摘要：采用针刺法对铁精矿颗粒的结块特性进行测定，分析颗粒粒径、含水量以及外部载荷对结块程度的影响；采用单因素实验法分析在各种不同因素影响下铁精矿颗粒的结块强度变化趋势，利用正交实验法分析各影响因素的主次关系并找出在颗粒结块过程中的关键影响因素。结果表明，铁精矿颗粒的结块强度随着颗粒含水量以及外部载荷的增加而增加，随着颗粒粒径的增加而减弱，当颗粒粒径大于1 mm时，粒径对于结块强度的影响并不明显。影响铁精矿颗粒结块强度的顺序为颗粒粒径、含水量、外部载荷。

关键词：结块特性；针刺法；单因素实验；正交实验

Abstract: Penetrating test was used to study the influence of particle size，moisture and compact load on the agglomeration of ironstone particles．Single factor experiments were performed to qualify the agglomeration tendency with various different parameters; orthogonal experiments were carried out to find out the key influence factor during agglomeration process．The results show that the influence of compact load and moisture is positive，but the influence of particle size during agglomeration process is negative，when particle diameter is larger than 1 mm，its influence on agglomeration is not obvious．The order of factor’s influence on agglomeration is particle size，particle moisture and compact load．

Keywords: particle agglomeration; penetrating test; single factor experiment; orthogonal experiment