矿产保护与利用2024，Vol.44Issue(6)：71-79,9.DOI:10.13779/j.cnki.issn1001-0076.2024.06.006
银山矿超细全尾砂精细化絮凝沉降实验研究
Experimental Study on Refined Flocculation and Settlement Parameters of Ultrafine Unclassified tailings from Yinshan Mine
摘要
Abstract
The tailings from the Yinshan Mine contain approximately 51%ultrafine particles of less than 19 μm,presenting significant challenges to the thickening and dewatering processes.In particular,the effectiveness of deep cone thickeners is particularly affected by seasonal variations and the quality and concentration of the tailings feed.In order to improve the settlement performance of the deep cone thickener at the Yinshan Mine.Comprehensive experiments were conducted,including physical and chemical property tests,laboratory-scale flocculation settlement experiments,and semi-industrial experimental focusing on the flocculation of ultrafine unclassified tailings.The results showed that DR1030 proved to be the optimal flocculant.At a tailings slurry concentration of 10%,the consumption of DR1030 was 30.0 g/t in summer and 33.0 g/t in other seasons;at a 15%slurry concentration,the consumption was 35.0 g/t in summer and 38.0 g/t in other seasons.Under semi-industrial experimental conditions,the actual consumption of DR1030 was 34.0 g/t,which was 4.4 g/t less than that of the existing flocculants.Furthermore,the underflow concentration with DR1030 exhibited more stable and higher mass concentration,which was improved by 2.6%.Slump flow measurement demonstrated that DR1030 had no significant effect on the fluidity of the slurry.This study provides critical process parameters that can improve cemented paste backfill quality at the Yinshan Mine,as well as valuable insights for similar mining operations.关键词
膏体充填/超细尾砂/絮凝沉降/底流浓度/深锥浓密机Key words
cemented paste backfill/ultrafine tailings/flocculation settlement/underflow concentration/deep cone thickener分类
矿业与冶金引用本文复制引用
丁家铎,李红鹏,宋子安,陈秋松..银山矿超细全尾砂精细化絮凝沉降实验研究[J].矿产保护与利用,2024,44(6):71-79,9.基金项目
国家重点研发计划青年科学家项目((2021YFC2900400) （(2021YFC2900400）
