攀西橄辉岩型低品位钛铁矿振动脉动与脉动高梯度磁选工艺对比
Comparison between vibrating-pulsating and pulsating high gradient magnetic separation processes for separating olivine-type low grade ilmenite ore from Panxi area
吴连军 1陈禄政 1吴宁 2熊涛 3张铂华 1曾剑武 1刘潇倩1
作者信息
- 1. 昆明理工大学 国土资源工程学院,昆明 650093
- 2. 昆明理工大学 国土资源工程学院,昆明 650093;攀钢集团研究院有限公司 钒钛资源综合利用国家重点实验室,攀枝花 617000
- 3. 昆明理工大学 国土资源工程学院,昆明 650093;赣州金环磁选科技装备股份有限公司 江西省磁选装备重点实验室,赣州 341000
- 折叠
摘要
随开采深度的增加,攀西钛铁矿中易泥化、与钛铁矿磁性差异较小的橄辉岩型钛铁矿含量增多,降低了脉动高梯度磁选机的分选指标,使后续浮选过程中合格钛精矿的生产成本和难度增大.针对这一问题,本文开展振动脉动高梯度磁选与脉动高梯度磁选橄辉岩型低品位钛铁矿的对比试验研究.结果表明:在钛粗精矿的TiO2品位为9.00%、-0.074 mm粒级产率为57.60%的条件下,采用SLon-100周期式脉动高梯度磁选机分选时,所得磁性精矿的TiO2品位为15%～17%,分选精度上限较低;采用SLon-Z-100周期式振动脉动高梯度磁选机分选时,所得磁性精矿的TiO2品位为20%～22%,分选精度上限明显提高.在相近的磁性精矿TiO2品位(15%)或TiO2回收率(73%)条件下,振动脉动高梯度磁选工艺的各项分选指标均明显优于脉动高梯度磁选工艺,表明磁介质振动动态捕获模式具有更高的捕获选择性.
Abstract
With the increase of mining depth,the contents of olivine and diopside in the ilmenite ore in Panxi area increase.The gangue minerals such as olivine and diopside are easy to be slimed and have close magnetic susceptibility with ilmenite,which deteriorate the separation performances of pulsating high gradient magnetic separation(HGMS)and increase the cost and difficulty for production of qualified titanium concentrate in the subsequent flotation process.To solve this problem,the vibrating-pulsating and pulsating HGMS experiments were comparatively carried out for separating the olivine-type low grade ilmenite ore.The results show that,when treating an ore sample with TiO2 grade at 9.00%and-0.074 mm size fraction at 57.60%,the SLon-100 cyclic pulsating HGMS separator produces a relatively low selectivity with TiO2 grade in concentrate at only 15%-17%,while the SLon-Z-100 cyclic vibrating-pulsating HGMS separator has an obviously higher selectivity with TiO2 grade reaching 20%-22%.In addition,comparing their separation performances under close TiO2 grade at around 15%or under close recovery at around 73%,the vibrating-pulsating HGMS possesses much better separation indexes than pulsating HGMS,indicating that the dynamic capture model realized by vibrating matrix has a higher selectivity of separation.
关键词
橄辉岩型低品位钛铁矿/振动脉动高梯度磁选/脉动高梯度磁选/对比试验Key words
low grade and olivine-type ilmenite ore/vibrating-pulsating high gradient magnetic separation/pulsating high gradient magnetic separation/experimental comparison引用本文复制引用
基金项目
钒钛资源综合利用国家重点实验室开放基金(2022P4FZG01A)
国家自然科学基金(U52264029)
国家自然科学基金(51874152)
出版年
2024
NETL
NSTL
维普
万方数据