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Modern Mining ›› 2014, Vol. 30 ›› Issue (05): 142-146.

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Research on Active Excitation Mechanism of Germanium Slag as Cement Admixture

 Li Hui1，Wang Yiming2，Jiao Huazhe3，Liu Xiaohui2，Yu Shaofeng2   

  1. 1.Africa Mining Public Limited Company of China Nonferrous Metals Co. Ltd.；2.School of Civil and Environmental Engineering, University of Science & Technology Beijing；3.School of Civil Engineering, Henan Polytechnic University
  • Online:2014-05-15 Published:2015-08-13

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Abstract: Germanium slag, as the solid wastes in the process of mineral resources exploration and utilization, but the storage of slag for long-term not only causes the waste of resources, but also seriously affects the surrounding environment. The physico-chemical properties of germanium slag was researched, and the germanium can be used as cement admixture. Na2CO3, AlCl3·6H2O, Ca(OH)2 as well as NaAlO2 could be used as activator to enhance the comprehensive strength of samples, NaAlO2 has the most activition, NaAlO2 and hydration products Ca(OH)2 reaction and generated octahedral [Al(OH)6]2-, which reaction with gypsum under alkaline environment and ettringite was generated and would enhance the sample strength.

Key words: Germanium slag, Activator, Cement admixture