FIELD: chemistry.
SUBSTANCE: method of obtaining ultradispersive powders of carbonates includes carbonisation of an initial raw material water suspension under conditions of an increase of carbon dioxide pressure with the simultaneous suspension homogenisation. As the initial raw material used are coarsely dispersive powders of respective carbonates of iron, or calcium, or magnesium, or calcium-magnesium, or calcium-iron-magnesium. The carbonisation process is carried out at a temperature of 6-20°C and a short-term to 1 s increase of pressure from 2.6 to 3.0 MPa. A solution of unstable hydrocarbonates is discharged, filtered and subjected to thermal processing at a temperature of 105°C.
EFFECT: invention makes it possible to simplify obtaining ultradispersive carbonates.
1 dwg, 4 ex
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