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编号:1672-7207(2011)12-3637-08 Beneficiation of high phosphorus limonite ore by sodium-salt-added reductive roasting-magnetic flocculation process BAI Shao-jun, WEN Shu-ming, LIU Dian-wen, ZHANG Wen-bin..., a new process for up-grading and dephosphorizing of high phosphorus limonite ore was developed based on the investigation on properties of mineralogy. The microstructure characteristics of iron......
in stone coal will be converted to soluble sodium salt [2]. After roasting, the calcine is leached with low acidity solution. Due to the simple flow and high recovery of vanadium, this technology has... processes have been proposed to recover vanadium from stone coal, such as oxidizing roasting-alkaline leaching [3], dilute sulfuric acid leaching [4], calcium salt roasting-sulfuric acid leaching [5......
on leaching molybdenum at high-pressure from calcium molybdenum [J]. China Molybdenum Industry, 2005, 29(6): 19-21. (in Chinese) [7] POURBAIX M. Atlas of Electrochemical Equilibria in Aqueous Solutions [M... Thermodynamic analysis on sodium carbonate decomposition of calcium molybdenum XIA Wen-tang(夏文堂), ZHAO Zhong-wei(赵中伟), LI Hong-gui(李洪桂) School of Metallurgical Science and Engineering, Central......
, VAHIDI E. Leaching of vanadium from LD converter slag using sulfuric acid [J]. Hydrometallurgy, 2010, 102: 14-21. [21] LI X S, XIE B. Extraction of vanadium from high calcium vanadium slag using direct... were formed and vanadium mainly existed in the forms of CaV2O5 and Ca2V2O7. The formation mechanism of calcium vanadates in the molten vanadium bearing slag was explained. The XRD and XPS results implied......
Science, 2005, 14(4): 54-56. (in Chinese) [19] YANG Jing-ling, JIN Xin. A new way of recovering vanadium from iron/vanadium slag [J]. Journal of Beijing University of Chemical Technology, 2007, 30(3... Pressure acid leaching of black shale for extraction of vanadium LI Min-ting(李旻廷), WEI Chang(魏 昶), FAN Gang(樊 刚), LI Cun-xiong(李存兄),DENG Zhi-gan(邓志敢), LI Xin-bin(李兴彬) Faculty of Metallurgical......
as shown in Table 1. The result shows that the content of impurity (eg. iron, calcium or silicon ion) is lower than 0.1%, which is very important to obtain γ-Al2O3 with high catalyst property... Synthesis of crystalline γ-Al2O3 with high purity YI Jian-hong(仪建红)1, SUN You-yi(孙友谊)1, GAO Jian-feng(高建峰)2, XU Chun-yan(徐春彦)2 1. College of Materials Science and Engineering, North......
the condition of temperature 1 873 K, chamber pressure 0.6-0.8 Pa, holding time 1 h. Both experimental data and calculation results agree that at high phosphorus concentration, phosphorus removal is quite dependent on high chamber pressure while it becomes independent on low chamber pressure. The reason is that phosphorus evaporates from molten silicon as gas species P2 at a relatively high......
J. Cent. South Univ. (2019) 26: 567-576 DOI: https://doi.org/10.1007/s11771-019-4028-4 Permeability modeling of self-healing due to calcium carbonate precipitation in cement-based materials... to calcium carbonate precipitation in cement-based materials with mineral additives was studied in this work. The parameters of calcium carbonate precipitation during self-healing were simulated......
to higher content of Si, Ti and Ca and may have an adverse effect on the diffusion of vanadium, oxygen, sodium, etc. It is well known that high content of silicon and calcium in vanadium slag have..., ZHOU Zong-quan, PAN Ping, SUN Chao-hui. Preparation V2O5 from low grade vanadium- bearing slag of high calcium and high phosphor [J]. Ferro-alloy, 2007, 195(4): 18-23. (in Chinese) [9] ZHANG Hui......
Zhi-jun. Behavior and effect of FeO during the smelting processing of high titanium slag[J]. Vanadium and Titanium, 1996(3): 21-23. [13] 赵志军, 马恩泉, 连玉锦. Al2O3在钛渣中的行为[J]. 钢铁钒钛, 2002, 23(3): 36-38. ZHAO...; Phase diagram of TiO2-Ti2O3-FeO ternary slag 表1 高钛渣的化学成分 Table 1 Chemical composition of high titanium slag (mass fraction, %) 表2 TiO2-Ti2O3-FeO三元渣系黏度模拟方案 Table 2 Simulation......
