FIELD: chemistry.
SUBSTANCE: invention relates to methods of making sorbents from natural raw material. Gaize from Astrakhan Region, containing the following (wt %) is crushed: SiO2 - 78-80; Al2O3 - 18-22; Fe2O3 - 0.5; H2O - 0.2-0.5; CaSO4 - 0.3-0.5; CaCO3 - 0.12-0.8, particles with diametre 3-10 mm are separated, washed with water until dust is removed and dried at 100-105°C to residual moisture of 2%.
EFFECT: obtaining ecologically clean sorbent.
5 tbl
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