锂渣的活性激发技术与机理研究进展

Research Progress on Activation Technology and Mechanism of Lithium Slag

锂渣是冶炼锂产品过程中排放的工业固体废物,锂渣长期堆积不仅会造成大量土地资源的浪费,而且也会对周边自然环境造成极大危害,近年来锂渣的活化处理和资源化利用受到了广泛关注。对锂渣的理化性质、活性来源、活性激发技术及机理进行了系统阐述,为今后锂渣的活化研究和大规模利用提供了参考。锂渣中部分SiO_(2)和Al_(2)O_(3)以无定形的形式存在,故具有一定的火山灰活性。尽管不同的活化技术都能激发其潜在活性,但采用单一技术激发锂渣活性时存在活化程度低、激活成本高等问题,因此,未来锂渣活性激发技术应朝着多种激发手段并用的复合活化方向发展。

Lithium slag is the industrial solid waste discharged in the process of smelting lithium prod⁃ucts,its long-term accumulation will not only cause a large amount of waste of land resources,but also cause great harm to the surrounding natural environment.In recent years,the activation treatment and re⁃source utilization of lithium slag have been widely concerned.The physicochemical property,activation ori⁃gin,activation technology and activation mechanism of lithium slag are systematically reviewed in this pa⁃per,which provides a reference for the activation research and large-scale utilization of lithium slag in the future.The part of SiO_(2) and Al_(2)O_(3) in lithium slag exists in amorphous form,so it contains a certain pozzola⁃nic activity.Although different activation technologies can stimulate the potential activity,there are prob⁃lems of low activation degree and high activation cost when using a single technology to stimulate the activity of lithium slag.Therefore,the activation technology of lithium slag should be developed in the direction of composite activation with multiple methods in the future.