DETOXICATION OF STEEL WASTES BY SULFURATI ON

Faced with the environment protection, the management of steel wastes brings up the problem of the leaching of heavy metals like zinc, lead or cadmium. For dust and sludge intended for landfilling, a reaction o f sulfuration is a way to make inert these elements in the form of ins oluble components. The study of a process concerns the chemical action of polysulfide solutions. The detoxication reality is proved by means of leaching tests. Therefore, an industrial application can be consid ered.