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4 FMR
Situation:
As in ore and slag processing there are in several waste mixes, even also in filter dust, metals
in different concentrations and grainsizes contained. Very often there are losses in the fines.
Stockpiles of tailings are existing and waiting for a new processing technology to win the
worthy elements economically. The reason for metal losses in the case of filterdust is a melting
of plastic content by heat if there is a dry processing with fine particles. There for we make the
last step of attrition in wet processing to avoid remelting by temperature influence.
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