METHOD OF PROCESSING GOLD-CONTAINING CRUDE
FIELD: gold mining. SUBSTANCE: method is appropriate to process various types of gold- containing crude, including quartz, persistent clayey and sulfide ores. Gold-containing crude is fluoridated with ammonium difluoride and/or fluoride at crude to agent weight ratio 1:(1.2-3.5) and temperature 170-...
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| creator | EHPOV D.G MOISEENKO V.G RIMKEVICH V.S KRYSENKO G.F MEL'NICHENKO E.I SERGIENKO V.I |
| description | FIELD: gold mining. SUBSTANCE: method is appropriate to process various types of gold- containing crude, including quartz, persistent clayey and sulfide ores. Gold-containing crude is fluoridated with ammonium difluoride and/or fluoride at crude to agent weight ratio 1:(1.2-3.5) and temperature 170-190 C. Products are heated while simultaneously removing volatile ammonium-containing fluorides, nonvolatile residue is subjected to refluoridation and water leaching to give gold- containing concentrate. EFFECT: simplified technology and enabled closed processing cycle. 6 cl, 1 dwg, 3 exo |
| format | Patent |
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SUBSTANCE: method is appropriate to process various types of gold- containing crude, including quartz, persistent clayey and sulfide ores. Gold-containing crude is fluoridated with ammonium difluoride and/or fluoride at crude to agent weight ratio 1:(1.2-3.5) and temperature 170-190 C. Products are heated while simultaneously removing volatile ammonium-containing fluorides, nonvolatile residue is subjected to refluoridation and water leaching to give gold- containing concentrate. 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SUBSTANCE: method is appropriate to process various types of gold- containing crude, including quartz, persistent clayey and sulfide ores. Gold-containing crude is fluoridated with ammonium difluoride and/or fluoride at crude to agent weight ratio 1:(1.2-3.5) and temperature 170-190 C. Products are heated while simultaneously removing volatile ammonium-containing fluorides, nonvolatile residue is subjected to refluoridation and water leaching to give gold- containing concentrate. EFFECT: simplified technology and enabled closed processing cycle. 6 cl, 1 dwg, 3 exo</abstract><edition>6</edition><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 OF PROCESSING GOLD-CONTAINING CRUDE |
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