
Mgodi wa golide ku Senegal ndi miyala yamtengo wapatali yagolide yokhala ndi golide wa 2.49 g/t. Kafukufuku wa m'ma laboratories adachitika pogwiritsa ntchito njira yochotsera miyala yamtengo wapatali . Zotsatira za magawo a ndondomeko monga kukula kwa tinthu ta mkuwa, mitundu ndi kuchuluka kwa zinthu zochotsera miyala, nthawi yochotsera miyala, ndi mitundu ndi kuchuluka kwa zinthu zophera golide zinafufuzidwa. Mikhalidwe yabwino kwambiri idapezeka, zomwe zidapangitsa kuti golide atuluke ndi 89.57% komanso golide wa 0.26%. Zotsatirazi zimapereka maziko odalirika aukadaulo pakupanga ndi kugwiritsa ntchito mwanzeru miyala iyi.
1. Katundu wa Ore
Golide wa ore yaiwisi ndi 2.49 g/t, chomwe ndi chinthu chachikulu chomwe chingabwezedwe. Silver giredi ndi 4.26 g/t, yokhala ndi zinthu zochepa. Chigawo chachikulu cha zonyansa mu ore ndi SiO₂, kutsatiridwa ndi zochepa za Al ndi Fe. Chigawo chachikulu chovulaza ndi arsenic, chokhala ndi arsenic kalasi ya 0.68%. Magiredi a zinthu zina ndi otsika. Mchere waukulu wazitsulo mu ore ndi limonite, ndipo mchere wa sulfide ndi wosowa kwambiri, makamaka pyrite. Mchere wa gangue makamaka ndi quartz, feldspar, ndi mchere wadongo.
Mgodi wa golide uwu ndi miyala yamtengo wapatali yokhala ndi okosijeni yokhala ndi mawonekedwe otayirira, makamaka ngati tinthu tosweka ndi dothi. Kuzindikiritsa kwa Petrographic kumasonyeza kuti pyrite yambiri mu ore ilipo mu mawonekedwe a njere za euhedral, zophatikizidwa mu quartz, feldspar, ndi chlorite. Kukula kwa tinthu kuli bwino, nthawi zambiri kumayambira 0.02 mpaka 0.4 mm. Limonite amawoneka ngati pseudomorph wa pyrite kapena colloidal limonite wopangidwa ndi condensation wa ferric hydroxide solution wosakanikirana ndi mchere wochepa wa silicate dongo, kudzaza ming'alu ya mchere wa gangue. Quartz imapezeka makamaka ngati metacolloidal chalcedony quartz, yokhala ndi tinthu tambirimbiri toyambira 0.02 mpaka 0.15 mm. Feldspar ili mu mawonekedwe a njere zosakhazikika kapena zophatikizika, ndi kukula kwa tinthu 0.02 mpaka 0.3 mm. Michere ya golide yomwe ili mu miyala iyi imakhala ndi kukula kwa tinthu tating'ono, tokhala ndi golide wonyezimira wa -0.001 mm.
2. Njira Zoyesera
Mchere wosaphika wophwanyidwa kufika pa tinthu tinatake unathiridwa mu mbiya yozungulira yodzazidwa ndi miyala. Chiŵerengero cha madzi-cholimba chinakhazikika pa 1.5:1. Laimu anawonjezedwa kuti asinthe pH kukhala yoposa 11. Ndipo kuchuluka kwa Sodium cyanide kunawonjezedwa. Kutulutsa madzi kunachitidwa kutentha kwa chipinda kwa nthawi inayake. Pambuyo pa mayeso, zamkati zinathiridwa kuti zilekanitse golide ndi madzi. Kuchuluka kwa golide mu zotsalira za leaching ndi kuchuluka kwa golide mu yankho lokhala ndi golide kunasanthulidwa, ndipo kuchuluka kwa leaching ya golide kunawerengedwa.
3. Zotsatira Zoyesa ndi Kusanthula
Kutengera ndi makhalidwe a miyala yaiwisi, kuyerekeza kunachitika pakati pa njira ziwiri zoyesera: kuyatsa kwa matope onse ndi kuyatsa kwa heap. Mikhalidwe yoyesera ya kuyatsa kwa matope onse inali motere: kusalala kwa -0.074 mm 95%, chiŵerengero cha madzi-cholimba cha 3:1. kusakaniza kwa makina, ndi nthawi yochotsa madzi ya maola 24. Mikhalidwe yoyesera ya kuyatsa kwa heap inali motere: kukula kwa tinthu ta mkuwa wa -10 mm, chiŵerengero cha madzi-cholimba cha 1.5:1. ndi nthawi yochotsa madzi ya maola 72.
Pogwiritsa ntchito milu ya leaching, kutsika kwa golide kunali 70.89%. Pogwiritsa ntchito matope onse a cyanidation, kuchuluka kwa golide kudakwera pang'ono mpaka 74.05%. Poganizira za mtengo wamtengo wapatali, njira yodulira milu idakhazikitsidwa pakuyesa kupeza golide.
4. Zotsatira
(1) Ore wa golide ndi miyala ya okosijeni yopangidwa ndi nyengo, yokhala ndi golide wa 2.49 g/t, makamaka golide wonyezimira wa -0.001 mm. Ore ndi oyenera kuchiza pogwiritsa ntchito cyanidation leaching process.
(2) Kudzera mu mayeso a momwe heap leaching imayezera, magawo abwino kwambiri a heap leaching process adadziwika motere: kukula kwa tinthu tating'onoting'ono ta -20 mm, mlingo wa Sodium Cyanide wa 2.0 kg/t, mlingo wa calcium peroxide wa 4.0 kg/t, ndi nthawi yochotsa chitsulo cha masiku 10. Ma index olekanitsa omwe adapezeka anali kuchuluka kwa golide leaching wa 89.57% ndi golide mu zotsalira za leaching wa 0.26%.
Pomaliza, kasitomala adazindikira zotsatira za mayeso athu. Pambuyo polankhulana ndi kasitomala, zitsanzo zinatumizidwa, ndipo mayesero angapo opindula anachitidwa. Kupyolera mu kusanthula kufananiza, njira yoyenda yoyenera momwe zinthu zilili pomaliza idasinthidwa makonda a polojekitiyi.
Panopa, ntchitoyi ikupita patsogolo mwamphamvu. M'miyezi ingapo, chomera chochotsa mulu chidzamalizidwa.
Ntchito yotulutsa mulu wa miyala ya golide wa oxid ku Senegal yathandiza kwambiri pakulimbikitsa chitukuko cha migodi ya golide ku Senegal. Ntchito yonse ya polojekitiyi, kuyambira pakufufuza kwa mayeso a beneficiation, kapangidwe ka bwalo, kufika kwa zida, kukhazikitsa ndi kuyitanitsa, kuphunzitsa antchito, mpaka kugwira ntchito kwa mulu wa leaching plant, ndi udindo wa United Chemical Makampani ndipo wafika pamiyezo yopanga.
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