Download GTU B.Tech 2020 Winter 5th Sem 3152107 Non Ferrous Extractive Metallurgy Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 5th Sem 3152107 Non Ferrous Extractive Metallurgy Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?V (NEW) EXAMINATION ? WINTER 2020
Subject Code:3152107 Date:27/01/2021
Subject Name:Non Ferrous Extractive Metallurgy
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


Marks
Q.1
(a) What is Extractive Metallurgy? List out basic types of Extraction
03
processes.

(b) Explain fluidized bed roasting with its mechanism.
04

(c)
List out Ores/ Minerals with their chemical compositions of
07
metals Al, Cu, Pb, Ti, Sn Mg and Zn.



Q.2
(a) Explain Distillation with suitable example of metal.
03

(b) Differentiate between Pelletizing and Sintering.
04

(c) Compare merits and demerits of Pyro and Hydro metallurgy.
07




Q.3
(a) Differentiate between drying and Calcination.
03

(b) Explain fused salt electrolysis.
04

(c) Explain electrolytic refining of Aluminum.
07




Q.4
(a) What are limitations of Ellingham diagram?
03

(b) Differentiate between Electrowinnng and Electro refining.
04

(c) Explain Bayer's process with flow sheet for extraction of
07
Aluminum .



Q.5
(a) Explain autoclave in pressure leaching.
03

(b) Explain the ion exchange process.
04

(c) Discuss oxide free energy diagram in pyrometallurgy.
07



Q.6
(a) Discuss Kroll process.
03

(b) Explain in brief about rate of reaction.
04

(c) Derive and explain Arrhenius Equation.
07



Q.7
(a) Draw flow sheet of Pyro metallurgical extraction of zinc.
03

(b) Draw flow sheet of blast furnace smelling and refining of lead
04
bullion.

(c) Explain Mitsubishi process for Copper production.
07



Q.8
(a) Explain the PIDGEON process of Magnesium extraction.
03
(b) Discuss smelting of Tin Concentrate.
04
(c) Explain Hydro metallurgy route of Ni extraction .
07
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