Sodium Cyanide hauv Leaching txheej txheem ntawm Arsenic-Bearing Ores

Hauv kev ua cov hlau muaj nqis, kev rho tawm cov hlau muaj nqis los ntawm cov hlau feem ntau muaj teeb meem loj, tshwj xeeb tshaj yog thaum cuam tshuam nrog cov hlau nyuaj xws li cov uas muaj arsenic. Cov hlau uas muaj arsenic muaj teeb meem vim lawv cov mineralogy nyuaj thiab muaj kev pheej hmoo rau ib puag ncig thiab kev noj qab haus huv uas cuam tshuam nrog arsenic. Cyanidation, ib txoj kev uas siv sodium cyanide , tau ntev los ua ib txoj kev ib txwm muaj thiab siv dav rau kev rho tawm kub los ntawm cov hlau zoo li no. Cov ntawv blog no tshawb nrhiav kev siv Sodium Cyanide hauv cov txheej txheem leaching ntawm cov hlau uas muaj arsenic, delving rau hauv nws cov ntsiab cai, cov teeb meem, thiab kev xav txog ib puag ncig.

Lub complexity ntawm Arsenic-Bearing Ores

Hauv kev khawb kub, cov chaw tso dej hydrothermal feem ntau pom qhov twg cov khoom siv kub muaj feem cuam tshuam nrog sulfides thiab cov tshuaj sib xyaw ntawm cov hlau tseem ceeb, arsenic, antimony, lossis tellurium. Hom kev ua kom zoo li no ua rau nws nyuaj rau rov qab tau kub siv cov txheej txheem ib txwm muaj xws li kev sib xyaw, kev sib cais ntawm lub ntiajteb txawj nqus, lossis kev sib xyaw ncaj qha cyanidation . Arsenic, tshwj xeeb, tuaj yeem muaj kev cuam tshuam tsis zoo rau cov txheej txheem leaching cyanide . Piv txwv li, thaum lub sijhawm ci thiab cyaniding ntawm cov kub concentrate, arsenic yog ib qho tseem ceeb uas cuam tshuam rau tus nqi leaching cyanide ntawm kub thiab nyiaj. Raws li cov ntsiab lus arsenic hauv cov kub concentrate nce, tus nqi rho tawm ntawm kub thiab nyiaj siv Sodium cyanide maj mam txo qis.

Cov ntsiab lus ntawm Cyanide Leaching nrog Sodium Cyanide

Cov txheej txheem cyanide leaching nrog sodium cyanide tso siab rau lub peev xwm ntawm cyanide ions los tsim cov complexes ruaj khov nrog kub. Nyob rau hauv cov ntsiab lus ntawm arsenic-cov kabmob ore, muaj cov zaub mov arsenic nyuaj rau cov txheej txheem no. Arsenopyrite, ib hom arsenic-cov kabmob hauv cov pob zeb kub, tuaj yeem hnov ​​​​mob nrog cyanide thiab oxygen. Thaum arsenopyrite yog oxidized nyob rau hauv ib tug alkaline nruab nrab, nws tsim cov khoom uas yuav nqa tawm ntawm cov tshuaj tiv thaiv nto los ntawm agitation. Txawm li cas los xij, oxidation kuj tsim ib yam khoom uas muaj peev xwm tsim tau ib txheej ntawm cov arsenopyrite uas tsis muaj kev cuam tshuam, uas cuam tshuam cov txheej txheem leaching.

Kev txiav txim siab hauv Txoj Cai Leaching

Kev hais ua ntej

Vim yog cov teeb meem uas tau nthuav tawm los ntawm arsenic-bearing ores, pretreatment feem ntau yog tsim nyog. Roasting yog ib txoj hauv kev ua ntej, tab sis nyob rau hauv Teb Chaws Asmeskas, roasting ntawm arsenic-cov kabmob xws li arsenopyrite tsis tuaj yeem siv tau ntxiv lawm vim muaj kev cai nruj ib puag ncig ntawm arsenic emissions. Hloov chaw, lwm cov txheej txheem hydrometallurgical, xws li oxidation siab, lom oxidation, thiab tshuaj oxidation, tab tom tshawb nrhiav.

Leaching xwm txheej

Leaching tej yam kev mob, nrog rau pH, kub, cyanide concentration, thiab agitation, yog ib qho tseem ceeb heev. Cov tshuaj tiv thaiv complexion ntawm kub nrog cyanide feem ntau tshwm sim nyob rau hauv ib tug pH ntau ntawm 9 - 12. thiab kev ntsuam xyuas tau pom tias ib tug pH nyob ib ncig ntawm 11 feem ntau zoo tagnrho rau lub cyanidation system. Kub muaj feem xyuam rau cov tshuaj tiv thaiv tus nqi, thiab nyob rau hauv ib co txheej txheem tshwm sim rau kev kho kub-bearing arsenopyrite, kuj tsis tshua muaj kub yuav siv tau. Cyanide concentration yuav tsum tau ua tib zoo tswj; Cov concentrations siab dua tuaj yeem ua rau nce tus nqi leaching tab sis kuj ua rau muaj kev pheej hmoo ntau dua ib puag ncig thiab kev nyab xeeb.

Ntawv Particle

Qhov loj me me ntawm cov qauv ore kuj tseem cuam tshuam qhov leaching tus nqi. Feem ntau, qhov loj me me me ua rau cov kub leaching ntau dua vim lawv muab thaj chaw loj dua rau cov tshuaj tiv thaiv. Txawm li cas los xij, ua tiav qhov loj me me me me yuav xav tau lub zog ntxiv thiab ua cov kauj ruam.

Kev txhawj xeeb txog ib puag ncig thiab kev nyab xeeb

Cyanide yog ib yam tshuaj lom heev, thiab nws siv hauv kev lag luam mining ua rau muaj kev txhawj xeeb txog kev nyab xeeb thiab kev nyab xeeb. Sodium cyanide khib nyiab kua tuaj yeem ua rau ntau theem ntawm ib puag ncig muaj kuab paug. Nyob rau hauv cov ntaub ntawv ntawm ib tug cyanide nchuav, nws yuav paug av, qhov chaw dej, thiab ua phem rau cov tsiaj qus. Yog li ntawd, kev ntsuas kev nyab xeeb nruj yog siv thaum lub sijhawm khaws cia, kev thauj mus los, thiab siv sodium cyanide. Nws yuav tsum tau muab cia rau hauv qhov chaw muaj cua thiab qhuav, nyiam dua nyob rau hauv ib qho chaw tshwj xeeb warehouse los yog txee nrog ob chav xauv. Kev kuaj xyuas thiab kev saib xyuas tsis tu ncua yog xav tau thaum lub sijhawm khaws cia, thiab qhov kub thiab av noo ntawm qhov chaw cia yuav tsum tau tswj xyuas.

Cov kev xaiv thiab cov kev xav yav tom ntej

Muab cov teeb meem thiab kev pheej hmoo cuam tshuam nrog kev siv cyanide, muaj kev txaus siab ntxiv rau kev tsim lwm txoj hauv kev rau rho tawm kub los ntawm arsenic-cov kabmob ores. Cov tshuaj uas tsis yog-cyanide leaching agents, xws li thiosulfate, thiourea, thiab ib co environmentally friendly organic reagents, raug soj ntsuam. Tsis tas li ntawd, kev nce qib hauv cov thev naus laus zis ua ntej thiab cov txheej txheem rho tawm tau zoo dua yuav tsum txhim kho kub rov qab los ntawm arsenic-cov kabmob ores thaum txo qhov cuam tshuam ib puag ncig.

Xaus lus, txawm hais tias sodium cyanide tseem yog ib qho tseem ceeb hauv kev rho tawm cov arsenic-bearing ores rau kev rho tawm kub , kev lag luam niaj hnub hloov pauv los daws cov teeb meem cuam tshuam. Los ntawm kev nkag siab txog kev sib cuam tshuam nyuaj hauv cov txheej txheem rho tawm, kev siv cov kev nyab xeeb thiab kev ntsuas ib puag ncig kom zoo, thiab tshawb nrhiav lwm txoj hauv kev, kev lag luam mining tuaj yeem siv zog rau cov txheej txheem rho tawm kom ruaj khov thiab ua haujlwm tau zoo dua.