Patent ID: 11912582
Assignee: DAVY POWERSPORTS INC.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 6:
7. The method of claim 1, further comprising:
responsive to forming a first filtrate combining the first filtrate and a reagent to change the pH of the first filtrate, wherein a second reagent is added until the pH of the first filtrate reaches a second predetermined pH value, wherein the second predetermined pH value is at least one of 4, 9, 11, and 13, to form a second precipitate, wherein the second precipitate comprises at least one of a metal and a rare earth element;
responsive to forming the second precipitate, removing the second precipitate from the first filtrate to form a second filtrate;
responsive to forming the second filtrate, combining the second filtrate and a third reagent to change the pH of the second filtrate, wherein the third reagent is added until the pH of the second filtrate reaches a third predetermined pH value wherein the third predetermined pH value is at least one of 4, 9, 11, and 13, to form a third
precipitate, wherein the third precipitate comprises at least one of a metal and a rare earth element; and
responsive to forming a precipitate, removing the precipitate from the second filtrate to form a third filtrate.