硅锰渣人造骨料的制备工艺及性能  

Preparation Technology and Properties of Silicon-Manganese Slag Artificial Aggregate

作　　者：徐智超 邢质冰 韩凤兰[1,2,3] 田九良 李茂辉 撒浩天[1] 周雨楼 XU Zhichao;XING Zhibing;HAN Fenglan;TIAN Jiuliang;LI Maohui;SA Haotian;ZHOU Yulou(Institute of Materials Science and Engineering,North Minzu University,Yinchuan 750021,China;Industrial Waste Recycling and International Cooperation Base for Advanced Materials,Yinchuan 750021,China;High-value Utilization of Industrial By-products Collaborative Innovation Center,Yinchuan 750021,China)

机构地区：[1]北方民族大学材料科学与工程学院,银川750021 [2]工业废弃物循环利用及先进材料国际合作基地,银川750021 [3]工业副产物高值化利用协同创新中心,银川750021

出　　处：《有色金属工程》2022年第12期142-152,共11页Nonferrous Metals Engineering

基　　金：宁夏回族自治区级大学生创新创业训练计划项目(S202111407001);宁夏回族自治区重点研发项目(2021BEG01003);北方民族大学重点科研项目(2021KJCX06)。

摘　　要：采用冷黏结法制备硅锰渣人造骨料,通过探究造粒机倾角、频率和成球时间对硅锰渣骨料性能及粒径分布的影响,确定出最佳造粒工艺条件倾角为50°、频率为15 Hz、成球时间为70 min。在此基础上研究了固体和液体碱激发剂加入量、养护温度和两种硅锰渣类型(TYGM、BLGM)对骨料性能的影响,并按照GB/T 17431.2—2010测试骨料的性能。结果表明,当液体激发剂、固体激发剂加入量分别为16.2%、20%,养护温度为室温时,制备出的骨料性能最优,其堆积密度分别为1397.5、1422.7 kg/m^(3),7 d吸水率分别为5.3%、5.4%,7 d筒压强度分别为17.6、8.9 MPa。由TYGM制备的骨料单球强度优于BLGM,TYGM在112 d时骨料强度达到最大为18.88 MPa,而BLGM在119 d时骨料强度达到最大为13.31 MPa。The cold bonding method was used to prepare silico-manganese slag artificial aggregate.By exploring the influence of granulator inclination angle,frequency and pelletizing time on the performance and particle size distribution of silico-manganese slag aggregate,the optimal granulation process condition was determined as the inclination angle 50°,frequency 15 Hz and ball formation time 70 min.On this basis,the effects of solid and liquid alkali activator additions,curing temperature and two kinds of silicon-manganese slag on aggregate properties were studied.The results show that when the liquid activator and solid activator are added in an amount of 16.2%and 20%,respectively,and the curing temperature is room temperature,the prepared aggregate has the best performance.The compressive strength of the 7 day cylinder is 17.6—8.9 MPa.The single ball strength of the aggregate prepared from TYGM is better than that of BLGM.The aggregate strength of TYGM reaches a maximum of 18.88 MPa at 112 d,while that of BLGM reaches a maximum of 13.31 MPa at 119 d.

关 键 词：冷黏结法 人造骨料 筒压强度 

分 类 号：X753[环境科学与工程—环境工程]