B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
B01F25/30—Injector mixers
B01F25/31—Injector mixers in conduits or tubes through which the main component flows
B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
B01F25/3111—Devices specially adapted for generating foam, e.g. air foam
B01F25/31112—Devices specially adapted for generating foam, e.g. air foam with additional mixing means other than injector mixers, e.g. screen or baffles