Dab tsi ntawm Ore yog qhov tsim nyog rau Cyanide Heap Leaching?

Cyanide heap leaching yog ib txoj hauv kev siv dav hauv kev lag luam kub rho tawm rau kev ua qee hom ore. Kev nkag siab txog cov yam ntxwv ntawm ores haum rau cov txheej txheem no yog qhov tseem ceeb rau kev rov qab kub zoo.

1. Kev siv dav dav: Tsawg - Qib Ores

Cov txheej txheem leaching ntawm Cyanide heap feem ntau tsuas yog siv rau kev kho cov pob zeb kub qib qis, tshwj xeeb tshaj yog cov pob zeb Oxidized qib qis . Feem ntau ntawm cov pob zeb oxidized no yog cov pob zeb oxidized saum npoo av. Muab qhov loj me ntawm cov pob zeb loj hauv cov txheej txheem leaching heap, kev sib cuam tshuam ntawm cov pob zeb thiab cov neeg sawv cev leaching cyanide tsis muaj zog heev. Yog li ntawd, tus nqi leaching kub tsis siab npaum li qee txoj kev leaching, uas txwv nws daim ntawv thov tsuas yog rau cov pob zeb qib qis uas tseem tuaj yeem tswj tau tus nqi. Qib kub ntawm cov pob zeb uas tsim nyog rau cyanide heap leaching feem ntau yog nyob rau hauv qhov ntau ntawm 1.0 - 3.0 g / t, thiab tsuas yog qib kub ntawm cov khoom tso nyiaj ib leeg ntau dua 3.0 g / t.

2. Ore Structure thiab Compositional yam ntxwv

2.1 Kub Particle yam ntxwv

• Cov Khoom Kub Me Me Los Yog Puab Tiaj : Qhov loj ntawm cov khoom kub uas nyob hauv cov hlau uas tsim nyog yog cov khoom me me los yog tiaj. Cov duab no ua rau nws yooj yim rau kub kom raug cyanide ntxuav. Cov khoom kub me me los yog tiaj tus tuaj yeem sib cuag zoo dua nrog tus neeg sawv cev ntxuav cyanide, ua rau kub yaj thaum lub sijhawm ntxuav. Piv txwv li, hauv cov hlau oxidized uas tau nthuav tawm, kub feem ntau muaj nyob rau hauv cov khoom me me uas faib thoob plaws hauv cov hlau matrix, uas yog qhov zoo rau cyanide ntxuav.

2.2 Porosity thiab permeability

• Cov Pob Zeb Xoob, Qhov Ncua, thiab Qhov Ncua Tau : Cov pob zeb yuav tsum xoob, qhov ncua tau, thiab qhov ntcua tau vim yog kev oxidation thiab kev hloov pauv huab cua. Cov yam ntxwv ntawm lub cev no muaj txiaj ntsig zoo rau cov tshuaj cyanide kom nkag mus rau hauv cov pob zeb. Thaum cov tshuaj cyanide tuaj yeem ncav cuag cov zaub mov kub, qhov kev hloov pauv leaching tuaj yeem tshwm sim. Cov pob zeb zoo li cov uas tau hloov pauv huab cua ntev feem ntau tsim cov qauv qhov ntcua, uas ua rau cov tshuaj cyanide nkag mus thiab kov cov khoom kub sab hauv.

• Cov Pob Zeb Uas Muaj Kub Tau Los Ntawm Kev Sib Tsoo : Rau cov pob zeb uas muaj ob peb lub qhov thaum xub thawj, cov kub tuaj yeem raug nthuav tawm los ntawm txoj kev sib tsoo. Qhov no yog ib kauj ruam tseem ceeb ua ntej kev sib tsoo cyanide heap. Los ntawm kev sib tsoo, cov qauv kub sab hauv raug tawg, ua rau nws muaj peev xwm rau tus neeg sawv cev sib tsoo cyanide nkag mus rau kub. Qee cov pob zeb tawv uas muaj kub xauv sab hauv tuaj yeem ua tiav hauv txoj kev no kom ua rau lawv haum rau kev sib tsoo heap.

2.3 Tshuaj muaj pes tsawg leeg

• Cov Khoom Uas Muaj Acidic Tsawg Thiab Cov Khoom Uas Tsis Ua Haujlwm : Cov hlau yuav tsum tsis muaj lossis tsawg dua cov khoom uas muaj acidic thiab tsis muaj lossis tsawg dua cov khoom uas tuaj yeem ua rau cyanide. Cov khoom uas muaj acidic lossis cov khoom uas ua rau ua haujlwm tuaj yeem noj cov tshuaj cyanide leaching agent. Piv txwv li, yog tias muaj ntau cov zaub mov acidic hauv cov hlau, lawv yuav ua rau cyanide ua haujlwm, txo cov cyanide uas muaj rau kev leaching kub thiab yog li txo qhov ua tau zoo ntawm cov txheej txheem leaching cyanide heap.

• Tsis Muaj Kub - Cov Khoom Uas Nqus Los Yog Ua Rau Kub Ntsoov : Cov ore yuav tsum tsis txhob muaj cov khoom uas nqus los yog ua rau kub yaj. Yog tias muaj cov khoom zoo li no, lawv tuaj yeem cuam tshuam kev rho tawm kub thaum lub sijhawm leaching cyanide heap, txo qhov kev rov qab tau kub tag nrho. Piv txwv li, qee cov ores uas muaj Carbon nplua nuj yuav nqus cov kub yaj - cyanide complex, tiv thaiv nws txoj kev ua ntxiv rau kev rov qab tau kub.

3. Tej yam tshwj xeeb ore

3.1 Disseminated Oxidized Ore

Disseminated oxidized ores yog heev haum rau cyanide heap leaching. Nyob rau hauv cov ores, kub yog sib npaug zos nyob rau hauv ib tug nplua - grained lub xeev nyob rau hauv lub oxidized pob zeb matrix. Cov txheej txheem oxidation feem ntau ua rau cov ore ntau ntxeem tau, thiab cov nplua - grained kub yog yooj yim nkag mus rau cov tshuaj cyanide. Piv txwv li, nyob rau hauv ib co kub - bearing sandstone deposits uas tau undergone ntev-lub sij hawm huab cua thiab oxidation, cov kub yog disseminated nyob rau hauv lub sandstone matrix, thiab cyanide heap leaching tau zoo extract cov kub.

3.2 Sulfide Ore nrog Tsis-Kub Sib Txuas Zoo

Sulfide ores nyob rau hauv uas kub tsis coexist nrog sulfide minerals kuj yuav kho los ntawm cyanide heap leaching. Nyob rau hauv xws li ore, cov kub tsis nruj nreem khi rau sulfide Cheebtsam. Thaum cov ore yog heap - leached nrog cyanide, lub cyanide tuaj yeem xaiv yaj cov kub yam tsis muaj kev cuam tshuam ntau dhau los ntawm sulfide minerals. Txawm li cas los xij, yog tias cov kub sib txuas nrog sulfide minerals, sulfide yuav tsum tau kho ua ntej (xws li los ntawm kev ci los yog bio - oxidation) kom cov kub siv tau rau cyanide leaching.

3.3 Vein Gold Deposit or Placer Gold Deposit with me me Gold Particles

Vein kub deposits los yog placer kub deposits nrog me me kub hais los yog ib tug loj cheeb tsam ntawm kub hais yog haum rau cyanide heap leaching. Cov kub me me muaj thaj tsam loj dua hauv kev sib cuag nrog cov tshuaj cyanide, uas txhawb nqa cov tshuaj tiv thaiv leaching. Nyob rau hauv cov hlab ntsha kub deposits, yog hais tias cov kub tam sim no nyob rau hauv nplua - grained daim ntawv nyob rau hauv cov hlab ntsha qauv, thiab cov hlab ntsha - hosting pob zeb muaj haum porosity thiab permeability, cyanide heap leaching yuav yog ib txoj kev zoo extraction. Placer kub deposits, qhov twg kub tau weathered thiab eroded rau hauv me me hais, kuj yuav ua tiav siv txoj kev no.

Hauv kev xaus, cyanide heap leaching yog qhov zoo tshaj plaws rau cov qib qis ores nrog cov yam ntxwv tshwj xeeb thiab cov yam ntxwv, suav nrog cov kub zoo- grained, haum porosity, thiab tsis muaj cov khoom cuam tshuam. Los ntawm kev nkag siab txog cov kev cai ore no, kev ua haujlwm tsuas tuaj yeem ua kom zoo dua kev siv cov cyanide heap leaching kom tau txais txiaj ntsig thiab raug nqi - kev rho tawm kub zoo.