1991年在清华大学原子能科学与技术博士后流动站从事博士后研究工作。
1993年博士后工作结束留任清华大学副教授。
1998年公派到加拿大阿贝塔大学化工材料系作高级访问学者并在加拿大CVT公司作产品研发工艺师。
2003年回国在武汉工程大学受聘为湖北省“***计划”特聘教授。
《稀土》杂志编委、《矿业研究与开发》杂志理事、《现代矿业》杂志专家委员会委员和《化工矿物与加工》编委委员。
近期发表的代表性论文:
[1]Tian Jun, Yin Jingqun, Chen Kaihong, Rao Guohua, Jiang Mintao, Chi Ruan. Optimisation of mass transfer in column elution of rare earths from low grade weathered crust elution-deposited rare earth ore [J]. Hydrometallurgy, 2010,103:211-214(SCI EI)
[2]CHE Xiaokui, SU Xiuzhuc, CHI Ru’an, and YU Junxia. Microwave assisted atmospheric acid leaching of nickel from laterite ore [J]. Rare Metals, 2010, 29(3):327-332 (SCI EI)
[3]TIAN Jun, CHI Ru-an, YIN Jing-qun. Leaching process of rare earths from weathered crust elution-deposited rare earth ore [J]. Transactions of Nonferrous Metals Society of China, 2010, 20:892-896(SCI EI)
[4]Tian Jun, Yin Jingqun, Chi Ruan, Rao Guohua, Jiang Mintao, Ouyang Kexian. Kinetics on leaching rare earth from the weathered crust elution-deposited rare earth ores with ammonium sulfate solution [J]. Hydrometallurgy, 2010, 101:166–170(SCI EI)
[5]Sadia Ilyas, Chi Ruan, H.N. Bhatti, M.A. Ghauri, M.A. Anwar. Column bioleaching of metals from electronic scrap [J]. Hydrometallurgy, 2010, 101:135–140(SCI EI)
[6]CHI Ru-An, HUANG Xiao-Hui, XIAO Chun-Qiao, WU Yuan-Xin, ZHANG Wen-Xue. Bioleaching of soluble phosphorus from rock phosphate containing pyrite with DES-induced Acidithiobacillus ferrooxidans [J]. Journal of Central South University of Technology, 2009 16(5):758-762(SCI EI)