Abstract:
Spent iron electrolyte solutions withdrawn from iron plating baths containing Fe3 are regenerated by centrifugally contacting the electrolyte with a bed of coal particles containing iron sulfides centrifugally fixed on the perforated sidewalls of a rotating reaction chamber. The process causes the rapid reduction of the FeCl3 to FeCl2 with the concomitant removal of the iron sulfides from the coal.
Abstract:
The speed of chemical reaction between liquid and solid particle reactants is materially increased by a process wherein the reactants are charged to a rotating chamber provided with perforated sidewalls, the size of the perforations being less than the size of the particles. The particles are propelled against the walls of the chamber under the action of a centrifugal force created by the rotation of the chamber and are caused to form a continuous layer of particles on the walls of the chamber. The liquid reactant under the action of the same centrifugal force is caused to be propelled into contact with the particle layer and move radially therethrough to react chemically with the particles. The reaction products are then discharged from the chamber through the perforations in the sidewalls. In a preferred embodiment of the invention, spent iron electrolyte solutions withdrawn from iron plating baths are regenerated by centrifugally contacting the electrolyte with a bed of iron particles centrifugally fixed on the perforated sidewalls of a rotating reaction chamber.