Abstract: A centrifugal reaction chamber for enhancing the chemical reaction between two or more reactants, one of which is solid particulate material and another of which is a liquid in which the particulate matter is dispersed. The chamber normally is formed by a cylindrical tub having a drive shaft for rotating divider means secured to the shaft and forming one or more radial dividers extending between the shaft and cylindrical wall of the tub. Each divider includes two panels spaced apart and converging in a radial direction away from the shaft. One panel urges the particulate material from the center toward the wall of the tub. The particulate material then is directed back toward the center by the second panel.