Wet separation of the primary Siberian iron-ore concentrates processed at Abagursk enrichment facility (OAO Evrazruda) is studied in the laboratory. Nine samples of concentrates (-0.07 mm class) from magnetite ore and weakly oxidized ore are subjected to wet magnetic analysis in a field of 80 kA/m. The basic magnetic characteristics of the initial concentrates and the products obtained on separation are measured. The yield of magnetic product is greatest for magnetite ores: more than 68% (Abakan), as compared to 43- 45% for weakly oxidized ore. Thus, the yield of magnetic product falls with decrease in magnetite content in the initial material. The following practical recommendations are offered: (1) it is expedient to enrich weakly oxidized ore after mixing with magnetite ore, so as to reduce the loss of iron with the tailings; (2) the magnetic systems of PBM 90/250 separators must be reconstructed, with the introduction of stronger magnets.
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机译：在实验室研究了在Abagursk浓缩设施（OAO Evrazruda）处理的西伯利亚主要铁矿石精矿的湿法分离。对磁铁矿和弱氧化矿石中的九种精矿样品（-0.07毫米级）在80 kA / m的磁场中进行湿磁分析。测量了初始浓缩物和分离时获得的产物的基本磁特性。磁铁矿的磁性产品产量最高：超过68％（阿巴坎），而弱氧化矿石的产率为43-45％。因此，磁性产品的产率随着初始材料中磁铁矿含量的降低而下降。提供以下实用的建议：（1）在与磁铁矿混合后富集弱氧化矿石，以减少尾矿中铁的流失是合宜的。 （2）必须重建PBM 90/250分离器的磁性系统，并引入更坚固的磁体。
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