文献类型：期刊文献

英文题名：A practice of ultra-fine tailings disposal as filling material in a gold mine

作者：Deng, D. Q. Liu, L. Yao, Z. L. Song, K. I. -I. L. Lao, D. Z.

第一作者：Deng, D. Q.

通信作者：Deng, DQ[1];Liu, L[2]

机构：[1]Guizhou Inst Technol, Inst Min Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Xian Univ Sci & Technol, Energy Sch, Xian 710054, Peoples R China;[3]Minist Educ China, Key Lab Western Mines & Hazards Prevent, Xian 710054, Peoples R China;[4]Changsha Inst Min Res, Changsha 410012, Hunan, Peoples R China;[5]Inha Univ, Dept Civil Engn, Incheon 402751, South Korea;[6]Univ Western Australia, Sch Civil & Resource Engn, Perth, WA 6009, Australia

第一机构：贵州理工学院矿业工程学院

通信机构：corresponding author), Guizhou Inst Technol, Inst Min Engn, Guiyang 550003, Guizhou, Peoples R China;corresponding author), Xian Univ Sci & Technol, Energy Sch, Xian 710054, Peoples R China.|贵州理工学院矿业工程学院;贵州理工学院;

年份：2017

卷号：196

起止页码：100-109

外文期刊名：JOURNAL OF ENVIRONMENTAL MANAGEMENT

收录：;EI(收录号：20233214517084);Scopus(收录号：2-s2.0-85014842816);WOS:【SCI-EXPANDED(收录号:WOS:000401888300012)】；

基金：The authors are grateful for the support provided by the National Natural Science Foundation of China (No. 51674188, 51504182), the Natural Science Basic Research Plan of Shaanxi Province of China (No. 2015JQ5187), the Scientific Research Program funded by the Shaanxi Provincial Education Department (No. 15JK1466), the Project funded by China Postdoctoral Science Foundation (No. 2015M582685), and the Xi'an University of Science and Technology Research Fund Program for Young Scholars (No. 2014-NY-018). This research was also supported by the Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science, ICT and Future Planning (No. NRF-2013R1A1A1060052) and the INHA UNIVERSITY research grant.

语种：英文

外文关键词：Ultra-fine tailings; Cemented backfill station; Cemented backfill technology; Viscous state

摘要：A practice of cemented backfill technology with ultra-fine tailings in a gold mine was comprehensively presented, and a series of tests were conducted in accordance with the peculiar properties of ultra-fine tailings and the mining technology conditions. The test results show that, the tailings from Shuiyindong Gold Mine have a great grinding fineness, with the average particle diameter 22.03 mu m, in which the ultrd-fine particles with the diameter below 20 mu m occupying 66.13%. The analysis results of chemical components of tailings indicate that the content of SiO2 is relatively low, i.e., 33.08%, but the total content of CaO, MgO and Al2O3 is relatively high i.e., 36.5%. After the settlement of 4-6 h, the tailing slurry with the initial concentration of 40% has the maximum settling concentration of 54.692%, and the corresponding maximum settling unit weight is 1.497 g/cm(3). During the field application, the ultra-fine tailings and PC32.5 cement were mixed with the cement-tailings ratios of 1:3-1:8, and the slurry concentration of 50 wt% was prepared. Using the slurry pump, the prepared cemented backfill slurries flowed into the goaf, and then the strength of the cemented backfill body met the mining technique requirements in Shuiyindong Gold Mine, where the ore body has a smooth occurrence, with the average thickness of approximately 2 m and the inclination angle ranging from 5 to 10(omicron). (C) 2017 Elsevier Ltd. All rights reserved.