GTU BE 2019 Summer Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-IV(NEW) — EXAMINATION - SUMMER 2019
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Subject Code: 2142107
Subject Name: Iron Making
Time: 02:30 PM TO 05:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.No. | Question | Marks |
|---|---|---|
| Q.1 (a) | Write note on pulverized coal injection. | 03 |
| Q.1 (b) | What are different alternative iron making processes? | 04 |
| Q.1 (c) | Discuss briefly the blast furnace irregularities and suggest the remedies. | 07 |
| Q.2 (a) | Discuss objectives and variables of sintering process | 03 |
| Q.2 (b) | Explain “Dwight-Lloyed” Sintering Machine | 04 |
| Q.2 (c) | What is Pelletization? Explain theory of bonding and mechanism of ball formation in pelletization | 07 |
| OR | ||
| Q.2 (a) | Write short notes on the following: (i) RAFT (ii) Desiliconization | |
| Q.2 (b) | Explain the importance of maintaining the basicity during refining of Iron ore. | 04 |
| Q.2 (c) | What are the limitations of conventional blast furnace? Suggest the remedies to overcome it. | 07 |
| Q.3 (a) | What is the role of coke and limestone in iron making? Explain | 03 |
| OR | ||
| Q.3 (a) | What do you mean by desulphurizing index? | 03 |
| Q.3 (b) | State the requirements for desulphurization of hot metal | 04 |
| Q.3 (c) | Explain the factors affecting the charge distribution in blast furnace. | 07 |
| Q.4 (a) | Discuss objectives and variables of sintering process. | 03 |
| Q.4 (b) | Draw & List only operational steps of blast furnace. | 04 |
| Q.4 (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 |
| Q.4 (b) | Describe the evaluation of iron ore in brief. | 04 |
| Q.4 (c) | Discuss the reaction occurs in different zone of blast furnace. | 07 |
| Q.5 (a) | Write note on reducibility test. | 03 |
| Q.5 (b) | Explain the mecum test in brief. | 04 |
| Q.5 (c) | Explain theory of bonding and mechanism of ball formation in palletisation | 07 |
| OR | ||
| Q.5 (a) | Write short note on desiliconization. | 03 |
| Q.5 (b) | How oxygen injection in blast furnace improves the operation? Explain | 04 |
| Q.5 (c) | What is Slag? How it is formed? Explain its importance in Iron making Process. | 07 |
Date: 25/05/2019
Total Marks: 70
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