攀西地区超微细粒级钛铁矿资源选矿工艺研究

    Research on Mineral Processing Technology of Ultrafine Ilmenite Resources in Panzhihua-Xichang Area

    • 摘要: 这是一篇矿物加工工程领域的论文。针对攀西地区某选矿厂的超微细粒级钛铁矿难回收的问题,进行了浮选工艺流程的对比研究。采用直接浮选、脱泥-浮选、 “离心-浮选”、“超导-浮选”、“强磁-浮选”、“悬振-浮选”等选矿工艺流程,试验结果表明:直接浮选和脱泥-浮选工艺无法获得TiO2品位大于46%的钛精矿产品;悬振和强磁选可以获得品位较高的预富集精矿,有利于后续浮选作业,离心和超导可以获得回收率较高的预富集精矿,可保证钛铁矿的有效回收。但考虑到超导预富集工艺工业实施投入大、目前尚无成熟工业案例;而强磁选和悬振预富集工艺易于工业化实施,但悬振选矿机的单机处理能力有限。因此,最终确定最优选矿工艺为“强磁-浮选”,可获得钛精矿品位46.62%,开路浮选作业回收率58.32%,全流程回收率43.78%的指标。

       

      Abstract: This is an essay in the field of mineral processing engineering. Aiming at the problem of difficult recovery of ultrafine ilmenite from a concentrator in Panzhihua-Xichang Area, a comparative study of flotation process was carried out. Using direct flotation, desliming flotation, "centrifugal-flotation", "superconducting flotation", "strong magnetic flotation", "suspension vibration-flotation" and other beneficiation processes, the test results show that: direct flotation and desliming flotation processes can not obtain titanium concentrate products with TiO2 grade greater than 46%. Suspension vibration and high intensity magnetic separation can obtain higher grade preenriched concentrate, which is conducive to the subsequent flotation operation. Centrifugation and superconductivity can obtain higher recovery of preenriched concentrate, which can ensure the effective recovery of ilmenite. But considering that superconducting preenrichment technology industry implementation investment is large, there is no mature industrial case at present; The high intensity magnetic separation and suspended vibration preconcentration process are easy to be industrialized, but the single processing capacity of the suspended vibration separator is limited. Therefore, the optimal flotation process was finally determined to be "strong magnetic flotation", which could obtain the index of titanium concentrate grade of 46.62%, recovery rate of 58.32% in open flotation operation and recovery rate of 43.78% in the whole process.

       

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