摘要:
红格某钒钛磁铁矿中橄榄石和其蚀变矿物的含量较高,矿石的结构构造和矿物嵌布特征较复杂,矿物种类繁多,钛磁铁矿和钛铁矿的嵌布粒度粗细不均,由于橄榄石比磁化系数比其他脉石高,可浮性也比其他脉石好,选矿难度很大.针对该矿石特点,选铁过程中重点考虑如何确定经济合理的抛尾粒度,最大限度地多碎少磨,降低生产成本;选钛过程中重点研究一种能较好处理含橄榄石较多的钛铁矿浮选工艺流程和药剂制度,将橄榄石和它蚀变的矿物对钛铁矿浮选的影响减至最小,最终采用“原矿粗粒抛尾一阶磨阶选(选铁)一强磁预选一浮选(选钴、钛)”的工艺流程进行试验并取得了良好的试验室指标,结果为:铁精矿品位56.23%、回收率64.94%,钛精矿品位46.38%、回收率20.13%.试验成果为评价该铁矿资源开发利用的可行性提供了选矿技术支持.
关键词:
-
钒钛磁铁矿
/
-
粗粒抛尾
/
-
磁选
/
-
浮选
Abstract:
A vanadium-titanium magnetite in Hong Ge has intricate structure and many types of ore.The high content of olivine and other altered mineral,which has bigger specific magnetization coefficient and better floatability than other gangue,and the uneven disseminated grain size among titanic magnetite and ilmenite makes it difficult to separate effectively.On ore properties,how to ascertain economical and reasonable fineness of discarding coarse tailings and apply more broken and less grinding is important in the processing of iron dressing and how to find a flotation process and medicament system is significant on the processing of titanium dressing.A combined process of discarding coarse tailings-grinding-weak magnetic separation-strong magnetic pre-concentration-flotation was applied to this ore and obtained the titanium concentrate with grade 46.38% and the total recovery 20.13% and the iron concentrate with grade 56.23% and the total recovery 64.94%.Finally,the experimental results provide the feasibility of using the vanadiumtitanium magnetite resources with technical support.
下载: