A METHOD FOR PROCESSING LITHIUM IRON PHOSPHATE BATTERIES

摘要

A method of processing a black mass material feed material can include a)receiving a black mass material feed material; b) acid leaching the black mass material at a pH that is less than 4, thereby producing a pregnant leach solution (PLS) comprising at least 80% the lithium from the black mass feed material, and at least a portion of the iron and the phosphorous from the black mass feed material; providing a first intermediary solution after completing step b); and separating at least 90% of the iron and the phosphorous from the first intermediary solution to provide an output solution.