Method and system for recycling copper zinc and cyanide from copper-bearing gold ore cyanide gold refining
The invention provides a method and system for recycling copper zinc and cyanide from high-copper gold ore cyanide gold refining. Sodium cyanide is adopted to leach copper-bearing gold ore, ultrafiltration and nanofiltration membrane concentration are carried out on a leaching agent, concentrated ac...
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| creator | YUAN XINBO XIE ZUNING CHENG TAO |
| description | The invention provides a method and system for recycling copper zinc and cyanide from high-copper gold ore cyanide gold refining. Sodium cyanide is adopted to leach copper-bearing gold ore, ultrafiltration and nanofiltration membrane concentration are carried out on a leaching agent, concentrated acid and dissolvable sulfide are sequentially put into concentrated liquor, Cu2S (copper sludge) is produced, the copper sludge can be recycled after water removal, and copper-dissolved sodium cyanide is recycled synchronously; lime milk is added into a liquid supernatant to adjust the pH value, the liquid supernatant obtained after solid-liquid separation is mixed with the nanofiltration membrane leaching agent, and then has a replacement reaction with zinc powder to generate gold, ultrafiltration and nanofiltration membrane concentration are carried out on a barren solution, concentrated acid and soluble sulfide are put into concentrated liquor sequentially, ZnS (zinc sludge) is generated, and recycled after water removal, and zinc-dissolved cyanide is recycled synchronously; and the lime milk is added into the liquid supernatant to adjust the pH value, and the liquid supernatant obtained after solid-liquid separation is mixed with the nanofiltration membrane leaching agent and returns to a leaching pool. The copper zinc and the cyanide are recycled, and therefore the problem that copper-bearing gold ore is high in leaching cost is solved; and meanwhile, the zero discharging of the cyanide liquid in the whole technology is achieved. |
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Sodium cyanide is adopted to leach copper-bearing gold ore, ultrafiltration and nanofiltration membrane concentration are carried out on a leaching agent, concentrated acid and dissolvable sulfide are sequentially put into concentrated liquor, Cu2S (copper sludge) is produced, the copper sludge can be recycled after water removal, and copper-dissolved sodium cyanide is recycled synchronously; lime milk is added into a liquid supernatant to adjust the pH value, the liquid supernatant obtained after solid-liquid separation is mixed with the nanofiltration membrane leaching agent, and then has a replacement reaction with zinc powder to generate gold, ultrafiltration and nanofiltration membrane concentration are carried out on a barren solution, concentrated acid and soluble sulfide are put into concentrated liquor sequentially, ZnS (zinc sludge) is generated, and recycled after water removal, and zinc-dissolved cyanide is recycled synchronously; and the lime milk is added into the liquid supernatant to adjust the pH value, and the liquid supernatant obtained after solid-liquid separation is mixed with the nanofiltration membrane leaching agent and returns to a leaching pool. The copper zinc and the cyanide are recycled, and therefore the problem that copper-bearing gold ore is high in leaching cost is solved; and meanwhile, the zero discharging of the cyanide liquid in the whole technology is achieved.</description><language>eng</language><subject>CHEMISTRY ; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; METALLURGY ; PRETREATMENT OF RAW MATERIALS ; PRODUCTION AND REFINING OF METALS ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2015</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=20150930&DB=EPODOC&CC=CN&NR=104946886A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20150930&DB=EPODOC&CC=CN&NR=104946886A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YUAN XINBO</creatorcontrib><creatorcontrib>XIE ZUNING</creatorcontrib><creatorcontrib>CHENG TAO</creatorcontrib><title>Method and system for recycling copper zinc and cyanide from copper-bearing gold ore cyanide gold refining</title><description>The invention provides a method and system for recycling copper zinc and cyanide from high-copper gold ore cyanide gold refining. Sodium cyanide is adopted to leach copper-bearing gold ore, ultrafiltration and nanofiltration membrane concentration are carried out on a leaching agent, concentrated acid and dissolvable sulfide are sequentially put into concentrated liquor, Cu2S (copper sludge) is produced, the copper sludge can be recycled after water removal, and copper-dissolved sodium cyanide is recycled synchronously; lime milk is added into a liquid supernatant to adjust the pH value, the liquid supernatant obtained after solid-liquid separation is mixed with the nanofiltration membrane leaching agent, and then has a replacement reaction with zinc powder to generate gold, ultrafiltration and nanofiltration membrane concentration are carried out on a barren solution, concentrated acid and soluble sulfide are put into concentrated liquor sequentially, ZnS (zinc sludge) is generated, and recycled after water removal, and zinc-dissolved cyanide is recycled synchronously; and the lime milk is added into the liquid supernatant to adjust the pH value, and the liquid supernatant obtained after solid-liquid separation is mixed with the nanofiltration membrane leaching agent and returns to a leaching pool. 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Sodium cyanide is adopted to leach copper-bearing gold ore, ultrafiltration and nanofiltration membrane concentration are carried out on a leaching agent, concentrated acid and dissolvable sulfide are sequentially put into concentrated liquor, Cu2S (copper sludge) is produced, the copper sludge can be recycled after water removal, and copper-dissolved sodium cyanide is recycled synchronously; lime milk is added into a liquid supernatant to adjust the pH value, the liquid supernatant obtained after solid-liquid separation is mixed with the nanofiltration membrane leaching agent, and then has a replacement reaction with zinc powder to generate gold, ultrafiltration and nanofiltration membrane concentration are carried out on a barren solution, concentrated acid and soluble sulfide are put into concentrated liquor sequentially, ZnS (zinc sludge) is generated, and recycled after water removal, and zinc-dissolved cyanide is recycled synchronously; and the lime milk is added into the liquid supernatant to adjust the pH value, and the liquid supernatant obtained after solid-liquid separation is mixed with the nanofiltration membrane leaching agent and returns to a leaching pool. The copper zinc and the cyanide are recycled, and therefore the problem that copper-bearing gold ore is high in leaching cost is solved; and meanwhile, the zero discharging of the cyanide liquid in the whole technology is achieved.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | Method and system for recycling copper zinc and cyanide from copper-bearing gold ore cyanide gold refining |
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