Cyanide Sodium Heap Leaching Project ya Oxidized Gold Ore ku Senegal

Mgodi wa golidi ku Senegal ndi wotsika kwambiri oxidized golide miyala ndi giredi yagolide ya 2.49 g/t. Kafukufuku wa Laboratory adagwiritsidwa ntchito mulu leaching ndondomeko. Zotsatira za magawo azinthu monga kukula kwa tinthu tating'onoting'ono, mitundu ndi milingo ya ma leaching agents, nthawi ya leaching, ndi mitundu ndi mlingo wa okosijeni wothandiza pakuchotsa golide adafufuzidwa. Mikhalidwe yabwino idatsimikiziridwa, kukwaniritsa chiwongola dzanja cha golide cha 89.57% ndi giredi yagolide m'malo otsalira a 0.26%. Zotsatirazi zimapereka maziko odalirika aukadaulo pakukula bwino komanso kagwiritsidwe ntchito ka miyalayi.

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

The yaiwisi miyala wosweka kwa tinthu kukula anazitsanulira mwa cylindrical mbiya wodzazidwa ndi bedrock. Chiŵerengero cha madzi-olimba chinakhazikitsidwa pa 1.5: 1. Laimu anawonjezeredwa kusintha pH mtengo kukhala wamkulu kuposa 11. ndi kuchuluka kwa Sodium cyanide chinawonjezedwa. Leaching inkachitika firiji kwa nthawi inayake. Pambuyo pa mayesowo, zamkati zimatsanuliridwa kuti zisiyanitse zolimba-zamadzimadzi. Golide yemwe ali m'malo otsalira komanso kuchuluka kwa golide muzitsulo zomwe zili ndi golide zidawunikidwa, ndipo kuchuluka kwa golide wokhetsedwa kunawerengedwa.

3. Zotsatira Zoyesa ndi Kusanthula

Kutengera mawonekedwe a zinthu za ore yaiwisi, kufananitsa kudapangidwa pakati pa njira ziwiri zoyesera: matope athunthu. cyanidation leaching ndi kuchepa kwa magazi. Mayesero a matope onse a cyanidation anali motere: kugaya fineness -0.074 mm 95%, chiŵerengero cholimba cha 3: 1. makina oyambitsa, ndi leaching nthawi 24 h. Mayesero a milu leaching anali motere: ore tinthu kukula -10 mm, madzi-olimba chiŵerengero cha 1.5: 1. ndi nthawi ya 72h.

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) Kupyolera mu mulu leaching chikhalidwe mayesero, mulingo mulingo leaching ndondomeko magawo anatsimikiza motere: ore tinthu kukula -20 mm, Sodium Cyanide Mlingo wa 2.0 kg/t, calcium peroxide mlingo wa 4.0 kg/t, ndi leaching nthawi ya masiku 10. Ma index olekanitsa omwe akwaniritsidwa anali 89.57% ya golide yotsika mtengo komanso giredi yagolide m'malo otsalira a 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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