The effect of both method- microwave heating and conventional muffle furnace heating at 900 ~ 1200 ℃ for 0 ~60 min on high-carbon ferrochrome powder (/% : 55.79Cr

32.76Fe

8.16C

2.34Si) decarburizing by solid decarburizer calcium carbonate (96.04% CaCO

3

) has been studied. Results show that in test conditions the effectiveness of solid phase decarburization of high-carbon ferrochrome powder with microwave heating is more obvious than that with conventional heating and the oxidization of materials is serious as heating by conventional method. With microwave heating mixture at 1100 °C for 60 min the decarburization percentage of high-carbon ferrochrome powder is 79.04% to get better deearburization effectiveness and avoid excessive oxidation of materials.