Experimental Study on Ultra-fine Classified Tailings Based on Comprehensive Utilization of Tailings
To construct a mine without tailings discharge,a newly-built mine conducted an experimental study on ultra-fine classified tailings paste filling technology.The experiment first conducted a full tailings particle size screening test to select fine-grained graded tailings suitable for underground filling.Then,to address the issue of slurry ratio parameters for fine-grained tailings paste,fine-grained grading and full tailings paste collapse,expansion,and uniaxial compression tests were carried out,taking into account the influence of superplasticizer.The results indicate that the fluidity of the classified tailings paste without superplastic reinforcing agent is undesirable;the slump index of the fine-grained tailings filling slurry with superplastic reinforcing agent can satisfy the requirement of pipeline conveying,and the fluidity and strength of the classified tailings paste can also fulfill the requirement of mine filling.The study results show that the application of ultra-fine tailings filling plan in this mine is feasible.
万方数据
维普
