JNTU
JNTU B.Tech III Year IRON MAKING Previous Question Paper (November/December - 2018 - R16)
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
Name various Integrated Steel Plants in India.
Answer
Major integrated steel plants in India include Tata Steel (Jamshedpur), SAIL plants at Bhilai, Bokaro, Rourkela, Durgapur, and Burnpur (IISCO), and JSW Steel (Vijayanagar).
What are the drawbacks of Indian raw materials for Blast furnace Iron Making?
Answer
Indian iron ores typically have high alumina content (Al2O3), which increases slag viscosity and volume. Additionally, Indian non-coking coals have high ash content, leading to higher coke rates and reduced blast furnace productivity.
Define sintering?
Answer
Sign in to view the complete answer paper.
What is green pellet? How is it obtained?
Answer
Sign in to view the complete answer paper.
Name the refractories used in Stack & Hearth of a blast furnace?
Answer
Sign in to view the complete answer paper.
What is the importance of burden distribution with respect to productivity of blast furnace?
Answer
Sign in to view the complete answer paper.
Explain the effect of CO/CO2 ratio on reduction of iron ore?
Answer
Sign in to view the complete answer paper.
What is “Boudouard reaction”? Give its importance.
Answer
Sign in to view the complete answer paper.
Name different alternative iron making processes.
Answer
Sign in to view the complete answer paper.
What is degree of metallisation for sponge iron? Explain.
Answer
Sign in to view the complete answer paper.
Part B
What are different ores used for production of pig iron? Explain the evaluation of iron ores.
Answer
Sign in to view the complete answer paper.
Explain the terms: smelting, direct reduction and smelt reduction.
Answer
Sign in to view the complete answer paper.
Give a brief history of iron making in India.
Answer
Sign in to view the complete answer paper.
Explain the principles of iron making.
Answer
Sign in to view the complete answer paper.
Explain the principle and working of Dwight-Lloyd sintering machine with a neat sketch.
Answer
Sign in to view the complete answer paper.
Explain theory of bonding and mechanism of ball formation in palletisation.
Answer
Sign in to view the complete answer paper.
What is agglomeration? Explain the methods of agglomeration of Iron ores.
Answer
Sign in to view the complete answer paper.
What is Pelletisation? Describe theory of Pellitisation with necessary sketches.
Answer
Sign in to view the complete answer paper.
Draw neat sketch of blast furnace and explain its working principle.
Answer
Sign in to view the complete answer paper.
Explain the construction and operation of hot blast stoves.
Answer
Sign in to view the complete answer paper.
Explain the blast furnace gas cleaning system and its utilization.
Answer
Sign in to view the complete answer paper.
Explain the factors affecting charge distribution in blast furnace.
Answer
Sign in to view the complete answer paper.
What is Slag? How is it formed? Explain its properties.
Answer
Sign in to view the complete answer paper.
Explain the control of C, Si, S, P in Pig Iron during its production by blast furnace.
Answer
Sign in to view the complete answer paper.
Explain the physical and chemical properties effecting reduction of iron ores.
Answer
Sign in to view the complete answer paper.
What are the modern trends in blast furnace for its improved productivity? Explain.
Answer
Sign in to view the complete answer paper.
What is degree of metallization? Explain.
Answer
Sign in to view the complete answer paper.
Name different sponge iron making methods where gaseous reducing agent is used. Explain Midrex process.
Answer
Sign in to view the complete answer paper.
Briefly explain SL/RN process with a neat sketch.
Answer
Sign in to view the complete answer paper.
Write short notes on Sponge Iron making in India.
Answer
Sign in to view the complete answer paper.