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*Corresponding author: Dr. Mamadou Fall; URSTM University of Quebec in Abitibi-Temiscamingue; 445, boul. de l'Universit, Rouyn-Noranda Qc, J9X 5E4 Canada; mamadou.fall@uqat.ca
 

Summary: *Corresponding author: Dr. Mamadou Fall; URSTM ­ University of Quebec in Abitibi-Temiscamingue; 445, boul. de
l'Université, Rouyn-Noranda Qc, J9X 5E4 Canada; mamadou.fall@uqat.ca
1
Effect of tailings properties on paste backfill performance
M. Fall*, M. Benzaazoua, S. Ouellet
University of Quebec in Abitibi-Temiscamingue, Canada
The increasing use of paste backfill in underground mining makes it necessary to quantify the effect of tailings properties, such as
physical and chemical properties, on the performance properties of cemented paste backfill (CPB). Hence, this paper presents the
results of an experimental investigation carried out to evaluate the influence of physical (tailings particle size and density) and
chemical properties (tailings sulphide content) of tailings on the performance properties of the paste backfill. The studied
performance properties included: mechanical and economical performance, water demand, pulp density and transportability. The
gained results have shown that the tailings fineness and density influence significantly the performance properties of paste backfill.
The sulphide content of the tailings has also significant effect on the performance of paste backfill. The results of this study will
contribute to better understand the behaviors of the paste backfill and optimize its mixtures.
1 INTRODUCTION
The use of paste technology for underground
backfill has been accepted as a cost-effective
alternative to rock and hydraulic backfill
worldwide in the mining industry. Its using is
extensive in Canadian underground hard rock

  

Source: Aubertin, Michel - Département des génies civil, géologique et des mines, École Polytechnique de Montréal

 

Collections: Engineering; Environmental Management and Restoration Technologies