Patent ID: 11873541
Assignee: JIANGXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  G  Y | IPC C  G

Claim 1:
2. The method for determining the source sink term in the ionic type rare earth ore leaching process according to claim 1, wherein the method of the step one comprises:
taking the ammonium sulfate as the ore leaching agent, selecting 20.0 g of the rare earth ore sample;
performing ore leaching with an ammonium sulfate solution at a concentration of 20.0 g/L according to a liquid-to-solid ratio of 5:1 mL/g;
oscillating the solution at first for 2.0 h, and then stewing the solution for 0.5 h;
performing solid-liquid separation on the solution with medium speed filter paper;
rinsing tailings with 100 mL of the ammonium sulfate solution at the concentration of 20 g/L;
testing the total mass of the leached rare earth ions by EDTA titrimetry; and
calculating the rare earth grade of the rare earth ore sample with the relational expression (1).