北京科技大学学报Issue(11)：1419-1423,5.
絮凝剂用量对尾矿浓密的影响机理
Influence mechanism of flocculant dosage on tailings thickening
摘要
Abstract
Taking copper tailings as an experimental object, dynamic thickening experiments were conducted by adding 0, 10, 25, 40 and 55 g of anionic polyacrylamide (APAM) per tonne of the tailings, respectively. It was found that the thickening concentration of the tailings at the prophase (1 h) increased gradually from 63.98% to 68.20%with increasing flocculant dosage, but at the anaphase (12 h) the value fell slightly when the flocculant dosage increased. In combination with experimental results, the flocculant dosage was divided into four intervals from less to more, low concentration (0 to 10 g per tonne of the tailings), appropriate concentration (10 to 25 g per tonne of the tailings), high concentration (25 to 40 g per tonne of the tailings), and ultrahigh concentration (40 to 55 g per tonne of the tailings). The influence mechanisms of flocculant dosage on tailings thickening in the different intervals were put forward, which present partial adsorption, adsorption bridging, protection, and encapsulation roles, respectively.关键词
尾矿/浓密/絮凝剂/机理Key words
tailings/thickening/flocculant/mechanisms分类
矿业与冶金引用本文复制引用
王勇,吴爱祥,王洪江,刘斯忠,周勃..絮凝剂用量对尾矿浓密的影响机理[J].北京科技大学学报,2013,(11):1419-1423,5.基金项目
“十二五”国家科技支撑计划资助项目(2012BAB08B02)；国家自然科学基金重点资助项目(50934002)；国家自然科学基金资助项目(51374034，51074013，51104011) （2012BAB08B02）
