Efficient Recovery of Ilmenite from Vanadium Bearing Titanomagnetite in Panxi Area
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摘要: 针对攀西地区某钒钛磁铁矿选铁尾矿采用常规“强磁—强磁—浮选”流程回收钛铁矿时,回收率低、选钛成本高、粒度偏细不利于深加工等问题,对攀西钒钛磁铁矿选铁粗粒尾矿采用“强磁—重选—电选”、选铁细粒尾矿采用“强磁—强磁—浮选”流程进行钛铁矿高效回收工艺研究。试验表明能获得TiO2品位47.40%、回收率61.84%的钛精矿,钛铁矿相对选铁尾矿的回收率、单位钛精矿成本和0.074 mm以下细粒级含量较常规“强磁—强磁—浮选”流程分别提高约14个百分点、降低约50元与降低约20个百分点,更适宜生产硫酸法钛白和酸溶性高钛渣。Abstract: Aiming to solve the problems of low recovery rate,high cost and smaller particle size of products in recovering ilmenite from tailings of a vanadium bearing titanomagnetite in Panxi area via conventional process of strong magnetic separation-strong magnetic separation-flotation,an efficient process that recover ilmenite from coarse and fine tailings of vanadium bearing titanomagnetite separately by procedures of strong magnetic separation-gravity separation-electric separation and strong magnetic separation-strong magnetic separation-flotation was investigated.The results show that the ilmenite concentrate with 47.40% of TiO2 content and 61.84% of recovery rate can be obtained.Compared with the conventional process of strong magnetic separation-strong magnetic separation-flotation,the ilmenite recovery rate of the tailings by the proposed process increases by about 14 percentage points and the cost per unit ilmenite concentrate as well as the content of particles less than 0.074 mm is respectively decreased by 50 RMB and 20 percentage points.The obtained products are more suitable for preparation of titanium white pigment by sulphate process and production of acid-soluble high titanium slag.
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Key words:
- vanadium bearing titanomagnetite /
- ilmenite /
- concentrate /
- recovery rate
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