The results show that the anti-fracture ability of sinters is determined by fracture toughness of calcium ferrite for sinters with large size calcium ferrite.

• 结果表明:铁酸钙尺寸较大时,烧结矿的抗断裂性能由铁酸钙本体的断裂韧性决定,它的尺寸较小时由其形态决定;