Patent ID: 11873228
Assignee: nan
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A method of extracting lithium, comprising:
adding a phosphorus source material to a first solution containing a lithium cation (Li+) and an alkaline earth metal cation to produce a lithium precipitate containing magnesium, calcium, strontium, and phosphorus,
wherein the alkaline earth metal cation in the first solution is a magnesium cation (Mg2+), a calcium cation (Ca2+), and a strontium cation (Sr2+),
wherein phosphorus source material is included in an amount of 1 mole to 4 moles based on 1 mole of the lithium cation in the first solution,
wherein the lithium precipitate has a lithium dissolution rate of 60% or more, when calculated according to Equation 2:

Lithium dissolution rate=A/B×100  (Equation 2)

wherein B=Total concentration of lithium cation contained in the lithium precipitate (units: mg/L), A=Total concentration of lithium cation in filtrate obtained by stirring the lithium precipitate in 90° C. water in an amount of 15 times the weight of the lithium precipitate for 60 hours and filtering the slurry (units: mg/L)), and
wherein the total concentration of the alkaline earth metal cations in the first solution is 100,000 mg/L or more.