JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III Year IRON PRODUCTION Previous Question Paper (May - 2018 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
Classify iron ores based on gangue.
Answer
Iron ores are classified based on their gangue content into: Acidic ores (containing high silica, SiO2) and Basic ores (containing high lime, CaO, or magnesia, MgO). Additionally, they may be classified as Self-fluxing if the gangue ratio allows for slag formation without external flux.
Where are the iron ores deposits situated in India and World?
Answer
In India, major iron ore deposits are situated in Odisha, Jharkhand, Chhattisgarh, Karnataka, and Goa. Globally, significant deposits are found in Australia, Brazil, China, Russia, Ukraine, and Canada.
What are the required properties of lining in bosh region of blast furnace?
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Draw the figures of dust catcher and scrubber and label all the parts.
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What are the effects of carbon and sulphur on iron and steel?
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What are the required properties and uses of blast furnace slags?
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Compare pig iron and sponge iron.
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What is the remedy for ring formation in rotary kiln process?
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Why are reduction rates high in smelting reduction process?
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List out the advantages of ELRED process.
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Part B
Explain in detail about the developments of iron production.
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With the help of a neat sketch, explain the process of DL machine.
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Describe the different water - particle systems during pelletization.
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Describe the following: a) Blowing in b) Blowing out c) Banking.
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Explain the reasons, effects and remedial measures for the following: a) Hanging b) Slip c) Channeling d) Pillaring.
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Explain about the factors effecting reducibility of iron ores.
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Draw the relevant CO/CO2 and H2/H2O diagrams in contact with various iron oxides and discuss about them.
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Explain about the factors that decrease the coke rate of a blast furnace operation.
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Explain about bell-less top charging mechanism of the blast furnace.
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Explain the following: a) Methods of increasing blast furnace operation b) MIDREX process.
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Explain the fundamentals of following: a) Smelting reduction process b) INRED and ELRED processes.
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With the help of a neat sketch explain the following: a) COREX process b) Plasma smelting process.
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