Abstract: An apparatus for heat-treating a toner includes a raw-material supply unit configured to supply a toner treatment space with a raw-material toner, a hot-air supply unit configured to heat-treat the raw-material toner in the toner treatment space, a suction and ejection unit configured to eject hot air used for the heat treatment of the raw-material toner, and a waste-heat recovery and supply unit configured to recover heat from the hot air ejected by the suction and ejection unit and supply the hot-air supply unit with the recovered heat.

Abstract: A process for preparing aqueous polymer solutions wherein a section of a fluid conduit through which a stream of liquid polymer product flows contains spaced static mixers. Heated water from a heat exchanger surrounding the section of conduit containing the mixers is introduced to a reactor to function as reaction water. The static mixers are spaced apart enough to enable the heat exchanger to sufficiently cool the liquid polymer product. The mixers function to mix other liquid agents with the liquid polymer product and to mix together warmer and cooler quantities of liquids encountered in the conduit.