摘要
在实验室条件下,对南非某钛铁矿进行初步选矿试验研究,用以初步确定该类型钛铁矿可选性及选矿工艺方法。该类型原矿TFe品位20.46%,TiO_(2)品位10.08%,通过200 mT干式磁选进行分选,获得干式磁选尾矿。随后对该尾矿采用螺旋溜槽-摇床重选-湿式弱磁选工艺进行分选,最终获得TiO_(2)品位为46.4%的钛精矿。为进一步提高钛精矿品位,在实验室条件下采用浮选工艺进行分选试验,在磨矿细度为-0.074 mm含量占比为78%及粗选捕收剂用量400 g·t^(-1)和起泡剂用量100 g·t^(-1)条件下,经过一粗、一精、二扫浮选流程进行选别,最终可获得含TiO_(2)为49.1%的合格钛精矿。通过上述试验研究,该钛铁矿可采用磁-重-浮联合工艺流程,以获取合格品位要求的精矿。
Under laboratory conditions,a preliminary beneficiation test was conducted on an ilmenite in South Africa to preliminarily determine the selectivity and beneficiation process of this type of ilmenite.This type of raw ore has a TFe grade of 20.46%and a TiO_(2)grade of 10.08%.It is separated by 200 mT dry magnetic separation to obtain dry magnetic separation tailings.The tailings are processed by spiral chuteshaker gravity separation-wet weak magnetic separation process.After sorting,the titanium concentrate with TiO_(2)grade of 46.4%was finally obtained.In order to further improve the grade of the titanium concentrate,the flotation process was used to conduct a sorting test under laboratory conditions.Under the condition of the dosage of 100 g·t^(-1) of agent,the qualified titanium concentrate with TiO_(2)content of 49.1%can be finally obtained though a coarse,a fine,and a second sweep flotation process.Through the abovementioned experimental research and analysis,it is confirmed that the ilmenite adopts a feasible combined process magnetic-gravity-floating process flow,and can obtain the concentrate with qualified grade requirements.
作者
杜延雷
颜禄康
黄刚
DU Yanlei;YAN Lukang;HUANG Gang(Green Yarn Mining Co.,Ltd.,Katanga Province,Democratic Republic of Congo)
出处
《材料研究与应用》
CAS
2022年第2期303-310,共8页
Materials Research and Application
关键词
钛铁矿
磁选
重选
选矿初步试验
ilmenite
magnetic separation
gravity separation
preliminary beneficiation test
