Process and plant for separating heavy metals from phosphoric starting material

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United States of America Patent

PATENT NO 10081545
APP PUB NO 20160075555A1
SERIAL NO

14888315

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Abstract

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A process for separating heavy metals from phosphoric starting material comprises the following steps:

    (i) heating the starting material to a temperature of 600 to 1.200° C. in a first reactor (1) and withdrawing combustion gas;(ii) using the combustion gas of step (i) to preheat an alkaline source; and(iii) transferring the heated starting material of step (i) and the heated alkaline source of step (ii) to a second reactor (20), adding an elemental carbon source, heating to a temperature of 700 to 1.100° C. and withdrawing process gas and a product stream.

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Patent Owner(s)

Patent OwnerAddress
METSO METALS OY02230 ESPOO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hermann, Ludwig Auersthal, AT 3 1
Lohrberg, Dirk Offenbach, DE 6 8
Schneider, Günter Lorsch, DE 9 11

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