What temperatures are reached during the aluminothermic production of chromium?

During the aluminothermic production of chromium, the combustion of the mixture of chromium oxide ($C{r}_2{O}_3$) and finely divided aluminum powder generates temperatures in excess of 2,000 °C (3,600 °F). This intense heat allows for a clean separation of the chromium metal from the slag.1

Prior to this reduction stage, the process involves roasting ore, soda, and lime at 1,100 °C (2,000 °F) to create a calcine, which is subsequently processed to obtain the chromium oxide used in the aluminothermic reaction.1