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pavankrishna
pavankrishna
Asked: June 5, 2021In: Iron & Steel Making

why sinter is used upto 50%, but pellet 15-20% in blast furnace burden even though pellets have good permeability?

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Sudhir Sahu
Sudhir Sahu
Asked: January 18, 2021In: Iron & Steel Making

Why dolomite is added to blast furnace ?

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: June 15, 2020In: Iron & Steel Making

GATE MT 2019 Q41

A blast furnace charged with hematite containing 90 wt.% Fe2O3 produces liquid iron with 3.6 wt.% carbon. Coke containing 90 wt.% carbon is charged at a rate of 500 kg per Metric ton of liquid iron produced. The blast furnace ...Read more

A blast furnace charged with hematite containing 90 wt.% Fe2O3 produces liquid iron with 3.6 wt.% carbon. Coke containing 90 wt.% carbon is charged at a rate of 500 kg per Metric ton of liquid iron produced. The blast furnace top gas contains (by volume), 22% CO, 18% CO2, and balance nitrogen. The volume of the blast furnace top gas [in m3 (NTP), rounded off to the nearest integer] is _______.Given: Assume ideal gas behavior, and molar volume of the gas at NTP is 22.4 litre.

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AakashSingh
AakashSinghCopper
Asked: April 22, 2020In: Uncategorised

What is the role of silicon in BF reaction?

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Askmemetallurgy Official
Askmemetallurgy Official
Asked: April 3, 2020In: Iron & Steel Making

GATE MT 2015 Q43. An iron blast furnace produces hot metal containing 95% Fe. The iron ore charged into the furnace contains 95% Fe2O3 and the rest is gangue. Assume that all the iron in the ore goes to the hot metal. The amount of iron ore (in kg) required for producing 1000 kg of hot metal is _____.  Given, Atomic weight of Fe= 56 g mol-1 and that of Fe2O3 = 160 g mol-1.

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Askmemetallurgy Official
Asked: March 28, 2020In: Iron & Steel Making

GATE MT 2014 Q51. The important factors for producing low silicon pig iron in a blast furnace are

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2.63%(A) The important factors for producing low silicon pig iron in a blast furnace are ( 2 voters )
14.47%(B) lower temperature and lower basicity ( 11 voters )
71.05%(C) lower temperature and higher basicity ( 54 voters )
11.84%(D) higher temperature and lower basicity ( 9 voters )
Based On 76 Votes

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Askmemetallurgy Official
Poll
Askmemetallurgy Official
Asked: March 21, 2020In: Iron & Steel Making

GATE MT 2013 Q18. The permeability of burden in an ironmaking blast furnace can be improved by using

Poll Results

15.79%(A) fine charge ( 6 voters )
57.89%(B) agglomerated charge ( 22 voters )
10.53%(C) oxygen enriched air blast ( 4 voters )
15.79%(D) pulverized coal injection through the tuyeres ( 6 voters )
Based On 38 Votes

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