Hydrochloric Acid Regeneration process is the total recovery of metal-free chloride solutions based on the pyrohydrolysis principle.
Pyrohydrolysis is the chemical conversion of metal salts using steam and oxygen at high temperatures. Operators not only recover hydrochloric acid in its free and bonded state, but also obtain high quality iron oxide, either as granules or fine powder.
Using the Fluidized Bed ARP technology, oxide is sintered at a higher temperature forming granules from 0.2μm to 2 mm in size and a specific surface inferior to 1m²/g.
The sintered iron oxide granule is free of dust and contains no chloride. It is easy to store and can either be recycled for steel production (e.g. in the electric arc furnace) or sold as a by-product for which there is a high demand for such applications as production of ferrites, pigments, refractories, and ceramics.

The iron oxide so obtained is very pure and achieves the best prices on the market.
Many years of experience provide Tenova Key Technologies with specialized know-how in fluidized bed technologies which enables it to provide optimized, tailored, and continuously updated solution for each customer.
Recent developments have been patented by design a revolutionary reactor bottom to avoid or minimize shut down periods caused by problems related to the nozzles and the fluidized bed. The new design allows nozzles to be examined and easily replaced.