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 pob zeb kub hauv Akmola Region belongs rau sericite - hloov pob zeb hom thiab qis - sulfide kub - bearing quartz leeg hom. Qhov kub tshaj tawm cov nplej loj yog qhov zoo heev, tsis sib xws, thiab muaj kev sib raug zoo nrog sulfides. Cov ore muaj ib qho me me ntawm cov xim kub, pyrite, chalcopyrite, bismuth - tellurium sulfides, nrog rau galena, sphalerite, thiab lwm yam, thiab belongs rau. refractory floating kub ore. Nyob rau hauv thawj theem ntawm mining, cov txheej txheem ib txwm nyuaj rau kev ua tau zoo xws li complex ores, uas ua rau tsawg kub rov qab tus nqis, cov peev txheej loj, thiab kev txhim kho nyuaj ntawm 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 kub heap leaching txheej txheem yog txoj kev tsim nyog tshaj plaws rau kev kho cov ore no. Hauv cov txheej txheem no, sodium cyanide plays lub luag haujlwm tseem ceeb.

Lub siab-zoo sodium cyanide peb muab tau ua kom pom kev ua tau zoo hauv kev kub leaching txheej txheem ntawm no kub kuv. Cov txheej txheem kub leaching muaj kev tswj nruj thiab kev tshawb fawb txog qhov concentration ntawm sodium cyanide leaching tus neeg sawv cev: nyob rau hauv thawj theem, qhov concentration ntawm sodium cyanide leaching tus neeg saib xyuas yog tswj ntawm 0.10%, thiab thawj zaug txau siv yog 20 - 30L / (TPD); Tom qab nruab nrab theem, qhov concentration yog txo mus rau 0.05% - 0.08%, thiab nyob rau hauv lub kawg theem, nws yog kho rau 0.03% - 0.05%. Qhov sib piv ntawm cov tshuaj txau yog 1: 2. Thaum muaj teeb meem pom tseeb pom hauv pob khoom, qhov kev siv tshuaj tsuag thiab txau qhov sib piv yuav raug kho raws sijhawm. Cov kua qaub nplua nuj yog adsorbed thoob plaws hauv cov txheej txheem, thiab cov adsorption siv yog 12 - 20 L / (tpd). Thaum qib ntawm cov kua nplua nuj qis dua 0.2g / m3 lossis tsis muaj txiaj ntsig kev lag luam, qhov leaching 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 cov txheej txheem kev koom tes, peb pab pawg kws tshaj lij tau muab tag nrho - puag ncig thiab tag nrho - txheej txheem Kev txhawb nqa mus rau qhov kub. Los ntawm qhov pib ntawm qhov project, peb delved tob rau hauv lub mining cheeb tsam. Nyob rau hauv kev pom ntawm cov yam ntxwv ntawm cov ore complex ntawm lub kub mine, peb pab pawg neeg kub mine nyob rau hauv tsim ib tug ncauj lus kom ntxaws thiab meej heap leaching txheej txheem txoj kev npaj los xyuas kom meej tias sodium cyanide tuaj yeem ua nws qhov kev ua tau zoo tshaj plaws raws li qhov 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.