当前位置: X-MOL 学术Particuology › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Enhanced roasting of lepidolite for high defluorination efficiency in a fluidized bed reactor
Particuology ( IF 3.5 ) Pub Date : 2020-01-21 , DOI: 10.1016/j.partic.2019.12.002
Jun Li , Jing Kong , Qingshan Zhu , Hongzhong Li

Defluorination roasting of lepidolite ore in a fluidized bed reactor has been proposed for improving the extraction efficiency of lithium. In this paper, a vacuum was introduced to the fluidized bed reactor, which significantly improved the defluorination efficiency of lepidolite particles. This improvement could be attributed to an increase in the H2O/HF ratio. The highest defluorination rate for the lepidolite particles was obtained in the fluidized bed reactor under vacuum. The rate in the vacuum reactor was 1.5–2 times that in a fixed bed reactor or conventional fluidized bed reactor. The defluorination efficiency of the lepidolite particles also improved and the consumption of steam was greatly reduced by addition of coal char. This enhancement was mainly attributed to changes in the structures of the reduced lepidolite particles. This defluorination roasting method for high lithium extraction with low water steam consumption is a promising method for lithium ore treatment.



中文翻译:

改进的锂云母焙烧,在流化床反应器中实现高脱氟效率

已经提出在流化床反应器中对锂云母矿石进行脱氟焙烧以提高锂的提取效率。在本文中,将真空引入流化床反应器中,这显着提高了锂云母颗粒的脱氟效率。这种改善可以归因于H 2的增加O / HF比。在真空下,在流化床反应器中获得了锂云母颗粒的最高脱氟速率。真空反应器中的反应速率是固定床反应器或常规流化床反应器中反应速率的1.5–2倍。通过添加煤焦,锂云母颗粒的脱氟效率也得到改善,并且蒸汽的消耗大大降低。这种增强主要归因于还原的锂云母颗粒结构的变化。这种用于高锂提取,低水蒸气消耗的脱氟焙烧方法是用于锂矿石处理的有前途的方法。

更新日期:2020-01-21
down
wechat
bug