| abstract |
A suspension of a solid phase containing at least one calcium compound selected from calcium hydroxide, calcium carbonate and mixtures thereof and at least one magnesium compound selected from magnesium oxide, magnesium hydroxide, at least partly slaked dolomite, and mixtures thereof in the aqueous phase, Making the weight of the solid phase 5 to 15% of the total weight of the suspension; The solid phase in the suspension is carbonated by spraying a CO 2 -containing gas to the suspension heated to a temperature of 55 to 90 ° C at a CO 2 flow rate of 2.5 to 15 dm 3 / min / kg (solid phase of the suspension) Is reduced to a value of less than 9 and the electrical conductivity of the suspension is stabilized and the carbonation is stopped as soon as this electrical conductivity stabilization is observed. |