Process for treating heavy ash or slag in general

A process for treating heavy ash or slag in general, characterised by mixing, in the interior of a rotating body, the heavy ash and/or slag and a water quantity in a weight ratio between 0.8 and 2, while simultaneously passing into the rotating body a flow of gaseous CO 2 in a concentration between...

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Bibliographic Details
Main Authors ZAMBELLI, ALESSIO, BOSCHI, GIORGIO
Format Patent
LanguageEnglish
French
German
Published 21.05.2014
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Summary:A process for treating heavy ash or slag in general, characterised by mixing, in the interior of a rotating body, the heavy ash and/or slag and a water quantity in a weight ratio between 0.8 and 2, while simultaneously passing into the rotating body a flow of gaseous CO 2 in a concentration between 90 and 100% v/v for a period not exceeding 2 hours, on termination of the mixing stage the material being passed through at least one screen by which it is separated into ash of diameter greater than 5 mm and a mixture of water and ash with the ash of diameter less than 1 mm, said ash greater than 5 mm being subjected to deferrization treatment, to be then fed to a temporary store, the mixture of water and ash less than 1 mm being subjected to filtration treatment, the filtrate from which consists of a fine fraction of washed and carbonated slag, the water, containing salts washed from the slag and certain heavy metals, being fed to a water purification plant.
Bibliography:Application Number: EP20120192732