Abstract：The confirmation of phase transformation is one of key points to analyze the acidolysis mechanism of titanium slag and improve the acidolysis process.The content and morphology changes of the main phases,and the content and occurrence changes of Ti and Si in the acidolysis of 74 titanium slag were comprehensively studied by chemical analysis,X-ray diffraction (XRD) analysis,mineral liberation analysis and scanning electron microscope (SEM) morphology analysis.The results showed that the titanium slag was mainly composed of anosovite and augite.The content of anosovite decreased gradually and the content of augite increased gradually during acidolysis.In the reaction process,the acid permeated into the surface and internal pores and cracks of anosovite particles in the form of diffusion to decompose the anosovite.There was no significant change in the morphology of augite before and after acidolysis,but its liberation degree gradually increased along with the reaction.In titanium slag,the Ti element mainly existed in anosovite,while the Si element mainly existed in augite,and partly existed in anosovite and the mixture of anosovite and augite.In the reaction,the Ti element mainly was migrated from anosovite to the TiOSO4,and partially migrated to the mixture of anosovite and augite;the Si element was migrated and mainly enriched in the augite and the mixture of anosovite and augite.
崔佳娜,任慧莉.我国钛白粉生产工艺技术的发展及比较[J].稀有金属与硬质合金,2013,41(4):14-17.CUI Jiana,REN Huili.Development and comparison of titanium white production technology in China[J].Rare Metals and Cemented Carbidies,2013,41(4):14-17.
[2]
丁浩,刘玉芹,周红.中国钛白粉生产环境效应及可持续发展[J].地学前缘,2014,21(5):294-301.DING Hao,LIU Yuqin,ZHOU Hong.The effect of resources and environment on titanium dioxide production and countermeasures for sustainable development in China[J].Earth Science Frontiers,2014,21(5):294-300.
[3]
唐振宁.钛渣的生产概况及在钛白粉中的使用趋向[J].中国涂料,2006(10):53-56.TANG Zhenning.Manufacturing status of titanium slag and use trend in titanium powder[J].China Coatings,2006(10):53-56.
[4]
宫伟,雷霆,邹平.钛渣的生产概况和发展趋势[J].云南冶金,2009,38(6):21-25.GONG Wei,LEI Ting,ZOU Ping.Survey and development trend of titanium slag production[J].Yuannan Metallurgy,2009,38(6):21-25.
[5]
赵志军,马恩泉,连玉锦.Al2O3在钛渣中的行为[J].钢铁钒钛,2002(3):36-38,43.ZHAO Zhijun,MA Enquan,LIAN Yujin.Behavior of Al2O3 in titanium slag[J].Iron Steel Vanadium Titanium,2002(3):36-38,43.
[6]
周林,雷霆.世界钛渣研发现状与发展趋势[J].钛工业进展,2009,26(1):26-30.ZHOU Lin,LEI Ting.Research actuality and developing trend of titanium slag in the world[J].Titanium Industry Progress,2009,26(1):26-30.
[7]
吕改改,雷霆,周林,等.电炉冶炼钛渣的特点及安全生产[J].钛工业进展,2011,28(6):43-46.LU Gaigai,LEI Ting,ZHOU Lin,et al.Analysis of the characteristic and safety measure of titanium slag smeltingin electric arc furnace[J].Titanium Industry Progress,2011,28(6):43-46.
[8]
胡克俊,锡淦,姚娟,等.国外钛渣生产技术现状[J].稀有金属快报,2006(11):1-7.HU Kejun,XI Gan,YAO Juan,et al.Titanium slag state of technology in the world[J].Rare Metals Letters,2006(11):1-7.
[9]
蒙钧.我国钛渣产业现状和展望[J].钛工业进展,2014,31(5):6-9.MENG Jun.The current situation and prospect of titanium slag production in China[J].Titanium Industry Progress,2014,31(5):6-9.
[10]
肖军.硫酸法钛白与攀枝花钛渣产业发展浅析[J].中国有色冶金,2019,48(5):31-35,43.XIAO Jun.A brief analysis of the industry development of titanium dioxide by sulfuric acid method and Panzhihua titanium slag[J].China Nonferrous Metallurgy,2019,48(5):31-35,43.
[11]
雷霆,米家蓉,周林,等.电炉钛渣相组成和除杂机制研究[J].稀有金属,2007(S1):93-97.LEI Ting,MI Jiarong,ZHOU Lin,et al.Study on phase compositions and removal impurities mechanism of electro-titanium slag[J].Chinese Journal of Rare Metals,2007(S1):93-97.
[12]
罗金华,李俊翰,孙宁,等.攀枝花电炉钛渣工艺矿物学研究[J].矿物岩石,2016,36(2):11-16.LUO Jinhua,LI Junhan,SUN Ning,et al.Study of technological mineralogy on electro-titanium slag in Panzhihua mining area[J].Mineralogy and Petrology,2016,36(2):11-16.
[13]
张树立,程晓哲,胡鸿飞.酸溶性钛渣酸解工艺研究[J].钢铁钒钛,2003(1):39-45.ZHANG Shuli,CHENG Xiaozhe,HU Hongfei.Study on digestion of acid-dissolved titanium slag[J].Iron Steel Vanadium Titanium,2003(1):39-45.
[14]
杨成,邹建新.酸溶性钛渣制取钛白的酸解动力学[J].矿产综合利用,2007(6):24-26.YANG Cheng,ZOU Jianxin.Kinetic for acidolysis of titanium slag during production of titanium dioxide[J].Multipurpose Utilization of Mineral Resources,2007(6):24-26.
[15]
王斌,程晓哲,韩可喜,等.酸溶性钛渣酸解性能研究[J].钢铁钒钛,2009,30(2):6-11.WANG Bin,CHENG Xiaozhe,HAN Kexi,et al.Research of acidolysis performance of acid-soluble titanium slag[J].Iron Steel Vanadium Titanium,2009,30(2):6-11.
[16]
陈菓,陈晋,彭金辉,等.高温焙烧高钛渣工艺的试验研究[J].轻金属,2009(2):46-48.CHEN Guo,CHEN Jin,PENG Jinhui,et al.Experimental investigation on high temperature roasting of high titanium slags[J].Light Metals,2009(2):46-48.
[17]
张力,李光强,张武.低品位高钛渣中钛组分制备金红石[J].中国有色金属学报,2011,21(10):2317-2322.ZHANG Li,LI Guangqiang,ZHANG Wu.Synthesis of rutile from high titania slag by pyrometallurgicalroute[J].Transactions of Nonferrous Metals Society of China,2011,21(10):2317-2322.
[18]
张溅波,缪辉俊,程晓哲,等.攀枝花钛渣和钛精矿在氧化还原改性-酸浸工艺中对比研究[J].稀有金属,2016,40(4):385-392.ZHANG Jianbo,MIAO Huijun,CHENG Xiaozhe,et al.Contrastive study on processes of redox modification-acid leaching of Panzhihua Ti-slag and ilmenite[J].Chinese Journal of Rare Metals,2016,40(4):385-392.
[19]
高健.钛精矿连续酸解过程中物相变化特征探讨[J].冶金分析,2019,39(12):8-15.GAO Jian.Discussion on phase transformation characteristics of titanium concentrate during continuous acidolysis[J].Metallurgical Analysis,2019,39(12):8-15.
