Zofunikira Zisanu Zatekinoloje za Cyanidation Gold Extraction ku Gold Ores

Kuchotsa golide pogwiritsa ntchito cyanide ndi njira yomwe imagwiritsa ntchito cyanide ngati njira yochotsera golide. Chifukwa cha ukadaulo wake wokhwima, kuchuluka kwa leaching, komanso kusinthasintha kwamphamvu ndi miyala, njira yochotsera golide ikadali imodzi mwa njira zazikulu zopangira golide mpaka lero. Panthawi ya njira yochotsera golide pogwiritsa ntchito cyanidation, ndikofunikira kuwongolera mbali iliyonse yaukadaulo kuti muwonetsetse kuti chuma chabwera bwino. Nkhaniyi ikudziwitsani zofunikira zisanu ndi zitatu zaukadaulo zochotsera golide pogwiritsa ntchito cyanidation kuchokera ku miyala yagolide.

1. Aeration ndi Cyanide Addition

Cyanide amawonjezeredwa ku slurry pambuyo pogaya kuti asungunuke golide, kupanga zitsulo. Njira yochitira ili motere: [Njira yochitira zinthu iyenera kuikidwa apa ngati ilipo]. Monga momwe tikuonera mu equation, mpweya umafunika pakuchita golide. Chifukwa chake, popanga mafakitale, mpweya umalowetsedwa mu thanki ya leaching. Kuthamanga kwa mpweya nthawi zambiri kumakhala mozungulira 1 kg, ndipo mphamvu ya mpweya imaposa 0.002 m³ pamphindi pa kiyubiki mita ya slurry.

2. Kuphatikiza kwa Alkali Woteteza

Kusunga cyanide mu slurry, kuteteza kuipitsa chilengedwe, ndi kupewa m'badwo ndi kutayika kwa poizoni wa hydrogen cyanide (HCN) mpweya, alkali ayenera kuwonjezeredwa mu thanki leaching. Izi zimasunga slurry pamtengo wapamwamba wa pH (10.5 - 11). Popanga mafakitale, mkaka wa laimu kapena laimu umagwiritsidwa ntchito kwambiri, ndipo nthawi zina NaOH imawonjezedwa kuti ikonzedwenso.

3. Kusunga Slurry mu Dziko Loyimitsidwa

Njira yochotsera golide wa cyanidation ili ndi zofunikira zenizeni pakugwirira ntchito kwa thanki yosokoneza ya leaching (adsorption). Pansi pakugwiritsa ntchito mphamvu zochepa, tinthu tating'ono ta golide tomasulidwa kapena zowonekera mu slurry siziyenera kuyika mu thanki. slurry, cyanide, laimu, ndi mpweya ziyenera kusakanizidwa bwino ndikuyimitsidwa mu thanki. The slurry ndende ayenera kukhala yunifolomu mbali zonse za thanki, popanda stratification pamodzi kuya kwa thanki, ndi tinthu kukula kugawa ayenera kukhala wofanana.

4. Kusunga Kukhazikika Koyenera kwa Slurry

Pamene kachulukidwe wa ore golide kukhala cyanided ranges kuchokera 2.65 kuti 2.8. kuchuluka kwa leaching slurry ndende ndi 40 - 45%. Pamene kachulukidwe wa flotation kuganizira ndi 3 - 3.5. ndende ya leaching wamba ndi 30 - 40%. Ubwino wazinthuzo nthawi zambiri zimakhala kuti 80 - 95% yake imadutsa musefa wa 200 - mesh. Zochita zopanga zikuwonetsa kuti zida zosiyanasiyana komanso momwe zinthu zimapangidwira zimafunikira matanki osiyanasiyana osokoneza.

5. Kuchepetsa Kuvala ndi Phokoso la Zigawo Zosuntha

Kuchepetsa kuvala kwa agitator ndikukulitsa moyo wake wautumiki, zotulutsa zambiri pakupanga mafakitale ndi mphira - wokhala ndi mzere. Chipangizo chotumizira chiyenera kukonzedwa bwino kuti chiwonetsetse kuti kufalikira kwachangu komanso phokoso lochepa.

6. Kuchepetsa Kuvala Kaboni

Mu ndondomeko ya kaboni - mkati mwa pulp, kaboni imawonjezedwa ku thanki yolowetsa madzi kuti itenge golide wochotsedwa. Ngati mphamvu yosonkhezera ya thanki yolowetsa madzi ndi yamphamvu kwambiri, kaboni idzaphwanyidwa ndi kutayika; ngati ili yofooka kwambiri, dothi lidzagwa. Chifukwa chake, pamene matope akusungidwa mu mkhalidwe woyimitsidwa, mbali imodzi, kaboni wouma kwambiri uyenera kusankhidwa kuti upangidwe, ndipo mbali inayo, liwiro lozungulira la impeller liyenera kuchepetsedwa kuti kuchepetse kutayika kwa kaboni ndi mphamvu yolowera ya thanki yolowetsa madzi.

7. Kudziwa Sikelo Yoyenera

Pakalipano, mphamvu zogwirira ntchito za zomera zodziwika bwino za cyanidation zimachokera ku khumi ndi awiri mpaka makumi masauzande a matani patsiku. Kukula kwakukulu, malo ochulukirapo, zida zokulirapo, komanso ndalama zambiri zimafunikira. Migodi iyenera kudziwa kukula koyenera kwa mbewu kutengera momwe zinthu ziliri.

8. Kuchepetsa Kulemera kwa Zida ndi Ndalama

Posankha thanki yothamangitsira leaching, iyenera kukhala yogwira mtima kwambiri komanso yopulumutsa mphamvu pa leaching. Panthawi imodzimodziyo, chipangizo chotumizira chiyenera kukhala ndi malo ochepa, ndipo zipangizo ziyenera kukhala zopepuka. Mukazindikira kukula, kuchuluka kwa slurry, ndi nthawi yotsitsa, kuchuluka kwa akasinja kungadziwike. Komabe, kukula kwa thanki yosokoneza kuyenera kukhala yoyenera sikelo. Mwachitsanzo, ngati 500 - t / d cyanidation chomera chikugwiritsabe ntchito φ3.5 × 3.5 m thanki yosokoneza, zipangizo zambiri zidzafunika, kuonjezera ndalama. Chifukwa chake, pokhapokha ngati zidazo ndizopepuka komanso kuchuluka kwake kuli koyenera, ndalama zomanga bizinesiyo zitha kuchepetsedwa.

Izi ndi zofunika zisanu ndi zitatu zaukadaulo pazomera zagolide za cyanidation. Eni ake a migodi ayenera kuwongolera mosamalitsa njira iliyonse yopanga migodi ndikuyang'anira magawo osiyanasiyana munthawi yeniyeni kuti apewe kuwonongeka kwachuma komwe kumachitika chifukwa cha ntchito zosayenera. Eni ake a migodi athanso kufunsa opanga omwe ali ndi ziyeneretso zonse zosankha mbewu. Ndikofunikira kwambiri kuyezetsa zitsulo zachitsulo pasadakhale ndikupanga mapulani oyenera kusankha mbewu motengera zotsatira za mayeso.