将微波加热用于低品位氧化镍矿石的氯化焙烧，产出的焙砂用稀酸浸出。结果表明，采用微波加热代替传统加热时，可以提高镍的浸出率。减小矿石初始粒度、增加微波辐射功率可以提高镍的浸出率。适当增加反应时间和氯化剂ＦｅＣｌ３的加入量，有助于提高镍的浸出率，但当微波辐射时间超过２０ｍｉｎ或ＦｅＣｌ３的加入量超过２８％时，镍的浸出率反而下降。在最佳条件下，镍的浸出率可以达到７１．６５％。 The microwave heating for low-grade nickel oxide ore calcination, calcination output with dilute acid leaching. The results show that the use of microwave heating instead of traditional heating, nickel leaching rate can be increased. Reduce the initial size of ore, increase the microwave power can increase the nickel leaching rate. Appropriate increase of reaction time and addition of chlorination agent FeCl3 help to improve the leaching rate of nickel. However, the leaching rate of nickel decreases when the microwave irradiation time exceeds 20min or when the addition of FeCl3 exceeds 28%. Under the best conditions, the nickel leaching rate can reach 71.65%.