Mechanical Operations
Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm)?

Baum jig washer
Froth floatation
Spiral separator
Trough washer

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Mechanical Operations
A filter press is

A batch filter
Having prohibitively high maintenance cost
Not suitable for wide range of materials under varying operating conditions of cake thickness and pressure
Not suitable, if the liquid is the main product

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