... magnesium oxide powder with silicon 1,temp 650-700C 2,heavy silicon treatment 3,water heating element Medium temperature magnesium oxide powder ... with silicon1,temp 650-700C2,heavy silicon treatment3,water heating elementHTM ... TESTING EQUIPMENTMEGGERNAME GRADE CHEMICAL COMPOSTION PHYSICAL PROPERTIESMgO CaO Fe2O3 SiO2 Al2O3 Mesh (F.R)S/100g (T.D ...