In this paper, an attempt has been made to study the reduction swelling characters and mechanism of pellets made mainly of Carajas hematite concentrate.
但目前国内对球团的研究主要集中于如何提高其机械强度，对其还原膨胀方面的研究较为欠缺。
The domestic ores are fine magnetite concentrate, and the imported ores mainly are hematite sinter fines.
国产铁精矿是细粒度的磁选精矿，进口铁矿则以粉状赤铁矿为主。
Since magnetite concentrate in AnSteel Groupe mining corporate do not fully meet the consumption requirements of pellets, hematite and magnetite concentrate are mixed to prepare pellets.
针对鞍钢集团矿业公司磁铁矿精矿不能完全满足球团矿的用量要求，采用赤铁矿与磁铁矿的精矿混合配制球团。
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