Tshaj tawm cov thev naus laus zis ntawm Direct Electrolytic Extraction ntawm Kub los ntawm Cyanide - Leaching Pregnant Solution

Ntawm ntau haiv neeg Kub rho tawm cov txheej txheem, cov Direct electrolytic rho tawm kub los ntawm cyanide - leaching cev xeeb tub cov tshuaj yog tawm los ua ib txoj hauv kev tseem ceeb hauv kev lag luam mining. Tam sim no, cia peb delve tob rau hauv no cim thiab tseem ceeb technology.

I. Lub hauv paus ntsiab lus: "Kev hloov pauv" ntawm kub uas tau tsav los ntawm hluav taws xob tam sim no

Cyanide - leaching cev xeeb tub cov tshuaj, ib qho tseem ceeb nruab nrab nyob rau hauv lub kub extraction txheej txheem, feem ntau muaj kub nyob rau hauv daim ntawv ntawm cov kub - cyanide complex anion Au(CN)_2^-. Thaum ib tug ncaj qha - tam sim no fais fab mov txuas nrog, zoo kawg li kev hloov pauv pib nyob rau hauv lub electrolytic cell. Nyob rau hauv lub zog ntawm hluav taws xob teb, kub - cyanide complex anions, zoo li hais nrog ib tug meej kev taw qhia, txav mus rau lub cathode ib tug los ntawm ib tug. Thaum ncav lub cathode nto, lawv nkag tau cov electrons thiab raug txo qis cov tshuaj tiv thaiv. Cov txheej txheem no tuaj yeem piav qhia meej los ntawm cov Cov tshuaj tiv thaiv electrode mis: Au(CN)_2^-+e^- = Au + 2CN^-. Kub ions tau ua tiav "hloov" mus rau hauv cov ntsiab lus kub, uas maj mam tso rau ntawm cathode, zoo li yog sau zaj dab neeg ntawm kub lub noob caj noob ces. Lub caij no, ntawm lub anode, cyanide ions poob electrons thiab raug oxidation cov tshuaj tiv thaiv, xws li 2CN^--2e^-=(CN)_2â†. Txawm li cas los xij, cov tshuaj tiv thaiv sab no yuav tsum tau ua tib zoo tswj thoob plaws hauv cov txheej txheem electrolysis kom tsis txhob muaj kev cuam tshuam tsis zoo rau kev tshem tawm cov txiaj ntsig thiab purity ntawm kub.

II. Txheej Txheem Txheej Txheem: Kev sib koom ua ke ntawm qhov zoo thiab cov kev sib tw

(I) Cov txiaj ntsig tseem ceeb

1.Streamlined txheej txheem rau High Efficiency

Cov txheej txheem kub rho tawm, xws li zinc - plua plav hloov txoj kev thiab lub tshuab ua haujlwm - carbon adsorption txoj kev, feem ntau koom nrog cov khoom sib txawv - kua sib cais, zinc - plua plav hloov, lossis qhib - cov txheej txheem carbon adsorption thiab desorption. Hauv qhov sib piv, qhov ncaj qha electrolytic rho tawm ntawm cov thev naus laus zis kub ua kom txoj haujlwm no yooj yim heev. Tsis tas yuav siv sij hawm ntau dhau thiab siv zog rau cov kauj ruam nruab nrab no, uas tsis tsuas yog txuag lub sijhawm muaj txiaj ntsig tab sis kuj txo cov cuab yeej siv, ua kom cov txheej txheem rho tawm kub ntau dua thiab ua tau zoo.

2.Assurance ntawm tus nqi rov qab siab

Ua tsaug rau nws cov txheej txheem electrolysis tshwj xeeb, cov thev naus laus zis no tuaj yeem rho tawm kub los ntawm cyanide - leaching cev xeeb tub cov tshuaj kom tag nrho. Raws li cov txheej txheem tswj tau zoo, cov kub Tus nqi rov qab feem ntau tuaj yeem ncav cuag qib txaus siab. Piv txwv li, tom qab Jiangxi Jinshan Kub Mine tau txais cov txheej txheem tshiab electrowinning rau kev rho tawm kub, tag nrho cov nyiaj rov qab tau nce ntxiv, nqa cov txiaj ntsig kev lag luam ntau ntxiv rau kev lag luam.

3.Production ntawm High - Purity khoom

Thaum lub sij hawm electrolysis, feem ntau lwm yam impurity hlau ions raug tshem tawm zoo los ntawm depositing ntawm lub cathode. Qhov no tshwm sim nyob rau hauv kuj siab - purity kub, zoo heev alleviating lub nra ntawm refining txheej txheem tom ntej, uas yuav pom tau tias yog ib tug ob - rau - ib tug zoo dua.

4.Kev ua raws li ib puag ncig txheeb ze - tswv yim phooj ywg

Piv nrog rau tej zaum ib puag ncig teeb meem, xws li hnyav - hlau muaj kuab paug, cuam tshuam nrog zinc - plua plav hloov txoj kev, txoj kev ncaj qha electrolysis, thaum tswj nruj heev, yog ib puag ncig tus phooj ywg, muab txoj hauv kev zoo rau kev txhim kho kev lag luam mining.

(II) Cov kev sib tw ntsib

1.Sstringent Requirements for Pregnant Solution Quality

Cyanide - leaching cev xeeb tub cov tshuaj yog "raws li cov khoom siv" rau cov electrolytic kub extraction "khiav," thiab nws qhov zoo yog qhov tseem ceeb tshaj plaws. Kev hloov pauv me ntsis hauv qhov tsis xws li cov ntsiab lus impurity, kub concentration, thiab pH tus nqi hauv cev xeeb tub cov tshuaj tuaj yeem cuam tshuam rau cov nyhuv electrolysis. Yog li ntawd, ua ntej electrolysis, lub cev xeeb tub cov tshuaj yuav tsum tau nruj me ntsis pretreated kom tshem tawm "kev cuam tshuam cov tshuaj" xws li tooj liab, zinc, hlau, thiab lwm yam hlau ions, raws li zoo raws li tshem tawm cov khib nyiab, los xyuas kom meej qhov zoo ntawm cov txheej txheem electrolysis.

2.Cov nqi siab vim kev siv hluav taws xob siab

Cov txheej txheem electrolysis yog lub zog - hnyav, yuav tsum muaj hluav taws xob ntau. Qhov no undoubtedly nce nqi ntau lawm. Hauv cov ntsiab lus tam sim no ntawm kev nce nqi hluav taws xob, nrhiav txoj hauv kev los txo qis kev siv hluav taws xob tau dhau los ua teeb meem ceev uas yuav tsum tau daws.

3.High - Cov cuab yeej cuab tam nqis peev

Yuav kom ua tiav cov khoom siv hluav taws xob ncaj qha ntawm cov kub kub, cov khoom siv hluav taws xob tshwj xeeb, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab lwm yam, yuav tsum tau nruab. Tus nqi pib nqis peev rau cov khoom siv no kuj yog siab heev, ua rau muaj kev cuam tshuam tseem ceeb rau qee lub lag luam nrog cov nyiaj txiag nruj heev.

4. Muaj peev xwm muaj kev nyab xeeb

Nws yuav tsum tau hais tias cyanide - leaching cev xeeb tub cov tshuaj yog tshuaj lom. Thaum cov txheej txheem electrolysis, txawm tias qhov kev ua haujlwm me me tuaj yeem ua rau muaj kev nyab xeeb loj xws li cyanide to, ua rau muaj kev puas tsuaj loj rau cov neeg ua haujlwm thiab ib puag ncig.

III. Qhov cuam tshuam rau qhov tseem ceeb: Cov ntsiab lus tseem ceeb hauv ntau qhov ntev

(I) Kev xaiv cov khoom siv hluav taws xob

Kev ua tau zoo ntawm cov ntaub ntawv cathode yog qhov tseem ceeb rau cov txiaj ntsig kub deposition thiab kev ua haujlwm tam sim no, zoo li tus neeg ncaws pob xaiv cov khau khiav. Cov khoom siv cathode xws li stainless hlau thiab titanium muaj lawv qhov zoo thiab qhov tsis zoo thiab yuav tsum tau ua tib zoo xaiv raws li qhov xwm txheej tiag tiag. Cov khoom siv anode yuav tsum muaj cov khoom siv hluav taws xob zoo thiab zoo heev corrosion kuj. Titanium - plated platinum electrodes thiab cov kev xaiv zoo sib xws yog tsim rau kev ua haujlwm ruaj khov hauv ib puag ncig electrolysis complex.

(II) Kev tswj ntawm Electrolysis Parameters

Electrolysis tsis xws li tam sim no ceev, electrolysis lub sij hawm, kub, thiab stirring ceev yog zoo li "tswj knobs" ntawm cov txheej txheem electrolysis. Qhov tsim nyog tam sim no ceev tuaj yeem ua kom ceev cov nyiaj tso nyiaj kub, tab sis yog tias nws siab dhau lawm, kev cuam tshuam sab yuav tshwm sim, txo qhov kev ua haujlwm tam sim no. Lub sij hawm electrolysis yuav tsum tau txiav txim kom raug raws li cov ntsiab lus kub hauv cov tshuaj tiv thaiv cev xeeb tub thiab cov txheej txheem electrolysis kom ua tiav cov txiaj ntsig kub. Feem ntau, qhov nce hauv qhov kub thiab txias ua rau kev sib cais thiab tso nyiaj ntawm kub, tab sis yog tias nws siab dhau lawm, nws yuav ua rau muaj kev nce siab hauv kev siv zog thiab nce volatilization poob ntawm cyanide. Tsim nyog nplawm tuaj yeem sib npaug faib cov ions hauv cov tshuaj thiab txhim kho cov electrolysis efficiency.

(III) Kev cuam tshuam ntawm Kev Kho Mob Cev Xeeb Tub

Sib nrug los ntawm cov thawj kub - cyanide complex ion, lwm ions nyob rau hauv lub cev xeeb tub cov tshuaj kuj plays lub luag hauj lwm tseem ceeb nyob rau hauv lub kub extraction txheej txheem. Yog hais tias lub concentration ntawm CN ^- tsawg heev, kub - cyanide complex ion yuav dissociate, cuam tshuam kub deposition. Yog hais tias lub concentration ntawm OH^- yog siab dhau lawm, nws yuav qeeb tus kub dissolution tus nqi. Impurity ions feem ntau yuav tso nyiaj tshwj xeeb ntawm cathode los yog hnov ​​​​mob nrog cov kub - cyanide complex ion, cuam tshuam nrog kev nce qib ntawm kev rho tawm kub.

IV. Piv txwv daim ntawv thov: Ua qauv qhia kev ua tiav hauv kev xyaum

Kev vam meej ntawm Jiangxi Jinshan Kub Mine

Tau ntau xyoo, Jiangxi Jinshan Kub Mine tau ruaj khov siv cov txheej txheem electrowinning tshiab rau kev rho tawm kub. Qhov kev ntsuas no tsis tau tsuas yog ua kom yooj yim rau cov txheej txheem ntws, tab sis kuj tau ua tiav cov txiaj ntsig kub rov qab mus rau qhov siab tshiab. Nyob rau tib lub sijhawm, tus nqi tsim khoom kub tau raug txo los ntawm 30% - 38%, nqa cov txiaj ntsig kev lag luam ntau rau kuv thiab ua piv txwv rau kev nrov nrov thiab kev siv tshuab no.

Kev Ua Haujlwm Ua Haujlwm ntawm Zhuji Kub Mine

Thaum lub Plaub Hlis Ntuj xyoo 1988. Zhuji Kub Mine tau ua siab tawv thov cov khoom siv hluav taws xob ncaj qha los rho cov pob zeb los ntawm cyanide - leached carbon slurry. Los ntawm kev sim cov tswv yim, cov txiaj ntsig zoo tau ua tiav, thiab cov txiaj ntsig kev lag luam tau txais txiaj ntsig zoo, muab cov kev paub zoo rau nws cov neeg sib tw.

Cov thev naus laus zis ntawm kev rho tawm ncaj qha electrolytic ntawm kub los ntawm cyanide - leaching cev xeeb tub kev daws teeb meem, txawm tias ntsib ntau cov kev cov nyom, yog txhaj tshuaj tshiab tseem ceeb rau hauv txoj kev loj hlob ntawm kev lag luam kub mining nrog nws qhov tshwj xeeb zoo thiab cov ntawv thov dav dav. Nrog kev txhim kho thev naus laus zis thiab kev txhim kho txuas ntxiv, nws ntseeg tau tias cov cuab yeej no yuav ci ntsa iab ntau dua nyob rau yav tom ntej ntawm kev rho tawm kub.