Process and plant for separating heavy metals from phosphoric starting material
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United States of America Patent
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Dec 12, 2017
Grant Date -
Jun 25, 2015
app pub date -
Jun 21, 2013
filing date -
Jun 21, 2012
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Abstract
A process for separating heavy metals from a phosphoric starting material includes, in a step (i), heating the starting material to a temperature between 700 and 1,100° C. in a first reactor and withdrawing combustion gas. In a step (ii), the heated starting material at the temperature between 700 and 1,100° C. is transferred to a second reactor, chlorides of alkaline and alkaline earth metals are added and process gas is withdrawn.
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