What is the primary raw material used for the manufacture of metallurgical coke?
Analysis & Theory
Bituminous coal is the most suitable for the production of metallurgical coke due to its coking properties.
Which process is used to manufacture metallurgical coke?
Analysis & Theory
Carbonization is the process of heating coal in the absence of air to produce coke.
What is the name of the oven commonly used for producing metallurgical coke?
Analysis & Theory
Coke ovens are specially designed to heat coal in the absence of air for coke production.
What is the primary use of metallurgical coke?
C
As a reducing agent in blast furnaces
Analysis & Theory
Metallurgical coke is mainly used as a reducing agent in blast furnaces for iron extraction.
Which property of coke is essential for its use in blast furnaces?
C
High compressive strength
Analysis & Theory
High compressive strength ensures coke can support the burden in a blast furnace without crushing.
What does the term 'fixed carbon' in coke refer to?
A
Carbon content that evaporates
B
Carbon that remains after volatile matter is removed
Analysis & Theory
Fixed carbon is the solid carbonaceous residue that remains after volatile matter is driven off.
Which of the following is an undesirable impurity in metallurgical coke?
Analysis & Theory
Sulfur is an impurity that can weaken metal and reduce the quality of steel.
During which stage of the coke-making process are volatile compounds removed?
Analysis & Theory
Carbonization drives off volatile matter, leaving behind coke with high carbon content.
What is the typical temperature range used in the carbonization process to produce metallurgical coke?
Analysis & Theory
High-temperature carbonization (900–1100°C) is used to produce strong and porous metallurgical coke.
What by-products are obtained during the manufacture of metallurgical coke?
B
Carbon dioxide, nitrogen, hydrogen
D
Methane, ethanol, benzene
Analysis & Theory
Coal gas, ammonia, and tar are common by-products recovered during the coke-making process.