Download GTU BE/B.Tech 2019 Summer 4th Sem New 2142107 Iron Making Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 4th Sem New 2142107 Iron Making Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2142107 Date:25/05/2019
Subject Name: Iron Making
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) Write note on pulverized coal injection. 03
(b) What are different alternative iron making processes? 04
(c) Discuss briefly the blast furnace irregularities and suggest the remedies. 07

Q.2 (a) Discuss objectives and variables of sintering process 03
(b) Explain?Dwight-Lloyed? Sintering Machine 04
(c) What is Pelletization? Explain theory of bonding and mechanism of ball
formation in pelletization
07
OR
(c) Write short notes on the following: (i) RAFT (ii) Desiliconization 07
Q.3 (a) Explain the importance of maintaining the basicity during refining of Iron
ore.
03
(b) What are the limitations of conventional blast furnace? Suggest the
remedies to overcome it.
04
(c) What is the role of coke and limestone in iron making? Explain 07
OR
Q.3 (a) What do you mean by desulphurizing index? 03
(b) State the requirements for desulphurization of hot metal 04
(c) Explain the factors affecting the charge distribution in blast furnace. 07
Q.4 (a) Discuss objectives and variables of sintering process. 03
(b) Draw & List only operational steps of blast furnace. 04
(c) Discuss use of high temperature blast and its effect on coke rate and
metal-impurity distribution in slag and metal
07
OR
Q.4 (a) Explain the Midrex process 03
(b) Describe the evaluation of iron ore in brief. 04
(c) Discuss the reaction occurs in different zone of blast furnace. 07
Q.5 (a) Write note on reducibility test. 03
(b) Explain the mecum test in brief. 04
(c) Explain theory of bonding and mechanism of ball formation in
palletisation
07
OR
Q.5 (a) Write short note on desiliconization. 03
(b) How oxygen injection in blast furnace improves the operation? Explain 04
(c) What is Slag? How it is formed? Explain its importance in Iron making
Process.
07
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