Results on sized samples show that DCB extraction can dissolve finer magnetite less than 1 m.Furthermore, it can dissolve a part of coarse MD magnetite as well.

• 粒级分离基础上的结果表明，DCB提取能有效地溶解<1 m的细晶粒磁铁矿，不仅如此，还能溶解相当一部分粗晶粒磁铁矿。