金属学报  1994, Vol. 30 Issue (23): 491-498

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CO还原CaO-SiO_2-Al_2O_3-Fe_tO渣系研究

杨学民;郭占成;于宪溥;艾菁;王大光

中国科学院化工冶金研究所

REDUCTION OF CaO-SiO_2-Al_2O_3-Fe_ tO QUARTERNARY SLAG SYSTEM BY CO

YANG Xuemin; GUO Zhancheng; YU Xianpu; AI Jing; WANG Daguang (Institute of Chemical Metallurgy; Chinese Academy of Sciences; Beijing)(Manuscript received 25 March;1994)

杨学民;郭占成;于宪溥;艾菁;王大光. CO还原CaO-SiO_2-Al_2O_3-Fe_tO渣系研究[J]. 金属学报, 1994, 30(23): 491-498.
, , , , . REDUCTION OF CaO-SiO_2-Al_2O_3-Fe_ tO QUARTERNARY SLAG SYSTEM BY CO[J]. Acta Metall Sin, 1994, 30(23): 491-498.

摘要 参考文献 相关文章 Metrics 全文: PDF(512 KB)   摘要: 研究了在１７２３Ｋ下ＣＯ还原ＣａＯ－ＳｉＯ_２－Ａ１_２Ｏ_３－Ｆｅ_ｔＯ渣系。根据ＣＯ_２红外分析仪测定的出口气体中ＣＯ_２浓度变化，计算了炉渣的表现还原速度常数Ｋ_ａ和还原速度常数Ｋ。结果表明，加入Ａｌ_２Ｏ_３，提高了ＣａＯ－ＳｉＯ_２－Ｆｅ_ｔＯ的Ｋ_ａ和Ｋ值；炉渣碱度不变时，随着Ｆｅ_ｔＯ含量的增加，Ｋ_ａ呈增加趋势，但Ｋ则呈抛物线趋势变化；当ＦｅＯ的光学碱度∧_ＦｅＯ为１．０或０．８７时，Ｋ_ａ随该四元渣系光学碱度的增加而线性增加，而Ｋ则呈递减趋势。用炉渣规则溶液模型计算了ＣａＯ－ＳｉＯ_２－Ａｌ_２Ｏ_３－Ｆｅ_ｔＯ四元渣系的Ｆｅ_ｔＯ活度ａ_Ｆｅ_ｔＯ。 关键词 ： ＣａＯ－ＳｉＯ_２－Ａｌ_２Ｏ_３－Ｆｅ_ｔＯ渣系,  还原速度,  Ｆｅ_ｔＯ活度,  光学碱度,  规则溶液模型     Abstract：The reduction of CaO-SiO_2-Al_2O_3-Fe_tO quarternary slag system by CO has been investigated. Apparent reduction rate constant K_ a was determined by mesuring CO_2 evolution from reaction tube with an infrared gas analyser. Adding Al_2O_3 to CaO-SiO_2-Fe_tO ternary slag increases both K_a and reduction rate constant K of CaO-SiO_2-Fe_tO ternary slag. K_a increases and K changes parabolicly with increasing Fe_tO content for CaO-SiO_2-Al_2O_3-Fe_tO slag system at constant slag basicity (B=CaO/SiO_2),and K approaches to the minimum when Fe_tO content is about 60%. K_a increases linearly and K takes a decrease tendency with the increase of optical basicity for A_(FeO) chosen as 1.0 or 0.87. The equation of calculating a_(Fe_tO) for CaO-SiO_2-Al_2O_3-Fe_tO slag system has been derived based on regular solution model and calculated a_(Fe_tO) values are in fairly agreement with bibliography reported data except for extremely Fe_tO rich region.(Correspondent: YANG Xuemin, Institute of Chemical Metallurgy, Chinese Academy of Sciences, Beijing 100080) Key words： CaO-SiO_2-Al_2O_3-Fe_tO slag system    reduction rate    optical basicity    Fe_tO activity    regular solution model      基金资助:国家自然科学基金 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 杨学民 郭占成 于宪溥 艾菁 王大光 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1994/V30/I23/491 1NagaskaT,IguchiY,Ban-yaS．FifthInternationalIronandSteelCong．April6-9,l986,WashingtonDC,USA,6692FineH,MeyerD,JankeD,EngelH-J．IronmakingSteelmaking,1985,12(4):1573杨学民,王大光,宣德茂,唐武成,第八届冶金物理化学学术研讨会论文集,苏州,1992:1534杨学民,王大光,刘天中,宣德茂,唐武成．化工冶金,1994:15:75杨学民,王大光,宣德茂,唐武成．化工冶金,1993;14:1956杨学民,王大光,宣德茂,唐武成,化工冶金,1995;16:77杨学民,王大光,宣德茂．金属学报,1993;29:B3418DuffyJA,IngramMD．JAmChemSoc．,1991;93:64489YoungRW,DuffyJA,HassallGJ,XuZ．．IronmakingSteelmakig,1992;19:20110BergmanA．SteelRes,1990;61:34711GaskellDR．TransISIJ,1982;22:99712NagabayashiR,HinoM,Ban-yaS．ISIJInt,1989;29:14013Ban-yaS．ISIJInt,1993;33:214万谷志郎,日野光兀,汤下宪志,铁钢,1985;71:85315万谷志郎,日野光兀,竹添英孝．铁钢,1985;71:190316Ban-yaS,HinoM．ChemicalPropertiesofMoltenSlags．Tokyo:TheIronandSteelInstituteofJapan,1991:275 [1] 刘清才. 钒钛磁铁矿熔态还原速度与渣相结构的关系[J]. 金属学报, 1996, 32(10): 1081-1086. [2] 杨学民;王大光;宣德茂. CO还原CaO—SiO_2—Fe_tO三元渣系的研究[J]. 金属学报, 1993, 29(8): 55-60. Viewed Full text Abstract Cited   Shared      Discussed