Unit 1

Properties and handling of particulate solids- characteristics of solid particles, standard screen series, mixed particle size and screen analysis; Screening: Theory of screening, Effectiveness and Capacity of screens, Screening equipment: stationary screens and grizzlies, gyrating screens, vibrating screens and other industrial screens like trammels, etc. Transportation and storage of solids: bins, hoppers and silos, flow out of bins; conveyor selection, different types of conveyers and their performance characteristics.

Comminution of solids (Size Reduction): Factors affecting comminution, comminution laws: Kick’s law, Rittinger’s law and Bond’s law and their limitations. Crushing efficiency & power consumption, Size reduction equipments: Primary crusher – Jaw crusher, Gyratory crusher, Secondary crusher – Roll crusher (both smooth roll & toothed roll) its selection and capacity, Grinder – Construction and operation of Hammermill, Ball mill, Rod mill, Attrition mill, Agitated mill and their materials suitability, Ultra-fine grinder – Fluid energy mill, Cutting machines: knife cutters, Close circuit and Open circuit operation.

Unit 2

Separation of solids: gravity settling, sedimentation, thickening, elutriation, double cone classifier, rake classifier, bowl classifier.Centrifugal separation – continuous centrifuges, bowl classifier, super centrifuges, design of basket centrifuges; Industrial dust removing equipment – cyclones and hydro cyclones, with special reference to electrostatic and magnetic separators; Heavy media separations, floatation.

Mixing and Agitation: Mixing of liquids (with or without solids), mixing of liquids (with solids), mixing of liquids (with solids), mixing of powders, selection of suitable mixers, power requirement for mixing.

Unit 3

1. W. L. McCabe, J. C. Smith, and P. Harriot, “Unit Operations in Chemical Engineering, 6^th Edition, McGraw Hill, 2001.
2. W. L. Badger and J. T. Banchero, “Introduction to Chemical Engineering“, Tata McGraw Hill, 1997
3. A. S. Foust, L. A. Wenzel, C. W. Clump, L. Naus, and L. B. Anderson, “Principles of Unit Operations“, 2^nd Edition, John Wiley & Sons, 1994.