The invention relates to a
magnesium-containing
raw material recycling treatment method. The
magnesium-containing
raw material recycling treatment method comprises the steps that S1,
magnesium reaction liquid containing
sulfate and a magnesium cosolvent are mixed with magnesium-containing raw materials to perform reaction, the
reaction system PH value is controlled to be less than 9.0, and after the reaction is finished,
solid-liquid separation is performed to obtain a magnesium-containing solution A1 and
calcium-containing residue B1; S2, the magnesium-containing solution A1 is reacted with aprecipitant, the
reaction system PH value is controlled to be 5.5-12.0, and after the reaction is finished, the
solid-liquid separation is performed to obtain a magnesium
sediment solution A2 and magnesium-containing
sediment B2; S3,
calcium reaction liquid containing a
calcium solvent, a calcium cosolvent and the
sulfate is mixed with the calcium-containing residue B1 to perform the reaction, the
reaction system PH value is controlled to be 5.5-12.0, and after the reaction is finished, the
solid-liquid separation is performed to obtain a calcium-containing solution A3 and
tail residue B3; and S4, the PH value of the calcium-containing solution A3 is adjusted to be 4.0-9.5, calcium
sulfate is made to precipitate from the calcium-containing solution A3, and the solid-liquid separation is performed to obtain a calcium
sediment solution A4 and calcium-containing sediment B4 containing the calcium sulfate. By means of the magnesium-containing
raw material recycling treatment method, underthe condition of not consuming additional raw materials, magnesium, calcium and impurities in low-grade magnesium-containing raw materials are separated, corresponding calcium and magnesium productsare obtained, the magnesium resource recycling cost is reduced, and environmental
pollution is reduced.