摘要
尾矿在尾矿池中大量堆积会对周边环境造成严重的污染。在建筑工程中,由于河砂的日益匮乏,导致砂石涨价、原材料缺乏等,因此,对矿企废弃尾砂替代建筑用砂的可行性研究具有重要的意义。本文采用筛分法、Winner 2000E激光粒度分析仪获取尾砂和河砂的级配信息;使用XPV-909E透反射偏光显微镜采集了尾砂和河砂的形貌特征信息;利用ImageJ软件对所获得的图像信息进行提取。结果表明,尾砂与河砂在颗粒级配、圆度、凸度上有较好的相似性,仅在扁平度和粗糙度上与河砂有微小的差异;细观形态较好的相似性,表明在其他参数相同的情况下,二者在宏观力学上具有一致性,验证了废弃尾砂可替代河砂作为建筑材料使用的可行性。
The massive accumulation of tailings in tailings ponds can cause serious environmental and safety problems in the surrounding areas.Whereas,in the construction industry,the growing scarcity of river sand poses the risk of price increase of sand and lack of raw materials,and thus it is necessary to search for new alternatives to building materials.Therefore,it is of high value in engineering applications to study the feasibility of replacing construction sand with waste tailing sand of mining enterprises.In this paper,by employing the sieving method,with the help of a Winner 2000E laser particle size analyzer,the gradation information of tailings sand and river sand was obtained.An XPV-909E transmission-reflection polarized light microscope was used to collect morphological characteristics information of tailing sand and river sand.The obtained image information was extracted using ImageJ software.The results show that the tail sand has relatively good similarities with the river sand in terms of particle gradation,roundness and convexity,and differs only slightly from the river sand in terms of flatness and roughness.The high similarity in fine morphology indicates that both are consistent in macroscopic mechanics when the other parameters are the same,indicating the feasibility of waste tailing sand as a substitute for river sand as a construction material.
作者
曾绍飞
梁深林
张学鹏
陈青林
罗文杰
ZENG Shaofei;LIANG Shenlin;ZHANG Xuepeng;CHEN Qinglin;LUO Wenjie(School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China)
出处
《江西冶金》
2023年第2期101-105,113,共6页
Jiangxi Metallurgy
基金
国家自然科学基金资助项目(52104085)
大学生创新创业训练计划资助项目(S202110407048)。
关键词
尾矿
图像处理
微观特征
形貌特征
综合利用
tailings
image processing
microscopic features
morphological characteristics
comprehensive utilization
