Cyanidation ndi imodzi mwa njira zazikulu zopindulira migodi ya golide, ndipo imatha kugawidwa m'mitundu iwiri: kuyambitsa cyanidation ndi percolation cyanidation.Pochita izi, kusakaniza kwa cyanide golide m'zigawo makamaka kumaphatikizapo cyanide-zinki m'malo (CCD ndi CCF) ndi osasefedwa cyanide carbon slurry (CIP ndi CIL).Chida cholekanitsa golide chomwe chimagwiritsidwa ntchito kwambiri ndi chipangizo chosinthira ufa wa zinc, thanki yotsitsimutsa, kugwiritsa ntchito pang'onopang'ono kachitidwe ka electrolysis.
1. Chida chosinthira ufa wa Zinc ndi njira yomwe imagwiritsa ntchito ufa wa zinki kutulutsa golide kumadzi amtengo wapatali m'malo mwa cyanide-zinc.Zomwe zapangidwa pano zimayang'ana kwambiri zida zopezera golide zomwe zili ndi siliva wochuluka mu golide.Pambuyo poyeretsa madzi amtengo wapatali ndi kuchotsa mpweya, chipangizo cholowa m'malo mwa zinki chimawonjezeredwa kuti apeze matope a golide.Pamene nthaka ufa (silika) ntchito m'malo mpweya ndi kuchira golide, otchedwa cyanide-zinki m'malo njira (CCD ndi CCF) angagwiritsidwe ntchito mchitidwe kupanga, kapena nthaka ufa m'malo angagwiritsidwe ntchito pochiza zodula zothetsera (leaching njira. ).Nthawi zambiri, kuwonjezera pa migodi ya golide yokhala ndi siliva wapamwamba kwambiri, zida zosinthira ufa wa zinki zitha kugwiritsidwanso ntchito pokonza golide womwe ukufunika kuwongolera kalasi yawo.
2. Tanki yosonkhezera impeller iwiri ndi chipangizo chomwe chimagwiritsidwa ntchito kwambiri pochotsa golide wa carbon slurry (njira ya CIP ndi CIL).Pansi pa kukoka ndi kuchitapo kanthu koyambitsanso kawiri, slurry imayenda pansi kuchokera pakati, imafalikira kudzera muzitsulo zozungulira zozungulira, imalowetsa mpweya kumapeto kwa shaft, imasakanikirana ndi slurry ndikuzungulira mmwamba.Njirayi ndi yoyenera kwa ogwiritsa ntchito omwe ali ndi mphamvu yokoka yaying'ono, kukhuthala kochepa komanso kutsika kwamvula., pamene tinthu tating'onoting'ono tating'ono tating'ono tating'ono tating'ono ta -200 mesh ndipo ndende ya golide yachitsulo imakhala yosakwana 45%, kusakaniza koyimitsidwa kofanana kungapangidwe.Mayamwidwe ndi ntchito zina zosakaniza.Mu ndondomeko ya CIP yosungira golide, leaching ndi adsorption ndi ntchito zodziimira.Mu ntchito mayamwidwe, ndondomeko leaching kwenikweni anamaliza.Kukula, kuchuluka, ndi momwe amagwirira ntchito akasinja adsorption amatsimikiziridwa ndi magawo adsorption.Njira ya CIL yosungiramo golide imakhudzanso kutulutsa ndi kutsatsa nthawi imodzi.Popeza ntchito yotulutsa leaching nthawi zambiri imatenga nthawi yayitali kuposa momwe ma adsorption amagwirira ntchito, kukula kwa thanki yotulutsa leaching kumatsimikiziridwa ndi magawo a leaching kuti adziwe kuchuluka kwa aeration ndi dosing.Chifukwa kuchuluka kwa mayamwidwe kumakhudzana ndi magwiridwe antchito a golide wosungunuka, milingo 1-2 yakumizidwa isanakwane nthawi zambiri imachitidwa musanamizidwe m'mphepete kuti muwonjezere kuchuluka kwa golide wosungunuka mu thanki ya adsorption ndikuwonjezera nthawi yotulutsa.
3. Kugwiritsa ntchito pang'ono mofulumira desorption electrolysis system.Dongosolo laling'ono logwiritsa ntchito mwachangu la desorption electrolysis ndi zida zopangira zida zagolide zomwe zimadetsa ndi ma electrolyte kaboni wodzaza golide kuti apange matope a golide pansi pa kutentha kwambiri komanso kupanikizika kwambiri.Mpweya wa kaboni wodzaza ndi golide umatumizidwa ku sekirini yolekanitsa kaboni (nthawi zambiri imakhala yozungulira yozungulira) kudzera pa mpope wa kaboni kapena chonyamulira mpweya.Chophimbacho chimatsukidwa ndi madzi oyera kuti alekanitse carbon ndi slurry.Mpweya wodzaza golide umalowa mu thanki yosungiramo kaboni, slurry ndi madzi otsekemera.Lowetsani gawo loyamba la thanki ya adsorption.Kugwiritsa ntchito magetsi otsika mphamvu komanso othamanga kwambiri powonjezera ma anions amatha kusintha Au(CN) 2- ndi Au(CN)2-, ndipo madzi amtengo wapatali omwe amapezedwa ndi kaboni wodzaza ndi golide amatha kubweza golide wolimba kudzera mu njira ya ionization.Dongosolo lotsika kwambiri lamagetsi ochepetsa mphamvu yamagetsi limakhala ndi chiwopsezo chopitilira 98% pansi pa kutentha kwambiri (150 ° C) komanso kupanikizika kwambiri (0.5MPa), ndipo kugwiritsa ntchito mphamvu ndi 1/4 ~ 1/2 yokha yanthawi zonse. dongosolo.Kuphatikizika kosakhala ndi poizoni komanso zotsatira zake kumakhala ndi mpweya wotulutsa mpweya, womwe ungathe kukonzanso mpweya.Mpweya wowonda safunikira kubwezeretsedwanso ndi njira yamoto, yomwe imasunga mtengo wa kukonzanso mpweya.Golide slurry ndi wapamwamba kwambiri, safuna reverse electrolysis, ndipo ndi yosavuta kuchotsa.Panthawi imodzimodziyo, njira yochepetsera yowonongeka mofulumira imatenganso njira zitatu zotetezera, zomwe ndi nzeru za dongosolo lokha, njira yochepetsera kuthamanga ndi kuchepetsa, ndi valve chitetezo cha inshuwalansi.
Nthawi yotumiza: Feb-18-2024
