关键词: 粗细粒尾矿, 自然沉降, 絮凝沉降, 3^#絮凝剂

Abstract: In order to provide a technical basis for concentration of a higher concentration of tailings in Masteel company, the static and dynamic natural sedimentation and flocculation-settling tests on these tailings are carried out. The static tests showed that when the tailing concentration is 12%, it required over 25 min to realize more than 40% concentration for the natural settlement, while suspended solids concentration in settling layers can be up to the requirement. While using 3^# flocculation of 5 g/t, the settling time can be reduced within 10 min. And the dynamic tests showed that with the same concentration and the underflow suspended solids content required, the flocculation and settling capacity of thickener per unit can be increased by 96.97% than that of the natural subsidence.

Key words: Coarse tailings, Natural settling, flocculation and settling, 3^# Flocculant