|The Rust Jungle posted|
Thanks to Bob, who worked at Republic Steel Warren works Coke plant for 37+ years, for posting this. The smell of them baking coal into Coke will forever remind me of my childhood, riding with my parents up Main Ave to my grandparents house on the west side of Warren. I would always stick my arm out the window to feel the heat of them burning off what I assume is excess coke gas.
The volatile gasses are driven off. What is left is rather pure carbon. Coke burns 4 times hotter than coal. [Railcraft] A quenching car (1 and 2) is then parked at the oven, the door opened and the hot coke is shoved from the other side into the quenching car. The car takes the hot coke to a quenching tower. Maintenance begins on an oven while it is still hot. I could not find a picture of the device that would ride on the loading side (wide spread rails) that has a big plunger that pushes the coke out of the oven into the quenching car.
To achieve the desired coal characteristics, coal from different mines is sorted and blended to achieve the desired properties. [SteelWorks, last paragraph]