铜业工程Issue(2)：124-130,7.DOI:10.3969/j.issn.1009-3842.2026.02.013
基于某铁矿细粒级尾砂絮凝沉降的试验研究
Experimental Study on Flocculating Sedimentation of Fine-grained Tailings from a Certain Iron Mine
摘要
Abstract
Flocculating sedimentation is a critical step in the thickening and dewatering of tailings during the backfilling process in mines.A certain iron mine in Liaoning has a complex and diverse mineral composition,with a significant proportion of fine-grained tailings,which poses challenges such as slow sedimentation rates and high overflow turbidity for the flocculating sedimentation process.To study the flocculating performance and sedimentation mechanism of tailings from the iron mine,experiments were conducted using whole tailings as the main test material.Results of natural sedimentation and flocculating sedimentation tests were compared.Single-factor method was combined to carry out flocculant selection tests were conducted,with clarity of the supernatant and sedimentation rate being the main evaluation indicators.Ultimately,655S flocculant with the best sedimentation effect was selected for subsequent flocculating sedimentation experiments.By adjusting flocculant unit consumption and filling slurry concentration,the effects of these two factors on the performance of slurry flocculation and sedimentation were analyzed separately.When feed concentration was below 20%,the optimal flocculant addition was controlled in the range of 15±5 g/t,with the underflow concentration reaching 62.61%.Findings of this study provided a theoretical basis for improving the quality and efficiency of fine tailings backfilling in similar mines,and had significant practical value and engineering guidance significance.关键词
全尾砂/絮凝沉降/澄清度/絮凝剂Key words
unclassified tailing/flocculating sedimentation/clarity/flocculant分类
矿业与冶金引用本文复制引用
耿碧瑶,李浩宇,李胜鹏,张欢,温震江..基于某铁矿细粒级尾砂絮凝沉降的试验研究[J].铜业工程,2026,(2):124-130,7.基金项目
国家重点研发计划(2023YFC2907203) （2023YFC2907203）
山东省重点研发计划(2022CXPT032)资助 （2022CXPT032）
