Tri-Coastal Ride 2014

Previous |  Next |  Thumbnails

Blast Furnace No. 1. The large circular pipe fed air from the blast stoves into the base of the furnace through eight openings. This caused the reaction of coke, 2C + O2 => 2CO, and the reduction of iron, Fe2O3 + CO => 2FeO + CO2 and FeO + CO => Fe + CO2. The molten iron flowed into a pool, and limestone, serving as a flux, combined with impurities to form a slag that floated on the iron. The CO, furnace gas, was driven off at the top, and reused as fuel. The molten iron flowed into a series of troughs that fed into casts for bars of raw iron, the resemblance to pigs feeding at a trough gave it the name "pig iron".

All images copyright © 2014 F.W. Vollmer and may not be used without permission.