CPD 24 2015: Introduction to ground granulated blast ...
20/10/2015 · Blast furnaces operate at temperatures of up to 2,000°C and are fed with a carefully controlled mixture of iron ore, coke and limestone. The iron ore converts to iron, which sinks to the bottom of the furnace. The remaining materials form a slag that floats on top of the iron. The molten iron and slag are drawn off at regular intervals from the furnace. As the slag is drawn off, its chemistry ...