24小时热门版块排行榜    

查看: 616  |  回复: 2
本帖产生 1 个 翻译EPI ,点击这里进行查看

wyez

木虫 (小有名气)


[交流] 求翻译摘要

降低高纯金属镉中杂质Zn和Fe的工艺探索

摘要
本人介绍了高纯金属的定义、性质和用途以及制备方法,综述了高纯镉的生产方法,对工业镉真空蒸馏提纯和直拉提纯进行了计算与分析,对工业镉的真空蒸馏和直拉提纯进行了试验研究,提出了一个全新的提取高纯镉的工艺流程。
通过对工业镉真空蒸馏的热力学分析表明,根据分离系数的大小,工业镉中的杂质元素可分为两类:分离系数β<1的Pb、Ni、Cu、Fe、Sn、Ti,分离系数在1附近的As和Zn。用真空蒸馏的方法能够比较彻底的出去工业镉中的Pb、Ni、Cu、Fe、Sn、Ti,而As和Zn的分离则比较困难;为使工业镉中的杂质在真空蒸馏时与镉很好分离,应采用连续作业的闭式多级真空蒸馏。
在673~723K的温度范围内,对工业镉真空蒸馏的动力学进行了研究,在此温度范围内,温度升高50K,镉的最大蒸馏速度平均增大约3.5倍。镉真空蒸馏过程中,蒸馏速度随压强的降低而增大,但当压强降低到临界压强以下后,蒸馏速度不再随压强的降低而变化而是保持一定值。
通过对镉的直拉提纯试验研究,得出了直拉热场、提拉速度、晶轴转速和坩锅转速对提纯效果的影响。
通过以上研究,得出了以工业镉为原料,通过真空蒸馏提纯、直拉提纯的工艺流程制取高纯金属镉的工艺流程,该工艺对降低高纯镉的生产成本和环境保护方面具有重要意义。
关键词:高纯金属,镉,真空蒸馏,直拉提纯
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

tjshao

铜虫 (小有名气)


2楼2011-03-20 14:13:08
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

zxs1989

金虫 (著名写手)


wyez(金币+1, 翻译EPI+1): 2011-03-20 17:11:23
wyez(金币+60): 2011-03-20 17:11:38
降低高纯金属镉中杂质Zn和Fe的工艺探索
Title: Process investigation on lowering Zn and Fe in high purity Cd

摘要
本人介绍了高纯金属的定义、性质和用途以及制备方法,综述了高纯镉的生产方法,对工业镉真空蒸馏提纯和直拉提纯进行了计算与分析,对工业镉的真空蒸馏和直拉提纯进行了试验研究,提出了一个全新的提取高纯镉的工艺流程。
Abstract: In this article, the definition, preparation, properties and applications of high purity metal were introduced, manufacturing methods of high purity Cadmium (Cd) were overviewed, not only theoretical calculation and analysis but also experimental study was performed to investigate vacuum distillation and Czochralski purification of industrial Cadmium, and a new process was proposed to obtain high purity Cadmium.

通过对工业镉真空蒸馏的热力学分析表明,根据分离系数的大小,工业镉中的杂质元素可分为两类:分离系数β<1的Pb、Ni、Cu、Fe、Sn、Ti,分离系数在1附近的As和Zn。用真空蒸馏的方法能够比较彻底的出去工业镉中的Pb、Ni、Cu、Fe、Sn、Ti,而As和Zn的分离则比较困难;为使工业镉中的杂质在真空蒸馏时与镉很好分离,应采用连续作业的闭式多级真空蒸馏。
According to the thermodynamic analysis of the vacuum distillation process of industrial Cd, the impurity elements in industrial Cd can be divided into two categories based on their separation constants (β): Pb, Ni, Cu, Fe, Sn and Ti (β<1) and As, Zn (β≈1). Thus, Pb, Ni, Cu, Fe, Sn and Ti can be almost completely removed from industrial Cd via vacuum distillation while the separation of As and Zn by vacuum distillation seems relatively difficult. In order to efficiently remove imputities from industrial Cd during vacuum distillation, continuous operation of closed multistage vacuum distillation should be adopted.

在673~723K的温度范围内,对工业镉真空蒸馏的动力学进行了研究,在此温度范围内,温度升高50K,镉的最大蒸馏速度平均增大约3.5倍。镉真空蒸馏过程中,蒸馏速度随压强的降低而增大,但当压强降低到临界压强以下后,蒸馏速度不再随压强的降低而变化而是保持一定值。
The kinetics of vacuum distillation of industrial Cd was investigated in the temperature range of 673~723 K. The maximum distillation rate of Cd increased near 3.5-fold in average with a temperature elevation of 50 K. The distillation rate of Cd increased with the decrease of pressure during vacuum distillation but kept fixed irrespective to pressure when the pressure is lower than the critical pressure.   

通过对镉的直拉提纯试验研究,得出了直拉热场、提拉速度、晶轴转速和坩锅转速对提纯效果的影响。
The Czochralski purification experiment provided insights into the effect of thermal field, pulling speed, rotating speed of crystal axis and rotating speed of crucible on purification.

通过以上研究,得出了以工业镉为原料,通过真空蒸馏提纯、直拉提纯的工艺流程制取高纯金属镉的工艺流程,该工艺对降低高纯镉的生产成本和环境保护方面具有重要意义。
Based on the abovementioned comprehensive investigation, a technological process to manufacture high purity Cd from industrial Cd by integration of vacuum distillation and Czochralski method was proposed, and this process was believed to have important implications for lowering the production cost of high purity Cd and for environmental protection.

关键词:高纯金属,镉,真空蒸馏,直拉提纯
Keywords: high purity metal; Cadmium; vacuum distillation; Czochralski method
3楼2011-03-20 16:57:24
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 wyez 的主题更新
普通表情 龙 兔 虎 猫 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[论文投稿] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +4 gRND4NVAZ8VG 2026-11-11 5/250 2026-11-13 11:15 by Equinoxhua
[考研] 售一区SCI文章T0P,我:8O.551.O54,科目全,可十急 +8 zSbvVX9JFl9J 2026-11-09 9/450 2026-11-13 11:11 by Equinoxhua
[考博] 27博士申请(市政/环境) +3 ladf 2026-11-12 3/150 2026-11-13 08:19 by Equinoxhua
[考博] 27博士申请 +5 白白白ly 2026-11-09 5/250 2026-11-13 05:01 by wlf1982
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +4 Z7qfCsdIiD1T 2026-11-11 5/250 2026-11-12 11:44 by HajghKOMynmz
[教师之家] 售SCI一区文章,我:8.O.551.O.5.4,科目全,可伽急 +4 Z7qfCsdIiD1T 2026-11-10 9/450 2026-11-12 11:22 by HajghKOMynmz
[教师之家] 售SCI文章,我:8O5.5.1.O.54,科目齐全,可+急 +4 Z7qfCsdIiD1T 2026-11-10 5/250 2026-11-12 11:14 by HajghKOMynmz
[考研] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +5 czAiolzR0IJC 2026-11-10 6/300 2026-11-12 11:03 by HajghKOMynmz
[考研] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +7 czAiolzR0IJC 2026-11-10 9/450 2026-11-12 11:00 by HajghKOMynmz
[考博] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +3 G2rhSvqvhNzl 2026-11-10 5/250 2026-11-12 10:49 by HajghKOMynmz
[硕博家园] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +4 G2rhSvqvhNzl 2026-11-10 6/300 2026-11-12 10:49 by HajghKOMynmz
[公派出国] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +4 C6CRn66RYYXS 2026-11-10 8/400 2026-11-12 10:27 by HajghKOMynmz
[硕博家园] 售SCI一区文章,我:8.O.55.1.O.54,科目齐全,可伽急 +4 C6CRn66RYYXS 2026-11-10 6/300 2026-11-12 10:16 by HajghKOMynmz
[教师之家] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +8 zSbvVX9JFl9J 2026-11-09 12/600 2026-11-12 09:21 by HajghKOMynmz
[基金申请] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +6 zSbvVX9JFl9J 2026-11-09 9/450 2026-11-12 09:21 by HajghKOMynmz
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +5 czAiolzR0IJC 2026-11-10 5/250 2026-11-12 06:25 by 9fOTqj074tIg
[硕博家园] 售SCI文章,我:8O5.5.1.O.54,科目齐全,可+急 +3 G2rhSvqvhNzl 2026-11-10 5/250 2026-11-12 06:14 by 9fOTqj074tIg
[考研] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +5 cqv1zKnzd7hr 2026-11-09 8/400 2026-11-12 05:08 by 9fOTqj074tIg
[考研] 售一区SCI文章T0P,我:8O.551.O54,科目全,可十急 +3 Z7qfCsdIiD1T 2026-11-10 4/200 2026-11-12 02:23 by 9fOTqj074tIg
[教师之家] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +6 cqv1zKnzd7hr 2026-11-09 7/350 2026-11-12 00:44 by 9fOTqj074tIg
信息提示
请填处理意见