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Coal processing Technology -II
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MCT-407: COAL PROCESSING TECHNOLOGY---II Marks Theory 100, Practical -- Credit Hours Theory 3, Practical -- 1. Sorting Methods i. Hand sorting process for cleaning coal ii. Mechanical sorting and sorting machines 2. Coal Cleaning By Vertical Water Currents i. Jigs (various types: pulsating, diaphragm type, moveable sieve jig, Baum jig, etc.) ii. Mechanism of hindered settling and differential acceleration of particles (stratification mechanism in jigging) iii. Jigging methods and factors affecting the performance of jig (operating variables) iv. Spiral concentration of coals (Humphrey spiral, construction and working) 3. Coal Cleaning By Flowing Film Concentration i. Shaking tables (Wilfley and Deister table for coals) ii. Factors affecting the performance of table (operating variables) iii. Construction of table, size, capacity, efficiency iv. Air tables and their performance for coals 4. Heavy Media Separation i. Types of heavy media (organic liquids, soluble inorganic salts, insoluble minerals, magnetic suspensions) ii. Lab. procedure for heavy-media separation of coal and drawing washability curves and interpretation of sink-float data iii. Heavy media separators (cone, bowl, drums, cyclones, whirlpool separators) iv. Industrial processes currently used in the industry v. Process flow sheets showing various unit operations involved in heavy media separation of coals vi. Comparison of heavy media separation with other cleaning methods 5. Floatation of Coal i. Coal floatability mechanism ii. Flotation variables iii. Physics and Chemistry of Froth Floatation process iv. Flotation reagents (collectors, frothers, modifiers, depressants) v. Flotation machines/ equipment (flotation cells for lab. tests, industrial flotation machines) vi. Column flotation for coal desulphurization vii. Flotation circuits (flow sheets) viii. Data collection and mass balancing (Metallurgical Balance Sheets) 6. Leaching of Coals i. Heap leaching (bacterial leaching) for desulphurization of coals ii. Lab. tests and pilot scale leaching tests iii. Operating parameters and leaching microbes 7. Thickening, Filtration and Drying i. Handling of fine coal slurries and flotation concentrates by ii. thickeners, filters (drum, disc), dryers (tray and tunnel dryers) 8. Safety aspects during coal processing |
| Credit hours/ Marks:- 3 |
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