Method for extracting iron by carrying out suspension magnetizing roasting and cyanide breaking-magnetic separation on high-iron cyanidation tailings
The invention provides a method for extracting iron by carrying out suspension magnetizing roasting and cyanide breaking-magnetic separation on high-iron cyanidation tailings. The method comprises thefollowing steps of: (1) crushing and grinding the high-iron cyanidation tailings; (2) introducing th...
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| creator | YUAN SHUAI HAN YUEXIN SUN YONGSHENG GAO PENG LI YANJUN XIAO HANXIN |
| description | The invention provides a method for extracting iron by carrying out suspension magnetizing roasting and cyanide breaking-magnetic separation on high-iron cyanidation tailings. The method comprises thefollowing steps of: (1) crushing and grinding the high-iron cyanidation tailings; (2) introducing the high-iron cyanidation tailings into a pre-oxidation suspension roasting furnace, enabling high-temperature flue gas to enter the pre-oxidation suspension roasting furnace, heating the tailings powder to 650-750 DEG C in a suspension state for cyanide breaking roasting, and removing the residual solid material oxidized slag powder; (3) introducing the oxidized slag powder into a reduction roasting furnace, introducing coal gas and nitrogen into the bottom of the reduction roasting furnace, carrying out reduction roasting on the oxidized slag powder at 500-600 DEG C in a suspension state, and removing the residual reduced slag powder; (4) cooling the reduced slag powder, and then carrying out first-stage ore grindi |
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The method comprises thefollowing steps of: (1) crushing and grinding the high-iron cyanidation tailings; (2) introducing the high-iron cyanidation tailings into a pre-oxidation suspension roasting furnace, enabling high-temperature flue gas to enter the pre-oxidation suspension roasting furnace, heating the tailings powder to 650-750 DEG C in a suspension state for cyanide breaking roasting, and removing the residual solid material oxidized slag powder; (3) introducing the oxidized slag powder into a reduction roasting furnace, introducing coal gas and nitrogen into the bottom of the reduction roasting furnace, carrying out reduction roasting on the oxidized slag powder at 500-600 DEG C in a suspension state, and removing the residual reduced slag powder; (4) cooling the reduced slag powder, and then carrying out first-stage ore grindi</description><language>chi ; eng</language><subject>CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS ; MANUFACTURE OF IRON OR STEEL ; METALLURGY ; METALLURGY OF IRON ; PERFORMING OPERATIONS ; PRETREATMENT OF RAW MATERIALS ; PRODUCTION AND REFINING OF METALS ; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS ; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS ; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS ; TRANSPORTING ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2020</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=20200804&DB=EPODOC&CC=CN&NR=111485099A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200804&DB=EPODOC&CC=CN&NR=111485099A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YUAN SHUAI</creatorcontrib><creatorcontrib>HAN YUEXIN</creatorcontrib><creatorcontrib>SUN YONGSHENG</creatorcontrib><creatorcontrib>GAO PENG</creatorcontrib><creatorcontrib>LI YANJUN</creatorcontrib><creatorcontrib>XIAO HANXIN</creatorcontrib><title>Method for extracting iron by carrying out suspension magnetizing roasting and cyanide breaking-magnetic separation on high-iron cyanidation tailings</title><description>The invention provides a method for extracting iron by carrying out suspension magnetizing roasting and cyanide breaking-magnetic separation on high-iron cyanidation tailings. 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| subjects | CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON PERFORMING OPERATIONS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | Method for extracting iron by carrying out suspension magnetizing roasting and cyanide breaking-magnetic separation on high-iron cyanidation tailings |
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