In the blast furnace route of ironmaking, metallurgical coke are used for four main purposes: first to act as a reducing agent , second to fulfil the energy demand of the endothermic reduction reactions, third to maintain the structure and permeability inside the furnace and fourth to act as a carburiser for freshly ...
Why are coke and limestone added to the blast furnace?
Coke, limestone flux, and iron ore (iron oxide) are charged into the top of the furnace in a precise filling order which helps control gas flow and the chemical reactions inside the furnace .
Why coke is used while charging blast furnace?
Metallurgical coke, along with iron ore and limestone, is layered into a blast furnace to convert the iron ore to metallic iron . Coke, which is mostly carbon, reacts with the blast air to produce carbon monoxide, which, in turn, reacts with the iron oxide to produce carbon dioxide and metallic iron.
What are the two functions of coke in blast furnace?
Coke serves multiple roles in the blast furnace. It acts as a reducing agent and source of reducing CO gas, a source of heat, a filter of dust and soot, a carburiser of hot metal and as a structural support material .
Which is a better fuel coal or coke?
Coke is a better fuel than coal because; -Coke produces more heat on burning than coal. -Coke has a higher calorific value than coal. When equal masses of coke and coal are burnt, coke produces more heat.
Why coke is not used as a fuel?
Answer: because fuel has different properties than coke as fuel can help a car move and coke can’t do do that as it does not have the chemicals to complete that task ...
How steel is made in blast furnace?
To make steel, iron ore is first mined from the ground . It is then smelted in blast furnaces where the impurities are removed and carbon is added. ... About halfway down, limestone begins to react with impurities in the ore and the coke to form a slag. Ash from the coke is absorbed by the slag.
What is a blast furnace used for in real life?
Blast furnaces are used to produce pig iron from iron ore for subsequent processing into steel , and they are also employed in processing lead, copper, and other metals. Rapid combustion is maintained by the current of air under pressure.
What fuel do you use for a blast furnace?
Add Fuel to the Blast Furnace
In this tutorial, we are going to use coal as our fuel. TIP: Some fuels burn longer than others and therefore can smelt more items.
Why is coke so important?
Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation process. It is an important industrial product , used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern.
What is M40 in coke?
The coke is characterized in terms of quality indices M40 and M10. Index M40 is the expression as a percentage of the fraction greater than 40 mm that is left in the drum . M10 index is the percentage fraction less than 10 mm from the test resulting.
How does coke make steel?
Coke is used as a fuel and a reducing agent in melting iron ore. It is produced by baking coal until it becomes carbon by burning off impurities without burning up the coal itself. When coke is consumed it generates intense heat but little smoke, making it ideal for smelting iron and steel.
Which fuel is the cleanest?
In terms of emissions from power plant sources, natural gas is the cleanest fossil fuel. Using data collected from the Energy Information Administration (EIA) division of the Department of Energy (DOE), the emissions of several stack gasses are compared for natural gas, oil, and coal.
Is coke is a clean fuel?
Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. The carbon monoxide produced by its combustion reduces iron oxide (hematite) to the iron product. Although coke is more expensive than coal, it can be used in households as a clean fuel , relatively free of smoke and impurities.
What is difference between coke and coal?
Coal is a lustrous, black fossil fuel that includes impurities, generates smoke, and generates less heat than coke when burned . Coke is a dingy, black coal waste that burns hotter and cleaner. ... Coke is a fuel made from mineral coal that has been calcined or dry distilled.
What was in Dr Pepper?
Dr. pepper is actually a blend of all 23 flavors . ... The 23 flavors are cola, cherry, licorice, amaretto (almond, vanilla, blackberry, apricot, blackberry, caramel, pepper, anise, sarsaparilla, ginger, molasses, lemon, plum, orange, nutmeg, cardamon, all spice, coriander juniper, birch and prickly ash.
