大冶新矿种尾砂综合利用研究
Study on Comprehensive Utilization of New Tailings in Daye
陈小霞 1黄春源 1熊韶运 2王靖 2刘培正2
作者信息
- 1. 武钢资源集团大冶铁矿有限公司
- 2. 中钢集团马鞍山矿山研究总院股份有限公司;华唯金属矿产资源高效循环利用国家工程研究中心有限公司
- 折叠
摘要
大冶铁矿尾矿产出量大,综合利用率低,大量堆积存在安全风险.通过对大冶新矿种尾砂性能进行研究,提出尾砂综合利用方向.结果表明:尾砂密度为3.20g/cm3,松散密度为1.25 g/cm3,密实密度为1.47 g/cm3,松散孔隙率为61％,密实孔隙率为54.1％,尾砂平均粒径为2.626 μm,级配不佳;尾砂富含大量Fe和SiO2,有害元素S、P含量较少,均少于0.1％,尾砂无放射性污染,同时富含Ti、V、Cr、Ni等多种伴生元素,在种类上属低钙、镁、铝、硅酒钢型铁尾矿.尾砂充填时,采用阴离子1 500万型絮凝剂,用量为40 g/t,推荐充填浓度为76％,灰砂比为1:8.大冶新矿种尾矿通过有价元素及矿物回收、充填矿山采空区、用作元素肥料及土壤改良剂等方式进行回收利用.
Abstract
The tailings of Daye Iron Mine have large output,low comprehensive utilization rate and safety risk.Based on the research on the performance of new tailings in Daye,the comprehensive utiliza-tion direction is put forward.The results show that the tailing density is 3.20 g/cm3,the loose density is 1.25 g/cm3,the dense density is 1.47 g/cm3,the loose porosity is 61％,the dense porosity is 54.1％,the aver-age particle size of the tailing is 2.626 μm,and the grading is poor.The tailing is rich in a large amount of Fe and SiO2,while the contents of harmful elements S and P in the tailing are less than 0.1％,there is no radio-active pollution,and the tailing is rich in Ti,V,Cr,Ni and other associated elements,which belongs to the iron tailings of low calcium,magnesium,aluminum and silicon.In tailings filling,15 million anionic floccu-lant is used as flocculant,the dosage of flocculant is 40 g/t,the recommended filling concentration is 76％,and the ratio of lime to sand is 1:8.The tailings of new ores in Daye are recycled by recovering valuable ele-ments and minerals,filling mined-out areas,and being used as elemental fertilizers and soil amendments.
关键词
尾砂性能/料浆特性/尾砂综合利用Key words
tailing performance/slurry characteristics/comprehensive utilization of tailings引用本文复制引用
出版年
2024
NETL
NSTL
万方数据