FILTRATION MACHINE- Batch and Semicontinuous Filters
In beneficiation plant , Continuous filters tend to be more widely used in the mineral and coal processing field, particularly where large tonnages are involved. This preference reflects the lower capacities of batch or semicontinuous units and the increased labor requirements, both of which result in higher operating costs. However, at low-tonnage plants and under special conditions, these filters can have distinct advantages. Also, where pressure drops must be used that are higher than those obtained by continuous vacuum filters (because of the low cake permeability), the pressure filter may be applicable. For instance, tailings may be filtered to recover water or to dewater them to a high enough solids concentration to allow land disposal. The mineral and coal processing industry use batch and semicontinuous filters of four types: plate and frame filters, recessed plate filters, vertical disk pressure filters with or without sluice discharge, and automatic discharge plate and frame...