一绪言作为炼铁原料,因含磷量高而不能直接利用,必须与低磷铁矿石混合,使磷品位降至0.2％以下才能利用的矿石,在各处都大量存在着。本文系描述对这类矿石所进行的各种脱磷试验的结果。试验中所使用的矿石有两种: (1) 含磷灰石的磁铁矿; (2) 含磷灰石的赤铁矿。对这些试料脱磷,以使这类矿石能单独作 INTRODUCTION As a raw material for ironmaking, ores, which can not be used directly due to the high phosphorus content, must be mixed with low-phosphorus iron ore so that the grade of phosphorus can be reduced to less than 0.2% to be available everywhere. This article describes the results of various dephosphorization tests performed on this type of ore. There are two types of ores used in the tests: (1) apatite magnetite; and (2) apatite-containing hematite. Dephosphorization of these samples, so that such ore can be made separately