Metallurgical coke serves a major role in steel production, used primarily as a raw material rather than a fuel in blast furnaces. This difference helps in understanding its significance in the steel making process.
Metallurgical coke is the outcome of subjecting metallurgical coal, also known as coking coal, to a coking process. This specialized coal, distinguished by its low sulfur and phosphorous content, high carbon content, and effective coking ability, undergoes heating without air to yield coke. The resulting metallurgical coke is a robust, porous substance with a high carbon content.
Metallurgical coke serves as a reducing agent and provides the necessary heat for the entire process. It facilitates the reduction of iron oxide to molten iron and, owing to its high carbon content, aids in forming a stable and porous bed within the blast furnace, ensuring efficient gas flow and reaction.
While metallurgical coke primarily serves as a raw material, it contributes to the thermal needs of the steel making process as a secondary energy source. Nevertheless, its primary function in the reduction of iron ore remains paramount. Metallurgical coking coal is vital for ensuring the quality of the coke produced. Various metallurgical coal companies play a crucial role in the supply chain, focusing on mining and processing coking coal while adhering to stringent quality standards.
In this scenario, Ferrous Vedanta Metalbazaar stands out as a prominent contributor to the industry, offering high-quality metallurgical coke customized to the specific requirements of steel manufacturers. The company employs advanced technologies and rigorous quality control measures to guarantee that its metallurgical coke aligns with the exacting standards of blast furnace operations.
through the top of the blast furnace
According to steel.nic.in; Coke Rate is measured in Kgs of BF Coke consumed per tonne of Hot Metal produced in the Blast Furnace(Kg/THM). By convention, this excludes coke (nut/pearl coke) mixed with sinter etc. Introduction of high quality coke to a blast furnace will result in lower coke rate, higher productivity and lower hot metal cost. This principal is followed by many private chemical firms like Coke Oven Consultants and so on.
Hot air is blasted into the blast furnace to burn the coke (a cheap form of carbon) added to form carbon dioxide.
Several things come out of blast furnaces. They are listed here: 1) A molten version of whatever material was put in it to begin with, 2) Incredible heat, 3) Powerfull light, 4) A waste gas and usually some slag remnant of the fuel that powers the furnace.
In essence nothing, a Cupola furnace is a type of blast furnace in that it is charged at the top and tapped at the bottom and air is blasted into the furnace via a wind belt and tuyres. A blast furnace in a steel works is a huge structure operated for long periods of time, it is charged with iron ore, coke and limestone and reduces the iron ore into pure iron. A Cupola furnace, as used in the foundry re melts pig iron, from the blast furnace, along with foundry scrap, steel scrap and scrap iron engine blocks and produced iron alloys of various specifications. A Cupola furnace is usually operated on a daily basis but some types can be continuously operated for several weeks
to burn coke that will burn the raw material
through the top of the blast furnace
the Coke supplies carbon monoxide to reduce the ore in a blast furnace and supplies heat to melt the iron.
Metallurgical coal, also known as coking coal, is used in the steelmaking process to create coke. Coke is a key component in blast furnace iron smelting, as it provides the necessary carbon for extracting iron from its ores. This makes metallurgical coal essential for producing steel and other metal products.
that would depend on the size of the blast furnace.
According to steel.nic.in; Coke Rate is measured in Kgs of BF Coke consumed per tonne of Hot Metal produced in the Blast Furnace(Kg/THM). By convention, this excludes coke (nut/pearl coke) mixed with sinter etc. Introduction of high quality coke to a blast furnace will result in lower coke rate, higher productivity and lower hot metal cost. This principal is followed by many private chemical firms like Coke Oven Consultants and so on.
The amount of coke required for the production of one ton of hot metal in a blast furnace can vary, but on average, it takes about 800-1000 kilograms of coke per ton of hot metal. Coke is used as a fuel and reducing agent in the blast furnace to help convert iron ore into molten iron.
to reduce basicity
Coke is added to the blast furnace instead of coal because coke is a purified form of coal that has higher carbon content and produces less impurities when burned. This helps maintain the purity of the iron being produced in the blast furnace. Additionally, coke generates higher temperatures, promoting better efficiency in the iron-making process.
The blast furnace is a huge, steel stack lined with refractory brick, where iron ore, coke and limestone are dumped into the top, and preheated air is blown into the bottom. The raw materials require 6 to 8 hours to descend to the bottom of the furnace where they become the final product of liquid slag and liquid iron.
Hot air is blasted into the blast furnace to burn the coke (a cheap form of carbon) added to form carbon dioxide.
Mainly the type of coke being used. The sulfur, ash and carbon content are different.