A process for removing chloride from a chloride-containing iron oxide to produce iron oxide with a reduced chloride content

摘要

A process for removing chloride from a chloride-containing iron oxide to produce iron oxide with a reduced chloride content, which process comprises the steps of: a) mixing the chloride-containing iron oxide with a solution in a conventional manner for a period of time sufficient to form a mixture, the said solution comprising sulphuric acid (H2SO4); and b) separating the iron oxide from the mixture formed in step (a) and then optionally heating at a temperature from 1°C above the ambient temperature to 1400°C for a period of time from 1 minute to 100 hours to obtain the iron oxide having a reduced chloride content.