Determining Proportion of Sintered Bricks Made From Large Dosage of Gold Mine Tailings
That preparing sintered bricks with gold mine tailings is one of the effective ways to absorb bulk gold tail-ings.Starting from the preparation of sintered bricks that meet national standards with gold tailings mixed with clay,the plasticity index is studied as a key factor affecting the strength of sintered bricks.Through joint testing of liquid-plastic limit of gold tailings clay mixture materials with different blending ratios,it was found that the plasticity in-dex of gold tailings clay mixture materials can be calculated by the plasticity index of gold tailings and clay.The plasticity index of the gold tailings clay mixed materials and the strength of sintered clay bricks was regression ana-lyzed to obtain a sixth order regression equation between the strength of gold tailings clay mixed material sintered bricks and the calculated plasticity index.The blending ratio of the mixed material can be determined based on the required strength of the gold tailings clay mixed material sintered brick,and the strength of the gold tailings clay mixed material sintered brick can also be predicted based on the blending ratio of the mixed material.When prepar-ing sintered bricks with a large amount of gold tailings clay mixture material,under the conditions of gold tailings content greater than 30％and sintered brick strength greater than 10 MPa,it is also necessary to meet the require-ments of a clay the plasticity index of the clay should be greater than 14％,the gold tailings content should be be-tween 30％and 55％,and the plasticity index of the gold tailings clay mixture should be between 12％and 20％.
万方数据
维普
