金属学报  1984, Vol. 20 Issue (1): 123-130

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γ-NiS加压氧化酸浸动力学的研究

方兆珩;夏光祥;陈家镛

中国科学院化工冶金研究所;中国科学院化工冶金研究所;中国科学院化工冶金研究所

THE KINETICS OF SULPHURIC ACID LEACHING OF SYNTHETIC γ-NiS UNDER OXYGEN PRESSURE

FANG Zhaoheng; XIA Guangxiang; CHEN Jiayong(CHEN Chiayung)(Institute of Chemical Metallurgy; Academia Sinica; Beijing)(Manuscript received 21 November; 1982; revised manuscript 4 May; 1983)

方兆珩;夏光祥;陈家镛. γ-NiS加压氧化酸浸动力学的研究[J]. 金属学报, 1984, 20(1): 123-130.
, , . THE KINETICS OF SULPHURIC ACID LEACHING OF SYNTHETIC γ-NiS UNDER OXYGEN PRESSURE[J]. Acta Metall Sin, 1984, 20(1): 123-130.

摘要 参考文献 相关文章 Metrics 全文: PDF(603 KB)   摘要: 研究了110—160℃及po_2<4900 kPa条件下,硫酸溶液中γ-NiS(针镍矿)氧化浸取动力学。浸取速率过程可用表面无固体生成物沉积的核心收缩模型描述,如 1-(1-α)~(1/3)=(k/ρr_0)t=Kt浸取速率在pH<2.5时,与H~+浓度无关;pH>2.5时,为pH值的一个函数。浸取反应对氧分压来说为0.5级。反应的表观活化能为97.5kJ·mol~(-1),pH<2.5时,上式中的速率常数可表示为 K=1.45×10~5(4.55+1/(?)_0)P_(O_2)~(1/2)[H~+]~(?)e~(-11720/T)溶液中少量Cu~(2+),Ag~+的存在,降低了对γ-NiS的浸取速率。 Abstract：The kinetics of oxygen leaching of synthetic γ-Nis, or milerite, in dilute H_2SO_4 solution under oxygen pressure, below 4900 kPa, at the temperature range from 110 to 160℃ was studied. The leaching rate can be described by an unreacted shrinking core with no solid product formed on the surface. The rate of reaction can be reflected by the following equation: 1-(1-α)~(1/3)=(k/ρr_0)t=Kt The rate Constant K in the above equation can be expressed as: K=1.45×10~5(4.55+1/(?)_0)P_(O_2)~(1/2)[H~+]~(?)e~(-11720/T) The reaction rate will be retarded by tbe Cu and Ag ions in solution. 收稿日期: 1984-01-18      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 方兆珩 夏光祥 陈家镛 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1984/V20/I1/123 1 Llanos, Z.R.; Queneau, P.B.; Richard, R.S., CIM Bull., 67 (1974) , No. 742, 17． 2 夏光祥;张福鑫;张道权,高冰镍浸取动力学的研究,1980,未发表资料. 3 Richard, W.H., Eng. Min. J., 178 (1977) , No. 5, 76． 4 #12 5 #12 6 Nicolic, C., Diss. Abstr. Int., Sect. B, 40 (1979) , 880． 7 Hass, L.A.; Schluter, R.B.; Mahan, W.M., Eng. Min. J., 178 (1977) , No. 4, 80． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed