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The Nutsche, tipping pan and table filters are intended only for solids recovery from liquid suspensions. The rotary drum filter is mainly used for that purpose, but has some applications in clarification as well as solids recovery.

Rotary drum filters may be vacuum driven (rotary drum vacuum filters) or pressurized (pressure drum filters). The former are produced in a large variety of types and sizes, capable of meeting a very wide range of moderate and slow settling liquidsolid separation requirements in the process industries, foodstuffs production, mineral engineering, effluent treatment plant, and right down to laboratory sizes. Such filters have the advantages of continuous operation with high cake-washing efficiency and low specific power requirements. They can be used with a wide variety of filter cloths and with various discharge methods for filter cakes of differing consistencies.

The rotary pressure drum filter is a very much more complicated filter than the vacuum version, and so is more expensive and less widely used.

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