Process for the treatment of phosphogypsum and in particular phosphogypsum leachate

摘要

Method for treating leachate from a landfill of phosphogypsum or a stack of phosphogypsum comprising the steps of: feeding a continuous flow of said leachate having a dry content of less than 5% by weight to turboconcentrator comprising a cylindrical tubular body with horizontal axis, equipped with inlet and outlet, a heating jacket for bringing the internal wall 5 of the tubular body to a predetermined temperature, a rotor blade, rotatably supported in the cylindrical tubular body where it is rotated to including peripheral speeds between 15 and 40 m / s to disperse said continuous flow of leachate in a flow of particles leached, wherein said particles leached against the heated inner wall of the turbo with formation of a layer of tubular fluid centrifuged highly turbulent, dynamic, thin, advances substantially in contact with said inner wall hac ia said outlet opening, from which discharge flow continuously leached concentrate having a dry content comprised between 20% and 95% by weight.