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不同底吹位置对VD精炼脱碳过程的影响耿佃桥1,雷洪1,赫冀成1,黄健2,李秉强2(1.辽宁省沈阳市东北大学材料电磁过程研究教育部重点实验室2.本溪钢铁公司,辽宁本溪 117000)摘 要:采用数值模拟方法研究了VD精炼过程中不同底吹位置对钢液流场及脱碳过程的影响.研究结果表明:双底吹脱碳效果最好,偏心底吹次之,中心底吹最差;在偏心底吹下,当底吹位置距钢包中心0.4R~0.5R时脱碳效果最好,终点碳的质量分数最低为39×10-6;在双底吹条件下,当底吹位置距钢包中心0.50R~0.65R时脱碳效果最好,终点碳的质......
Extraction of niobium, yttrium, and cerium from a low-grade niobium-bearing ore by roasting(NH4)2SO4-Na2SO4-H2SO4 systemWen-Cheng Gao,Jian-Kang Wen,Biao Wu,He ShangNational Engineering Laboratory...-bearing ore by the roasting(NH4)2SO4-Na2SO4-H2SO4 system was experimentally studied. The influences of various factors,such as roasting temperature, roasting time, mass ratio of agents-to-ore......
by a step solid-phase in an argon with LiOH·H2O as lithium source and Mn2O3 (roasting EMD at 680 ℃ for 6 h) as manganese source. The mixture of Mn2O3 and LiOH·H2O was analyzed by thermogravimetric... temperature of LiMnO2 should be controlled at above 500 ℃. The optimum condition for preparing LiMnO2 is as follows: mole ratio of lithium to manganese 1.03, roasting temperature 600 ℃, roasting time......
Thermodynamics and kinetics of alumina extraction from fly ash using an ammonium hydrogen sulfate roasting methodRuo-chao Wang,Yu-chun Zhai,Zhi-qiang NingSchool of Materials and Metallurgy, Northeastern University摘 要:A novel method was developed for extracting alumina(Al2O3)from fly ash using an ammonium hydrogen sulfate(NH4HSO4)roasting process......
类号:TF821 文献标志码:A Roasting process of mixture of high ferric bauxite and ammonium bisulfate XIN Hai-xia, WU Yan, LIU Shao-ming, ZHAI Yu-chun (School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract: A novel process of roasting high-iron bauxite using ammonium bisulfate was proposed to overcome the defects......
:1672-7207(2010)03-0852-07 Desulfuration of high sulfur bauxite by oxidation roasting HU Xiao-lian, CHEN Wen-mi, XIE Qiao-ling (School of Metallurgical Science and Engineering, Central South University, Changsha 410083,China) Abstract: Using the two kinds of ore from Henan province, the oxidation roasting process of the desulfuration from the diasporic high sulfur bauxite was studied......
Processing and Bioengineering,Central South University摘 要:Consolidation in calcines is a common problem in the oxygen-enriched air roasting of refractory gold.... Oxidation of the pyrite and decomposition of the dolomite and muscovite mainly occurred at the initial stage of oxygen-enriched air roasting. Calcium was confirmed to be essential to the consolidation......
Trans. Nonferrous Met. Soc. China 24(2014) 848-853 Reaction kinetics of roasting high-titanium slag with concentrated sulfuric acid Li-li SUI1,2, Yu-chun ZHAI1 1. School of Materials and Metallurgy... of roasting high-titanium slag with concentrated sulfuric acid was proposed to prepare titanium dioxide, and the roasting kinetics of titania was studied on the basis of roasting process. The effects......
and waste discharge. A method of microwave roasting was adopted for dechlorination of CuCl residue. A 1.5 kW microwave roasting equipment with dust collection and tail gas adsorption systems was set up... rate is as high as 90%, while that with conventional heating is only 60%-80%. The phase change of the roasting process investigated with X-ray diffraction verifies that CuCl in CuCl residue is removed......
: leaching kinetic; multi-metal copper alloy; roasting 1 Introduction At present, the economical and environmental requirements impel the development of effective and inexpensive methods... of Ni-Cu Matte in the acid-oxygen pressure leaching process at Implasa platiunum. Roasting copper slag with ferric sulfate [14] and sulfuric [15] followed by acidic leaching were also reported......