Yim Yam Kev Xav Tau rau Cyanidation Kub Extraction los ntawm Kub Ores

Kev rho kub cyanidation yog ib txoj kev siv cyanide ua cov tshuaj leaching los rho kub. Vim nws cov thev naus laus zis laus, qhov ceev leaching siab, thiab muaj zog hloov pauv mus rau cov ores, cov txheej txheem cyanidation tseem yog ib qho ntawm cov txheej txheem tseem ceeb rau kev tsim kub txog niaj hnub no. Thaum lub sijhawm txheej txheem cyanidation, nws yog ib qho tseem ceeb kom tswj txhua yam thev naus laus zis kom ntseeg tau tias muaj txiaj ntsig zoo rau kev lag luam. Tsab xov xwm no yuav qhia koj txog yim qhov yuav tsum tau ua rau kev rho kub cyanidation los ntawm cov ores kub.

1. Aeration thiab Cyanide Ntxiv

Cyanide ntxiv rau slurry tom qab sib tsoo kom yaj kub, tsim cov hlau complexes. Cov tshuaj tiv thaiv mis yog raws li nram no: [Cov tshuaj tiv thaiv yuav tsum muab tso rau ntawm no yog tias muaj]. Raws li tau pom los ntawm qhov sib npaug, cov pa oxygen yuav tsum tau thaum lub sij hawm kub leaching cov tshuaj tiv thaiv. Yog li ntawd, nyob rau hauv industrial ntau lawm, huab cua yog nkag mus rau hauv lub leaching tank. Lub aeration siab yog feem ntau nyob ib ncig ntawm 1 kg, thiab aeration tus nqi yog ntau tshaj 0.002 m³ ib feeb ib cubic meter ntawm slurry.

2. Ntxiv kev tiv thaiv Alkali

Txhawm rau tswj hwm qhov concentration ntawm cyanide hauv slurry, tiv thaiv ib puag ncig muaj kuab paug, thiab zam kev tsim thiab poob ntawm cov pa phem hydrogen cyanide (HCN) roj, alkali yuav tsum tau ntxiv rau lub tank leaching. Qhov no khaws cov slurry ntawm tus nqi pH siab (10.5 - 11). Hauv kev tsim khoom, txiv qaub lossis txiv qaub kua txiv feem ntau siv, thiab qee zaum NaOH ntxiv rau kev hloov kho ntxiv.

3. Kev tuav lub Slurry nyob rau hauv lub xeev ncua

Cov txheej txheem cyanidation kub extraction muaj cov cai tshwj xeeb rau kev ua haujlwm ntawm leaching (adsorption) agitation tank. Nyob rau hauv cov xwm txheej ntawm kev siv hluav taws xob tsawg, cov khoom ntawm cov kub uas tau tso tawm los yog muaj qhov chaw nyob hauv slurry yuav tsum tsis txhob tso rau hauv lub tank. Cov slurry, cyanide, txiv qaub, thiab huab cua yuav tsum sib tov kom huv si thiab muab tshem tawm hauv lub tank. Lub slurry concentration yuav tsum tsis sib xws ntawm txhua qhov chaw ntawm lub tank, tsis muaj stratification raws qhov tob ntawm lub tank, thiab qhov loj me me yuav tsum sib npaug.

4. Tswj kom tsim nyog Slurry Concentration

Thaum qhov ceev ntawm cov ore kub yog cyanide li ntawm 2.65 txog 2.8. Qhov dav dav leaching slurry concentration yog 40 - 45%. Thaum qhov ceev ntawm flotation concentrate yog 3 - 3.5. Qhov dav dav leaching concentration yog 30 - 40%. Qhov zoo ntawm cov khoom yog feem ntau xws li tias 80 - 95% ntawm nws dhau los ntawm 200 - mesh sieve. Cov kev coj ua ntau lawm qhia tau hais tias cov khoom sib txawv thiab kev tsim khoom yuav tsum tau sib txawv agitation tanks.

5. Txo qhov hnav thiab suab nrov ntawm cov khoom txav

Txhawm rau txo qhov hnav ntawm cov agitator thiab txuas ntxiv nws lub neej kev pab cuam, feem ntau cov impellers hauv kev lag luam yog cov roj hmab - lined. Cov cuab yeej kis tau tus mob yuav tsum tau ua tiav ua tiav kom ntseeg tau tias kev sib kis tau zoo thiab tsis muaj suab nrov.

6. Txo cov pa roj carbon hnav

Hauv cov txheej txheem Carbon - hauv - pulp, cov pa roj carbon ntxiv rau hauv lub tank adsorption kom nqus cov kub uas tau leached. Yog tias lub zog agitation ntawm lub tank leaching agitation muaj zog dhau, cov pa roj carbon yuav raug zom thiab poob; yog tias nws tsis muaj zog dhau, cov sedimentation yuav tshwm sim. Yog li ntawd, thaum tswj cov slurry hauv lub xeev suspended, ntawm ib sab tes, cov pa roj carbon siab - hardness yuav tsum tau xaiv rau kev tsim khoom, thiab ntawm qhov tod tes, qhov ceev ntawm lub impeller yuav tsum tau txo kom txo cov pa roj carbon poob thiab lub zog nkag ntawm lub tank agitation - adsorption.

7. Kev txiav txim siab qhov ntsuas qhov tsim nyog

Tam sim no, lub peev xwm ua tau zoo ntawm cov nroj tsuag cyanidation ntau ntawm ntau lub kaum rau kaum tawm txhiab tons hauv ib hnub. Qhov loj dua, qhov av ntau dua, cov khoom siv loj dua, thiab kev nqis peev ntau dua yog xav tau. Mines yuav tsum txiav txim siab qhov tsim nyog teev ntawm cov nroj tsuag raws li cov xwm txheej tiag tiag.

8. Txo cov khoom hnyav thiab kev nqis peev

Thaum xaiv lub leaching agitation tank, nws yuav tsum ua kom muaj txiaj ntsig zoo thiab lub zog - txuag rau leaching. Nyob rau tib lub sijhawm, cov khoom siv sib kis yuav tsum nyob qhov chaw tsawg dua, thiab cov khoom siv yuav tsum sib sib zog nqus. Thaum ntsuas qhov ntsuas, slurry concentration, thiab leaching lub sij hawm raug txiav txim, tus naj npawb ntawm cov tso tsheb hlau luam tuaj yeem paub tseeb. Txawm li cas los xij, qhov loj ntawm lub agitation tank yuav tsum haum rau qhov ntsuas. Piv txwv li, yog tias 500 - t / d cyanidation cog tseem siv lub φ3.5 × 3.5 m agitation tank, yuav tsum muaj ntau yam khoom siv, nce peev. Yog li ntawd, tsuas yog thaum cov cuab yeej yog lub teeb yuag thiab qhov ntsuas tsim nyog tuaj yeem txo qis kev tsim kho kev lag luam.

Cov no yog yim lub tswv yim yuav tsum tau rau cyanidation kub nroj tsuag. Cov tswv ntawm cov mines yuav tsum nruj me ntsis tswj txhua txoj kev tsim khoom hauv kev tsim khoom tiag tiag thiab saib xyuas ntau yam tsis raws sijhawm los tiv thaiv kev lag luam poob los ntawm kev ua haujlwm tsis raug. Cov tswv hauv kuv kuj tseem tuaj yeem sab laj cov tuam txhab tsim khoom nrog tag nrho cov kev tsim nyog xaiv cov nroj tsuag. Nws yog ib qho tseem ceeb uas yuav tau ua cov ore - kev hnav khaub ncaws ua ntej thiab tsim cov phiaj xwm xaiv cov nroj tsuag uas tsim nyog raws li cov txiaj ntsig kev xeem.