.... The ashes collected were first analyzed to verify the partitioning of heavy metals in different ash streams. They were then subjected to leaching tests to verify the solubility of different components present. There is a growing interest in utilizing wastes, which cannot be recycled for further use...

...N. Tanahashi; A. Takeuchi; K. Tanaka A process has been developed to detoxify the waste magnesia-chromia bricks containing sexivalent chromium and recover valuable materials with arc plasma treatment. Especially magnesium and chromium, which are the major compounds of the waste bricks, could...