A belt dryer arrangement for drying an aqueous polymer gel and for comminuting the dried polymer gel to give dried polymer particles, comprising: - a dryer setup for drying an aqueous polymer gel, - a comminuting arrangement downstream of the dryer setup relative to the product flow direction, for comminuting the dried polymer gel to give dried polymer particles, - a grinding facility for grinding comminuted dried polymer particles from the comminuting arrangement, - a pneumatic conveying facility where - the comminuting arrangement is disposed immediately downstream of the dryer setup relative to the product flow direction or is mounted on the dryer setup, and - the comminuting arrangement comprises at least a first comminutor (38.1) and a second comminutor, each having a rotatable shaft with functional tools, the second comminutor (38.2) being disposed downstream of the first comminutor (38.1) relative to the product flow direction, where - the first comminutor (38.1) is located immediately after the dryer setup for comminuting the dried polymer gel to give dried polymer particles, and the first comminutor (38.1) is configured as a crusher, or the first comminutor (38.1) is configured as a cross-vane comminutor, and where the second comminutor for receiving free-falling precomminuted dried polymer particles from the first comminutor is located immediately below the first comminutor, where - the comminuting arrangement, specifically the second comminutor (38.2), is configured for comminuting the precomminuted dried polymer particles to give finely comminuted dried polymer particles having a mass-average particle diameter of between 1 mm and 9 mm, and - the comminuting arrangement is disposed upstream of the pneumatic conveying facility and upstream of the grinding facility relative to the product flow direction, where the pneumatic conveying facility is located between the comminuting arrangement and the grinding facility, and - the grinding facility is configured for grinding comminuted dried polymer particles from the comminuting arrangement to give dried, comminuted and ground polymer particles having a mass-average particle diameter of 250 um to 700 μm. - a dryer setup for drying an aqueous polymer gel, - a comminuting arrangement downstream of the dryer setup relative to the product flow direction, for comminuting the dried polymer gel to give dried polymer particles, - a grinding facility for grinding comminuted dried polymer particles from the comminuting arrangement, - a pneumatic conveying facility where - the comminuting arrangement is disposed immediately downstream of the dryer setup relative to the product flow direction or is mounted on the dryer setup, and - the comminuting arrangement comprises at least a first comminutor (38.1) and a second comminutor, each having a rotatable shaft with functional tools, the second comminutor (38.2) being disposed downstream of the first comminutor (38.1) relative to the product flow direction, where - the first comminutor (38.1) is located immediately after the dryer setup for comminuting the dried polymer gel to give dried polymer particles, and the first comminutor (38.1) is configured as a crusher, or the first comminutor (38.1) is configured as a cross-vane comminutor, and where the second comminutor for receiving free-falling precomminuted dried polymer particles from the first comminutor is located immediately below the first comminutor, where the first comminutor (38.1) is configured as a crusher, or the first comminutor (38.1) is configured as a cross-vane comminutor, and where the second comminutor for receiving free-falling precomminuted dried polymer particles from the first comminutor is located immediately below the first comminutor, where - the comminuting arrangement, specifically the second comminutor (38.2), is configured for comminuting the precomminuted dried polymer particles to give finely comminuted dried polymer particles having a mass-average particle diameter of between 1 mm and 9 mm, and - the comminuting arrangement is disposed upstream of the pneumatic conveying facility and upstream of the grinding facility relative to the product flow direction, where the pneumatic conveying facility is located between the comminuting arrangement and the grinding facility, and - the grinding facility is configured for grinding comminuted dried polymer particles from the comminuting arrangement to give dried, comminuted and ground polymer particles having a mass-average particle diameter of 250 um to 700 μm.