为从高钛高炉渣中分离出钙钛矿(CaTiO3)，降低渣中TiO2含量，进行了利用微波辐射在渣中引发裂纹，降低炉渣强度，节约碾磨能耗的研究。由实验得知，高钛高炉渣能被微波有效加热，并在炉渣中引发微裂纹；随着微波处理时间的延长，引发的裂纹也随之扩展。为研究引发的裂纹对碾磨渣的影响，对经过微波处理的高钛高炉渣进行了耐压强度测试。测试结果表明，高钛高炉渣中引发微裂纹后，渣的耐压强度下降(经5次、5 min微波处理后，渣的强度大约降低了20%)；渣的耐压强度随微波处理时间的延长和微波循环次数的增加而降低，尤其是微波循环次数对渣耐压强度的影响更为显著。
One effective way to reduce the TiO2 content in the blast furnace (BF) high TiO2 slag is to separate CaTiO3 from the slag. In order to save the required energy for grinding the slag, the compressive strength of the slag is reduced by inducing cracks in it with the help of microwave. The slag could effectively be heated in the microwave field, and crack was induced in it. The crack propagation occurs with the increasing of microwave processing time. In order to investigate the effect of induced cracks on grinding of the slag, compression test was done. The result shows that the compressive strength of the slag is effectively decreased when crack is induced in it (the compressive strength of the slag is decreased by about 20% after 5 cycles, for 5min microwave processing). The compressive strength of the slag decreases with the increase of the microwave processing time and the thermal cycle number. But the thermal cycle number of microwave processing affects the compressive strength of the slag more effectively.
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