Menetelmä arvometallien ja arseenin talteenottamiseksi liuoksesta

Menetelmä arvometallien ja arseenin talteenottamiseksi liuoksesta

The invention relates to a method for the treatment of material containing at least one valuable metal and arsenic to form a valuable metal-depleted scorodite sediment and a pure aqueous solution to be discharged from the process. According to the method, the valuable metals are first removed from t...

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Hauptverfasser: MAEKINEN,TUULA, POIJAERVI,JAAKKO TEIJO ILMARI, ROMPPANEN,JAANA, NUPPONEN,RAIMO
Format: Patent
Sprache:fin ; swe
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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creator MAEKINEN,TUULA
POIJAERVI,JAAKKO TEIJO ILMARI
ROMPPANEN,JAANA
NUPPONEN,RAIMO
description The invention relates to a method for the treatment of material containing at least one valuable metal and arsenic to form a valuable metal-depleted scorodite sediment and a pure aqueous solution to be discharged from the process. According to the method, the valuable metals are first removed from the material to be treated and then arsenic precipitation from the solution is performed in two stages. By means of the method, the aim is to obtain as low a valuable metal content as possible in the scorodite sediment that will be formed. Likewise, the arsenic and valuable metal content of the aqueous solution that is formed during arsenic precipitation also remains so low that the water can be released into the environment.
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subjects CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
title Menetelmä arvometallien ja arseenin talteenottamiseksi liuoksesta
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