Question:

Filter press is used in

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Filter press removes excess water from ceramic slip and converts it into a plastic filter cake.
  • Cement making
  • Glass making
  • Refractory making
  • Ceramic insulator making
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The Correct Option is D

Solution and Explanation

A filter press is used to remove water from slurry or slip. In ceramic processing, raw materials are often mixed with water to prepare a slip. This slip contains ceramic particles suspended in water. Before shaping, excess water must be removed from the slip. A filter press removes water under pressure and produces a plastic filter cake. This filter cake can then be used for forming ceramic bodies. Ceramic insulators are commonly produced from ceramic bodies that require proper plasticity and uniform composition. Filter press is therefore used in ceramic insulator making to prepare suitable plastic body from slip. Cement making and glass making do not commonly use filter press in the same ceramic forming sense. Therefore, filter press is used in: \[ \text{Ceramic insulator making}. \]
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