China is extremely poor in mineral resources of Platinum Group Metals (PGMs), productive output of PGMs from mineral resource is 2.5 tons per year. At the same time, China is the biggest PGMs consumption country in th...China is extremely poor in mineral resources of Platinum Group Metals (PGMs), productive output of PGMs from mineral resource is 2.5 tons per year. At the same time, China is the biggest PGMs consumption country in the world, the mineral resource of PGMs is critical shortage, it shows the importance of recycling the secondary resource of PGMs. Sino-Platinum Metals Resource (Yimen) Co., Ltd. is the leader in recycling of PGMs from secondary resource, and has made outstanding contributions to China PGMs secondary resources recycling. This article elucidates the current situation of secondary resources recovery and development of metallurgical technology for PGMs.展开更多
为了开发一种高效的锂吸附材料,从四川盆地页岩气废水(Shale Gas Wastewater,SGW)中回收锂资源,以应对电动汽车和储能行业对锂电池需求的急剧上升,研究通过固相反应合成H_(1.33)Mn_(1.67)O_(4)(HMO),并将壳聚糖(Chitosan,CTS)作为造粒剂...为了开发一种高效的锂吸附材料,从四川盆地页岩气废水(Shale Gas Wastewater,SGW)中回收锂资源,以应对电动汽车和储能行业对锂电池需求的急剧上升,研究通过固相反应合成H_(1.33)Mn_(1.67)O_(4)(HMO),并将壳聚糖(Chitosan,CTS)作为造粒剂,制备复合材料CTS/HMO。在SGW中,CTS/HMO对锂的吸附质量比达到7.83 mg/g,经5次吸附-解吸循环后吸附质量比仅下降1.25%,表现出较高的稳定性。动力学研究显示,准二级动力学模型更符合试验结果,表明吸附过程主要由化学吸附控制。等温吸附试验结果显示,CTS/HMO的吸附行为符合Langmuir模型,表明其为单层吸附。选择性试验进一步验证了CTS/HMO对锂的良好选择性,这归因于HMO尖晶石结构的离子筛效应。在固定床过滤试验中,流速为0.104 mL/min,床层总容积为7.7 cm^(3)时,该材料约在2950 min后达到饱和,显示出良好的吸附寿命;对不同流速下的固定床吸附进行Thomas模型拟合,结果显示较低流速下的吸附质量比较大。研究表明,CTS/HMO是一种具有良好前景的工业级锂吸附剂,适用于从SGW中提取锂资源,可为实现资源的可持续利用和环境保护提供新技术。展开更多
基金the National High Technology Research and Development Program of China(863 Program) (2012AA063203)Funded by Science and Technology Department of Yunnan Province (2011AA004)
文摘China is extremely poor in mineral resources of Platinum Group Metals (PGMs), productive output of PGMs from mineral resource is 2.5 tons per year. At the same time, China is the biggest PGMs consumption country in the world, the mineral resource of PGMs is critical shortage, it shows the importance of recycling the secondary resource of PGMs. Sino-Platinum Metals Resource (Yimen) Co., Ltd. is the leader in recycling of PGMs from secondary resource, and has made outstanding contributions to China PGMs secondary resources recycling. This article elucidates the current situation of secondary resources recovery and development of metallurgical technology for PGMs.
