GTU BE 3rd Semester 132103 Mineral Processing Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?III (OLD) – EXAMINATION ? SUMMER 2018
Subject Code: 132103 Date: 21/05/2018
Subject Name: Mineral Processing
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) List different types of crushers. Draw a simplified diagram of Blake Jaw
Crusher showing different parts.
07
(b) What is Grinding? Classify the various zones created in ball mill during grinding
operation.
07

Q.2 (a) List out ores and Minerals for metal like Al, Fe, Cu, Zn, Pb, Zn, Mg with their
chemical composition
07
(b) What are merits of mineral processing .Draw a simplified flow sheet for the various
processes involved in ore processing
07
OR
(b) Define mesh number. Mention the importance of sieve analysis
07

Q.3 (a) What is screening? Classify different types of industrial screening. 07
(b) Differentiate between Crushing and Grinding.
07
OR
Q.3 (a) What is Jigging? Explain its principles with neat diagram.
07
(b)
Explain the working process of mechanical classifier with a schematic
diagram.
07

Q.4 (a) Discuss magnetic separator with neat diagram in brief.
07
(b) What is free settling ratio in classification? Derive the equation for it as per
Newton?s law.
07
OR
Q.4 (a) What is froth flotation? Explain principle of Flotation cell.
07
(b) Explain Sedimentation and Thickening
07

Q.5 (a) What are the purpose of collectors, frothers, activators and depressants in
flotation process?
07
(b) Explain in brief ?Dense Media Separation?. 07
OR
Q.5 (a) List out factors affecting the comminution operation. Also discuss the factors
Affecting the operation of grinding mills in brief.
07
(b) Explain briefly on electrostatic separator.
07
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