Carbothermal reduction is a process of reducing metal oxides to metals by heating them in the presence of carbon. In this process, the metal oxide is mixed with carbon, usually in the form of coke, and heated to a high temperature in a furnace. The carbon reacts with the metal oxide to form carbon dioxide and the metal, which can then be collected by various means such as distillation or electrolysis.

This process is commonly used in the extraction of metals such as iron, zinc, and titanium. The carbothermal reduction of iron oxide is the basis of the traditional blast furnace method of producing iron, where the iron oxide is mixed with coke and heated in a furnace. The carbon in the coke reacts with the oxygen in the iron oxide to produce carbon dioxide and the molten iron, which is then tapped off from the furnace.
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