Cov Khoom Siv Nyiaj Kub|Kev tsom xam ntawm tag nrho cov txheej txheem ntawm kub ore los ntawm ore mus rau cov neeg tau txais txiaj ntsig
Vim nws lub cev thiab tshuaj lom neeg tshwj xeeb thiab tshuaj tsis txaus ntseeg, kub muaj txoj hauj lwm tsis haum, kev tsim khoom lag luam loj thiab qib high-igh electing. Nrog rau kev txhim kho kev tshawb fawb thiab thev naus laus zis, daim ntawv thov ntawm cov khoom siv hluav taws xob zoo li cov khoom siv hluav taws xob zoo li niaj hnub no, cov khoom siv tshuaj khib nyiab, tshuaj lom neeg thiab kev tiv thaiv kev tiv thaiv hauv tebchaws. Kab lus no yuav qhia tag nrho cov txheej txheem kub txiaj ntsig los ntawm cov txheej txheem sib cais, thiab cov neeg ua kom tiav, cov nyeem cov duab ua tiav, cov nyeem cov duab ua tiav ntawm cov txiaj ntsig kub.
1. Txheej txheem cej luam ntawm cov peev txheej kub thiab ua ntej kev hnav khaub ncaws hnav cov khoom siv nyiaj kub ntiaj teb yog qhov muab faib tsis yooj yim. Raws li lub ntiaj teb loj tshaj plaws cov neeg tsim khoom kub, South Africa cov zis ua rau ntau tshaj 40% ntawm tag nrho ntiaj teb tag nrho. Raws li cov ntaub ntawv keeb kwm, lub ntiaj teb cov khoom siv nyiaj kub yog 53.2 lab ooj thaum xyoo 1986, thiab mus txog 58.3 lab Kev hloov pauv ntawm cov nqi kub thoob ntiaj teb cuam tshuam rau cov nplai ntawm cov khoom siv kub, thiab tus nqi nce ntxiv ntau qhov kev nthuav dav ntawm muaj peev xwm ntau lawm. Ore crushing thiab sib tsoo yog qhov txuas tseem ceeb hauv cov txiaj ntsig kub. Cov txheej txheem sib txawv yog qhov yuav tsum tau ua tiav raws li cov khoom ntawm cov ore (xws li placer kub lossis leeg kub) thiab qhov tshwm sim xeev ntawm kub. Rau Kev Ntshiab Kev muag khoom kub, nws yog feem ntau yuav tsum mus los ntawm ntau theem ntawm crushing (ntxhib crushing, nruab nrab crushing) thiab sib tsoo (rod milling) rau tag nrho cov zaub mov kub kub. Kev sib tsoo cov nyiaj sib tsoo ncaj qha cuam tshuam rau kev sib cais ua tiav, thiab feem ntau yuav tsum tau mus txog ntau yam ntawm {% rau}} mesh concomeing rau 100%. Cov khoom sib cais sib cais (xws li jigs, thiab lwm yam) feem ntau tau nruab nrog kev sib tsoo thaum ntxov kub rov qab los thaum ua tau ". Kev coj ua ntawm qee cov shandong concentrators tau ua pov thawj tias qhov kev ntsuas no tuaj yeem ua tau zoo txo cov qib kawm thiab txhim kho cov nyiaj rov qab.
2. Cov nyiaj kub pub dawb thiab cov ntawv thov
2.1 Kev sib cais sib cais Cov txheej txheem sib cais yog qhov kev lag luam tshaj plaws thiab siv tau zoo los ua kom tau ntxhib-grained monomer kub. Nws muaj txoj haujlwm tseem ceeb hauv kev xaiv ntawm kub kub thiab feem ntau siv los ua cov txheej txheem ntawm leeg nyiaj tau txiaj ntsig. Lub hauv paus ntsiab lus yog siv cov cuab yeej uas lub ntom ntawm kub (19.32g \/ pap³) yog ntau dua li ntawm Gangue minerals (feem ntau}.} G \/ cm³) rau kev sib cais. Cov cuab yeej sib tshuam sib cais sib cais cov khoom siv suav nrog: Cov qauv yooj yim, feem ntau siv rau kev ua haujlwm zoo, feem ntau siv rau kev ua haujlwm zoo, feem ntau yog siv rau kev rov ua haujlwm hydraulic: siv rau kev rov qab zoo ntawm cov kub zoo-grained
Nyob rau hauv cov nqe lus ntawm thev naus laus zis tsim kho, South Africa tau tsim cov khoom siv tshiab xws li Reichert lub ntsej muag thiab tus neeg siv txoj siv kev siv Lattice; Lub Soviet Union tau siv luv luv-lub khob hydrocyclones los kho cov qis-grained kub thiab cov txiaj ntsig tseem ceeb. Daim ntawv thov kev ua haujlwm hauv Shandong thiab lwm qhov chaw hauv kuv lub teb chaws tau pom tias ntxiv cov qib sib tsoo ntawm cov qib sib tsoo thiab txhim kho tus nqi rov qab ntawm tag nrho cov nroj tsuag.
2.2 amalgamation txujci cov txheej txheem amalgamation yog qhov kev ua kom ntev dua uas siv cov khoom siv cov kua ntub kom tsim amalgam rau cov kub extraction. Hom no yog yooj yim thiab tus nqi qis, thiab txog {{4 4}}}}}}}}}}}}}}}}} paily concentrators hauv Tebchaws Asmeskas tseem siv tus txheej txheem no. Txawm li cas los xij, cov txheej txheem amalgamation ntsib ib txoj kev nyuaj ib puag ncig kev nyuaj: Mercury Vapor yog cov neeg lom thiab endangers kev noj qab haus huv ntawm cov neeg ua haujlwm. Mercury tau ua raws li ib puag ncig thiab yog qhov nyuaj rau kev ua txhaum. Cov kev txwv ntawm cov kev sib txuas lus mercury thoob ntiaj teb tau dhau los ua nruj.
Txog rau qhov kawg no, muaj ntau lub siab tau hloov cov txheej txheem kev kho mob ntawm cov nyiaj kub uas muaj kev xaiv dua tshiab los ntawm mercury amalgamation rau cyanidation. Kev txhim kho yav tom ntej ntawm cov mercury amalgamation nyob ntawm kev sib tawg hauv kev tiv thaiv kev tiv thaiv ib puag ncig. Tsuas yog nyob rau hauv lub premise ntawm kev tswj cov pa mercury muaj kuab lom mercury no tuaj yeem ua lub luag haujlwm. 2.3 Cov txheej txheem flotation yog ib txoj kev siv hluav taws xob feem ntau, thiab yog tsim tshwj xeeb rau kev kho mob iterite thiab sulfide cov ntxhia (xws li pyrite, arsenoprite, thiab lwm yam)! Kub-muaj cov ees renfide muaj peev xwm los ntawm flotation, thiab feem ntau ntawm cov tailings tuaj yeem muab pov tseg, txo qis tus nqi ntawm kev ua tom ntej. Cov thev naus laus zis tseem ceeb: reagent system: feem ntau siv cov neeg sau yog c 2- C5 Alkyl Xasthate. Cov tshuaj sib xyaw muaj cov kev cuam tshuam tseem ceeb, xws li: Xanyl Xanthate + Butyl Ammonium dub tshuaj (piv txwv ntawm cov kub ntawm cov kub-muaj pyrite ees. Sib tov Xanthate nrog cov roj uas tsis muaj-ncov hauv qab xws li kerosene thiab diesel tuaj yeem txhim kho cov ntsuas. 2-}}} sulfur yooj yim hyzole + cov tshuaj lom neeg synation, feem ntau yog ib qho ntxhib thiab peb cov txheej txheem dub lossis ntau cov txheej txheem ua kom zoo nkauj yog swm los.
Kev xyaum ntawm Sichang Kub Mine hauv Zhejiang lub xeev qhia tau hais tias muaj kev sib xyaw ntawm Butyl Amonthate tau nce los ntawm kev hloov ntawm Butyl AmontleS, thiab cov txiaj ntsig zoo dua, thiab kev txhim kho qib siab kuj tseem txhim kho. Cov neeg sau xov tooj tshiab xws li alkyl yog ntsev (tshuaj yog {{4} g \/ ton) muaj kev xaiv zoo rau cov kub-bearing pyrite.
3. Kub extraction metallurgical cov thev naus laus zis txij li cov txheej txheem muaj kev lag luam hauv lub xyoo pua puv 19, muaj nqi tsawg thiab rov ua haujlwm siab. Tus txheej txheem yooj yim yog nyob rau hauv Alkaline tej yam kev mob, kub thiab cyanide ions tsim ib qho ruaj khov [AU (cn) ⁻ complex thiab yaj. Cyanidation txheej txheem classification: Siv cov khoom siv kub ua kom zoo nkauj Cyanidation: Piv txwv li Teorgio ntau congentrator nyob rau hauv Cananidation (LEaching tus nqi ntawm kev hloov pauv ntawm 96.3%), thiab cov kab ke Cyanidation Pretreatment Technology: Ci Oxidation thiab lwm yam kev kho mob tshwm sim rau cov kev txwv ntawm Cyanidation yog tias nws muaj cov tshuaj lom neeg tsis zoo thiab cov cyanide muaj kev lom zem heev thiab muaj kev pom zoo ib puag ncig. Sulfides (xws li pyrroTite, chalcocite) thiab cov zaub mov tooj liab, "cyanide killers" yuav haus ntau ntawm cov pa dej ntau thiab ua kom tsawg.
3.2 Heaping Technology heatp leaching yog ib txoj kev lag luam thiab siv tau zoo thiab siv tau}. {4}}. 5g \/ t). Kub tau rov zoo los ntawm kev ua kom huv los ntawm lub tsev ib pawg ntawm cov ore thiab zom cov tshuaj cyanide. Qhov rov qab them rov qab ntau tshaj plaws (3 0% {% {%), nyob ntawm qhov xwm ntawm cov ore thiab qib kev tswj hwm. Cov txheej txheem tseem ceeb ntawm heap leaching: Chaw tsim kho cov khoom siv tshuaj tsuag, feem ntau faib cov khoom siv cyomembrane (feem ntau {12}}. 1% nacn) thiab ph ({10-11}}) Kub}) Kub Rov Siv Cov Khoom Siv Hluav Taws Xob Ua Ntej Ntawm Cov Khoom Siv Hluav Taws Xob, ua rau muaj cov khoom siv tsawg thiab cov ntaub pua plag uas siv tau. Kuv lub teb chaws pib tshawb fawb ntawm Hushan kub kuv li xyoo 1979, thiab kev sim siab tau raug coj los ntawm tus kheej, Henan, Henan thiab lwm qhov chaw. Txawm li cas los xij, tus nqi yog qhov siab dua vim yog qhov ntsuas me me thiab qis dua qib kev siv tshuab.
Heap leaching muaj cov mob tso cai nruj me me BMCLUL tau qhia tias ib qho kev ntsuam xyuas kev sib tw yuav tsum tau nqa ua ntej nqa kom ntsuas qhov kev haum ntawm cov ore. 3.3 Thiourea thev naus laus zis ua ib qho kev xaiv ua ke rau cyanide, cov khoom siv tsis muaj txiaj ntsig, thiab kev siv dag zog zoo dua, thiab nrawm dua cyanide). Sietiet Scient лолещыков Kev Kawm Txog Cov Neeg Ua Si Thioura: 10%}}}}}} Kuv lub teb chaws Changchun Kub Kev Tshawb Fawb Kub tau ua kev tshawb fawb systemicatic thiab tsim los ntawm thioura kub extraction nroj tsuag uas cov txheej txheem 10 tons ntawm flotation mloog ib hnub. Thiourea yog tsim tshwj xeeb rau kev kho cov nyiaj-uas muaj cov nyiaj ees, dissolving nyiaj 10.8 zaug sai dua cyanide.
Txoj kev cov nyom ntawm tus qauv thiourea yog cov reagent siab (thiotea tau yooj yim oxidized thiab decomosion thiab decomposion thiab decomposion thiab decomposion thiab decomosion thiab decoms tswj cov txheej txheem. Nws tseem tsis tau thov rau ntawm cov nplai loj hauv kev siv cov ntawv thov kev lag luam. 3.4 Cov kab mob carbon-hauv-pulp hom (CIP \/ CL) cov pa roj carbon-in-pulp hom-pulp yog qhov kev siv thev naus laus zis ntau tshaj xyoo 1970. Nws siv cov pa roj carbon monoxide mus rau adsorb ncaj qha-cyanide cov khoom ntawm cov slurry, tshem tawm cov kauj ruam-kua sib cais. Xyoo 1977, thawj cov pa roj carbon-in-pulp yog tsim nyob rau hauv Holmesket kub hauv Tebchaws Meskas, thiab tam sim no muaj ntau dua 40 hauv siv thoob ntiaj teb. Txheej Txheem Kawm: Adsorption System: {{13g \/ l cov pa roj carbon monoxide (} Cov pa roj carbon pib dua: cov kua qaub ntxuav-cua sov kev kho mob kom rov ua haujlwm.
Cov pa roj carbon-in-pulp hom variant: cil (leaching thiab cov khoom lag luam uas sib xyaw ua ke, txuag tau los ntawm kev sib nqus me me kom txo kev ntsuas kev ntsuas. Kuv lub tebchaws Linghu Kub Mine thiab Chiweigou Kub tau ua tiav Applbon-in-pulp thev naus laus zis. Cov kev tshawb fawb thiab kev nthuav dav tsom rau cov ntaub ntawv tshiab, xws li polyacrylonitrile fiber fiber ntau, txhawm rau txhim kho kev ua tiav cov pa roj carbon, thiab lwm yam. 4. Tawm cov kev cia siab ntxiv rau cov txheej txheem tseem ceeb: Siv Chlorinies cov qauv: Tsim kom muaj cov tshuaj ntsuab oxidant: Tsim kom muaj cov tshuaj pleev xim rau cov roj av Cov Txheej Txheem Tshwj Xeeb: Siv cov kab mob Acidophilic: Siv cov khoom siv hluav taws xob tsis zoo los hloov cov kub siab: Kev xaiv sib cais ntawm cov kub siab: txhawb nqa cov txheej txheem leaching.
Kev nthuav dav ntxiv: Cov Khoom Siv Hluav Taws Kub: Cov Khoom Siv Hluav Taws Xob " Cov neeg tau txais txiaj ntsig yuav qhia cov ncauj lus hauv qab no: Green: Kev noj tshuaj lom neeg tsawg dua: Ua kom muaj txiaj ntsig zoo rau kev ua kom muaj txiaj ntsig zoo rau kev ua kom muaj zog:
V. Qhov Kawg Cov Txheej Txheem Kub Siab tau raug nplua thiab txuas ntxiv mus rau kev sib cais, ntawm cov txheej txheem niaj hnub sib cais, ntawm lwm cov txheej txheem, ua cov kev daws teeb meem rau cov yam ntxwv sib txawv. Concentrators feem ntau yuav tau txais ua ke cov txheej txheem xws li "lub ntiajteb sib tsoo-floanidation-cyanidation" lossis "flotation-ci-cyanidation" kom ua tiav cov txiaj ntsig kev lag luam zoo tshaj plaws. Yav tom ntej, nrog kev nce qib ntawm thev naus laus zis thiab kev txhim kho ntawm kev tiv thaiv ib puag ncig, yuav tau txais txiaj ntsig zoo ntxiv, yuav tau txais txiaj ntsig ntau dua thiab cov txiaj ntsig kev lag luam ntawm cov txiaj ntsig kub. Los ntawm kev ua lag luam tshiab, qhov kev lag luam ntau yuav zoo dua li qhov xav tau ntawm kev lag luam kev lag luam thiab cov peev txheej thiab ua tiav cov peev txheej tau siv tau.
