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of the Kroll process, many methods have been developed during past decades, especially the direct reduction processes of titanium oxide such as the FFC process [8-9], MHR process [10], OS process [11-12] and EMR... materials have no physical contact with them. Titanium powders with 99% purity were obtained by this way. Furthermore, the amount of CaCl2 can be reduced, compared to the direct electrochemical reduction......
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et al [10] restructured two kinds of riblets and researched their drag reduction performance by numerical simulation. STALIO and NOBILE [11] showed the secondary vortex by using direct numerical...J. Cent. South Univ. (2017) 24: 1379-1386 DOI: 10.1007/s11771-017-3542-5 Characteristics and mechanism investigation on drag reduction of oblique riblets GU Yun-qing(谷云庆)1, FAN Tian-xing(范天星)1, MOU......
comparing with Virk’s phenomenology. The mean velocity and Reynolds stress profiles are consistent with the experimental and direct numerical simulation results. A drag reduction level of 45... by the increased viscosity, and then the drag reduction occurs. The behaviors of stresses are consistent with the experimental observations[11] and direct numerical simulation results[12-14]. 5 Conclusions......
of ironmaking processes to produce direct reduced iron (DRI) [22]. For instance, processes like FASTMET, FASTMELT and Itmk3 have been commercialized, which involve the direct reduction of composite... of reactions. It involves the direct reduction of iron oxides (Eq. (6)) as long as the internal carbon, generating the CO gas, which is in close contact with the ilmenite grains. This CO gas reduces......
, GUO Yu-feng, QIU Guan-zhou, JIANG Tao. Catalyzing the direct reduction of cold-bound pellets from titanomagnetite concentrate [J]. Journal of Central South University: Science and Technology, 2000...]. Journal of University of Science and Technology Beijing, 2012, 34(5): 512-518. (in Chinese) [19] CAO Ming-ming, ZHANG Jian-liang, XING Xiang-dong, WEN Yong-cai, WANG Chun-long. Study on direct reduction......
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was determined at different temperatures. Fig.1 Schematic diagram of apparatus 3 Results and discussion During the reduction of Bama ilmenite by graphite, an direct correlation between total mass... Reduction mechanism of natural ilmenite with graphite WANG Yu-ming(王玉明)1, 2, YUAN Zhang-fu(袁章福) 1, 3, GUO Zhan-cheng(郭占成)1, TAN Qiang-qiang(谭强强)1, LI Zhao-yi(李肇毅)2, JIANG Wei-zhong(姜伟忠)2 1......
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原;预热球团;氧化球团 中图分类号:TF551 文献标识码:A 文章编号:1672-7207(2007)03-0421-07 One-step process for direct reduction... concentrate was studied by novel one-step process for direct reduction. The effects of binder and damp mill on green balls, the process for preheated pellets with high strength and easy reduction......