使用聚碳酸超塑性剂的高效调节铜尾矿沉积和质性质
Yingdi Dong1, Zhongbao Hua1, Yong Zeng1
1School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Engineering Research Center of Carbon Emission Reduction in Development and Utilization of Metal Resources, Ministry of Education, Central South University, Changsha 410083, China.
The Science of the total environment
|November 20, 2023
概括
聚碳酸 (PCE) 超塑性剂通过改善细颗粒沉积和泥流动性来增强铜尾矿的处置. 这种新的方法提高了沉积率,减少了送能量,为采矿废物管理提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 铜矿石加工产生细颗粒,需要有效的废弃物处理.
- 传统的花剂可以改善沉积,但会对泥的整形学产生负面影响,增加送成本.
- 尾矿中的亚微米颗粒大小带来了重大处置挑战.
研究的目的:
- 调查使用聚碳酸乙烯 (PCE) 超级可塑剂作为铜尾矿处理中的辅助添加剂.
- 为了同时提高细颗粒沉积效率和泥流动性.
- 解决铜尾矿管理中的传统花剂的局限性.
主要方法:
- 使用聚碳酸 (PCE) 和非离子聚烯胺 (NPAM) 对铜尾矿的协同处理.
- 风病学性质测量,包括产量应力和粗环面积.
- 使用聚焦光束反射率测量 (FBRM) 在现场监测花.
- DLVO理论计算以了解粒子相互作用机制.
主要成果:
- 与单独使用NPAM相比,PCE和NPAM的组合将初始沉积率 (ISR) 提高了3.4倍.
- 产量应力降低了多达8倍,粗环面积降低了10.5倍,显著改善了泥的流动性.
- 添加PCE减少了粒子之间的静电排斥,增强了花的能力,强度和再生.
结论:
- 聚碳酸乙烯 (PCE) 超塑性剂是有效的辅助添加剂,可以快速沉细颗粒泥.
- PCE和NPAM的协同效应提供了改善沉积和增强流动性的双重好处.
- PCE为可持续的铜尾矿处置提供了一种有希望的新方法,减少了运营挑战.
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