1 The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China 2 School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 3 Nano-science and Nano-technology Research Center, Materials Science and Engineering College, Shanghai University, Shanghai 200444, China
Separation and comprehensive utilization of valuable elements in Ti-bearing electric arc furnace molten slag
1 The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China 2 School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 3 Nano-science and Nano-technology Research Center, Materials Science and Engineering College, Shanghai University, Shanghai 200444, China
ժҪ A novel route to comprehensive utilization of valuable elements such as Ti, Al, Si and Mg in Ti-bearing electric arc furnace molten slag (Ti-bearing EAF slag) was proposed. The route can be expressed as a three-step process including alkali fusion, water leaching and acidolysis. Following these processes under the optimum conditions, the recovery ratios of TiO2, Al2O3, SiO2 and MgO were about 97.5, 93.5, 27.9 and 53.5%, respectively. Meanwhile, nanostructured TiO2, NaA zeolite and Mg(OH)2 fire retardant were synthesized simultaneously by using Ti-bearing EAF slag as raw materials. In addition, the photocatalytic activity of prepared nanostructured TiO2 and the adsorption property of obtained NaA zeolite were investigated. The results showed that the photodegradation efficiency of as-prepared TiO2 was 80% for rhodamine B and the adsorption efficiency of NaA zeolite was 61% for Cu2+ under the optimum conditions.
Abstract��A novel route to comprehensive utilization of valuable elements such as Ti, Al, Si and Mg in Ti-bearing electric arc furnace molten slag (Ti-bearing EAF slag) was proposed. The route can be expressed as a three-step process including alkali fusion, water leaching and acidolysis. Following these processes under the optimum conditions, the recovery ratios of TiO2, Al2O3, SiO2 and MgO were about 97.5, 93.5, 27.9 and 53.5%, respectively. Meanwhile, nanostructured TiO2, NaA zeolite and Mg(OH)2 fire retardant were synthesized simultaneously by using Ti-bearing EAF slag as raw materials. In addition, the photocatalytic activity of prepared nanostructured TiO2 and the adsorption property of obtained NaA zeolite were investigated. The results showed that the photodegradation efficiency of as-prepared TiO2 was 80% for rhodamine B and the adsorption efficiency of NaA zeolite was 61% for Cu2+ under the optimum conditions.
Yang Li Hai-yang Yu Hua-mei Yang Feng Zheng Xiong Zhang Bei-bei Xiong Qiang Zhen Hong-wei Ni. Separation and comprehensive utilization of valuable elements in Ti-bearing electric arc furnace molten slag[J].Journal of Iron and Steel Research International, 2018, 25(5): 487-496.
Yang Li Hai-yang Yu Hua-mei Yang Feng Zheng Xiong Zhang Bei-bei Xiong Qiang Zhen Hong-wei Ni. Separation and comprehensive utilization of valuable elements in Ti-bearing electric arc furnace molten slag. , 2018, 25(5): 487-496.
2018, Vol. 25 
