Abstract:In order to explore the process mineralogy characteristics of Baima vanadium-titanium magnetite from Panxi area, some advanced analysis methods including chemical analysis, optical microscope (OM), scanning electron microscope (SEM), automated mineral identification and characterization system (AMICS) were employed to deeply study the ore of Baima vanadium-titanium magnetite. The results showed that the main minerals of ore included titanomagnetite, ilmenite, anorthite, diopside and serpentine. The mass fraction of Fe, Ti and V in ore was 25.05%, 3.46% and 0.13%, respectively. These elements could be comprehensively recycled and utilized. The proportion of iron in the form of titanomagnetite was 74.13%, while 13.16% of iron existed in the form of iron-containing silicate. 63.72% of titanium existed in the form of independent ilmenite mineral and ilmenite (chadacryst), and 33.67% of titanium existed in titanomagnetite in the form of isomorphism. The titanomagnetite, ilmenite and sulfur minerals mainly existed in medium grains, while the disseminated grain size of most ilmenite (chadacryst) and magnesium aluminate spinel (chadacryst) was particle (less than 0.010 mm). 13.16% of iron in ore existed in silicate as well as titanium-containing iron ore (chadacryst) and magnesium aluminate spinel (chadacryst) in most titanomagnetite, which was the main factor influencing the grade of iron concentrate.
[1] 宋谢炎,张成江,胡瑞忠,等.峨眉火成岩省岩浆矿床成矿作用与地幔柱动力学过程的耦合关系[J].矿物岩石,2005,25(4):35-44. SONG Xieyan,ZHANG Chengjiang,HU Ruizhong,et al.Genetic links of magmatic deposits in the Emeishan large igneous province with dynamics of mantle plume[J].Mineralogy and Petrology,2005,25(4):35-44. [2] Zhong H,Zhu W G.Geochronology of layered mafic intrusions from the Pan-xi area in the Emeishan large igneous province,SW China[J].Mineralium Deposita,2006,41(6):599-606. [3] 谭其尤,陈波,张裕书,等.攀西地区钒钛磁铁矿资源特点与综合回收利用现状[J].矿产综合利用,2011(6):6-10. TAN Qiyou,CHEN Bo,ZHANG Yushu,et al.Characteristics and current situation of comprehensive utilization of vanadium titano-magnetite resources in Panxi region[J].Multipurpose Utilization of Mineral Resources,2011(6):6-10. [4] 朱俊士.中国钒钛磁铁矿选矿[M].北京:冶金工业出版社,1995. [5] 徐丽君,李亮,陈六限,等.攀西地区钒钛磁铁矿综合回收利用现状及发展方向[J].四川有色金属,2011(1):1-5. XU Lijun,LI Liang,CHEN Liuxian,et al.Characteristics and current situation of comprehensive utilization of vanadium titano-magnetite resources in Panxi region[J].Sichuan Nonferrous Metals,2011(1):1-5. [6] 张晓琪,张加飞,宋谢炎,等.斜长石和橄榄石成分对四川攀枝花钒钛磁铁矿床成因的指示意义[J].岩石学报,2011,27(12):3675-3688. ZHANG Xiaoqi,ZHANG Jiafei,SONG Xieyan,et al.Implications of compositions of plagioclase and olivine on the formation of the panzhihua V-Ti magnetite deposit, Sichuan Province[J].Acta Petrologica Sinica,2011,27(12):3675-3688. [7] ZHANG X Q,SONG X Y,CHEN L M,et al.Fractional crystallization and the formation of thick Fe-Ti-V oxide layers in the Baima layered intrusion,SW China[J].Ore Geology Reviews,2012,49(8):96-108. [8] 钟祥,郗爱华,葛玉辉,等.攀西白马岩体的矿物结晶顺序与钒钛磁铁矿成因[J].矿物学报,2018,38(4):449-461. ZHONG Xiang,XI Aihua,GE Yuhui,et al.Crystallization sequence of minerals and origin of the Fe-Ti-V oxide ores from the Baima layered intrusion in the Panxi area[J].Acta Mineralogica Sinica,2018,38(4):449-461. [9] PANG K N,ZHOU M F,Lindsley D,et al.Origin of Fe-Ti oxide ores in mafic intrusions:Evidence from the Panzhihua Intrusion,SW China[J].Journal of Petrology,2008,49(2):295-313. [10] 许承宝,张一敏,刘涛,等.辽西某钒钛磁铁矿工艺矿物学研究[J].有色金属(选矿部分),2018(3):1-5,41. XU Chengbao,ZHANG Yimin,LIU Tao,et al.Process mineralogy of vanadium-titanium magnetite ore from western Liaoning[J].Nonferrous Metals(Mineral Processing Section),2018(3):1-5,41.