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金属矿山 ›› 2009, Vol. 39 ›› Issue (02): 102-104.

• 矿物工程 • 上一篇    下一篇

铁矿石中二氧化硅含量的快速测定

陈平,吕宪俊,孙丽君   

  1. 山东科技大学
  • 出版日期:2009-02-16 发布日期:2012-02-02

Rapid Determination of SiO2 in Iron Ore

Chen Ping,Lu Xianjun,Sun Lijun   

  1. Shandong University of Science and Technology
  • Online:2009-02-16 Published:2012-02-02

摘要: 将铁矿石试样用NaOH+Na2O2混合熔剂分解,再用稀盐酸浸取,使硅成硅酸状态,然后采用硅钼蓝分光光度法测定二氧化硅的含量。该方法简便、准确、可靠,实现了铁矿石中常量硅的快速测定,能够很好地适应选矿过程控制的需要。

关键词: 铁矿石, 二氧化硅含量, 硅钼蓝分光光度法

Abstract: The iron ore sample is decomposed with NaOH+Na2O2 flux and the melt is digested with dilute hydrochloric acid to convert the SiO2 into soluble silicic acid.Then the silicon dioxide content in the sample is determined by molybdenum-blue spectrophotometry.The method that is simple, accurate and reliable enables a rapid macroanalysis of silicon dioxide, well meeting the control requirement of iron ore beneficiation.

Key words: Iron ore, Silicon dioxide content, Silicon molybdenum-blue spectrophotometry