Patent ID: 11904297
Assignee: ILIAD IP COMPANY, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 30:
31. The process of claim 1 further comprises:
a. intercalating the initial quantity of the Gibbsite-bearing adsorbent precursor with lithium by heating under the alkaline conditions at the predetermined intercalation temperature for a predetermined amount of intercalation time using the pre-intercalation reaction volume of the intercalation reaction liquor to produce the intercalated layered aluminate adsorbent and the pre-intercalation volume of the partially depleted intercalation reaction liquor, wherein the recycled and augmented intercalation reaction liquor comprises a lithium salt in a brine, temperature is between about 85° C. and about 105° C., wherein the lithium salt comprises a concentration ratio of about 1:1 to about 5:1 Li to Al in a NaCl brine, wherein the alkaline conditions comprises an alkaline pH from about 9 to about 12, wherein the alkali has a concentration of greater than 1 to about 3 mol of the alkali per mol of Al(OH)3 in the intercalated layered aluminate adsorbent, and wherein the predetermined amount of intercalation time is between about 1.5 hours and about 6 hours;
b. decanting the post-reaction volume of the depleted intercalation reaction liquor from the intercalated layered aluminate adsorbent;
c. neutralizing the intercalated layered aluminate adsorbent under acidic conditions using the acid at the predetermined neutralization temperature for a predetermined amount of neutralization time to form the lithium selective adsorbent, wherein the neutralization temperature is between about 65° C. and about 80° C., wherein the acid is acetic acid, wherein the acidic conditions comprise a pH from about 5 to about 5.8, wherein the acetic acid has a concentration of between about 5% and about 100%; and wherein the predetermined amount of neutralization time is between about 0.25 hours and about 1 hours;
d. augmenting the decanted intercalation reaction liquor from step b. by adding a NaCl brine, LiCl, and NaOH to reconstitute the pre-intercalation reaction volume of the intercalation reaction liquor, or a combination thereof to the decanted intercalation reaction liquor;
e. recycling the augmented intercalation reaction liquor from step d. in preparation for intercalating the subsequent quantity of the Gibbsite-bearing adsorbent precursor according to step a.