Yan Fangxing, Zhang Qifu, Cao Chaozhen, Hou Jian, Li Naiyao, Lan Jiran. Experimental Study on Direct Reduction of Vanadium and Titanium-bearing Sea Sand Ore Pellets in Gas-based Shaft Furnace[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(4): 7-11. doi: 10.7513/j.issn.1004-7638.2020.04.002
Citation:
Yan Fangxing, Zhang Qifu, Cao Chaozhen, Hou Jian, Li Naiyao, Lan Jiran. Experimental Study on Direct Reduction of Vanadium and Titanium-bearing Sea Sand Ore Pellets in Gas-based Shaft Furnace[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(4): 7-11. doi: 10.7513/j.issn.1004-7638.2020.04.002
Yan Fangxing, Zhang Qifu, Cao Chaozhen, Hou Jian, Li Naiyao, Lan Jiran. Experimental Study on Direct Reduction of Vanadium and Titanium-bearing Sea Sand Ore Pellets in Gas-based Shaft Furnace[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(4): 7-11. doi: 10.7513/j.issn.1004-7638.2020.04.002
Citation:
Yan Fangxing, Zhang Qifu, Cao Chaozhen, Hou Jian, Li Naiyao, Lan Jiran. Experimental Study on Direct Reduction of Vanadium and Titanium-bearing Sea Sand Ore Pellets in Gas-based Shaft Furnace[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(4): 7-11. doi: 10.7513/j.issn.1004-7638.2020.04.002
Beijing Shougang International Engineering Technology Co., Ltd., Beijing Metallurgical 3-D Simulation Design Engineering Technology Research Center, Beijing 100043, China
To explore the feasibility of direct reduction of vanadium and titanium bearing sea sand ore in gas-based shaft furnace,the oxidized pellets of the ore were obtained by roasting at 1 250 ℃ for 20 min,with compressive strength of 2 099 N,reduction index（RI） of 77.8%,reduction dusting index（RDI） at low temperatures of 92%,reduction swell index（RSI） of 7.5% and reduction cementation index of 10.4%,respectively.The reduction rate of the pellets at 950 ℃ for 180 min is 89.4% with H2/CO=1.5,92% with H2/CO=6 and 96% with pure H2 as the atmosphere,respectively.All the indexes of the pellets are excellent and can satisfy the requirements of the gas-based shaft furnace.
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