利用超重力富集和分離Sn-3% Fe熔體中的雜質元素鐵

楊玉厚; 李京京; 宋子睿; 欒益峰; 梁俊威; 陳凱; 李慧斌; 宋波

doi:10.13374/j.issn2095-9389.2018.01.006

利用超重力富集和分離Sn-3% Fe熔體中的雜質元素鐵

doi: 10.13374/j.issn2095-9389.2018.01.006

楊玉厚^1,2,
李京京^1,2,
宋子睿³,
欒益峰^1,2,
梁俊威^1,2,
陳凱^1,2,
李慧斌^1,2,
宋波^1,2, ,

1) 北京科技大學冶金與生態工程學院, 北京 100083
2) 北京科技大學鋼鐵冶金新技術國家重點實驗室, 北京 100083
3) 哈爾濱工業大學能源科學與工程學院, 哈爾濱 150001

基金項目:

國家自然科學基金資助項目（51234001）

詳細信息

中圖分類號: TF814
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出版歷程
- 收稿日期: 2017-06-01

Enriching and separating iron impurity from Sn-3% Fe melt by super gravity

YANG Yu-hou^1,2,
LI Jing-jing^1,2,
SONG Zi-rui³,
LUAN Yi-feng^1,2,
LIANG Jun-wei^1,2,
CHEN Kai^1,2,
LI Hui-bin^1,2,
SONG Bo^{1,2
, ,}

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

摘要

摘要: 在粗錫精煉過程中引入超重力場，運用超重力技術研究Sn-3% Fe（質量分數）熔體中雜質元素鐵在超重力場中的定向富集和過濾分離的規律，達到提純凈化粗錫的目的.結果表明，對于超重力場G=500以10℃·min^-1冷卻速率凝固后的Sn-3% Fe熔體，超重力場極大強化富鐵相在粗錫熔體中的沉降運動，使先析出富鐵相全部富集到試樣的下部區域，上部幾乎找不到富鐵相顆粒.下部尾錫中的鐵質量分數達到4.817%，而上部精錫中的鐵質量分數降低到0.036%，精錫中鐵的脫除率高達98.78%.在超重力場中過濾的Sn-3% Fe熔體可實現富鐵相雜質和精錫液的有效分離，當重力系數大于30時，精錫的回收率隨重力系數的增大而提高.在超重力場G=100，240℃條件下，Sn-3% Fe熔體過濾1 min后，精錫液幾乎全部被分離到坩堝底部，富鐵相雜質被截留在過濾碳氈上部，下部精錫中找不到富鐵相雜質的顆粒，精錫中鐵質量分數降至0.253%，富鐵渣中鐵質量分數高達11.528%.精錫中鐵的脫除率高達91.44%，超重力場中精錫的回收率高達82.69%.
- 超重力 /
- 富鐵相雜質 /
- 富集 /
- 分離 /
- 粗錫精煉
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 directional 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 ν=10℃·min^-1, 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 refined tin increased with increase in gravity coefficient in the range of G > 30. After filtration at 240℃ 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 mass percentage of iron in the refined tin was only 0.253%, while that in the iron-rich dross reached 11.528%. As a result, the removal rate of iron was up to 91.44%, while the recovery rate of the refined tin was as high as 82.69%.
- super gravity /
- iron impurity /
- enrichment /
- separation /
- crude tin refining

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參考文獻(16)

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