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°®ÓëÓêÏÂ: ½ð±Ò+1 2014-04-30 19:02:50
¼á³ÖÖðÃÎ: ½ð±Ò+100, ·­ÒëEPI+1, ¡ïÓаïÖú 2014-05-02 12:47:52
Focused on  tailings deposition, we selected a set of  quasi-optimal solution on the basis of  previous experiment   to  prepare curing agents to  study the effect of curing agents  on iron tailings treatment. The results showed that the  7d cured   body's strength of the 55%  concentration  tailing slurry of 5-6%  curing agent content  is  up to 0.49 MPa and  not  argillization   when it encounters water . The  cured body's   higher shear strength, with a permeability coefficient  less than 10-4cm / s,  reached  the safety requirements of stockpiling .The cured body  of 10-14% curing agent content  is of   high early and later stage strength and 7d curing date strength is up to 1.8 MPa , 28d  2.9 MPa, which  meet the requirements of the dam construction.  The  curing mechanism of iron ore tailings are also investigated through XRD and SEM characterization of  the original tailings and tailing solidification forms.
Keywords: iron ore tailings; curing agent; curing stockpile
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