Heap Leaching Project ntawm Gold Mine hauv Akmola Region, Kazakhstan

Nyob rau hauv lub tshav pob ntawm kub mining, npaum extraction technologies thiab high-zoo tshuaj reagents yog ib qho tseem ceeb rau nce ntau lawm thiab txhim kho cov txiaj ntsig kev lag luam. Niaj hnub no, peb yuav tsom mus rau ib kub kuv nyob rau hauv Akmola Region, Kazakhstan, thiab tshawb nrhiav tob txog cov kev hloov pauv zoo kawg nkaus uas tau tshwm sim tom qab siv cov khoom zoo sodium cyanide muab los ntawm peb lub tuam txhab.

I. Cov Kev Sib Tw ntawm Txoj Haujlwm Kub Kub hauv Akmola Region

Lub qhov av kub hauv Akmola Cheeb Tsam yog hom pob zeb sericite uas hloov pauv thiab hom pob zeb quartz uas muaj cov kub sulfide tsawg. Cov noob kub uas nthuav tawm zoo heev, tsis sib npaug, thiab tsis muaj kev sib raug zoo nrog sulfides. Cov ore muaj me ntsis kub hauv zos, pyrite, chalcopyrite, bismuth - tellurium sulfides, nrog rau galena, sphalerite, thiab lwm yam, thiab yog hom ore kub uas tsis ruaj khov . Thaum pib ntawm kev khawb av, cov txheej txheem ib txwm nyuaj rau kev ua cov ores nyuaj no, ua rau muaj kev rov qab tau kub tsawg , pov tseg cov peev txheej loj heev, thiab nyuaj rau kev txhim kho cov txiaj ntsig kev lag luam.

II. Cov txheej txheem tshiab thiab lub luag haujlwm tseem ceeb ntawm Sodium Cyanide

Tom qab ntau qhov kev sim, nws tau txiav txim siab tias cov txheej txheem leaching kub heap yog txoj hauv kev tsim nyog tshaj plaws rau kev kho cov hlau no. Hauv cov txheej txheem no, sodium cyanide ua lub luag haujlwm tseem ceeb.

Cov tshuaj sodium cyanide zoo uas peb muab tau ua pov thawj tias ua tau zoo heev hauv cov txheej txheem ntxuav kub ntawm lub qhov av kub no. Cov txheej txheem ntxuav kub muaj kev tswj hwm nruj thiab kev tshawb fawb txog qhov concentration ntawm cov tshuaj sodium cyanide leaching agent: thaum pib, qhov concentration ntawm cov tshuaj sodium cyanide leaching agent raug tswj ntawm 0.10%, thiab qhov pib txau yog 20 - 30L/(TPD); tom qab theem nruab nrab, qhov concentration raug txo kom txog 0.05% - 0.08%, thiab thaum kawg, nws raug kho kom txog 0.03% - 0.05%. Qhov piv ntawm lub sijhawm txau yog 1:2. Thaum muaj teeb meem pom tseeb hauv lub pob, qhov hnyav txau thiab qhov piv ntawm lub sijhawm txau yuav raug kho raws sijhawm. Cov kua nplua nuj uas tau txau raug nqus thoob plaws hauv cov txheej txheem, thiab qhov hnyav nqus yog 12 - 20 L/(tpd). Thaum qib ntawm cov kua nplua nuj qis dua 0.2g/m3 lossis tsis muaj txiaj ntsig zoo rau kev lag luam, qhov kev ntxuav xaus.

Tom qab cov leaching tiav lawm, txhawm rau ua kom muaj kev ua raws li ib puag ncig, cov khoom calcium hypochlorite kis tau rau saum npoo ntawm lub pob thiab tom qab ntawd txau nrog dej. Thaum p(CN -) hauv cov kua reflux tsawg dua 0.5 × 10. cov tshuaj tua kab mob ua tau raws li cov qauv. Cov leaching residue tuaj yeem thauj mus rau qhov chaw pov tseg slag, thiab cov kua khib nyiab tawm ncaj qha.

III. Kev ua tau zoo kawg

Thoob plaws hauv txoj kev koom tes, peb pab neeg tshaj lij tau muab kev txhawb nqa kev txawj ntse rau lub qhov av kub. Txij thaum pib ntawm qhov project, peb tau tshawb nrhiav tob rau hauv thaj chaw khawb av. Vim yog cov yam ntxwv nyuaj ntawm lub qhov av kub, peb tau pab pab pawg neeg khawb av kub tsim cov txheej txheem kev ntxuav cov khib nyiab kom meej thiab raug kom ntseeg tau tias sodium cyanide tuaj yeem ua tau zoo tshaj plaws hauv qab cov xwm txheej tsim nyog tshaj plaws.

Thaum lub sij hawm kub leaching txheej txheem, cov kws kho mob tau tso rau ntawm - qhov chaw ntev los saib xyuas ntau yam txheej txheem tsis nyob hauv lub sijhawm. Raws li cov kev hloov pauv hauv cov ntsuas tseem ceeb xws li cov concentration ntawm sodium cyanide leaching tus neeg sawv cev, kev siv tshuaj tsuag, thiab txau cov sij hawm sib piv, cov lus qhia kev tshaj lij tau muab raws sijhawm thiab hloov kho. Piv txwv li, thaum pom muaj teeb meem seepage nyob rau hauv lub heap, kev sib tham tau sai sai, thiab cov txheej txheem txau yog rov ua kom zoo dua los xyuas kom meej qhov kev vam meej ntawm cov txheej txheem leaching.

Nyob rau tib lub sijhawm, peb kuj tau ua ntau qhov kev cob qhia kev cob qhia rau cov neeg ua haujlwm kub. Cov ntsiab lus kev cob qhia suav nrog kev nyab xeeb ntawm kev siv sodium cyanide, kev ua haujlwm thiab kev saib xyuas cov khoom siv heap leaching, thiab cov teeb meem tshwm sim thiab kev daws teeb meem hauv cov txheej txheem leaching. Los ntawm kev sib xyaw ua ke ntawm cov theoretical thiab cov tswv yim kev cob qhia, cov kev txawj ntse thiab kev ua haujlwm ntawm pab pawg kub kub tau txhim kho zoo.

Nws yog qhov tseeb raws li peb cov kev txhawb nqa thiab kev pabcuam txuas ntxiv uas cov nyiaj rov qab los ntawm qhov kub no tau nce mus txog 77%. Tsis tsuas yog kub ntau lawm tau nce ntau, tab sis kuj cov nqi tsim khoom tau txo qis heev. Cov kev ua tiav no tsis yog tsuas yog ua kom pom qhov ua tau zoo ntawm peb cov khoom siv high-zoo sodium cyanide tab sis kuj qhia txog lub zog muaj zog ntawm peb cov kws tshaj lij pab pawg.

Rau cov lag luam kub mining hauv Kazakhstan thiab lwm thaj chaw thoob ntiaj teb, xaiv cov khoom zoo sodium cyanide yog ib kauj ruam tseem ceeb los txhim kho kev sib tw thiab ua tiav kev txhim kho kom ruaj khov. Raws li tus kws tshaj lij sodium cyanide exporter, peb lub tuam txhab yuav txuas ntxiv txhawb nqa lub tswv yim zoo ua ntej thiab kev pabcuam - taw qhia, thiab muab cov khoom lag luam zoo thiab cov kev pabcuam rau kev lag luam kub mining thoob ntiaj teb. Yog tias koj lub mine kub tseem tab tom nrhiav kom muaj txiaj ntsig zoo thiab kev siv nyiaj txiag kev daws teeb meem, txais tos hu rau peb thiab sib koom ua ke qhib ib tshooj tshiab hauv kev lag luam kub.