金属学报  1982, Vol. 18 Issue (2): 164-175

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铁、镁、钛氧化物及高镁钛铁矿的氯化动力学研究

虞宝煜

冶金工业部有色金属研究总院

THE CHLORINATION KINETICS OF OXIDES OF Fe, Mg, Ti and (Fe, Mg)TiO_3

Yu Baoyu General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing

虞宝煜. 铁、镁、钛氧化物及高镁钛铁矿的氯化动力学研究[J]. 金属学报, 1982, 18(2): 164-175.
. THE CHLORINATION KINETICS OF OXIDES OF Fe, Mg, Ti and (Fe, Mg)TiO_3[J]. Acta Metall Sin, 1982, 18(2): 164-175.

摘要 参考文献 相关文章 Metrics 全文: PDF(1478 KB)   摘要: 本文计算、绘制了 Fe-Mg-Ti-O_2-Cl_2的氯化热力学平衡相图(1123K),分析了由高镁钛铁矿(Fe,Mg)TiO_3(≈6%MgO)对铁、镁氧化物选择氯化的可能性.采用 CO-Cl_2和 C-Cl_2在500—950℃间研究了铁、镁、钛纯氧化物及钛铁矿的氯化动力学.试验结果表明,纯氧化物的氯化过程受化学反应控制,钛铁矿氯化受灰层扩散控制.由于热力学和动力学条件的限制,以固体碳作还原剂沸腾选择氯化高镁钛铁矿时,FeO 和 MgO 的选择氯化率不可能很高.本文还对试验中发现的“低温效应”和 FeCl_3的催化作用进行了讨论. Abstract：The equilibrium diagram for Fe-Mg-Ti-O_2-Cl_2 system at 1123K was construct- ed on the basis of thermodynamic calculation and then an attempt was made of the selective chlorination to yield synthetic rutile from ilmenite with high Mg content (Fe,Mg)TiO_3.The chlorination kinetics of Fe_2O_3,MgO,TiO_2 and ilmen- ite has been mainly studied using Cl_2-CO and Cl_2-C at 400—950℃.It was resulted that the chlorination process of simple oxide is under chemical reaction control,while that of ilmenite is dependent on the ash layer diffusion.It seems to be difficult to get a high selectivity of FeO,MgO to TiO_2 in the fluidized-bed chlorination of high Mg ilmenite (Fe,Mg)TiO_3 with solid carbon reductant owing to the thermodynamic and kinetic limitations.The“low temperature effect”and catalysis of FeCl_3 found in the chlorination process were also discussed. 收稿日期: 1982-02-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 虞宝煜 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1982/V18/I2/164 1 #12 2 Neuschuetz,D.;Lodh,K.S.;Knacke,O.,Erzmetall,27(1974) ,371． 3 Neuschuetz,D.;Mann,E.;Knacke,O.,ibid.,30(1977) ,464． 4 Kharkar,D.P.;Patel,C.V.,J.Sci.Ind.Res.,17B(1958) ,№9,367． 5 Reed,T.B.,Free Energy of Formation of Binary Compounds,MIT Press,Cambridge,Mass,1971． 6 JANAF Thermochemical Tables,Nat.Stand.Ref.,Data Ser.,Nat.Bur.Stand.(US),1966． 7 #12 8 Habashi,F.,Principles of Extractive Metallurgy,Vol.1,Gordon & Breach,New York,1969,p.158． 9 #12 10 #12 11 #12 12 中沢元一;冈原义旦,日本鉱业会志,74 (1958) ,№837,183． 13#12 14#12 15 #12 16#12 17 Lendeberg,A.;Hoataon C.L.;Block,F.E.,Metall.Trans.,3(1972) ,517． 18#12 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed