CAJ | 학술논문

为探究矿石粒径对矿堆内溶液毛细渗流的影响特征，利用所构建的溶液毛细上升实验装置，针对单一粒径矿堆和混合粒径矿堆，分别开展不同矿石粒径下溶液毛细上升实验，得到了溶液毛细上升高度与时间的关系曲线及相应的拟合方程，分析了溶液上升速度随时间变化规律。研究发现：实验初期矿堆内溶液上升速度较快，随着实验时间的增加，溶液上升速度逐渐减小并最终降为零，且溶液最大上升高度及溶液上升速度均与矿石粒径负相关。矿堆内由毛细作用形成的不可动溶液含量随矿石平均粒径的减小而增大，细颗粒矿石含量过多时在矿堆内将形成大范围的不可动溶液区域，影响矿堆内溶液渗透效果。
위탐구광석립경대광퇴내용액모세삼류적영향특정，이용소구건적용액모세상승실험장치，침대단일립경광퇴화혼합립경광퇴，분별개전불동광석립경하용액모세상승실험，득도료용액모세상승고도여시간적관계곡선급상응적의합방정，분석료용액상승속도수시간변화규률。연구발현：실험초기광퇴내용액상승속도교쾌，수착실험시간적증가，용액상승속도축점감소병최종강위령，차용액최대상승고도급용액상승속도균여광석립경부상관。광퇴내유모세작용형성적불가동용액함량수광석평균립경적감소이증대，세과립광석함량과다시재광퇴내장형성대범위적불가동용액구역，영향광퇴내용액삼투효과。
To explore the characteristics of the effect of ore particle size on the capillary flow of solution in an ore heap, solution capillary rise experiments of two groups of ore particles, mono-size and non-uniform, were performed with an established capillary rise experimental device. The relationship of solution capillary rise height with time and the corresponding fitting equations were obtained. The regularity of solution rise velocity with time was analyzed. It is found that at the beginning of the experiment, the ore heap solution rises quickly;with the increase of time, the solution rise velocity decreases and eventually drops to zero; the maximum solution rise height and velocity have negative correlation with ore particle size. Immobile solution content inside the ore heap formed by capillary action increases with the decreasing of average particle size, and a wide range area of immobile solution will form when the content of fine particles in the ore heap is too much, which can influence the solution seepage of the ore heap.