Mechanical Operations

Comprehensive overview of mechanical operations and their significance within the chemical process industry. Size Reduction: Methods of size reduction; Classification of equipment; Crushers; Grinders; Disintegrators for coarse, Intermediate and fine grinding; Laws of size reduction; Energy relationships in size reduction; power requirement; Work Index Size Enlargement: Principle of granulation; Briquetting; Palletization; Flocculation.

General characteristics of solids; Different techniques of size analysis; Shape factor; Surface area determination; Estimation of particle size; Screening methods and equipment; Screen efficiency; Ideal and actual screens. Standard screens industrial screening equipment - Gyratory screen, Vibrating screen, Sieve analysis, Sedimentation and elutriation methods.

Gravity settling; Sedimentation; Thickening; Elutriation; Double cone classifier; Rake classifier; Bowl classifier; Centrifugal separation; Continuous centrifuges; Design of basket centrifuges; Industrial dust removing equipment; Cyclones; Hydro cyclones; Electrostatic- Magnetic separators; Heavy media separations; Floatation; Jigging.

Theory of filtration, Batch and continuous filters, Filtration types of equipment; Rotary drum filter; Plate and frame filter; Leaf filter; Notch filter; Sand filter; Bag filter; Selection; Operation; Filter aids. Flow through filter cake and Filter media; Compressible and incompressible filter cakes; Design of filters and optimum cycle of operation. Fluidization: Fluidization characteristics, aggregative and particulate fluidization, voidage and minimum fluidization velocity, terminal velocity of particles; entrainment; pressure drop in fluidization.

Mixing of liquids (with or without solids); Mixing of powders; Ribbon blender; Screw blender; Double cone blender; High viscous mixer; Banbury mixer; Selection of suitable mixers; Power requirement for mixing Storage and conveying of solids: Bunkers; Silos; Bins; Hoppers; Transportation of solids in bulk; Conveyer selection; Types of conveyors; Belt Conveyor; Bucket conveyor; Screw conveyor; Pneumatic conveyor.