Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2010, Vol. 31 ›› Issue (2): 210-213.DOI: -

• OriginalPaper • Previous Articles     Next Articles

Effect of roasting on chlorine content in powdered CaB6 prepared by self-propagating high-temperature synthesis

Dou, Zhi-He (1); Zhang, Ting-An (1); Niu, Li-Ping (1); He, Ji-Cheng (1)   

  1. (1) Key Laboratory of Ecological Utilization of Multimetallic Mineral, Ministry of Education, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-02-15 Published:2013-06-20
  • Contact: Zhang, T.-A.
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Abstract: To discuss the effects of roasting temperature/time on the Cl content in powder CaB6 synthesized by SHS(self-propagating high-temperature synthesis) process, the CaB6 was characterized by DSC, XRD and SEM. The results indicated that the products from SHS include CaB6, MgO and little of both Ca3(BO3)2 and Mg3(BO3)2, and the leached product is so pure that the mass fraction of CaB6 is 96.82wt%, and the residue Cl content in CaB6 is only 0.36%. The removal rate of Cl from CaB6 increases with the roasting temperature/time increasing, e.g., the removal rate of Cl can be up to 80.12% after roasting CaB6 for 6hr at 720°C. However, over temperature will degrade CaB6 due to oxidation with decreasing removal rate of Cl.

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