Direct Reduction The direct reduction unit prepares the pellet by means of a chemical reaction to feed the arc furnace. Tosyali Algérie’s Direct Reduction Unit is the largest Hot / Cold DRI production unit in the world. Direct reduction is a set of processes using reformed natural gas transforming the ore into Iron without reaching the melting temperature. The principle is to expose the iron ore to the reducing action of the gas at high temperature in order to deoxidize it. The reformed natural