Cov txheej txheem thiab txheej txheem rau tshem tawm Cyanide los ntawm Surface Sulfide Ores

Cov txheej txheem thiab txheej txheem tshem tawm Cyanide los ntawm Surface Sulfide Ores Sodium cyanide cyanidation leaching tailings cyanides sulfide ores No.

Cyanidation leaching yog txheej txheem siv dav hauv kev lag luam kub mining. Txawm li cas los xij, cyanidation leaching tailings feem ntau ua rau muaj teeb meem loj. Cov tailings no feem ntau muaj qis - concentration cyanides, unextracted kub thiab nyiaj, raws li zoo raws li carrier minerals xws li chalcopyrite thiab pyrite. Qhov chaw ntawm sulfide ore nyob rau hauv cov tailings yog inhibited los ntawm Sodium cyanide thaum lub sij hawm cyanidation txheej txheem. Txawm hais tias ore qib qis thiab cov cyanide concentration tsis tshua muaj siab, qhov loj ntim ntawm tailings ua rau lawv muaj kev txhawj xeeb loj.

Tam sim no, muaj peb txoj kev kho mob rau cyanidation leaching tailings: acid activation, oxidant activation, thiab tooj liab - ntsev kho.

Acid Activation Method

Txoj kev ua kom cov kua qaub yog ntxiv sulfuric acid los yog oxalic acid los ua kom cov tailings. Thaum txoj kev no tuaj yeem ua kom cov tailings zoo, nws muaj ob peb qhov tsis zoo. Ua ntej, nws yog nquag tsim cov tshuaj lom thiab teeb meem hydrogen cyanide gas. Txawm hais tias cov roj hydrogen cyanide rov qab tuaj yeem rov qab siv dua, kev ua haujlwm ua rau muaj kev pheej hmoo siab. Qhov thib ob, qhov chaw acidic tuaj yeem yooj yim corrode cov cuab yeej thiab cov kav dej, yuav tsum tau ntsuas qib siab tiv thaiv corrosion.

Oxidant Activation Method

Hauv txoj kev ua kom oxidant, hydrogen peroxide lossis hypochlorite yog ntxiv los ua kom cov tailings. Txawm li cas los xij, nws yog qhov nyuaj rau kev tswj hwm qhov ntau npaum li cas ntawm cov oxidant. Cov nyiaj ntau me ntsis tuaj yeem oxidize sulfide ores, txo lawv txoj kev rov qab los. Ntxiv mus, ntau oxidants yog corrosive rau tib neeg lub cev, ua rau muaj kev hem thawj rau kev noj qab haus huv ntawm cov neeg ua haujlwm.

Tooj - Txoj kev kho ntsev

Cov tooj liab - ntsev txoj kev kho mob siv cov ntsev inorganic xws li tooj liab sulfate lossis hlau ntsev kom qhib cov tailings. Txawm li cas los xij, cov kev cai ib puag ncig muaj cov cai nruj rau kev tso tawm ntawm tooj liab ions hauv dej khib nyiab. Tsis tas li ntawd, tooj liab ions yog activators rau sphalerite thiab pyrite. Yog li, txoj kev no tsis haum rau cyanidation tailings uas muaj ob qho tib si sphalerite thiab pyrite, thiab nws tsis yog ib puag ncig tus phooj ywg.

Hauv kev xaus, kev kho mob ntawm cyanidation leaching tailings nthuav tawm cov txheej txheem nyuaj. Txawm hais tias cov ntsiab lus tsis tshua muaj cyanide, cov nqi peev nyiaj siab thiab nruj kev nyab xeeb thiab ib puag ncig yuav tsum tau tshawb nrhiav cov tshiab, zoo dua, thiab kev kho kom ruaj khov. Qhov no tuaj yeem muaj feem cuam tshuam nrog kev sib xyaw ua ke ntawm cov txheej txheem uas twb muaj lawm lossis kev txhim kho tag nrho cov txheej txheem tshiab los daws qhov kev txhawj xeeb ntawm ib puag ncig thiab nyiaj txiag cuam tshuam nrog cov tailings.

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