Influencing Factors of Si Phase Separation from Ilmenite by Gravity Concentration Method

Abstract

Abstract: High content of Si phase is a critical problem in the ilmenite for the upgrade of titanium slag from Sichuan. The gravity concentration method was proposed to separate the SiO₂ phase from the ilmenite. Particles with different size were prepared by ball milling process, then the particles were treated by heavy machine. The separation effects of different factors (such as particle size, particle proportion and stroke) on the Si phase from ilmenite were investigated. These results indicate that the proportion of particles with less than -200 mesh (＜75 μm) increases with the grinding time extension. When the grinding time is 8 min, the proportion of particles with less than -200 mesh reaches 83.0% (mass fraction). With the increasing of the stroke, the content of SiO₂ and the recovery rate of TiO₂ increase. When the stroke is 15 mm, the content of SiO₂ decreases to 1.07% (mass fraction) from 2.46%. Three different parties are divided after gravity concentration treatment, the content relation of TiO₂ is ilmenite>middling product>tailing, and the content relation of SiO₂ is ilmenite<middling product<tailing. The minimum content of SiO₂ reaches 0.93% (mass fraction) when the proportion of particles with less than -200 mesh is 85.5% (mass fraction).

Key words: ilmenite, SiO₂ separation, TiO₂ content, gravity concentration separation, stroke, recovery

CLC Number:

TD954

LIN Yinhe, LI Jingwei, WANG Zhe, TANG Yong, CHENG Xiangkui, HUANG Xiaoli. Influencing Factors of Si Phase Separation from Ilmenite by Gravity Concentration Method[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(6): 2070-2074.

References

[1] 吴贤,张健.中国的钛资源分布及特点[J].钛工业进展,2006,23(6):8-12.
WU X, ZHANG J. Geographical distribution and characteristics of titanium resources in China[J]. Titanium Industry Progress, 2006, 23(6): 8-12 (in Chinese).
[2] 王飞旺,崔毅琦,童雄,等.钛铁矿选矿技术研究与应用[J].矿产综合利用,2016(1):1-6.
WANG F W, CUI Y Q, TONG X, et al. Research and application of beneficiation process for ilmenite[J]. Multipurpose Utilization of Mineral Resources, 2016(1): 1-6 (in Chinese).
[3] 杜雨生,马龙秋,孟庆有,等.四川攀西某难选钛铁矿重选精矿浮选试验研究[J].金属矿山,2019(4):82-87.
DU Y S, MA L Q, MENG Q Y, et al. Experimental study on the flotation of a refractory ilmenite gravity concentrate in Sichuan Panxi area[J]. Metal Mine, 2019(4): 82-87 (in Chinese).
[4] 赵文迪,章晓林,景满,等.钛铁矿选别工艺进展[J].有色金属(选矿部分),2020(2):50-56.
ZHAO W D, ZHANG X L, JING M, et al. Progress of ilmenite separation process[J]. Nonferrous Metals (Mineral Processing Section), 2020(2): 50-56 (in Chinese).
[5] SALMANI NURI O, IRANNAJAD M, MEHDILO A. Effect of surface dissolution on kinetic parameters in flotation of ilmenite from different gangue minerals[J]. Transactions of Nonferrous Metals Society of China, 2019, 29(12): 2615-2626.
[6] 马龙秋,杜雨生,孟庆有,等.钛铁矿浮选药剂及其作用机理研究进展[J].金属矿山,2018(3):7-12.
MA L Q, DU Y S, MENG Q Y, et al. Research progress on flotation reagents of ilmenite and their interaction mechanisms[J]. Metal Mine, 2018(3): 7-12 (in Chinese).
[7] 吕子虎,赵登魁,程宏伟,等.某钒钛磁铁矿尾矿资源化利用[J].有色金属(选矿部分),2020(1):55-58.
LYU Z H, ZHAO D K, CHENG H W, et al. Resource utilization of titanomagnetite tailings[J]. Nonferrous Metals (Mineral Processing Section), 2020(1): 55-58 (in Chinese).
[8] 王洪彬.攀西细粒级钛铁矿高效回收工艺研究[J].钢铁钒钛,2017,38(1):27-30.
WANG H B. Study on efficient recovery process of fine grained ilmenite in Panxi area[J]. Iron Steel Vanadium Titanium, 2017, 38(1): 27-30 (in Chinese).
[9] 张春雷.某钛铁矿矿石可选性试验研究[J].硅酸盐通报,2016,35(11):3859-3864.
ZHANG C L. Experimental research on washability of ilmenite ore[J]. Bulletin of the Chinese Ceramic Society, 2016, 35(11): 3859-3864 (in Chinese).
[10] 董文超,刘建,白旭,等.钛铁矿浮选药剂作用机理及进展[J].矿产保护与利用,2019,39(4):159-164+171.
DONG W C, LIU J, BAI X, et al. Action mechanism and progress of ilmenite flotation reagents[J]. Conservation and Utilization of Mineral Resources, 2019, 39(4): 159-164+171 (in Chinese).
[11] 舒超,罗惠华,王昌良,等.新型捕收剂ZF-02高效环保浮选微细粒级钛铁矿[J].中国矿业,2017,26(10):131-135.
SHU C, LUO H H, WANG C L, et al. High efficient environmental protection flotation of the fine ilmenite with ZF-02[J]. China Mining Magazine, 2017, 26(10): 131-135 (in Chinese).
[12] 汤优优,喻连香,陈雄.钛砂矿选矿厂尾矿中细粒级钛铁矿浮选回收试验研究[J].矿冶,2020,29(5):113-118.
TANG Y Y, YU L X, CHEN X. Research on flotation recovery of fine ilmenite from tailings of titanium placer concentrator[J]. Mining and Metallurgy, 2020, 29(5): 113-118 (in Chinese).
[13] LI F X, ZHONG H, ZHAO G, et al. Adsorption of α-hydroxyoctyl phosphonic acid to ilmenite/water interface and its application in flotation[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016, 490: 67-73.
[14] 刘青,何亚群,李红,等.混合捕收剂浮选难选钛铁尾矿[J].矿冶工程,2014,34(5):46-49.
LIU Q, HE Y Q, LI H, et al. Flotation of refractory ilmenite tailings with mixed collectors[J]. Mining and Metallurgical Engineering, 2014, 34(5): 46-49 (in Chinese).
[15] 姚金,侯英,付亚峰,等.选矿概论[M].北京:化学工业出版社,2020.
YAO J, HOU Y, FU Y F, et al. Overview of mineral processing[M]. Beijing: Chemical Industry Press, 2020 (in Chinese).
[16] 郭年琴,郝施展,郭晟.悬挂式4层摇床分选理论及流体动力学仿真分析[J].矿山机械,2015,43(10):84-91.
GUO N Q, HAO S Z, GUO S. Separation theory and fluid dynamics simulation analysis of four-layered suspended shaking table[J]. Mining & Processing Equipment, 2015, 43(10): 84-91 (in Chinese).
[17] SIVAMOHAN R, FORSSBERG E, 黄枢.摇床分选原理[J].国外金属矿选矿,1986,23(11):22-30+55.
SIVAMOHAN R, FORSSBERG E, HUANG S. Shaker separation principle[J]. Metallic Ore Dressing Abroad, 1986, 23(11): 22-30+55 (in Chinese).
[18] 陈军,周平,谭伟.给矿粒度组成对摇床分选效果的影响[J].矿冶,2014,23(5):31-34.
CHEN J, ZHOU P, TAN W. The effect of feed particle size composition on table separation[J]. Mining and Metallurgy, 2014, 23(5): 31-34 (in Chinese).