Journal of Northeastern University(Natural Science)

Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (6): 876-881.DOI: 10.12068/j.issn.1005-3026.2015.06.026

• Resources & Civil Engineering • Previous Articles     Next Articles

Formula Development and Industrial Testing of a Hygroscopic Road Dust-Depressor

DU Cui-feng1， WANG Yuan1， LU Jun-jie1， WU Zhao-peng2   

  1. 1. Civil and Environmental School， University of Science and Technology Beijing， Beijing 100083， China; 2. Wulongquan Mine， Wuhan Iron and Steel Group Minerals Co.， Ltd.， Wuhan 430213， China.
  • Received:2014-01-24 Revised:2014-01-24 Online:2015-06-15 Published:2015-06-11
  • Contact: WANG Yuan
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Abstract: Based on the characteristics and mechanisms of open pit road dust， one hygroscopic road dust-depressor was developed. The components of the dust-depressor agent were optimized by taking water loss rate as the evaluation index， which is based on the orthogonal test. The hygroscopicity， wind resistance and other properties of the optimal formula were tested in a lab environment. The results showed that the moisture contents of the optimal formula were all above 8.18% within 25 days， indicating that the optimal formula had a very good windbreak performance. Taking the optimal formula to industrial testing， it was found that the effective time of dust suppression is 10 days. Compared with the traditional water spraying， it could reduce the cost for dust suppression by 30.71% and increase the water-saving efficiency up to 94.67%.

Key words: road dust, hygroscopic road dust-depressor, water loss rate, instantaneous dust concentration, dust diameter distribution

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