机理研究表明：理想的制粒效果是形成以返矿为核心，以细粒精矿的粘附料的制粒小球结构模型。
Effective granulation is the formation of granular structure with return as core and concentrate fines as adhering layer.
这是因为制粒后的烧结混合料里的较大焦粉颗粒燃烧效率更高，制粒效果更好，因而原始料层透气性和烧结透气性更好。
This was due to more efficient combustion of larger coke particles in a granulated mix and also to better granulation and therefore higher green feed permeability and sintering permeability.
这项研究表明，我们不能简单地添加木聚糖酶并且假定其具备预想的效果，尤其是当制粒温度较高时。
This study demonstrates that we can't simply add xylanase and assume it's having the expected effect, particularly at the higher pelleting temperatures in common commercial use.
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