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1·The results show that sodium bentonite can greatly improve the drop strength and compressive strength of green pellets, while calcium bentonite could enhance shock temperature of green pellets.

结果表明，钠基膨润土能使生球落下强度、抗压强度显著提高；而钙基膨润土在改善球团爆裂温度方面优于钠基膨润土。

2·The effects of binder and damp mill on green balls, the process for preheated pellets with high strength and easy reduction, and coal-based direct reduction iron(DRI) were studied.

以新疆磁铁精矿为原料，采用“一步法”直接还原，研究粘结剂种类和润磨方式对生球质量的影响，高强度、高还原性预热球团的制备及煤基直接还原的工艺。