Zinthu Zambiri Zomwe Muyenera Kudziwa Zokhudza Gold Cyanidation

Gold cyanidation ndi njira yochotsera golide pogwiritsa ntchito cyanide ngati wothandizira leaching. Chifukwa cha luso lake lokhwima, kuchuluka kwa kutulutsa golide, komanso kugwiritsidwa ntchito mwamphamvu kwa ore, njira ya cyanidation ikadali imodzi mwa njira zazikulu zochotsera golide pakadali pano. Mu Gold cyanidation ndondomeko, sitepe iliyonse iyenera kuyendetsedwa kuti iwonetsetse ubwino wachuma pamene kuchepetsa kulemera kwa zida ndi ndalama.

1. Aeration ndi Cyanide Addition

Pambuyo pogaya, cyanide amawonjezeredwa ku zamkati kuti asungunuke golide ndikupanga zitsulo. Njira yochitira ili motere: 4Au + 8NaCN + O2 + 2H2O → 4NaAu(CN)2 + 4NaOH. Monga momwe tikuwonera kuchokera pamwambapa, mpweya umafunikira pakutulutsa golide. Chifukwa chake, popanga mafakitale, tanki yotsitsa imayenera kuyatsidwa. Kuthamanga kwa mpweya nthawi zambiri kumakhala pafupifupi 1 kg, ndipo voliyumu ya mpweya pa miniti pa kiyubiki mita iliyonse ya slurry ndi yoposa 0.002 m³.

2. Kuonjezera Protective Alkali

Kuonetsetsa kuchuluka kwa cyanide mu zamkati, kupewa kuwononga chilengedwe, komanso kupewa kutulutsa mpweya wa poizoni wa hydrogen cyanide (HCN), alkali iyenera kuwonjezeredwa ku thanki yotulutsa kuti ikhale ndi pH yamtengo wapatali. Mkaka wa mandimu kapena laimu nthawi zambiri umagwiritsidwa ntchito popanga mafakitale, ndipo nthawi zina NaOH imawonjezedwa kuti ikonzedwenso.

3. Kusunga Kuyimitsidwa kwa Slurry

Njira ya golide ya cyanidation ili ndi zofunikira zina kuti agwire ntchito ya tanki yosokoneza. Pogwiritsa ntchito mphamvu zochepa, tinthu tating'ono ta golide wolekanitsidwa ndi monomer kapena wowonekera pamwamba pazamkati sayenera kuyika mu thanki. Zamkati, cyanide, laimu, ndi mpweya ziyenera kusakanikirana bwino mu thanki kuti zifike poyimitsidwa. Kuchuluka kwa slurry mu gawo lililonse la thanki kuyenera kukhala kofanana, ndipo pasakhale stratification motsatira kuya kwa thanki, ndipo kukula kwa tinthu kuyenera kukhala kofanana.

4. Kusunga Kukhazikika Koyenera kwa Slurry

Pamene kachulukidwe wa golide ore ndi 2.65 - 2.8. ndende ya leaching zamkati ndi 40 - 45%. Pamene kachulukidwe wa flotation kuganizira ndi 3 - 3.5. ndende ya leaching wamba ndi 30 - 40%. Nthawi zambiri, zida zokhala ndi fineness zosakwana 200 mesh zimawerengera 80 - 95%.

5. Kuchepetsa Kuvala ndi Phokoso la Zigawo Zosuntha

Kuchepetsa kuvala kwa agitator ndikuwonjezera moyo wake wautumiki, zotulutsa zambiri pakupanga mafakitale zimakhala ndi mphira. Kusankhidwa kwa chipangizo chopatsirana kuyenera kukhala kosamalitsa kuti kuwonetsetse kuti kachilombo ka HIV kakuyenda bwino komanso phokoso lochepa.

6. Kuchepetsa Kuvala Kaboni

Njira ya carbon-in-pulp imawonjezera kaboni ku thanki ya adsorption kuti adsorbe golide. Ngati mphamvu ya chipwirikiti ya thanki yotayikirayo ndi yamphamvu kwambiri, mpweyawo umakhala pansi ndi kutayika. Ngati mphamvu ya mupiringidzo ili yofooka, matope amapangidwa. Choncho, pokhalabe zamkati mu boma inaimitsidwa, pa dzanja limodzi, m`pofunika kusankha mkulu-kuuma mpweya kupanga, ndipo Komano, m`pofunika kuchepetsa kasinthasintha liwiro la impeller kuchepetsa imfa ya zamkati, mpweya, ndi athandizira mphamvu ya mukubwadamuka thanki adsorption.

7. Kupeza Mphamvu Zoyenera

Pakali pano, mphamvu yokonza zomera wamba golide cyanidation ranges kuchokera makumi angapo matani kufika makumi masauzande matani patsiku. Kuchulukira kwa mphamvu zopangira, kumapangitsanso kukula kwa malo opangira, komanso kukulira kwa zida ndi ndalama. Mwini mgodi aliyense ayenera kudziwa kuchuluka kwa malo ogwirira ntchito molingana ndi momwe zilili.

8. Kuchepetsa Kulemera kwa Zida ndi Ndalama

Posankha thanki ya leaching, kumbali imodzi, ndondomeko yowonongeka imafunika kuti ikhale yogwira ntchito komanso yopulumutsa mphamvu, ndipo panthawi imodzimodziyo, chipangizo chotumizira chimayenera kukhala ndi phazi laling'ono ndi kulemera kwake. Pamene mphamvu, ndende ya zamkati, ndi leaching nthawi yatsimikiziridwa, chiwerengero cha akasinja leaching akhoza kudziŵika. Komabe, machulukidwe a matanki a leaching ayenera kukhala oyenera kukula kwa mbewu. Pomanga 500t / d golide cyanidation chomera, ngati φ3.5X3.5m leaching thanki ikugwiritsidwa ntchito, zipangizo zofunikira ziyenera kuwonjezeredwa, kuonjezera ndalama. Chifukwa chake, ndi zida zopepuka zokha komanso mphamvu yoyenera yomwe ndalama zomanga bizinesiyo zitha kuchepetsedwa.