Eliminating 1.7 billion tons of CO2 per year with electrified steelmaking

Boston Metal has developed technology to electrify steelmaking and this could reduce CO2 emissions by 5%.

They would use an electrolytic cell instead of a blast furnace. It would use electricity—rather than carbon—to process raw iron ore.

In steelmaking today, iron oxide is placed into a blast furnace with coke, a hard, porous substance derived from coal. Under high temperatures, the coke turns into carbon monoxide, which plucks oxygen off the iron, producing an intermediate metal known as “pig iron”—along with carbon dioxide that wafts into the atmosphere.

This and other steps in the process pump around 1.7 gigatons of carbon dioxide into the atmosphere annually, adding up to around 5 percent of global carbon dioxide emission.

More than 1,000 kg of metal alloys have been produced by Boston Metal since commissioning it’s first reactor.