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。
The present state of using boron containing additives in sinter of iron ore fines was summarized in this paper.
概述了铁矿粉烧结应用含硼添加剂的现状。
The techniques of sinter charging to BF by size grading, and BF return fines screening were the first time employed in our country by ANGANG.
烧结矿分级入炉和高炉返矿筛分，是鞍钢二烧在国内首次采用的两项新技术。
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