FIELD: treatment of solid dispersed substances with liquid material. SUBSTANCE: apparatus has housing with branch pipes for supplying and discharging of granular material and fluid medium. Mixing device positioned within housing is formed as resilient hose with one end wound onto reversible cylinder and other end hermetically secured on housing inner surface to divide it into two parts, which are communicated via bypass with valve. EFFECT: increased efficiency and improved treatment quality of granular material, reduced metal usage, simplified manufacturing process and operation of apparatus. 1 dwg
