Preparation
Lithium orthosilicate can be produced from coal gangue. The specific steps are as follows: after calcination and activation, acid leaching, filtration, water washing, and drying pretreatment, the coal gangue is mixed with lithium carbonate in a solvent at a molar ratio of n:n=1:3.8-4.2. The solvent is then removed, and the resulting solid mixture is calcined to obtain the final product. This method uses solid waste coal gangue as raw material, reducing costs, and the resulting lithium orthosilicate shows good CO absorption performance.
