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低温还原粉化率（ＲＤＩ）是烧结矿冶金性能的一项重要指标，ＲＤＩ的波动直接影响烧结矿的质量，以及高炉的操作和产量．生产实践证明，经ＣａＣｌ２处理能显著降低烧结矿的ＲＤＩ．研究表明，ＣａＣｌ２主要是通过Ｃｌ－在烧结矿表面的化学吸附而产生作用．Ｃｌ－与赤铁矿中Ｆｅ－Ｏ键的电子效应而形成强烈的π键键合作用，增强了赤铁矿抵抗还原过程中应力变化的能力；同时由于Ｃｌ－的作用，提高了玻璃相的断裂韧性，减弱了玻璃相中的裂纹扩展和延伸，从而降低烧结矿的低温还原粉化率．本研究还确定了烧结矿综合断裂韧性与烧结矿ＲＤＩ之间良好的对应关系．
Low temperature reduction and pulverization (RDI) is an important indicator of the metallurgical properties of sinter. The fluctuation of RDI directly affects the quality of sinter, as well as the operation and output of blast furnace. Production practice has proved that the CaCl2 treatment can significantly reduce the sinter RDI. The research shows that CaCl2 mainly works through the chemical adsorption of Cl- on the sinter surface. Cl- and hematite Fe-O bond electron effect and the formation of a strong π-bond, hematite enhanced resistance to stress reduction process; the same time due to the role of Cl-, the glass phase to improve Fracture toughness, weakened the glass phase in the crack growth and extension, thereby reducing the sinter ralph lauren pas cher, low temperature reduction coking rate. The study also identified a good correspondence between sinter comprehensive fracture toughness and sinter RDI.