Experimental Study on Green Particle Function Strengthening of a Fine Tailing
In order to make efficient use of fine tailings in iron ore enterprises,aiming at the prob-lems of low tailings concentration and poor transportation fluidity in the filling process of fine tailings,combined with the characteristics of fine tailings,the hydrophobic effect enhancement of green granulation and oily coating is studied by adding boric acid,boron oxide and sodium carbonate.The results show that under the combined action of boric acid,boron oxide and sodium carbonate,the strength of green body particles is increased to about 3 times of the blank group.The green body particles sprayed with high tem-perature oil on the surface can also maintain a stable state under strong oscillation in water,and the leach-ing amount of Na and B elements is significantly reduced by 3～10 times compared with the uncovered high temperature oil,showing good environmental friendliness.The granulation of fine tailings and the cov-ering of hydrophobic film on the surface can improve the strength and water solubility of particles,which provides a new way to improve the filling concentration of fine tailings and the fluidity of filling and trans-portation.It can make fine tailings more widely used in filling and realize the reduction of fine tailings from the source.
fine tailingsgreen granulationstrengthhydrophobicityenvironmental friendliness
万方数据
维普
