1. A method of heat-treating the water-absorbent polymer particles at a temperature T, in the range from 100 ° C to 250 ° C, in a fluidized bed dryer by contacting said particles with at least one hot gas stream having a temperature Tg in the range of 100 ° C to 320 ° C, within the chamber fluidization (1) the drying compartment in a drier of fluidized bed, said drying compartment includes at least one fluidizing chamber (1), which opens downwardly toward the at least one lower mixing chamber (2) Th cutting, at least one lower gas distribution grid (3) having openings formed therein for upward flow of gas from said lower mixing chamber (2) into said fluidizing chamber (1), in which the surface velocity of the gas of said hot gas stream in the fluidized bed is in the range of from about 0.1 to about 0.57 m / s2. A method according to Claim. 1, wherein said polymer particles obtained by polymerizing a monomer mixture comprising at least one type of ethylenically unsaturated monomer, preferably acrylic acid, present at least partially in salt form, at least one type of crosslinking agent and at least one type initsiatora.3. A method according to Claim. 1, wherein said polymeric particles comprise a residual amount of water that is less than 12 wt. %, Preferably in the range of from 0.5 to 6 wt. %, Based on the composition, as determined by the standard test EDANA WSP 203.3 (10) .4. A method according to Claim. 1, wherein said polymer particles in the fluidized bed are moved along a substantially horizontal longitudinal axis of the fluidization chamber during the heat treatment, and wherein said at m1. Способ термообработки водопоглощающих полимерных частиц при температуре Tp, в диапазоне от 100°C до 250°C, в сушилке кипящего слоя, посредством контактирования указанных частиц, по меньшей мере, с одним потоком горячего газа, имеющего температуру Tg в диапазоне от 100°C до 320°C, внутри камеры псевдоожижения (1) сушильного отделения в сушилке кипящего слоя, причем указанн
