Research on Rapid Flocculation and Settlement of Bauxite Microfine-grained Slime
Bauxite mining enterprises have tailings storage facilities with large stockpiles of slimes,and the tailings storage facilities occupy a large area,are highly prone to leakage,and pose significant safety and environmental risks.With the introduction of national policies on management of tailings storage facilities,the rapid dewatering and dry discharge of ore slimes and the transformation of the slimes into reclamation materials will become a necessary path for the sustainable development of bauxite mines.Through the analysis of the mineral characteristics of stacked bauxite,the flocculation and sedimentation methods of bauxite microfine-grained slimes are explored,and the slimes are transformed into soil reclaimation materials.The results show that when CS89 flocculant is used for slime flocculation and sedimentation,the average sedimentation rate of bauxite slimes reaches 87.5 mm/min after 2 minutes at a slurry concentration of 60 g/L and a flocculant dosage of 200 g/t,and the initial simulated sedimentation rate at 1.8 m is 38.84 mm/min,with a bottom concentration of 33.69%;After flocculation with CS89,bauxite slimes form super large flocs,greatly improving dewatering efficiency and filtration capacity.After flocculation and sedimentation,the slimes are filtered by vacuum filters to become filter cakes with a solid content of 60%.The filter cakes can be used as soil reclaimation materials for mining areas,and the supernatant meets industrial wastewater discharge standards.
bauxitemicrofine-grainore slimeflocculation and settlement
万方数据
维普
