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Gold Science and Technology ›› 2017, Vol. 25 ›› Issue (5): 135-139.doi: 10.11872/j.issn.1005-2518.2017.05.135

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Study on the Curing Properties of Different Cementitious Materials for Cyanide Waste Residue

TU Yubo 1，2，HAN Peiwei 1，FU Guoyan 1，2，WEI Lianqi 1，ZHANG Xiaomeng 1，YU Bo 1，2，YE Shufeng 1   

  1. 1.State Key Laboratory of Multiphase Complex Systems，Institute of Process Engineering，Chinese Academy of Sciences，Beijing   100190，China；
    2.University of Chinese Academy of Sciences，Beijing   100049，China
  • Received:2017-07-11 Revised:2017-08-26 Online:2017-10-30 Published:2018-02-12

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Abstract:

The solidification of cyanide slag was carried out by different cementing materials as solidification agents.The results showed that the compressive strength of solidified body by modified magnesium oxysulfate cement（MOC） was better than those by portland cement（PC），aluminate cement（AC） and sulpho aluminate cement（SAC）. The leaching rates of CN- from solidified bodies were in the order that RAC>RSAC>RPC>RMOC，and the accumulative leaching fractions of CN- from solidified bodies were similar to the leaching rates of CN-.Part of cyanide slag participated in the cementing reaction in MOC solidified system，which could increase the strength of solidified body and inhibit the leaching of CN-.

Key words: cementing materials, cyanide slag, strength performance, leaching, solidification treatment, com- prehensive recovery technology

CLC Number: 

  • P596

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