A method for extracting lithium from lithium chlorite-type lithium resources by acid leaching based on chlorination roasting

Abstract

The present application belongs to the technical field of lithium extraction from lithium chlorite type lithium resources, and particularly relates to a method for extracting lithium from lithium chlorite type lithium resources by acid leaching after chlorination roasting, which comprises the following steps: crushing, grinding and drying lithium chlorite type lithium-containing ores; mixing the ore powder, calcium chloride and coke in a certain proportion and then performing roasting treatment; adding a sulfuric acid solution to the roasted clinker for leaching, and obtaining a lithium leaching solution after solid-liquid separation. The method can obtain a solution with high lithium content while avoiding the generation of a large amount of strong acid waste liquid.