Indonesia is a developing country that has rich deposit of natural resources particularly in mineral ores. Many of iron sand found in coastal Indonesia that contains some valuable minerals such as hematite (Fe2O3), ilmenite (FeTiO3) sand rutile (TiO2). Research study related to iron sand has developed that aims to determine the effect of temperature against the form of titanomagnetite in reduction process using coal as reductor and sodium sulphate (Na2SO4) as an additive. The results of XRD characterization and semi- quantitative with temperature variable 700°C, 800°C and 900°C obtained that 900°C is an optimum temperature with amount of titanomagnenite (Fe2TiO4-Fe3O4) as much as 48.5.