Iron sand contains a lot of Fe3O4 from which Fe2O3 and limestone can be produced which contain CaCO3. Both of these materials are very plentiful in Indonesia. Because of the plentiful of these two materials, research was carried out for the management and development of products with the initial step of analyzing the thermal characterization of mixing of these two materials, namely Calcium Ferrite. Mixing Extracted Fe2O3•H2O from Iron sand and limestone precipitated using solution mixing method has been conducted. Extraction of limestone as the raw material of precipitated calcium carbonate (PCC) and iron sands as that of Fe2O3•H2O was prepared. The PCC and Fe2O3•H2O each are dissolved in 1 M HNO3 and mixed to be most homogeneous with mole ratio of Ca/Fe is 1/4, 1/8 and 1/12. The results of the mixing are characterized by DTA/TGA. The test results showed that there was a drastic decrease in mass to a temperature of 5000C and decreased slowly. In this case it can be said that there are a process of dehydration and calcination before the temperature of 5000C and the subsequent diffusion process occurs.
Volume 11 | 11-Special Issue