工程科学学报，第40卷，第1期：41-50.2018年1月 Chinese Journal of Engineering,Vol.40,No.I:41-50,January 2018 DOI:10.13374/j.issn2095-9389.2018.01.006;http://journals.ustb.edu.cn 利用超重力富集和分离Sn-3%Fe熔体中的杂质元素铁 杨玉厚12)，李京京12)，宋子睿)，栾益峰12)，梁俊威2)，陈凯2)，李慧斌2) 宋 波1,2)✉ 1)北京科技大学治金与生态工程学院，北京1000832)北京科技大学钢铁治金新技术国家重点实验室，北京100083 3)哈尔滨工业大学能源科学与工程学院，哈尔滨150001 ☒通信作者，E-mail:songbo(@metall.usth.edu.cn 摘要在粗锡精炼过程中引入超重力场，运用超重力技术研究S-3%Fe(质量分数)熔体中杂质元素铁在超重力场中的定 向富集和过滤分离的规律，达到提纯净化粗锡的目的.结果表明，对于超重力场G=500以10℃·min'冷却速率凝固后的S加- 3%F熔体，超重力场极大强化富铁相在粗锡熔体中的沉降运动，使先析出富铁相全部富集到试样的下部区域，上部几乎找不 到富铁相颗粒.下部尾锡中的铁质量分数达到4.817%，而上部精锡中的铁质量分数降低到0.036%，精锡中铁的脱除率高达 98.78%.在超重力场中过滤的S-3%Fe熔体可实现富铁相杂质和精锡液的有效分离，当重力系数大于30时，精锡的回收率 随重力系数的增大而提高.在超重力场G=100,240℃条件下，Sn-3%Fe熔体过滤1min后，精锡液几乎全部被分离到坩埚底 部，富铁相杂质被截留在过滤碳毡上部，下部精锡中找不到富铁相杂质的颗粒，精锡中铁质量分数降至0.253%，富铁渣中铁 质量分数高达11.528%.精锡中铁的脱除率高达91.44%，超重力场中精锡的回收率高达82.69%. 关键词超重力：富铁相杂质；富集；分离；粗锡精炼 分类号TF814 Enriching and separating iron impurity from Sn-3%Fe melt by super gravity YANG Yu-hou'),LI Jing-jing2),SONG Zi-rui),LUAN Yi-feng2),LIANG Jun-uei),CHEN Kai2),LI Hui-bin,SONG Bo2) 1)School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083.China 2)State Key Lab of Advanced Metallurgy.University of Science and Technology Beijing,Beijing 100083,China 3)School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China Corresponding author,E-mail:songbo@metall.ustb.edu.cn ABSTRACT Iron is one of the major impurity elements in industrially produced crude tin,and it is always removed first during the refining process.In this study,the super gravity field was introduced in the crude tin refining process in order to investigate the direc- tional enriching and separating laws of iron impurity from Sn-3%Fe melt,and thereby purify the crude tin.The experimental results showed that with the gravity coefficient G=500 at a cooling rate of=10 C.min,all of the iron-rich phase gathered at the bottom area of the sample;it was hard to find any iron-rich phase particles at the upper area of the sample since super gravity greatly increased the sedimentation of the iron-rich phase in the crude tin melt.The mass percentage of iron in the tailing tin was up to 4.817%,while that in the refined tin was only 0.036%.Consequently,the removal rate of iron was up to 98.78%.The iron-rich phase impurity could be separated effectively from the Sn-3%Fe melt using filtration method in the super gravity field,and the recovery rate of the re- fined tin increased with increase in gravity coefficient in the range of G>30.After filtration at 240C by gravity coefficient G=100 for 1 min,the refined tin was separated to the bottom of the crucible,and the iron-rich dross was intercepted by the carbon fiber felt.The 收稿日期：2017-06-01 基金项目：国家自然科学基金资助项目(51234001)工程科学学报,第 40 卷,第 1 期:41鄄鄄50,2018 年 1 月 Chinese Journal of Engineering, Vol. 40, No. 1: 41鄄鄄50, January 2018 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 01. 006; http: / / journals. ustb. edu. cn 利用超重力富集和分离 Sn鄄鄄3% Fe 熔体中的杂质元素铁 杨玉厚1,2) , 李京京1,2) , 宋子睿3) , 栾益峰1,2) , 梁俊威1,2) , 陈 凯1,2) , 李慧斌1,2) , 宋 波1,2) 苣 1)北京科技大学冶金与生态工程学院, 北京 100083 2)北京科技大学钢铁冶金新技术国家重点实验室, 北京 100083 3)哈尔滨工业大学能源科学与工程学院, 哈尔滨 150001 苣通信作者, E鄄mail:songbo@ metall. ustb. edu. cn 摘 要 在粗锡精炼过程中引入超重力场,运用超重力技术研究 Sn鄄鄄3% Fe(质量分数)熔体中杂质元素铁在超重力场中的定 向富集和过滤分离的规律,达到提纯净化粗锡的目的. 结果表明,对于超重力场 G = 500 以 10 益·min - 1冷却速率凝固后的 Sn鄄鄄 3% Fe 熔体,超重力场极大强化富铁相在粗锡熔体中的沉降运动,使先析出富铁相全部富集到试样的下部区域,上部几乎找不 到富铁相颗粒. 下部尾锡中的铁质量分数达到 4郾 817% ,而上部精锡中的铁质量分数降低到 0郾 036% ,精锡中铁的脱除率高达 98郾 78% . 在超重力场中过滤的 Sn鄄鄄3% Fe 熔体可实现富铁相杂质和精锡液的有效分离,当重力系数大于 30 时,精锡的回收率 随重力系数的增大而提高. 在超重力场 G = 100,240 益条件下,Sn鄄鄄3% Fe 熔体过滤 1 min 后,精锡液几乎全部被分离到坩埚底 部,富铁相杂质被截留在过滤碳毡上部,下部精锡中找不到富铁相杂质的颗粒,精锡中铁质量分数降至 0郾 253% ,富铁渣中铁 质量分数高达 11郾 528% . 精锡中铁的脱除率高达 91郾 44% ,超重力场中精锡的回收率高达 82郾 69% . 关键词 超重力; 富铁相杂质; 富集; 分离; 粗锡精炼 分类号 TF814 收稿日期: 2017鄄鄄06鄄鄄01 基金项目: 国家自然科学基金资助项目(51234001) Enriching and separating iron impurity from Sn鄄鄄3% Fe melt by super gravity YANG Yu鄄hou 1,2) , LI Jing鄄jing 1,2) , SONG Zi鄄rui 3) , LUAN Yi鄄feng 1,2) , LIANG Jun鄄wei 1,2) , CHEN Kai 1,2) , LI Hui鄄bin 1,2) , SONG Bo 1,2) 苣 1) School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) State Key Lab of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China 3) School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 苣Corresponding author, E鄄mail: songbo@ metall. ustb. edu. cn ABSTRACT Iron is one of the major impurity elements in industrially produced crude tin, and it is always removed first during the refining process. In this study, the super gravity field was introduced in the crude tin refining process in order to investigate the direc鄄 tional enriching and separating laws of iron impurity from Sn鄄鄄3% Fe melt, and thereby purify the crude tin. The experimental results showed that with the gravity coefficient G = 500 at a cooling rate of 淄 = 10 益·min - 1 , all of the iron鄄rich phase gathered at the bottom area of the sample; it was hard to find any iron鄄rich phase particles at the upper area of the sample since super gravity greatly increased the sedimentation of the iron鄄rich phase in the crude tin melt. The mass percentage of iron in the tailing tin was up to 4郾 817% , while that in the refined tin was only 0郾 036% . Consequently, the removal rate of iron was up to 98郾 78% . The iron鄄rich phase impurity could be separated effectively from the Sn鄄鄄3% Fe melt using filtration method in the super gravity field, and the recovery rate of the re鄄 fined tin increased with increase in gravity coefficient in the range of G > 30. After filtration at 240 益 by gravity coefficient G = 100 for 1 min, the refined tin was separated to the bottom of the crucible, and the iron鄄rich dross was intercepted by the carbon fiber felt. The