金属学报  1982, Vol. 18 Issue (2): 176-186

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纯铁液中Ce-O,Nd-O平衡常数的测定

韩其勇;刘士伟;牛红兵;唐志伟

北京钢铁学院;北京钢铁学院;北京钢铁学院;北京钢铁学院

DETERMINATION OF EQUILIBRIUM CONSTANT OF Ce-O OR Nd-O IN LIQUID IRON

Han Qiyong;Liu Shiwei;Niu Hongbing;Tang Zhiwei Beijing University of Iron and Steel Technology

韩其勇;刘士伟;牛红兵;唐志伟. 纯铁液中Ce-O,Nd-O平衡常数的测定[J]. 金属学报, 1982, 18(2): 176-186.
, , , . DETERMINATION OF EQUILIBRIUM CONSTANT OF Ce-O OR Nd-O IN LIQUID IRON[J]. Acta Metall Sin, 1982, 18(2): 176-186.

摘要 参考文献 相关文章 Metrics 全文: PDF(1207 KB)   摘要: 自射线照相表明,铁液中的 Ce,Nd 与 MgO,CaO 坩埚均有明显的作用.在保证Ce,Nd 与坩埚充分作用以达到平衡的条件下,应用放射性同位素~(141)Ce,~(147)Nd 及有机电解液电解法测定了铁液中溶解之 Ce,Nd 含量.用 ZrO_2(MgO)管组成的固体电解质电池测定了铁液中溶解氧的活度.计算出1550—1650℃范围内 Ce-O,Nd-O 平衡常数.对于反应 Ce_2O_(3(s))=2[Ce]+3[O]△G*_(Ce_2O_3)451150-161.68TlgK_(Ce_2O_3)=-(98611)/T+35.34对于反应 Nd_2O_3=2[Nd]+3[O]△G*_(Nd_2O_3)=375010-123.7TlgK_(Nd_2O_3)=-(81970)/T+27.04Nd 溶解于铁液的标准自由能 Nd(1)=[Nd]_(1%)△G*_(Nd)=19790-30.40Tlgγ*_(Nd)=(4326.1)/T-4.154 Abstract：Autoradiographs have shown that there is an obvious reaction between Ce and Nd in liquid iron and MgO,CaO crucible wall.For reaching the Ce-O, Nd-O equilibrium,a long smelting period and the adding of rare earth elements in several batches were needed to ensure the full reaction between the rare earth elements in melt and the crucible wall.The dissolved Ce or Nd content in iron was measured by means of radioactive isotopes ~(141)Ce or ~(147)Nd together with electrolysis in the organic electrolyte of samples.The oxygen activity was measured by solid electrolyte sensors made of ZrO_2(MgO) tube. Ce_2O_(3(s))=2[Ce]+3[O] △G*_(Ce_2O_3)=451150-161.68T lgK_(Ce_2O_3)=-(98611)/T+35.34 Nd_2O_3=2[Nd]+3[O] △G*_(Nd_2O_3)=375010-123.7T lgK_(Nd_2O_3)=-(81970)/T+27.04 The standard free energy of dissolution of Nd in liquid iron: Nd_(1)=[Nd]1% △G=19790-30.40T lgγ*_(Nd)=(4326.1)/T-4.154. 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 韩其勇 刘士伟 牛红兵 唐志伟 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1982/V18/I2/176 1#12 2 Hitchon,J.W.F.;Chaillou,A.;Olette,M.,Report IRSID(1966) ,Cerium and Lanthanum as Deoxidizers and Desulfurizers in Liquid Iron. 3 Fischer,W.A.;Bertram.H.,Arch.Eisenhuettenwes.,44(1973) ,87,97． 4 石川遵平;井上博文;三本木贡治,东北大学选鉱制炼研究所,29(1973) ,193． 5 Elgammal,T.;Dehl,W.;Lorenz,L.,Proceedings of the 4th International Conference on Vacuum Metallurgy,Tokyo,1973,Iron Steel Inst,Jpn.,Tokyo 1974,Sect.2,p.125． 6 Janke,D.;Fischer,W.A.,Arch Eisenhuettenwes:,49(1978) ,425． 7 王常珍;王福珍;杜英敏;张小平,金属学报,16(1980) ,1,83． 8#12 9 Vahed,A.;Kay,D.A.R.,Metall.Trans.,7B(1976) ,375． 10 Fruehan,R.J.,Metall.Trans.,5(1974) ,345． 11 北京钢铁学院物化教研室同位素教研组,金属学报,13(1977) ,202． 12 韩其勇;方克明;吴卫江等,单一稀土夹杂的组成与形态(待发表). 13 Janke,D.;Fischer,W,A.,Arch.Eisenhuettenwes.,48(1977) ,311． 14 韩其勇;吴卫江;方克明;霍成章;周小龙,中日钢铁学术会议,第一届炼钢学术会议会议报告,北京,1981,p.25． 15 Janke,D.;Fischer,W.A.,Arch.Eisenhuettenwes.,46(1975) ,755． 16 Janke,D.;Fischer,W.A.,Arch.Eisenhuettenwes.,47(1976) ,195． 17 Gschneidner,K.A.;Kippenhan,N.;McMaster,O.D.,Thermochemistry of the Rare Earths,Report № IS-RIC-6,Rare Earth Information Center,Amesl Iowa,1973． 18 Elliott,J.F.,Electr.Furnace Proc.,32(1974) ,62． 19 沢村宏,钢铁化学热力学,诚文堂新光社,1972,附表 p.43． 20 Ejima,A.;Suzuki,K.-I.;Harada,N.;Sanbongi,K.,Trans.Iron Steel Inst.Jpn.,17(1977) ,349． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed