Most global primary steel production is done using coal-powered blast furnaces
A blast furnace is a large, vertical structure used for smelting iron ore to produce pig iron, which is then converted into steel 1. Around 70% of the world's steel production is done using blast furnaces 2. Despite the increasing recognition that coal-powered blast furnaces are incompatible with global climate goals, over 70% of announced new steel production plants will use blast furnaces 3.