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Kev siv plua plav hlau thiab kev faib tawm

Kev lag luam hlau thiab hlau yog ib qho kev siv hluav taws xob thiab kev lag luam uas siv zog ntau. Kev tsim cov hlau thiab hlau siv ntau lub zog thiab peev txheej, thiab tib lub sijhawm tsim ntau cov khoom lag luam pov tseg. Yog tias cov khoom pov tseg tsis tuaj yeem ua haujlwm tau zoo, nws yuav tsis tsuas yog coj lub zog loj rau thaj chaw ib puag ncig ib puag ncig, tab sis kuj ua rau pov tseg cov peev txheej loj.

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Xyoo tsis ntev los no, kuv lub tebchaws tau qhia txog cov cai tswjfwm kev lag luam txhawm rau txhawb kev txhim kho kev lag luam pov tseg cov khoom pov tseg; ntau lub nroog kuj tau tshaj tawm cov cai cuam tshuam los txhawb kev txuag hluav taws xob, txo qis, thiab hloov pauv ntsuab hauv kev lag luam hlau. Kev tshaj tawm thiab kev ua tiav ntawm cov txheej txheem cuam tshuam muab kev txhawb nqa txoj cai, kev qhia paub thiab kev qhia nyiaj txiag rau kev txhim kho dav dav thiab siv cov khoom pov tseg cov khoom pov tseg hauv kev lag luam hlau thiab hlau, qhia meej txog kev txhim kho kev coj ua ntawm kev lag luam siv peev txheej, thiab txhawb nqa kev siv tag nrho cov khoom siv pov tseg pov tseg hauv kev lag luam hlau thiab hlau mus rau qhov kev coj ua tshwj xeeb, ntsuas thiab tus nqi siab.

Tam sim no, cov txheej txheem hlau smelting tau pib ua tiav cov qauv tsim khoom. Ntawm lawv, cov dej pov tseg yog 100% rov ua dua tshiab, cov pa tso pa mus txog lub teb chaws cov txheej txheem tso pa tawm tsawg kawg nkaus, thiab kev siv cov hlau thiab cov hlau ua kom huv huv xws li hlau thiab hlau hmoov av thiab sludge tau dhau los ua qhov teeb meem tseem ceeb uas txwv kev txhim kho kom ruaj khov ntawm cov hlau thiab hlau ntsuab rov ua dua tshiab. Ntxiv dag zog rau lub tswv yim tshiab, ntxiv dag zog rau kev tshawb fawb thiab kev txhim kho, siv kev hloov pauv ntsuab, thiab ntxiv dag zog rau kev tswj hwm pov tseg tuaj yeem txhim kho kev siv cov khoom pov tseg thoob plaws hauv tag nrho cov txheej txheem ntawm cov hlau thiab hlau kev lag luam, thiab txhawb kev tsim nyog txuas ntxiv ntawm cov hlau thiab hlau kev lag luam saw mus rau xoom emissions. Yog li ntawd, kev siv lub tswv yim ntawm "cov khoom pov tseg ntawm cov hlau thiab hlau tsis tawm hauv lub hoobkas" muaj qhov ua tau zoo tseem ceeb rau kev txhim kho ntsuab ntawm kev lag luam hlau, xoom kev loj hlob ntawm cov khoom pov tseg, thiab txuag hluav taws xob thiab txo qis. Nws tseem yog qhov xav tau rau kev txhim kho ntsuab ntsuab ntawm kev lag luam hlau. Kab lus no nthuav qhia ntxaws txog qhov ua rau, kev faib tawm, thiab kev siv cov txheej txheem siv cov hmoov av hlau thiab sludge.

Muaj ntau hom hlau hmoov av

Muaj ntau hom khoom pov tseg hauv cov hlau thiab hlau kev lag luam, feem ntau suav nrog lub tshuab cua sov rauv tawg, steel slag, hlau muaj cov hmoov av sludge, desulfurization gypsum, desulfurization tshauv, thiab ferroalloy slag. Ntawm lawv, qhov loj tshaj plaws ntawm cov khoom pov tseg yog zom cov slag, ua raws li cov hmoov av thiab av nkos. Xyoo 2019, kuv lub teb chaws cov hlau nyoos tsim tawm yog li ntawm 996 lab tons, thiab cov hmoov av hlau tau muab xam ntawm 10% ntawm cov hlau nyoos tawm los txog li 99.6 lab tons.

Hlau plua plav thiab sludge tuaj los ntawm kev ua haujlwm tsim khoom ntawm cov hlau, feem ntau yog hais txog cov khib nyiab uas tau tsim tawm tom qab cov pa roj kub kub tau muab pov tseg los ntawm cov chaw tshem cov plua plav hauv cov txheej txheem tsim khoom ntawm kev ua raw khoom, sintering, pelletizing, ironmaking, steelmaking, thiab Cov txheej txheem txuas ntxiv tom ntej, Cov khoom pov tseg tau tsim hauv cov txheej txheem ntxuav, thiab lwm yam. Raws li kev tsim cov hmoov av thiab av, cov hmoov av thiab av feem ntau suav nrog cov hmoov av thiab cov av uas tau khaws los ntawm cov neeg khaws cov hmoov av thaum lub sijhawm thauj thiab ua cov txheej txheem (ua hmoov av, av nkos) , thiab plua plav thiab av nkos sau thaum lub txheej txheem kev ua kom huv ntawm cov cua sov ua kom tawg (tawg rauv taws ua kom sov tshauv, tawg rauv ua kom av nkos)), hmoov av thiab sludge sau los ntawm cov hloov pauv steelmaking roj av (hloov hmoov av lossis sludge), hmoov av thiab sludge sau los ntawm hluav taws xob cua sov steelmaking flue roj (hluav taws xob rauv hmoov av lossis sludge), hlau oxide nplai tev tawm thaum lub sij hawm hlau dov, hlau dov dej khib nyiab Hauv cov txheej txheem rov ua dua tshiab, udge zoo nyob rau hauv lub tank tso dej (sludge theem nrab los ntawm cov hlau ntxig), tom qab ua tiav ntawm cov ntawv hlau lossis cov hlau thiab cov hmoov av thiab sludge tau sau thaum lub sijhawm ua haujlwm tu, thiab lwm yam.

Ntawm lawv, ib puag ncig tshem tawm cov plua plav feem ntau suav nrog tshem tawm ntawm lub tank, tig cov khoom sib txuas ntawm txoj siv thauj khoom, tshuaj ntsuam hauv qab lub tank, thauj cov khoom siv raw rau hauv lub raj mis, sau cov khoom ntim, thiab lwm yam. Cov hmoov av zoo yog 5 g/m3 ~ 8 g/ m3 xav.

Sintering hmoov av sludge feem ntau yog hmoov av tshauv tsim nyob rau hauv cov txheej txheem sintering, suav nrog cov hmoov tshauv tshauv los ntawm lub tshuab lub taub hau flue roj, cov hmoov tshauv los ntawm lub tshuab tw, thiab lwm yam. npua hlau.

Tus nqi ntawm cov cua sov ua kom tawg (cov hmoov tshauv, cov av nkos, cov hmoov av tshem tawm cov hmoov tshauv) tsim tawm yog kwv yees li 9 kg/tuj npua hlau ~ 22 kg/tuj npua hlau. Thaum cov khoom siv hlau ua raw khoom muaj qee feem ntawm cov hlau zinc, 95% txog 98% ntawm cov hlau zinc nkag mus rau hauv cov hmoov av thiab av nkos hauv daim ntawv ntawm qhov hloov pauv, thiab cov ntsiab lus zinc ntawm hmoov av thiab av nkos yog 20 txog 30 npaug ntawm raw khoom.

Qhov tso tawm ntawm cov hmoov av hloov pauv thiab av nkos yog kwv yees li 9 kg/ton steel rau 15 kg/ton steel. Vim tias qhov kub thiab txias ntawm ib feem ntawm cov hlau seem thiab cov hloov pauv, thaum cov hlau seem raug xa rov qab mus rau cov hloov pauv rau kev tsim dua tshiab, hlau xws li zinc thiab hlau nkag rau hauv cov hmoov av thiab av nkos, thiab cov ntsiab lus hlau hauv cov hmoov av thiab av yog siab.

Hluav taws xob cua sov (EAF) cov hmoov av tawm yog li 16 kg/tuj hlau ~ 20 kg/tuj hlau. Cov khoom siv hluav taws xob ua hluav taws xob ua hluav taws xob ua hluav taws xob galvanized yog qhov loj, thiab feem ntau ntawm cov hlau zinc hauv cov seem rov los rau hauv cov hmoov av thiab av hauv qhov kub thiab txias, ua rau cov ntsiab lus zinc siab heev hauv cov hmoov av thiab av. Cov ntsiab lus ntawm zinc thiab hlau hauv plua plav thiab av nkos ntawm cov hlau seem sib txawv kuj txawv.

Lwm cov plua plav thiab av nkos, xws li cov hmoov av hauv qab, cov hlau oxide nplai, thiab cov roj av sludge tsim thaum lub sij hawm hlau dov, ntxiv rau cov plua plav thiab cov av nkos tsim thaum lub sij hawm forging, txiav, vuam, khaws thiab lwm yam ua tom ntej thiab tu txheej txheem.

Los ntawm kev xav ntawm kev tsim cov hlau plua plav thiab av nkos, nws muaj plaub yam ntxwv tseem ceeb: ib qho yog cov khoom sib txawv thiab cov khoom loj; thib ob, cov lus sib xyaw ua ke, cov ntsiab lus qis thiab kev hloov pauv loj; thib peb, qhov loj me me, muaj kev phom sij txaus ntshai; plaub, kev siv peev txheej Cov peev txheej muaj txiaj ntsig zoo.

Cov txheej txheem kho tam sim no ntawm cov hmoov av thiab av nkos muaj qee yam txwv

Tam sim no, txoj kev kho cov hlau plua plav thiab sludge feem ntau yog khaws cia thiab pov tseg pov tseg thiab rov qab mus rau lub qhov cub tawg rau kev ua sintering. Kev khaws khoom tsis yog tsuas yog siv thaj av ntau thiab ua paug rau ib puag ncig ib puag ncig, tab sis kuj ua rau muaj kev pov tseg ntau ntawm cov peev txheej. Xyoo 2019, tus nqi ntawm cov hmoov av thiab av nkos tsim hauv kuv lub tebchaws yog kwv yees li 100 lab tons, suav los ntawm 50% ntawm cov khoom khaws cia, nyob ntau dua 2500 daim av.

Yog tias nws tsuas yog ua tiav los ntawm kev ua sintering lossis pelletizing thiab tom qab ntawd nkag mus rau hauv lub tshuab ua kom tawg dua, nws yuav ua rau cov hlau hlau xws li zinc hauv plua plav thiab av nkos mus rau hauv cov cua sov tawg, uas yuav cuam tshuam tsis zoo rau cov hlau uas muaj them nyiaj, coke thiab cov txheej txheem refractory ntawm lub cub tawg, thiab tom qab ntawd ua rau Kev ruaj ntseg ntawm lub tshuab ua kom tawg yuav ua rau lub neej kev pab cuam ntawm lub tshuab ua kom tawg thiab nce tus nqi tsim khoom ntawm lub tuam txhab. Piv txwv li, ib zaug zinc hlau thiab alkali tso nyiaj ntau dhau ntawm qhov chaw ntawm lub qhov cub tawg, nws yooj yim los tsim cov cua sov ua kom sov, cuam tshuam qhov kev poob qis ntawm tus nqi, thiab txawm tias ua rau cov khoom raug ncua. Yog tias zinc hlau thiab alkali tso nyiaj ntau dhau rau hauv lub qhov cub tawg, nws yooj yim ua rau lub qhov cub tawg kom nthuav dav thiab puas ntsoog; yog tias zinc hlau thiab alkali ntau dhau ntawm tuyere, nws yooj yim rau hlawv cov khoom siv cua xws li tuyere. Raws li cov txheeb cais cuam tshuam, lub hnub nyoog ntawm cov cua sov tuaj yeem txo los ntawm 2 Ntau xyoo.

Ib qho ntxiv, kuv lub teb chaws cov hlau thiab cov hlau siv cov khoom siv pov tseg muaj teeb meem xws li cov cuab yeej siv hluav taws xob siab, cov peev txheej rov qab tau zoo tsawg, thiab ob peb yam kev pab rov zoo. Ntau lub tuam txhab hlau thiab hlau tau xaiv xaiv rov ua dua me me ntawm cov hlau thiab cov hlau hlau ua cov khoom pov tseg, lossis teeb tsa qhov chaw tshwj xeeb rau khaws cia lossis muag sab nraud. Txog kev lag luam hlau nws tus kheej, nws yog qhov maj mus nrhiav cov hlau ua kom zoo thiab siv tshuaj kho dej sludge xws li hlau thiab zinc txhawm rau daws cov teeb meem ntawm kev ua av hauv av ntawm cov hmoov av thiab sludge pov tseg, ib puag ncig muaj kuab paug, cov khoom pov tseg, thiab nyuaj hauv kev rov ua dua tshiab.

Kev siv cov peev txheej ntawm cov hmoov av thiab av nkos yog qhov tseem ceeb heev

Txhawb nqa cov hlau thiab hlau kev lag luam kom ua tiav kev ua tau zoo ntsuab thiab kev txhim kho ncig. Hlau smelting thiab ua lag luam ntxiv dag zog rau kev tswj pov tseg, txo qhov teeb meem ntawm kev siv cov khoom pov tseg pov tseg, txhim kho kev ua tiav ntawm kev siv pov tseg cov khoom pov tseg, thiab txhawb kev rov ua dua tshiab ntawm cov peev txheej pov tseg. Qhov no tsis yog tsuas yog suav nrog thiab kev sib koom tes ntawm cov tuam txhab thiab cov nroog, tab sis kuj yog tib txoj hauv kev kom ua tiav kev txhim kho kom zoo ntawm kev rov ua dua ntsuab. .

Pab kev hloov pauv thiab kho dua tshiab ntawm cov tuam txhab steel kev lag luam hauv nroog thiab kev txhim kho kev txhim kho kev lag luam. Cov hlau thiab hlau cov khoom pov tseg yog cov khoom muaj nqis nyob hauv keeb kwm kev txhim kho ntawm cov peev txheej hauv nroog, thiab nws tseem yog qhov pib tseem ceeb rau kev hloov pauv thiab kho dua tshiab ntawm cov nroog sib sau ua ke hauv keeb kwm yav dhau los ntawm lub sijhawm tshiab. Lub xeev tau tshaj tawm cov txheej txheem kev txhawb nqa cov ntaub ntawv thiab cuam tshuam txog kev txwv rau kev siv tag nrho cov hlau pov tseg, uas tau thawb cov hlau kev lag luam mus rau ntsuab thiab kev txhim kho ncig los ntawm ob qib kev txhawb nqa zoo thiab thim rov qab. Nyob rau yav tom ntej, kuv lub tebchaws yuav tso cov txheej txheem siab dua thiab nruj dua qhov xav tau rau kev siv thoob plaws ntau yam khoom pov tseg. Tus lej txwv kev txwv yuav muab txoj hauv kev tseem ceeb rau kev txhim kho hauv cheeb tsam ntawm kev siv cov peev txheej tsim khoom lag luam, thiab tseem ua raws li qhov xav tau sai ntawm kev hloov pauv kev lag luam thiab kho dua tshiab hauv cov nroog hlau sib sau ua ke.

Ua kom tiav cov peev txheej zoo. kuv lub teb chaws vam khom siab rau cov hlau txawv teb chaws cuam tshuam rau kuv lub teb chaws cov peev txheej ruaj ntseg ntau. Ntxiv nrog rau cov hlau loj, cov hlau thiab cov hmoov av hlau tseem muaj ntau yam tseem ceeb hlau, xws li chromium, manganese, npib tsib xee, tooj liab, cobalt, vanadium, molybdenum, niobium, zinc, potassium, sodium, kub, nyiaj, indium, thiab lwm yam. Kev tshawb fawb tshawb fawb ntawm cov hlau uas muaj txiaj ntsig tuaj yeem txhim kho cov peev txheej tseem ceeb xws li hlau ore, manganese ore, nickel ore, chromium ore uas kuv lub tebchaws nyob ntawm cov khoom siv, thiab molybdenum ore thiab vanadium ore uas nyuaj rau kuv.

Tam sim nrhiav qhov txheej txheem siv txheej txheem tshiab ntawm cov hmoov av thiab av nkos

Tam sim no, kuv lub teb chaws cov txheej txheem kev kho rau cov plua plav hlau thiab sludge feem ntau suav nrog cov txheej txheem lub cev, cov txheej txheem ntub, thiab cov txheej txheem tua hluav taws. Txoj hauv kev lub cev feem ntau suav nrog sib cais sib nqus thiab hydraulic kauv ntws sib cais; txoj hauv kev ntub yog kev siv cov kua qaub ua kua, alkali leaching lossis leaching + ci thiab lwm yam txheej txheem los kho cov hmoov av hlau thiab sludge; txoj hauv kev tua hluav taws feem ntau suav nrog txoj kev ua sintering, txheej txheem pellet, thiab txoj hauv kev txo qis ncaj qha (Lub tshuab ua kom lub qhov cub tawg thiab lub tshuab ua hluav taws xob ua hluav taws xob ua haujlwm, thiab lwm yam), txo txoj kev zom.

Cov txheej txheem ntawm kev kho cov hmoov av hlau thiab sludge los ntawm lub cev txheej txheem yog qhov yooj yim. Qhov tsis zoo yog qhov nce qib ntawm zinc thiab lwm yam hlau muaj tsawg, thiab cov ntsiab lus zinc ntawm cov khoom lag luam zinc nplua nuj tsawg dhau thiab tus nqi me me. Txoj kev siv lub cev dav dav tsuas yog siv ua txheej txheem kho ua ntej rau txheej txheem ntub dej lossis hluav taws. Cov txheej txheem ntub txheej txheem yog corroded hnyav, feem ntau ntawm cov haujlwm ua haujlwm hnyav, thiab kev ua haujlwm tsis zoo, uas tsis sib xws nrog cov plua plav thiab av nkos ntawm cov tuam txhab hlau. Cov txheej txheem pyrotechnical yog txoj hauv kev tseem ceeb los xaiv cov hmoov av hlau thiab sludge cov peev txheej siv vim nws qhov kev ua haujlwm siab thiab kev kho mob loj ntawm cov hmoov av hlau thiab sludge.

Hauv cov txheej txheem pyrotechnic ntawm kev siv peev txheej ntawm cov hmoov av thiab av nkos, cov khoom lag luam ntawm cov txheej txheem cov tshuab ua kom sov yog cov hlau pellets, uas muaj qhov tsis zoo ntawm qib qis ntawm cov hlau thiab lwm yam hlau thiab ntau ntawm slag. Lub qhov cub tawg yog nquag tsim lub nplhaib thaum siv, kev saib xyuas tus nqi siab, txo lub sijhawm ntev, thiab qhov yuav tsum tau ua rau cov txheej txheem yog qhov nruj. Kev txo cov tshuab ntxhua khaub ncaws tau nyiam mloog ntau vim nws qhov zoo xws li kev hloov pauv tau dav ntawm cov ntaub ntawv raw thiab lub zog qis uas yuav tsum tau them.

Lub ntsej muag ntawm qhov xwm txheej tshiab uas kuv lub tebchaws lub zog, peev txheej, ib puag ncig thiab lwm yam kev nyuaj siab tau nce ntxiv, kev lag luam hlau hais txog kev siv cov peev txheej pov tseg tau zoo yog qhov tseem ceeb thiab xaiv tsis tau rau kev ua tiav kev txhim kho ntsuab thiab muaj kev vam meej. Cov hmoov av hlau thiab sludge siv cov cuab yeej siv thev naus laus zis nrog kev nqis peev zoo dua, kev tiv thaiv ib puag ncig zoo dua, thiab kev siv peev txheej siab dua tsis yog tsuas yog yuav los tab sis tseem muaj txiaj ntsig zoo rau kev lag luam hlau thiab hlau hlau suav nrog cov hlau tsis huv. Nws kuj tseem tau txais txiaj ntsig los ntawm lub sijhawm thiab ib puag ncig ua rau hlau. Qhov xav tau tshiab ntawm kev lag luam.


Sijhawm Tshaj Tawm: Jul-23-2021