Flotation of Pyrrhotite using Cationic Collector

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  • 陽イオン捕収剤による磁硫鉄鉱の浮選
  • ヨウイオンホシュウザイ ニ ヨル ジリュウテッコウ ノ フセン

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Pyrrhotite is one of the minerals which have called attention in recent years. Generally, pyrrhotite is beneficiated as follows: Feed→Magnetic Separation→Xanthate Flotation (or vice versa)<BR>In this conventional flowsheet, the more floatable pyrrhotite is recovered by flotation with xanthate, while the less-floatable is recovered by magnetic separation. This is because the morefloatable pyrrhotite has weak magnetic property, while the less-floatable a stronger tendency.<BR>In this study, the authors have succeeded in recovering the less-floatable pyhrrotite by flotation using 40g RADA per ton ore as a collector. Using RADA increases the floatability of pyrrhotite, which is hardly recovered by the conventional flotation. For instance, in the flotation of Kamaishi pyrrhotite, which showed a recovery of only 17% with 200g potassium ethyl xanthate per ton of ore, a recovery of 86% is obtained with 40g RADA per ton of ore treated.<BR>As the results of this study, the process of magnetic separation may be eliminated in the beneficiation of pyrrhotite, so the flowsheet can be simplified as follows: Feed→Xanthate Flotation→RADA Flotation

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