Download GTU BE/B.Tech 2019 Winter 3rd Sem New 2132103 Mineral Processing Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 2132103 Mineral Processing Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 2132103 Date: 5/12/2019

Subject Name: Mineral Processing
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

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
Q.3 (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
Q.4 (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
Q.5 (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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