金属学报  1966, Vol. 9 Issue (1): 25-117

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低浓度含銅溶液的流态化床置換

刘锡洹;郑建生;郭慕孙

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

FLUIDIZED CEMENTATION OF COPPER FROM ITS DILUTE AQUEOUS SOLUTION

LIU HSI-HUAN; CHNG CHIEN-SHNG; MOOSON KWAUK(Institute of Chemical Metallurgy; Academia Sinica)

刘锡洹;郑建生;郭慕孙. 低浓度含銅溶液的流态化床置換[J]. 金属学报, 1966, 9(1): 25-117.
, , . FLUIDIZED CEMENTATION OF COPPER FROM ITS DILUTE AQUEOUS SOLUTION[J]. Acta Metall Sin, 1966, 9(1): 25-117.

摘要 参考文献 相关文章 Metrics 全文: PDF(1323 KB)   摘要: 提出了金属铁自水溶液中置換铜离子的反应模型,在此模型的基础上又提出了一个能够强化置换生产过程的液体流态化床法,并通过实验测得流态化置換的反应速率。 实验数据表明:在反应初期,金属铁自溶液中置換铜离子的速度符合于铁铜界面由铜离子浓度控制的一级反应;随着反应时间的增长、表面铜层增厚,反应转变为铜离子通过铜层的扩散控制过程。 采用锥形流态化床进行置換的实验表明:在铁珠表面生成的铜粉随着流态化床的激烈湍动能够连续剝落、被上升液流带出。部分反应后的铁珠具有不同的粒度,在锥形床中能够获得全部流态化。液体流态化床置换法的操作简单、便于自动化,以铸铁铁珠作为置換剂吋,在75℃温度下、于20秒钟的溶液平均停留时间內可将含Cu~(2+)0.1％溶液中铜的90％进行置換。 Abstract：On the basis of a proposed reaction mechanism for cementation of copper from its aqueous solution by means of metallic iron, the authors suggested a method employing fluidized iron pellets for recovering copper on an industrial scale.During the initial stage of the reaction, the rate of cementation conforms to a firstorder reaction controlled mainly by the concentration of copper ion at the iron-copper boundary. As cementation proceeds, however, metallic copper collects as a porous layer on the iron, and diffusion of copper ion through this layer becomes the rate-controlling step of the process.Experiments on cementation of copper in a conical bed of fluidized iron pellets indicate that the copper layer formed peels off continuously as a result of the turbulent motion of the stream and mutual collision of the iron pellets, and is thus carried away by the flowing liquid from the reaction zone. The adoption of the conical bed insures complete fluidization of all the iron pellets having a wide particle-size range which results from their different residence time in the cementation reactor. The operation of a fluidized cementator is simple and is particularly adaptable to automation. When cast iron beads are used, 90% of the copper contained in a 0.1% Cu~(2+) solution is recovered at an operating temperature of 75℃ during an average solution residence time of 20 seconds. 收稿日期: 1966-01-18      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 刘锡洹 郑建生 郭慕孙 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1966/V9/I1/25 [1] 著,胡为柏译:铜镍冶金学,(高等教育出版社,1955年),397页. [2] Newton, J.: Extractive Metallurgy, (Wiley, 1959) , p. 423． [3] 谭庆麟、王永祿:金属学报,1964,7,136． [4] 北京钢铁学院金相及热处理教研组:金属学,(中国工业出版社,1956年),303页. [5] 中国科学院化工冶金研究所流态化组:在液体流态化床内用铁置换铜,1959年4月(未发表). No related articles found! Viewed Full text Abstract Cited   Shared      Discussed