Patent ID: 7708257

Claim:
Apparatus for treating solids, comprising: a vessel receiving a solid product and having a bottom; a driveshaft disposed in the vessel; at least one mixing member rotating in a rotation direction and disposed in fixed rotative engagement with the driveshaft, said mixing member having two mixing arms, each said mixing arm including a main vane of generally triangular cross section to define an apex which is directed in the rotation direction of the mixing member, a bottom vane extending the main vane in a direction of the bottom and having a generally rectangular cross section, an adapter piece extending the bottom vane and terminating in a generally cylindrical rod of L-shaped configuration to connect the mixing arm to the driveshaft and to transmit a torque from the driveshaft to the mixing arm; and an end vane disposed at an upper end of the main vane and having a generally rectangular cross section, said end vane extending inwardly from an inner wall of the vessel and formed in one piece with the main vane.