
Kev tsim kho lub heap suav nrog kev muab cov ores lossis cov ores agglomerated tso rau hauv qab ntawm thaj chaw Heap leaching raws li qhov ntev geometric tsim. Lub heap ore tsim yuav tsum muaj qhov zoo thiab sib xws permeability, nrog rau kev ruaj khov ntawm cov qauv. Qhov no ua kom ntseeg tau tias thaum lub sijhawm leaching, tus neeg sawv cev leaching tuaj yeem nkag mus rau hauv tag nrho qhov seem ntawm lub heap ore ntawm qhov xav tau kua - faib zog. Lub caij no, nws tiv thaiv qhov tshwm sim xws li kev tawg ntawm ntug ntawm lub heap ore lossis kev ntxuav hauv zos. Yog li ntawd, yuav tsum tau them sai sai thaum lub sijhawm ua haujlwm. Hauv kev xyaum tsim khoom, muaj lwm hom heap leaching txoj kev. Cov ore rho tawm raug thauj ncaj qha mus rau lub platform heap leaching rau leaching yam tsis tau tsoo ua ntej. Hauv qee kis, leaching txawm tias tshwm sim ntawm qhov chaw blasting. Qhov loj me ntawm cov ore feem ntau yog txij li 100 txog 200 hli lossis loj dua, ua rau muaj lub voj voog leaching uas tuaj yeem kav ntev li ib nrab xyoo lossis ntev dua. Txij li thaum hom heap leaching no yooj yim heev, nws feem ntau tsis tau kawm ua hom heap leaching.
Kev xaiv ntawm Heap Leaching Sites thiab tso cov kab hauv qab
Kev xaiv qhov chaw tso roj Heap yog cuam tshuam nrog kev nqis peev hauv kev tsim kho vaj tse, suav nrog kev ua qhov chaw, kev thauj mus los, thiab kev teeb tsa cov kav dej. Lub hauv qab ntawm qhov chaw tso roj heap thiab nws txoj kev tso yog qhov tseem ceeb rau kev tsim cov roj heap, tshwj xeeb tshaj yog rau cov roj heaps loj. Yog li ntawd, qhov zoo ntawm lub hauv qab yuav tsum tau ua kom ntseeg tau.

1. Tej yam yuav tsum tau muaj rau Heap Leaching Sites
Lub tsev kawm ntawv yuav tsum muaj lub zog txaus los tiv thaiv tag nrho cov siab ntawm cov ore hnyav thiab cov khoom siv thauj mus los.
Nws yuav tsum muaj qee qhov kev nqes hav, uas yog qhov zoo rau qhov chaw trimming thiab ntws ntawm leachate.
Yuav tsum muaj thaj chaw txaus rau kev tsim kho heap thiab kev thauj mus los. Rau cov mines uas muaj peev xwm txhim kho, yav tom ntej kev nthuav dav yuav tsum tau xav txog.
2. Kev xaiv thiab tso cov kab hauv qab rau Heap Leaching Platforms
2.1 Xaiv cov kab hauv qab rau Heap Leaching Platforms
Cov kab hauv qab rau heap leaching platforms tuaj yeem faib ua ob hom: mus tas li thiab ib ntus. Cov qub yuav tsum tau siv sij hawm ntev thiab cov nqi siab, ua rau nws haum rau nruab nrab - rau - loj - nplai mines nrog lub neej ua haujlwm ntev. Nyob rau hauv sib piv, ib ntus hauv qab liners tsuas yog siv ib zaug xwb, yuav tsum tau siv sij hawm luv luv, thiab yog tsawg - nqi. Lawv tsim nyog rau cov mines nrog lub neej ua haujlwm tsawg dua 5 xyoos. Tsis tas li ntawd, ib puag ncig ib puag ncig kuj ua lub luag haujlwm. Yog tias thaj chaw tsim kho qhov chaw heap leaching tsuas yog txwv, ib qho chaw ruaj khov heap leaching platform tuaj yeem tsim. Hloov pauv, yog tias muaj qhov loj - cheeb tsam txoj kab nqes nyob ze thiab cov ore - kev thauj mus los luv luv, ib ntus heap leaching platform tuaj yeem tsim.
2.2 Muaj ntau yam khoom siv hauv qab liner
Av nplaum thiab Bentonite : Thaum muaj av nplaum ntau nyob ze ntawm qhov chaw uas cov av nplaum tawm, kev siv cov ntaub hauv qab av nplaum yog qhov kev xaiv zoo. Cov ntaub hauv qab no tuaj yeem raug nias ua peb txheej, txhua txheej tuab li 150 hli. Tus coefficient permeability ntawm cov ntaub hauv qab no yog 1.0 × 10−7 cm / s, uas ua tau raws li qhov yuav tsum tau ua ntawm kev tiv thaiv ib puag ncig. Vim tias bentonite (tshwj xeeb tshaj yog sodium - hom) muaj cov khoom nqus dej muaj zog thiab tuaj yeem nthuav dav 10 - 30 zaug hauv qhov ntim tom qab nqus dej, ntxiv cov nyiaj tsim nyog (kwv yees li 4%) ntawm bentonite rau cov av nplaum tuaj yeem txo qhov permeability ntawm cov av nplaum. Hom ntaub hauv qab no yooj yim rau kev tso thiab muaj tus nqi qis. Lub hauv paus yuav tsum tau nias, thiab qhov nqes hav yuav tsum maj mam kom tiv thaiv kev yaig ntawm cov ntaub hauv qab thaum lub sijhawm ua cov ntaub hauv qab.
Asphalt thiab Concrete : Thaum siv asphalt lossis concrete ua lub hauv qab, nws lub zog tiv thaiv kev seepage thiab compressive yog cuam tshuam nrog nws qhov tuab. Feem ntau, qhov tuab yog txij li 150 txog 200 mm. Thaum tsim tau zoo, qhov permeability coefficient yog ntawm 1.0 × 10−9 cm/s thiab 1.0 × 10−10 cm/s. Txawm li cas los xij, hom hauv qab no kim heev thiab yooj yim tawg.
Cov Yeeb Yaj Kiab Polyethylene Uas Muaj Qhov Ceev (Cov Phaj) (HDPE) : Thaum siv cov polyethylene uas muaj qhov ceev thiab lwm yam khoom siv hluavtaws ua cov txheej hauv qab, qhov tuab tsuas yog 1 - 2 hli xwb. Nws cov coefficient permeability tsawg dua 1.0 × 10−13 cm/s, thiab nws muaj peev xwm tiv taus qhov nruab nrab. Nws haum rau cov pob zeb uas muaj qhov loj me tsawg dua 20 hli thiab tuaj yeem siv dua ntau zaus. Cov phaj mos polyethylene uas muaj qhov ceev thiab siab tuaj yeem sib txuas ntawm qhov chaw siv cyclohexanone. Txoj kev tsim kho yooj yim, tab sis cov kev cai nruj heev tau muab tso rau qhov zoo ntawm cov vuam. Hauv cov tebchaws txawv teb chaws, cov khoom siv no feem ntau raug xaiv rau cov txheej hauv qab ntawm cov chaw leaching heap (suav nrog cov pas dej ua kua tiav).
2.3 Cov qauv hauv qab liner
Cov Ntaub Npog Hauv Qab Ib Txheej : Thaum siv cov av nplaum, asphalt, lossis concrete rau cov ntaub npog hauv qab ib txheej, lawv dais kev ntxhov siab siab thiab tuaj yeem tswj kev ruaj khov ntawm lub pob zeb ore ua ke nrog lub hauv paus. Thaum siv cov khoom siv hluavtaws, tshwj xeeb tshaj yog thaum cov khoom siv hluavtaws raug tso rau ntawm lub hauv paus ntawm cov khoom siv zoo, lub zog sib txhuam qis heev, uas tuaj yeem ua kom ntseeg tau tias lub pob zeb ore ruaj khov.
Cov Ntaub Npog Hauv Qab Ob Txheej : Cov ntaub npog hauv qab ob txheej yog ua los ntawm ob hom ntaub npog hauv qab. Ob txheej no tuaj yeem sib txuas ncaj qha lossis muaj txheej ntws dej lossis txheej thaiv nyob nruab nrab. Cov txheej ntws dej siv rau kev saib xyuas qhov xau tuaj yeem sau thiab rov ua dua cov dej khib nyiab. Cov txheej ntws dej tuaj yeem ua los ntawm cov ntaub ntawv xws li xuab zeb zoo, thiab nws qhov ntxiv kuj tseem tuaj yeem txhim kho qhov ruaj khov ntawm cov pob zeb ore. Cov txheej sab saud ntawm cov ntaub npog hauv qab ob txheej feem ntau yog cov txheej cushion ua haujlwm kom ntseeg tau tias cov dej khib nyiab rov qab los, thaum cov txheej qis dua yog cov txheej thaub qab los tiv thaiv kev xau ntawm cov tshuaj mus rau hauv ib puag ncig. Feem ntau, cov txheej ua haujlwm ntawm cov ntaub npog hauv qab ob txheej yog ua los ntawm cov ntaub ntawv hluavtaws xws li HDPE thiab PVC, thiab cov txheej thaub qab yog ua los ntawm av nplaum.
Cov Ntawv Hauv Qab Peb Txheej : Cov ntawv hauv qab peb txheej feem ntau yog ua los ntawm ib txheej PVC lossis HDPE phaj mos thiab ob txheej av nplaum, lossis ob txheej PVC thiab ib txheej av nplaum. Muaj feem ntau uas cov pob zeb yuav swb nrog cov ntawv hauv qab peb txheej. Txhawm rau kom tsis txhob swb, tsawg kawg ib txheej dej yuav tsum tau muab rau ntawm cov txheej ntawv hauv qab. Cov ntawv hauv qab peb txheej tsis tshua siv.
2.4 Tso cov kab hauv qab
Cov txheej txheem txheej txheem thiab qhov zoo ntawm cov kab hauv qab no cuam tshuam rau nws txoj haujlwm. Thaum tso cov av nplaum hauv qab, nws yog ib qho tsim nyog yuav tsum tsis txhob muaj lub caij los nag los yog lub caij qhuav kom tsis txhob muaj cov kab hauv qab los ntawm kev tawg vim dej poob. Txoj hauv kev tshwj xeeb yog ua ntej nteg ib txheej ntawm av nplaum, bentonite, los yog nplua tailings rau ntawm lub hauv paus, compact nws, ces nteg yas zaj duab xis los yog roj hmab los xij, ntxiv ib txheej ntawm av nplaum los yog nplua xuab zeb, thiab thaum kawg npog ib txheej ntawm loj - loj ore raws li ib tug tiv thaiv txheej.
Thaum muaj qhov sib txawv ntawm qhov siab hauv lub hauv paus, tso cov khoom hluavtaws - cov khoom siv hauv qab yuav tsum pib los ntawm qhov qis tshaj plaws thiab nce mus. Tsis txhob tsim wrinkles. Lub tshuab seamless cov menyuam tuaj yeem siv rau kev tso, thiab vuam yog qhov zoo dua ua rau ntawm qhov chaw. Cov welds yuav tsum zoo ib yam, thiab lawv txoj kev npaj yuav tsum yog perpendicular mus rau txoj kev txav mus los ntawm cov ore heap. Tsis tas li ntawd, qhov chaw tso ntawm cov kab hauv qab ntawm qhov chaw heap leaching yuav tsum yog me ntsis loj dua qhov tseeb hauv qab ntawm cov pob zeb pob zeb.
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