In 1821 P. Berthier heated a mixture of charcoal, chromium oxide and iron oxide in the crucible to produce ferrochromium. This method has been used until 1857 Freima (E.C. Fremy) using Tasmania (Tasmania) iron chromium ore, smelting in a blast furnace to obtain Tasmanian pig iron containing 7% ~ 8% Cr. From 1870 to 1880, ferrochromium produced in the blast furnace contained 30% to 40% Cr and 10% to 20% C. H.
Moissan has done a lot of work on smelting ferroalloys in electric furnaces, and in 1893 published a report on the production of high-carbon ferrochromium containing 67% to 71% Cr and 4% to 6% C in reduced chromium ore in the electric furnace . Replacing blast furnaces with electric furnaces for smelting high-carbon ferrochromium is a major step forward. In 1886 Odstjerna (E.G. Odelstjerna) described the production of high carbon ferrochromium containing 70% Cr in an electric furnace in Sweden.
