LIU Xuan1, LI Ruyan2, CUI Xiaowei1, XIE Zhemin1, LI Zhigang1
(1. Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shangluo 726000, China;2. National Engineering Research Center of Waste Resource Recovery, Kunming 650093, China)
Abstract: This paper studied the effect of mechanical force on the particle size and activity of gold tailings based on the mechanical force activation method and theory, the morphology and phase analysis of which were conducted with SEM and XRD respectively. The result shows that the gold tailings chosen are relatively easy to grind and the particle distribution is greatly affected by mechanical force with the minimum particle size of 5 μm in an activation time of 80 min; its activation property increases with the rise of the acting time, reaching its maximum at 80 min of action; the data of 28 d compressive strength and activity index of the test block mortar reach their peak of 35.33 MPa and 78.62% respectively at 80 min of action, then decrease with the occurrence of weak agglomeration.
Keywords: gold tailings; mechanical force; particle size; activation property
中图分类号：TD982
文献标志码：A
收稿日期： 2018-10-24，修回日期：2018-12-22，在线出版时间：2019-01-10 13:51。
基金项目：陕西省自然科学基础研究计划项目，编号：2017JM5145；国家级大学生创新创业训练计划项目，编号：201811396020；陕西省尾矿资源综合利用重点实验室开放基金，编号：2017SKY-WK009。
第一作者简介：刘璇(1989—)，男，硕士，讲师，研究方向为废弃物综合利用研究，E-mail:mmjcs168@qq.com。
通信作者简介：李如燕(1969—)，女，博士，研究员，研究方向为废弃物资源化利用研究，E-mail:ruyanli@kmust.edu.cn。
文章编号：1008-5548(2019)02-0042-05
DOI:10.13732/j.issn.1008-5548.2019.02.008
