摘要
以某黄金矿山分级细尾砂为研究对象,在对充填材料基本物理化学性质检测分析的基础上,开展了强度试验和料浆流变特性试验。结果表明:新型胶凝材料固化分级细尾砂效果好,充填体早期强度较传统胶凝材料高,有利于缩短采矿周期。添加新型胶凝材料的分级细尾砂料浆流变曲线符合Herschel-Bulkley(H-B)流变模型,随尾砂浆浓度增加,料浆屈服应力呈指数增长,而塑性黏度缓慢增加;料浆屈服应力随新型胶凝材料掺量增加不断增大,塑性黏度则先增大后降低。
The graded fine tailings from a gold mine were taken for research. After the detection and analysis of the basic physical and chemical properties of backfill materials, tests on backfill body strength and the rheological properties of slurry were performed. The results show that the new cementitious material can bring in good solidification effect for the graded fine tailings, and the strength of the backfill body at the early stage is higher than that with the traditional cementitious materials, which can help to shorten the mining cycle. The rheological curve of the graded fine tailings slurry with the addition of new cementitious materials conforms to the Herschel-Bulkley(H-B) rheological model. With the increase of the tailings concentration, the yield stress of the slurry increases exponentially, while the plastic viscosity increases slowly. And with an increase in the addition amount of new cementitious materials, the yield stress of the slurry increases continuously, but the plastic viscosity decreases after an initial increase.
作者
朱庚杰
齐兆军
寇云鹏
栾黎明
吴再海
ZHU Geng-jie;QI Zhao-jun;KOU Yun-peng;LUAN Li-ming;WU Zai-hai(Shandong Gold Mining Co Ltd,Jinan 250100,Shandong,China;University of Science and Technology Beijing,Beijing 100083,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2020年第4期18-22,共5页
Mining and Metallurgical Engineering
基金
“十三五”国家重点研发计划项目(2018YFC0604603)
中国博士后基金面上资助(2019M652426)。
关键词
胶结充填
充填料浆
胶凝材料
分级细尾砂
抗压强度
H-B流变模型
流变性能
cemented backfill
slurry backfill
cementitious material
graded fine tailings
compressive strength
H-B rheological model
rheological properties