Patent ID: 9695490
Date: 2017-07-04
CPC Classifications: C22B,Y02P

Claim:
1. A method for extracting an alkaline earth element, comprising: contacting a sample comprising a first alkaline earth element with an uncharged first lixiviant precursor comprising an uncharged organic amine; mixing the sample with the first lixiviant precursor; after mixing the sample with the first lixiviant precursor, generating a first lixiviant comprising a first organic amine cation and a first counterion from the first lixiviant precursor by addition of an acid form of the first counterion; forming a depleted sample and a first supernatant comprising a first uncharged organic amine, and a first soluble complex comprising a cation of the first alkaline earth element and the first counterion; transferring the first alkaline earth element cation from the first supernatant; and regenerating the first organic amine cation by the addition of a first precipitant, wherein the first organic amine cation comprises carbon.