最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
含鍺真空爐渣在HCl-CaCl2-H2O體系中浸出鍺的動力學(xué)研究
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學(xué)基金(51174240);廣東省產(chǎn)學(xué)研引導(dǎo)項目(20110908)


Leaching Kinetics of Germanium in Vacuum Slag in HCl-CaCl2-H2O Solution
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評論
    摘要:

    為提高真空爐渣中鍺的浸出率提供理論依據(jù),對含鍺真空爐渣在HCl-CaCl2-H2O體系中鍺的浸出動力學(xué)進(jìn)行了研究。結(jié)果表明,浸出過程屬于生成固體產(chǎn)物層的“未反應(yīng)核收縮模型”,其宏觀動力學(xué)方程為:1–2/3x–(1–x)2/3=4.66×10-3CHCl1.027CCaCl21.046d-0.862exp(–21068/RT)t,表觀活化能為21.068 kJ/mol,浸出過程受灰分層擴散控制;提高鹽酸的濃度、氯化鈣濃度、浸出溫度、液固比及減小礦物粒度均可加快鍺的浸出速度,提高鍺的浸出率。

    Abstract:

    In order to provide a theoretical basis to improve the leaching rate of germanium in vacuum slag, the leaching kinetics of germanium in vacuum slag was investigated in hydrochloric acid-calcium chloride solution. The results show that the leaching process fits the generation of solid products of unreacted-core shrinking model. The kinetics equation is 1–2/3x–(1–x)2/3=4.66×10-3CHCl1.027CCaCl21.046d-0.862exp(–21068/RT)t. The leaching process is controlled by the diffusion of the lixiviant and the activation energy is determined to be 21.068 kJ/mol. The leaching speed and the leaching rate of germanium are increased by increasing the hydrochloric acid concentration, the calcium chloride concentration, the leaching temperature and the liquid-solid ratio and decreasing the particle size of the sample.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

何 靜,王小能,劉明海,王繼民,唐謨堂,魯君樂,王 濤,羅 超,郭 瑞,藍(lán)明艷.含鍺真空爐渣在HCl-CaCl2-H2O體系中浸出鍺的動力學(xué)研究[J].稀有金屬材料與工程,2013,42(6):1258~1263.[He Jing, Wang Xiaoneng, Liu Minghai, Wang Jimin, Tang Motang, Lu Junle, Wang Tao, Luo Chao, Guo Rui, Lan Mingyan. Leaching Kinetics of Germanium in Vacuum Slag in HCl-CaCl2-H2O Solution[J]. Rare Metal Materials and Engineering,2013,42(6):1258~1263.]
DOI:[doi]

復(fù)制
文章指標(biāo)
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2012-06-05
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: