Patent ID: 11939645
Assignee: INSTITUTE OF CHEMISTRY, CHINESE ACADEMY OF SCIENCES
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A method for extracting lithium from carbonate clay type lithium ore based on ion exchange, the method comprising the following steps:
(1) Crushing: having lithium ore crushed and finely ground;
(2) Roasting treatment: having crushed ore roasted at a temperature of 450-800° C.;
(3) Iron exchange: adding a solution of ferric iron salt to the ore treated as specified in Step (2), and then conducting iron exchange reaction while stifling;
(4) Filtration and separation: conducting solid-liquid separation immediately after the completion of reaction, the filtrate obtained being a lithium-bearing solution.