碱激发黄金尾矿制备胶凝材料的试验研究  

Experimental study on preparation of cementitious materials from alkali-activated gold tailings

作　　者：李进鹏 刘辉 温骁东 Li Jinpeng;Liu Hui;Wen Xiaodong(Canzhuang Gold Mine,Zhaojin Mining Co.,Ltd.)

机构地区：[1]招金矿业股份有限公司蚕庄金矿

出　　处：《黄金》2023年第12期18-22,共5页Gold

摘　　要：基于黄金尾矿资源化利用这一目标,开展了以碱熔后的黄金尾矿和高炉矿渣为原材料制备胶凝材料的试验研究。研究了高炉矿渣掺量对所制备胶凝材料凝固时间、抗压强度、物相组成及水化产物的影响。结果表明:添加高炉矿渣可以显著缩短材料的凝固时间,增加其抗压强度,并且添加30%高炉矿渣时效果最优,28 d抗压强度可达到14.05 MPa。掺入高炉矿渣后,碱激发胶凝材料的水化产物以水化硅酸钙(CSH)和水化硅铝酸钠(NASH)为主。Based on the goal of gold tailings utilization as resources,the preparation of cementitious materials using alkali-melted gold tailings and blast furnace slag as raw materials was experimentally studied.The experiment studied the effect of blast furnace slag content on the solidification time,compressive strength,physical phase composition,and hydration products of the prepared cementitious materials.The results showed that adding blast furnace slag can significantly shorten the solidification time of the material,and increase its compressive strength,and the best effect is achieved when adding 30%blast furnace slag,with a compressive strength of 14.05 MPa at 28 d.After adding blast furnace slag,the hydration products of alkali-activated cementitious materials mainly consist of calcium silicate hydrate(CSH)and Na aluminosilicate hydrate(NASH).

关 键 词：黄金尾矿 胶凝材料 高炉矿渣 碱激发 抗压强度 

分 类 号：TD853.34[矿业工程—金属矿开采]