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Mechanical Operations are those unit operations of Chemical Engineering, which involve mechanical forces, either small or large. These mainly deal with the handling and processing of the solids and the solids present in other phases.Generally, solids are more difficult to handle and process than liquids and gases, because gases and liquids do not have their own shape and size; rather they take the shape of the container. In contrast, solids have a definite shape and size, due to which their handling becomes difficult. For example, liquids and gases can easily be transported through pipes from one place to another, but for solids we have to decide the means according to their shape and size.
Mechanical Operations are broadly classified in the following ways:
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(i) Particulate Solids Characterisation of solids, Handling of solids (Transportation, Feeding, Weighing, and Storage), Size reduction, and Size separation
(ii) Particle Dynamics Sedimentation, Filtration, Elutriation, Classification
(iii) Mixing Mixing of solids with solids, Mixing of cohesive solids and Mixing of liquids
Topics covered by this book
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- Properties and Storage of Solids
- Size Reduction of Solids
- Separation of Solids: Introduction
- Solid–Solid Separation
- Solid-Liquid Separation
- Gas-Solid Separation
- Transportation of Solids
- Mixing of Solids
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