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Posted Date: 30 Oct 2008 Posted By: Rajesh Member Level: Diamond
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2008 Jawaharlal Nehru Technological University Metallurgy & Material Technology IRON PRODUCTION III B.Tech Supplimentary Examinations, Aug/Sep 2008 Question paper
Code No: RR321804 Set No. 2
III B.Tech Supplimentary Examinations, Aug/Sep 2008
IRON PRODUCTION
(Metallurgy & Material Technology)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) Explain the major deposits and occurrence of Iron ores in the world. [8]
(b) Where are the various steel plants located in India? Give their installed ca-
pacities and other details
2. (a) Mention all the parts of a blast furnace. Explain any one of them. [9]
(b) What are the chief causes of blast furnace refractory failure? Explain. [7]
3. (a) How many types of Hoistening applications are these? Explain any one. [8]
(b) What are the precautions that are required to be taken during the construction
of blast furnace? [8]
4. (a) Comment on the reactions in hearth region of a blast furnace. [6]
(b) Write short notes on the following:
i. Sulphur reaction in blast furnace [5]
ii. Alumina problem in blast furnace [5]
5. (a) What are the advantages and disadvantages of blast furnace slags? [8]
(b) Explain the effects on viscosity by the addition of Magnesia is a blast furnace
operation. [8]
6. (a) Explain the terms ‘Scaffolding and pillaring’ in blast furnace. [8]
(b) What is the impact of burden preparation on blast furnace preparation? [8]
7. (a) What is the importance of ‘Pre-reduced ore as burden in the blast furnace?[8]
(b) Describe the process of ‘Injection of reducing gas’ at the bottom of stack? [8]
8. (a) Explain the process of submerged arc furnace plant for pig Iron production.
[8]
(b) Name any steel plant which produces Pig Iron by indirect process in India and
explain the method followed.
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