The application discloses a method for comprehensive utilization of
spodumene acid clinker resources, and relates to the technical field of ore
processing. The method of the application not only significantly improves the initial leaching efficiency of
lithium in the
spodumene acid clinker by utilizing residual
lithium in the
sodium precipitation mother liquor, but also ensures that the soluble
lithium remaining in the acid leaching residue is recovered again by utilizing two
solid-liquid separation procedures of leaching and washing, finally controls Li2O in the desulfurization lithium residue to be less than or equal to 0.2%, thereby greatly reducing the loss of lithium in the waste residue and significantly improving the lithium
recovery rate. Meanwhile, the application comprehensively considers the influence of Ca 2+ on the product index of the
silicon-aluminum micro
powder, uses water to stir and wash the acid leaching residue, reduces the Ca 2+ influence, adopts Na2CO3 to react with the stirring and washing filtrate to produce CaCO3 precipitate, and returns the stirring and washing filtrate to the
system again, thereby greatly reducing the
impurity content of the
silicon-aluminum micro
powder, and realizing zero
discharge of process
wastewater through internal circulation, so that the method is suitable for large-scale popularization and application.