Met Coke Specifications- The difference between Coal & Coke

 

Met Coke is made from low sulfur bituminous coal and low ash with unique coking properties. 

To fuse the fixed carbon and inherent ash and drive off most of the volatile matter, the Coal is inserted into ovens and heated up to 1000 degrees Fahrenheit. 

The final product is nearly a pure carbon source with sizes ranging from basketballs (foundry coke) to fine powder (coke breeze). 

Metallurgical Coal is used in the purification and production of Met Coke. The hazardous components are released during the heating process resulting in the final product of non-melting, solid, stable carbon. However, the ‘ash’ elements remain encapsulated in the resultant Met Coke, which was part of the original bituminous Coal. Ability to burn while producing little or no smoke is one of the attributes of Met Coke. 

Products that require high-quality, tough, resilient carbon are created using Met Coke. Met Coke, limestone, and iron ore are mixed in high-temperature furnaces, where extreme heat causes the chemical properties to bond, forming iron and steel. More than 95% of the Met Coke is used for the iron and steel industries. 

Coal & Coke 

Coal and Coke both fall under the type of fossil fuel. The difference between these two fuels is that Coke contains mostly water and less than half the carbon content of Coal, whereas Coal is mostly carbon. 

Coal

Mined from the earth’s surface is the most common form of fossil fuel known as Coal, and it contains sulfur, nitrogen, and other chemical compounds, but it primarily consists of carbon. Coal can be burned as a solid fuel to provide heating and power or used to produce electricity and heat energy. 

Features of Coal

• Found only on earth

• It is one of the most widely traded fuels in the world since it can be efficiently mined, transported, and is abundant in natural resources. 

• Since Coal is rich in CO2, it acts as a good carbon fuel, leading to a high burning temperature. But on the other hand, a significant amount of ash that requires processing is also produced by Coal.

• Some examples of Coal can be found in the geologic record from rocks up to 350 million years old. 

• Coal may be soft at room temperature and is typically black or brown. 

• Used mainly for stationary heating and power generation, Coal acts as an energy source. 

Coke

Made by heating a solution of limestone, chalk or dolomite, a mixture of carbon and hydrogen gas is formed, producing Coke. Coke is used as a drying agent in the chemical industry and as a fuel to make glass and bricks. Coke can also be used to produce electricity and heat energy.

Features of Coke 

• It is produced only from Coal.

• Coking is the process of turning Coal into Coke, and the temperatures are over 600 degree Celsius.

• In a gas form, the carbon is released from the Coal and is left to cool down. 

• A large amount of graphite (carbon) and ash inside the Coke can appear as a friable, porous mass. 

• About 6,000 BTU per pound, lending to its high calorific value, Coke is dense, black, and has high carbon content. 

Difference between Coal & Coke 

• Found on the earth, Coal is a fossilized material.

• Through the coking process, Coke is produced from Coal. 

• Making it into Coke and injecting it into furnaces to give heat energy is the only way Coke can be used as a fuel. 

• Coal can be used to generate electricity through the burning of Coal or to produce heat energy in furnaces.

• Coke has slightly more than half the carbon content than a standard bag of Coal. 

• Compared to Coal, Coke also has a higher amount of ash content. 

• With a calorific value of about 6,000 BTU per pound, Coke is rich in carbon. 

• Coal produces carbon dioxide and soot when it burns and contains around 30-60% carbon. 

• Around 3,800-5,500 BTU per pound is the Coal’s calorific value.  

• Coke is less valuable than Coal as a consumer product since it has higher ash content than Coal. However, it is still a high-temperature fuel. 

• Coke can be used in blast furnaces to smelter and purify iron ore.

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