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锂渣用作充填胶凝材料试验研究
- 牛禾|伍赠玲|刘强
- 作者单位：
- 厦门紫金矿冶技术有限公司|厦门紫金矿冶技术有限公司|厦门紫金矿冶技术有限公司
基金项目：
- isnull
详细信息：
- 作者简介：
- 牛禾（1992—），男，工程师，博士，研究方向为固废资源化利用；E-mail：niuhebham@outlook.com
- 通讯作者：
- isnull
- PDF下载
Experimental study on the use of lithium residue as cementitious filling material
- English Author：
- Xiamen Zijin Mining ＆ Metallurgy Technology Co.,Ltd.|Xiamen Zijin Mining ＆ Metallurgy Technology Co.,Ltd.|Xiamen Zijin Mining ＆ Metallurgy Technology Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
锂渣是铁锂云母生产碳酸锂过程中产生的固体废物，通常富含氧化硅、氧化铝、氧化钙和氧化铁，同时焙烧后的锂渣可产生玻璃相，是制备建筑材料的潜在前驱体。通过检测锂渣的物理化学特性，设计了激发剂改善锂渣-水泥充填配比试验，测试充填体7 d和28 d抗压强度，并利用Design-Expert软件优化混料配方。结果表明，优化后的锂渣充填体28 d抗压强度达到充填要求，其可替代水泥作为井下充填胶凝材料，降低充填成本，实现固废资源化利用。
关键词:
锂渣；胶凝材料；井下充填；火山灰活性；固废资源化
Abstract:
Lithium residue is a solid waste generated in the production of lithium carbonate from zinnwaldite,typically rich in silicon dioxide,aluminum oxide,calcium oxide,and iron oxide.Moreover,lithium residue after calcination can produce a glassy phase,which is a potential precursor for preparing construction materials.By testing the physical and chemical property of lithium residue,experiments were designed to improve the filling ratio of lithium residue-cement using an activator.The compressive strength of the filling body at 7 d and 28 d was tested,and the mixture formula was optimized using Design-Expert software.The results show that the compressive strength of the optimized lithium residue filling body meets the filling requirements at 28 d,indicating its potential to substitute cement as underground filling and cementitious material,thus reducing filling costs and realizing the utilization of solid waste resources.
Keywords:
lithium residue;cementitious material;underground filling;volcanic ash activity;recycling of solid waste
