FIELD: chemistry.
SUBSTANCE: invention can be used for producing hydrated material for reducing content of SO2 in waste gases. In the method of hydrating CaO containing material in form of particles or powder, water is added in an amount sufficient for maintaining partial pressure PH2O, as a function of temperature, within a range defined by the formula 
where PH2O - is partial pressure of water vapour in atm, and T - is temperature in °C. Temperature in the hydration process is kept above 200°C, and partial pressure of water vapour ranging from 0.9 to 1.1 atm. A device is proposed for realising the said method, the obtained product and use of that product.
EFFECT: reduced agglomeration of particles and increased uniformity of their hydration.
13 cl, 4 dwg
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