Blast furnaces are large structures used in industry to heat up raw materials, like iron ore, to high temperatures. By doing so, they can extract useful substances and create other materials, like iron or steel. Full definition
That, in turn, gets used in blast furnaces to create primary steel. (fool.com)
The smokestacks and blast furnaces of yesterday are gone now but the new business technologies and processes of today are ready to replace them as this site continues its return to productivity and economic vitality.» (www2.erie.gov)
From blast furnaces, basic oxygen furnaces, electric arc furnaces, pickling and rolling operations, to galvanizing - coating, coke and sinter plants, copper and aluminum production facilities — we have worked with all types and sizes of operations. (cleanharbors.com)