本文通过不同工艺因素下,铁矿石、烧结矿与球团矿的低温还原强度变化试验,探讨低温还原粉化的关键致因与机理。认为铁矿石、烧结矿与球团矿低温还原强度这一冶炼性质有赖于本身的矿物组成及其结构形态。当矿相呈现不同程度的复杂矿物组成与致密结构形态下,赤铁矿晶粒的晶变或各晶粒晶界的加宽,不同程度地破坏了结构强度。提出控制原料配比与加工工艺条件以改善低温还原强度。 In this paper, under different technological factors, iron ore, sinter and pellet low temperature reduction strength of the test to explore the key causes and mechanism of low temperature reduction pulverization. It is believed that the smelting properties of iron ore, sinter ore and pellets at low temperature depend on their mineral composition and structure. When the mineralogical phase shows different degree of complex mineral composition and dense structure morphology, the hematite crystal grain or grain boundary broadening, to varying degrees, destroy the structural strength. Proposed control of raw material ratio and processing conditions to improve the low temperature reduction strength.