在实验室进行的链箅机—回转窑直接还原法的试验研究表明，还原产品的铁收得率与入窑球团的抗压强度、抗磨能力呈正相关关系；球团抗压强度及抗磨能力取决于链箅机焙烧温度。提高链箅机焙烧温度是提高链箅机—回转窑直接还原法的铁收得率和杜绝结圈的重要途径 The experimental study of the direct reduction method in the chain machine-rotary kiln carried out in the laboratory shows that the iron recovery rate of the reduced product has a positive correlation with the compressive strength and anti-wear ability of the pellet into the kiln; the compressive strength and resistance The grinding capacity depends on the chain roasting temperature. Increasing the roasting temperature of the chain machine is an important way to increase the iron recovery rate and eliminate the knot ring of the direct chain reduction machine