GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
Subject Name: Mineral Processing
Time: 02:30 PM TO 05:00 PM Total Marks: 70
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
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Subject Code: 2132103 Date: 5/12/2019Subject Name: Mineral Processing
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| MARKS | ||
| Q.1 | (a) Discuss various sources of metals. | 03 |
| (b) Draw basic flow diagram of mineral processing | 04 | |
| (c) Explain black Jaw Crusher With neat Diagram. | 07 | |
| Q.2 | (a) Define Ore, Mineral and Concentrate. | 03 |
| (b) Explain locking and unlocking of Minerals and Gangue. | 04 | |
| (c) List out ores/minerals of metals like Al, Fe, Cu, Mg, Pb, Sn and Zn with their chemical composition. | 07 | |
| OR | ||
| (c) Define mesh number and explain in brief about sieve analysis | 07 | |
| Q.3 | (a) Explain the term liberation and its importance in mineral processing. | 03 |
| (b) What are Physical and chemical characteristics of Iron and aluminum ores. | 04 | |
| (c) Discuss Jigging Operation with a neat diagram. | 07 | |
| OR | ||
| (a) Give detailed classification of screening. | 03 | |
| (b) Discuss different grinding media. | 04 | |
| (c) Explain motion of charge in Tumbling mill and derive the equation of critical speed. | 07 | |
| Q.4 | (a) What is angle of nip? For roll crusher derive an expression relating angle of nip. | 03 |
| (b) Describe the working principle of wilfly table with suitable diagram. | 04 | |
| (c) Short notes on Heavy media separation. | 07 | |
| OR | ||
| (a) What do you understand by ‘open circuit’ and ‘closed circuit’ grinding? | 03 | |
| (b) Explain why floatation is used for fine particles only. Draw a flotation circuit consisting of rougher cells, cleaner cells and scavenger cells for sulphide ores. | 04 | |
| (c) Short note Froth Floatation. | 07 | |
| Q.5 | (a) Draw Simplified beneficiation Flow Sheets of Iron ore. | 03 |
| (b) Draw Simplified beneficiation Flow Sheets of Bituminous coal. | 04 | |
| (c) Short note on magnetic separator. | 07 | |
| OR | ||
| (a) Explain briefly on Sedimentation | 03 | |
| (b) Draw Simplified beneficiation Flow Sheets of copper ore. | 04 | |
| (c) Explain in brief about electrostatic separation. | 07 |
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