金属学报  1986, Vol. 22 Issue (4): 86-92

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酒钢含重晶石铁精矿在烧结过程中重晶石分解机理的研究

任允芙;凤麟

北京钢铁学院;北京钢铁学院

MECHANISM OF DECOMPOSITION OF BARITE IN PROCESS OF SINTERING JIUQUAN BARITECONTAINING IRON ORE CONCENTRATE

by REN Yunfu; FENG Lin (Beijing University of Iron and Steel Technology)

任允芙;凤麟. 酒钢含重晶石铁精矿在烧结过程中重晶石分解机理的研究[J]. 金属学报, 1986, 22(4): 86-92.
, . MECHANISM OF DECOMPOSITION OF BARITE IN PROCESS OF SINTERING JIUQUAN BARITECONTAINING IRON ORE CONCENTRATE[J]. Acta Metall Sin, 1986, 22(4): 86-92.

摘要 参考文献 相关文章 Metrics 全文: PDF(1677 KB)   摘要: 本文研究了酒钢含重晶石铁精矿在加热烧结过程中重晶石的分解条件和分解机理。结果表明,在氧化气氛烧结过程中,两组分的铁矿物-重晶石混合料中的重晶石在1190℃开始分解,1240℃时反应速度最大,其分解机理为高温下重晶石与Fe_2O_3发生固相反应,生成BaO·6Fe_2O_3;多组分的酒钢铁精矿的烧结反应产物则为(BaO·6Fe_2O_3)·1.82(CaO·2Fe_2O_3)。动力学计算表明,在空气中重晶石分解的表观活化能E~*=119.9kJ/mol,反应级数n=1.3—1.4。 Abstract：The study was carried out on the decomposition mechanism of barite in the sintering mixtures of Jiuquan barite-containing iron ore concentrate during sintering, and on the interaction between barite and other constituents It showed that the decomposition of barite in sintering mixtures started at 1190℃ in air, and reached its maximum rate at 1240℃ During sintering, the decomposition mechanism of barite is the solid-state reaction between barite and Fe_2O_3 which takes place at high temperatures and the product under oxidized atmosphere is BaO.6Fe_2O_3 For the sintered Jiuquan sintering mixtures the product is (BaO. 6Fe_2O_3). 1.81 (CaO.2Fe_2O_3) The apparent activation energy of barite decomposition in air is 119.9 kJ/mol and the order of reaction is 1.3—1.4 obtained by kinetical calculation. 收稿日期: 1986-04-18      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 任允芙 凤麟 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I4/86 1 Van Hook, H.J., J. Am. Ceram. Soc., 47 (1964) , 580． 2 Krug, D.; Beer, F., Thermal Analysis, Budapest, July, 1974, Ed. Buzas, I., Akademidi Kiado, Hungary, Vol. Ⅰ, 1975, p. 1021-1029． 3 #12 4 叶大伦,实用无机物热力学数据手册,冶金工业出版社,1981． 5 Margrave, J.L., J. Chem. Educ., 32 (1955) , 520． 6 Freeman, E.S.; Carroll, B., 1． Phys. Chem., 62 (1958) , 395． 7 Wendlandt, W.W., Thermal Methods of Analysis, Interscience, New York, London,1968． p32-33． 8 #12 9 Ezz, S.Y.;Shehata, K.A.; Seoudi, E.A., Met. Min. Rev., 9 (1970) , 3 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed