61. The fixed carbon content of coke used in Blast furnace is A. <85% B. >85% C. = 85% D. 90% Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
62. Hot spot develops due to . . . . . . . . A. high moisture content of the charge B. high temperature of ascending gases C. local failure of lining D. excessive amount of fines in the charge Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
63. The Midrex process of iron making A. uses a fluidised bed reactor B. recycles a part of exit gas C. uses both CO and H2 for reduction D. uses only H2 for reduction Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
64. The important factors for producing low silicon pig iron in a blast furnace are A. higher temperature and higher basicity B. lower temperature and lower basicity C. lower temperature and higher basicity D. higher temperature and lower basicity Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
65. Slag rate in indian blast furnaces is in the range of . . . . . . . . kg/ton of pig iron A. 150 to 250 B. 350 to 500 C. 250 to 350 D. 1000 to 1500 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
