MAKING MINERAL SALTS FROM VARIOUS SOURCES

摘要

Hydrometallurgical systems, methods, and compositions are described in which organic amine-based lixiviants are utilized in the selective recovery of alkaline earth elements. The lixiviant can be regenerated and recycled for use in subsequent iterations of the process. Multiple alkaline earth elements can be recovered from a sample in parallel or in serial applications of the disclosed methods.

主权项

1. A mixture utilized in lixiviant extraction of a metal hydroxide forming species from a raw material comprising:
a raw material comprising an insoluble metal salt, wherein the insoluble metal salt comprises the metal hydroxide forming species; and a lixiviant solution comprising an organic amine cation and a counterion, wherein the lixiviant solution is formulated to transfer the counterion to the insoluble metal salt to form an uncharged organic amine, and wherein the uncharged organic amine is formulated to react with an acid to regenerate the organic amine cation, and wherein the organic amine cation is present in a substoichiometric amount relative to the insoluble metal salt.