MUMBAI, India, Aug. 31 -- Intellectual Property India has published a patent application (202641101267 A) filed by Mdk Sustech Private Limited on August 21, 2026, for System And Method For Recovery Of Valuable Metals And Production Of P- Cam From Black Mass.
Inventors include Gowra Ragupathy Dillip; and Madhavi Mahajanam.
The application for the patent was published on August 28, 2026, under issue no. 35/2026.
Abstract: The present invention discloses a system and method (400) for recovery of valuable metals and production of precursor cathode active material (P-CAM) from spent lithium-ion battery black mass. The process begins by receiving (402), at first-stage selective delithiation and impurity leaching unit (102), spent lithium-ion battery black mass. The process includes selectively leaching (404), by first-stage selective delithiation and impurity leaching unit (102), lithium together with copper and aluminum from the black mass based on organic carboxylic acid with oxidant. The process includes separating (406), by solid-liquid separation unit (104), first-stage leach liquor from delithiated cathode residue and graphite. The process includes recovering (408), by first-stage metal recovery units (106), copper, aluminum and lithium from separated first-stage leach liquor. The process includes processing (414), by mode-selectable downstream recovery unit (118), the second-stage leach liquor in a selected one of: first operating mode (120) and second operating mode (122). FIG. 1
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