白象山铁矿微细粒级尾砂分级胶结充填试验研究  

Experimental Study on Graded Cementation Filling of Micro-fine Particle Tailing Sand in Baixiangshan Iron Mine

作　　者：沈斌 王荣林 冯建 杨松付 李明军 纪芳 SHEN Bin;WANG Ronglin;FENG Jian;YANG Songfu;LI Mingjun;JI Fang(Group Gushan Mining Co.,Ltd.,Anhui Masteel Mining Resources)

机构地区：[1]安徽马钢矿业资源集团姑山矿业有限公司,安徽省马鞍山市243181

出　　处：《现代矿业》2022年第12期202-205,209,共5页Modern Mining

摘　　要：为改进白象山铁矿充填料浆流动性、沉降性以及充填体的强度等性能,开展了微细粒级尾砂分级胶结充填试验。结果表明:①产率35%和50%的分级尾砂属于粗粒尾砂,可直接制备充填料浆,其中产率50%的分级尾砂级配最佳。②随着尾砂分级产率的提高,泌水率及沉降速率呈下降趋势,且产率为50%以上时对沉降速率影响较大,反之较小。③产率50%的分级尾砂料浆流动性较好,满足自流输送的要求。④分级尾砂充填体强度比全尾砂胶结试块高,产率50%时达到最高,全尾砂最小。In order to improve the fluidity,sedimentation and strength of the filling slurry for Baixi⁃angshan iron ore,the micro-fine particle tailings graded cementation filling test was carried out.The results showed that:①the graded tailings with a yield of 35%and 50%belong to coarse-grained tailings,and can be used for filling slurry preparation directly,among which the graded tailings with a yield of 50%is the best.②With the increase of the graded yield of tailings,bleeding rate and sedimentation rate showed a downward trend.And it appeared greater impact on the sedimentation rate when the yield is more than 50%,and vice versa is smaller.③The graded tailings slurry with a yield of 50%has good fluidity and meets the requirements of self-flowing transportation.④The strength of the graded tailings filling body is higher than that of the whole tailings cementation test block,and the highest is reached when the yield is 50%,and the total tailings is the smallest.

关 键 词：高浓度胶结充填 细粒级尾砂 旋流器分级 抗压强度 流动性 

分 类 号：TD853.34[矿业工程—金属矿开采]