黄金科学技术 ›› 2024, Vol. 32 ›› Issue (3): 437-444.doi: 10.11872/j.issn.1005-2518.2024.03.100
张涛1,2,3(),李德贤1,2,3,张鹏强1,2,3,赵国亮1,2,3,何宇1,2,3,牛猛3,俞军真1,2,3
Tao ZHANG1,2,3(),Dexian LI1,2,3,Pengqiang ZHANG1,2,3,Guoliang ZHAO1,2,3,Yu HE1,2,3,Meng NIU3,Junzhen YU1,2,3
摘要:
为实现固废循环利用,降低尾砂和镍渣的固废堆存,开展了镍渣—全尾砂混合骨料配比试验。通过扫描电镜和X射线荧光光谱测定(XRF)方法分析了镍渣和全尾砂的粒级分布和化学成分,利用骨料堆积密实度理论确定了镍渣—尾砂的配比优化范围为4∶6、5∶5和6∶4;考虑料浆的流动性、和易性及充填体强度,最终推荐镍渣—全尾砂的最优配合比为5∶5,料浆的质量浓度为77%~79%,水泥添加量为310 kg/m3;针对镍渣—全尾砂充填,镍渣利用量最高不超过50%,最大质量浓度为79%,对应的剪切应力为112.634 Pa,黏度为0.938 Pa·s。
中图分类号:
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