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海绵铁是铁矿石直接还原法的产物。海绵铁的高温压块是目前海绵铁最主要的处理工艺。压块过程中的海绵铁可以用Drucker-Prager Cap模型来描述其力学行为。通过一系列试验方法对海绵铁的高温压缩性能和经过压块后的热压铁的力学性能进行检测,获取了关于其屈服规律、摩擦性能和抗压强度等方面的数据。并利用这些数据,提出了一套确定适用于海绵的Drucker-Prager Cap模型具体参数的可行方案。另外总结了屈服面、抗压强度和压块密度分布情况等数据随温度、压力、摩擦系数的变化规律。
Sponge iron is a direct iron ore reduction method. Sponge iron high-temperature briquette is currently the most important iron sponge processing. Sponge iron during briquetting can be used to describe the mechanical behavior of the Drucker-Prager Cap model. A series of test methods were used to test the high-temperature compression properties of sponge iron and the mechanical properties of hot-pressed iron after briquetting, and the data about yield law, friction performance and compressive strength were obtained. Using these data, a set of feasible solutions to determine the specific parameters of Drucker-Prager Cap model for sponge was proposed. In addition, the variation rules of yield, compressive strength and briquette density distribution with temperature, pressure and friction coefficient are summarized.