METHOD FOR THE RECOVERY OF VALUABLE METALS AND ARSENIC FROM A SOLUTION
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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| creator | NUPPONEN, RAIMO MAEKINEN, TUULA ROMPPANEN, JAANA POIJAERVI, JAAKKO |
| 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.
L'invention porte sur un procédé de traitement d'un matériau contenant au moins un métal de valeur et de l'arsenic, et permettant de former un sédiment de scorodite appauvri en métal de valeur et une solution d'eau pure à rejeter. Selon le procédé les métaux de valeur sont d'abord extrait du matériau à traiter, puis on fait précipiter l'arsenic de la solution en deux étapes. Le but du procédé est d'obtenir un sédiment de scorodite aussi pauvre que possible en métaux de valeur. De plus la teneur en métaux de valeur et en arsenic de la solution traitée est si basse qu'elle peut être rejetée dans l'environnement. |
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L'invention porte sur un procédé de traitement d'un matériau contenant au moins un métal de valeur et de l'arsenic, et permettant de former un sédiment de scorodite appauvri en métal de valeur et une solution d'eau pure à rejeter. Selon le procédé les métaux de valeur sont d'abord extrait du matériau à traiter, puis on fait précipiter l'arsenic de la solution en deux étapes. Le but du procédé est d'obtenir un sédiment de scorodite aussi pauvre que possible en métaux de valeur. De plus la teneur en métaux de valeur et en arsenic de la solution traitée est si basse qu'elle peut être rejetée dans l'environnement.</description><language>eng ; fre</language><subject>CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; METALLURGY ; PRETREATMENT OF RAW MATERIALS ; PRODUCTION AND REFINING OF METALS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2006</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20061109&DB=EPODOC&CC=WO&NR=2006117424A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20061109&DB=EPODOC&CC=WO&NR=2006117424A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NUPPONEN, RAIMO</creatorcontrib><creatorcontrib>MAEKINEN, TUULA</creatorcontrib><creatorcontrib>ROMPPANEN, JAANA</creatorcontrib><creatorcontrib>POIJAERVI, JAAKKO</creatorcontrib><title>METHOD FOR THE RECOVERY OF VALUABLE METALS AND ARSENIC FROM A SOLUTION</title><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.
L'invention porte sur un procédé de traitement d'un matériau contenant au moins un métal de valeur et de l'arsenic, et permettant de former un sédiment de scorodite appauvri en métal de valeur et une solution d'eau pure à rejeter. Selon le procédé les métaux de valeur sont d'abord extrait du matériau à traiter, puis on fait précipiter l'arsenic de la solution en deux étapes. Le but du procédé est d'obtenir un sédiment de scorodite aussi pauvre que possible en métaux de valeur. De plus la teneur en métaux de valeur et en arsenic de la solution traitée est si basse qu'elle peut être rejetée dans l'environnement.</description><subject>CHEMISTRY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>METALLURGY</subject><subject>PRETREATMENT OF RAW MATERIALS</subject><subject>PRODUCTION AND REFINING OF METALS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2006</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHDzdQ3x8HdRcPMPUgjxcFUIcnX2D3MNilTwd1MIc_QJdXTycVUAqnH0CVZw9HNRcAwKdvXzdFZwC_L3VXBUCPb3CQ3x9PfjYWBNS8wpTuWF0twMym6uIc4euqkF-fGpxQWJyal5qSXx4f5GBgZmhobmJkYmjobGxKkCADMVLNw</recordid><startdate>20061109</startdate><enddate>20061109</enddate><creator>NUPPONEN, RAIMO</creator><creator>MAEKINEN, TUULA</creator><creator>ROMPPANEN, JAANA</creator><creator>POIJAERVI, JAAKKO</creator><scope>EVB</scope></search><sort><creationdate>20061109</creationdate><title>METHOD FOR THE RECOVERY OF VALUABLE METALS AND ARSENIC FROM A SOLUTION</title><author>NUPPONEN, RAIMO ; MAEKINEN, TUULA ; ROMPPANEN, JAANA ; POIJAERVI, JAAKKO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_WO2006117424A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>2006</creationdate><topic>CHEMISTRY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>METALLURGY</topic><topic>PRETREATMENT OF RAW MATERIALS</topic><topic>PRODUCTION AND REFINING OF METALS</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>NUPPONEN, RAIMO</creatorcontrib><creatorcontrib>MAEKINEN, TUULA</creatorcontrib><creatorcontrib>ROMPPANEN, JAANA</creatorcontrib><creatorcontrib>POIJAERVI, JAAKKO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NUPPONEN, RAIMO</au><au>MAEKINEN, TUULA</au><au>ROMPPANEN, JAANA</au><au>POIJAERVI, JAAKKO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR THE RECOVERY OF VALUABLE METALS AND ARSENIC FROM A SOLUTION</title><date>2006-11-09</date><risdate>2006</risdate><abstract>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.
L'invention porte sur un procédé de traitement d'un matériau contenant au moins un métal de valeur et de l'arsenic, et permettant de former un sédiment de scorodite appauvri en métal de valeur et une solution d'eau pure à rejeter. Selon le procédé les métaux de valeur sont d'abord extrait du matériau à traiter, puis on fait précipiter l'arsenic de la solution en deux étapes. Le but du procédé est d'obtenir un sédiment de scorodite aussi pauvre que possible en métaux de valeur. De plus la teneur en métaux de valeur et en arsenic de la solution traitée est si basse qu'elle peut être rejetée dans l'environnement.</abstract><oa>free_for_read</oa></addata></record> |
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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 | METHOD FOR THE RECOVERY OF VALUABLE METALS AND ARSENIC FROM A SOLUTION |
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