某微细粒金尾矿的沉降试验及澄清距离的计算

通过沉降试验测定了某微细粒金尾矿在不同浓度和不同沉降方式下的沉降速度，并利用测定结果和矿山提供的有关资料计算了该尾矿在不同矿浆浓度、不同沉降方式和不同排放管路布置方式下向尾矿库排放时的澄清距离。试验结果表明：自然沉降时，该尾矿在不同浓度下的沉降速度均很低；添加3号絮凝剂可提高尾矿、尤其是低浓度尾矿的沉降速度。计算结果表明，降低矿浆浓度、添加絮凝剂及大间距多支路放矿均可有效缩短尾矿在尾矿库中的澄清距离。研究结果为矿山选择合适的尾矿排放方案提供了依据。

Sedimentation Tests on a Fine-grained Gold Tailing and Calculation of the Transparent Distance

From sedimentation tests，the settling distance under different concentration and different settling way for a fine-grained gold tailing are measured，and then the transparent distance of discharging to the tailing pond under different pulp concentration，different settling means and different discharging pipe arrangement are calculated based on the measurement results and some related materials provided by mine.The results showed that the settling velocity of tailings at different concentrations is very low as natural subsidence.The settling velocity for tailings，especially for low concentration tailings can be increased by adding No.3 flocculants.The calculation results showed that the transparent distance in tailing pond was effectively shortened by reducing the slurry concentration，adding flocculants and large spacing tailing discharging.This result provides a basis for selecting a suitable tailing discharging disposal options for mine.