The dissolver for milk of lime is a cylindrical tank where are placed lime and water: using a stirrer vane is produced the milk of lime. This system allows to dilute in a homogeneous way the lime and avoid the formation of lumps. The dissolver is completed by a level indicator, placed on the side of the cylinder and from a mouth of inspection placed on the top, in addition to their associated piping flanged of input, outputs and overflow. The materials of construction of the shell are: high-strength steel, AISI304 L, AISI316 L.