Subject Code: 2142107
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER- IV (New) EXAMINATION - WINTER 2019
Subject Name: Iron Making
Time: 10:30 AM TO 01:00 PM
Date: 16/12/2019
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
- (a) How the term ‘pig iron’ originated? MARKS 03
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(b) What are the developments that led to Modern Iron Making? MARKS 04
(c) With neat sketch of blast furnace, illustrate zones in blast furnace and its reactions. Also explain basic features. MARKS 07 - (a) What is basicity of slag? MARKS 03
(b) List the minerals of Iron with formula, Color and Composition %Fe. MARKS 04
(c) Explain with sketch the modern iron making from the ancient iron making step by step. MARKS 07--- Content provided by FirstRanker.com ---
OR
(c) Explain the basic principle of sintering. With neat sketch explain down draught sintering process. MARKS 07 - (a) What are the functions of coke in blast furnace? MARKS 03
(b) How the angle and size of the bell affect the distribution of burden in blast furnace? MARKS 04
(c) Explain valuation of iron ore. MARKS 07--- Content provided by FirstRanker.com ---
OR
(c) Define coke. What do you mean by metallurgical coal or coking coal? MARKS 07 - (a) What is the agglomeration of iron ores? Classify the process of agglomeration and explain any one. MARKS 03
(b) What are the steps of pelletisation process? Explain theory of bonding. MARKS 04
(c) What do you mean by induration of pellets? MARKS 07 - (a) Compare and contrast disc and drum pelletiser. MARKS 03
(b) Illustrate with figure Dead man’s zone & coke slit in blast furnace and explains it. MARKS 04
(c) OR
What is the full form of RAFT? Explain briefly. MARKS 07 - (a) Briefly explain Slag-metal reaction in blast furnace. MARKS 03
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(b) Write a short note on Thermodynamic equilibria for Fe-C-O system. MARKS 04
(c) What do you mean by banking in blast furnace operations? MARKS 07 - (a) What are the irregularities of blast furnace? Give remedies for two irregularities. MARKS 03
(b) Write a short note on mini blast furnace. MARKS 04
(c) OR--- Content provided by FirstRanker.com ---
Enlist the alternative methods of Iron Making. MARKS 07 - (a) Discuss different charging system in blast furnace iron making. MARKS 03
(b) Explain the kinetics of reduction of iron oxide in stack region. MARKS 04
(c) MARKS 07
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