GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018
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Subject Code: 2172204
Subject Name: Mineral Processing
Date: 29/11/2018
Time: 10:30 AM TO 01:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) What is mineral processing? How is it useful to mining industry? | 03 |
| (b) Write the objectives of grinding. | 04 | |
| (c) Comparison of Jaw crusher and gyratory crusher | 07 | |
| Q.2 | (a) Explain: Kick’s law. | 03 |
| (b) Explain: sorting classifiers. | 04 | |
| (c) Write down the principal steps of mineral processing. | 07 | |
| OR | ||
| (a) Write in detail types of industrial screens. | 03 | |
| (b) Explain: mobile crushing unit. | 04 | |
| (c) Explain: black Jaw crusher. | 07 | |
| Q.3 | (a) Write the special method of grinding. | 03 |
| (b) Explain: sieve analysis | 04 | |
| (c) Advantage and disadvantage of jigs. | 07 | |
| OR | ||
| (a) Working principle and operation of shaking table. | 03 | |
| (b) Explain : Hydrocyclones | 04 | |
| (c) Explain: collectors and frothers | 07 | |
| Q.4 | (a) Explain the Ball mill. Classify the various zones created in ball mill during grinding. | 03 |
| (b) Explain the electrostatic separator. | 04 | |
| (c) Discuss in brief about froth flotation. | 07 | |
| OR | ||
| (a) Explain the mechanism-of magnetic separator | 03 | |
| (b) Write a note on sampling errors. | 04 | |
| (c) Explain: (i) Thickening (ii) Filtration | 07 | |
| Q.5 | (a) Write note on-processing of coal and explain via flow sheet of coal washing by heavy media separation. | 03 |
| (b) Explain: crushing, sizing and cleaning of coal. | 04 | |
| (c) Explain: Methods used in ore dressing | 07 | |
| OR | ||
| (a) Write note on processing of copper and explain via flow sheet of copper washing by heavy media separation. | 03 | |
| (b) | 04 | |
| (c) | 07 | |
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