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陕西某磷矿综合回收试验研究 被引量:2

Test study on comprehensive recovery of a phosphorite from Shaanxi
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摘要 陕西某磷矿石矿物成分复杂,主要有用矿物有磷灰石、稀土、磁铁矿和长石,长石精矿质量因被氧化铁严重污染而受到影响。针对该矿石的性质特点进行了选矿试验研究,最终原矿采用磨矿—弱磁选选铁—铁尾矿浮选选磷(稀土)—磷尾矿反浮选除杂—长石粗精矿强磁选除杂的联合工艺流程,可获得铁品位TFe 60.10%、铁回收率TFe 16.04%的铁精矿;品位P_2O_5 25.22%、回收率P_2O_5 81.10%的磷精矿;品位K_2O 2.58%、Na2O 5.62%,回收率K_2O 81.04%、Na_2O 83.82%的长石精矿,较好地实现了该非金属矿的综合回收。 A phosphorite from Shaanxi had complex mineral components, and its main useful minerals involved apatite, rare earth, magnetite and feldspar. The quality of feldspar concentrate was affected due to being severely contaminated by ferric oxide. According to the features of the phosphorite, beneficiation test study was conducted. Finally, the combined process was applied that involved grinding, iron separation by weak magnetic separation, flotation of iron tailings to recover phosphate(rare earth), reverse floatation of phosphate tailings to remove impurity and strong magnetic separation of feldspar coarse concentrate to remove impurity, thus the iron concentrate with TFe grade of 60.10% and iron recovery of 16.04%, the phosphate concentrate with P_2O_5 grade of 25.22% and P_2O_5 recovery of 81.10%, the feldspar concentrate with K_2 O grade of 2.58%, Na_2 O grade of 5.62%, K_2 O recovery of 81.04% and Na_2 O recovery of 83.82% were obtained. Comprehensive recovery of the non-metallic ore was realized.
出处 《矿山机械》 2016年第6期62-67,共6页 Mining & Processing Equipment
关键词 磷灰石 稀土 长石 磁铁矿 浮选 磁选 apatite rare earth feldspar magnetite floatation magnetic separation
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