles are allowed to remain in the filtrate.

F, large processing capacity, and require continuous operation occasions.