Study on Comprehensive Utilization of New Tailings in Daye
The tailings of Daye Iron Mine have large output,low comprehensive utilization rate and safety risk.Based on the research on the performance of new tailings in Daye,the comprehensive utiliza-tion direction is put forward.The results show that the tailing density is 3.20 g/cm3,the loose density is 1.25 g/cm3,the dense density is 1.47 g/cm3,the loose porosity is 61％,the dense porosity is 54.1％,the aver-age particle size of the tailing is 2.626 μm,and the grading is poor.The tailing is rich in a large amount of Fe and SiO2,while the contents of harmful elements S and P in the tailing are less than 0.1％,there is no radio-active pollution,and the tailing is rich in Ti,V,Cr,Ni and other associated elements,which belongs to the iron tailings of low calcium,magnesium,aluminum and silicon.In tailings filling,15 million anionic floccu-lant is used as flocculant,the dosage of flocculant is 40 g/t,the recommended filling concentration is 76％,and the ratio of lime to sand is 1:8.The tailings of new ores in Daye are recycled by recovering valuable ele-ments and minerals,filling mined-out areas,and being used as elemental fertilizers and soil amendments.
tailing performanceslurry characteristicscomprehensive utilization of tailings
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