B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
B01F23/60—Mixing solids with solids
B01F23/62—Mixing solids with solids using a receptacle with a bottom discharge with oscillating or vibrating opening and closing elements; using a receptacle with a bottom discharge with elements fitted on moving chains