Tom qab tshaj tawm lub Kaum Hlis qhov teeb meem ntawm International Mining, thiab tshwj xeeb tshaj yog txhua xyoo nyob rau hauv-qhov crushing thiab conveying feature, peb tau saib ze dua ntawm ib qho ntawm cov ntsiab lus tseem ceeb uas ua rau cov tshuab no, lub apron feeder.
Hauv mining,apron feedersua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev ua haujlwm du thiab nce sijhawm. Lawv daim ntawv thov nyob rau hauv cov ntxhia ua circuits yog ntau haiv neeg; Txawm li cas los xij, lawv lub peev xwm tag nrho tsis paub zoo thoob plaws hauv kev lag luam, ua rau ntau cov lus nug tau tsa.
Martin Yester, Kev Txhawb Khoom Ntiaj Teb, Metso Bulk Products, teb qee cov lus nug tseem ceeb dua.
Hauv cov ntsiab lus yooj yim, lub apron feeder (tseem hu ua lub lauj kaub feeder) yog ib hom khoom noj khoom haus uas siv rau hauv kev tuav cov khoom siv los hloov (pub) cov khoom mus rau lwm yam khoom siv lossis los ntawm cov khoom muag, lub thawv los yog hopper kom rho tawm cov khoom (ore / pob zeb) ) ntawm tus nqi tswj.
Cov feeders no tuaj yeem siv rau ntau yam kev siv hauv thawj, theem nrab thiab theem nrab (rov qab) kev ua haujlwm.
Lub tsheb laij teb saw apron feeders xa mus rau cov hlua khi hauv qab, cov menyuam thiab cov log tsheb uas tseem siv rau cov tsheb bulldozers thiab excavators.Qhov no hom feeder dominates industries uas cov neeg siv xav tau ib tug feeder uas muaj peev xwm extract cov ntaub ntawv nrog txawv zog.Polyurethane seals nyob rau hauv lub saw tiv thaiv cov khoom abrasive los ntawm nkag mus rau hauv cov pins thiab bushings, txo cov hnav thiab txuas cov cuab yeej siv lub neej piv rau cov chains qhuav.Tsheb laij teb saw apron feeders kuj txo cov suab nrov rau kev ua haujlwm ntsiag to.Cov kev sib txuas ntawm cov saw yog cov cua sov kho rau lub neej ntev.
Zuag qhia tag nrho, cov txiaj ntsig suav nrog kev ntseeg tau ntau dua, tsawg dua qhov khoom seem, kev saib xyuas tsawg dua thiab kev tswj hwm kev noj zaub mov zoo dua.Nyob rau hauv kev xa rov qab, cov txiaj ntsig no nce kev tsim khoom nrog tsawg tsawg hauv cov txheej txheem ntxhia.
Ib qho kev ntseeg txogapron feedersyog tias lawv yuav tsum tau nruab kab rov tav.Zoo, tsis sib haum xeeb rau kev ntseeg nrov, lawv tuaj yeem ntsia tau rau ntawm txoj kab nqes!Qhov no coj tau ntau yam txiaj ntsig thiab nta ntxiv.Thaum txhim kho lub apron feeder rau ntawm txoj kab nqes, qhov chaw tsawg dua yuav tsum tau tag nrho - tsis yog txoj kab nqes xwb. txwv qhov chaw hauv pem teb, nws kuj txo qhov siab ntawm qhov tau txais hopper.Sloping apron feeders muaj kev zam txim ntau dua thaum nws los txog rau cov khoom loj dua thiab, tag nrho, yuav ua rau kom lub ntim nyob rau hauv lub hopper thiab txo lub voj voog lub sij hawm rau cov tsheb thauj khoom.
Nco ntsoov tias muaj qee yam yuav tsum tau paub txog thaum txhim kho lub lauj kaub feeder rau ntawm txoj kab nqes kom ua kom zoo dua cov txheej txheem.A tsim kom zoo hopper, lub kaum sab xis ntawm inclination, tsim cov qauv kev txhawb nqa, thiab cov kab ke ntawm cov kab lus thiab cov ntaiv ncig lub feeder yog txhua yam tseem ceeb.
Ib qho kev xav tsis zoo txog kev khiav hauj lwm ib qho cuab yeej yog: "Qhov sai dua qhov zoo dua." Raws li deb li apron feeders mus, qhov tsis zoo. Ceev ceev los ntawm kev nrhiav qhov sib npaug ntawm kev ua tau zoo thiab kev xa khoom ceev.Lawv khiav qeeb dua txoj siv sia, tab sis vim zoo.
Feem ntau, qhov zoo tshaj plaws ceev ntawm lub apron feeder yog 0.05-0.40 m / s.Yog hais tias cov ore yog non-abrasive, lub ceev yuav nce mus rau saum toj no 0.30 m / s vim muaj peev xwm txo tau hnav.
Kev nrawm dua ua rau tsis ua haujlwm: yog tias koj qhov nrawm dhau lawm, koj yuav muaj kev pheej hmoo nrawm ntawm cov khoom siv.Energy efficiency kuj txo qis vim qhov xav tau ntau zog.
Lwm qhov teeb meem uas yuav tsum nco ntsoov thaum khiav lub apron feeder ntawm kev kub ceev yog qhov ua rau muaj kev nplua nyiaj ntau dua.Tej zaum yuav muaj kev cuam tshuam ntawm cov khoom siv thiab cov phaj.Vim tias muaj peev xwm muaj cov plua plav tawm hauv huab cua, kev tsim cov nplua tsis tau. tsuas yog tsim teeb meem ntau dua, tab sis kuj tsim qhov chaw ua haujlwm txaus ntshai rau cov neeg ua haujlwm tag nrho.Yog li ntawd, kev nrhiav qhov zoo tshaj plaws yog qhov tseem ceeb tshaj rau kev cog qoob loo thiab kev nyab xeeb ntawm kev ua haujlwm.
Apron feeders muaj kev txwv thaum nws los txog rau qhov loj thiab hom ore.Txoj kev txwv yuav txawv, tab sis cov khoom yuav tsum tsis txhob muab pov tseg pointlessly mus rau lub feeder.Koj yuav tsum xav txog tsis tau tsuas yog daim ntawv thov uas koj yuav siv lub feeder, tab sis kuj nyob qhov twg. feeder yuav muab tso rau hauv tus txheej txheem.
Feem ntau, txoj cai kev lag luam rau apron feeder qhov ntau thiab tsawg yuav tsum ua raws li qhov dav ntawm lub lauj kaub (sab hauv daim tiab) yuav tsum yog ob npaug ntawm qhov loj tshaj plaws ntawm cov khoom.Lwm yam, xws li ib qho tsim kom zoo qhib hopper ua ke nrog kev siv "pob zeb flip phaj", yuav cuam tshuam rau lub lauj kaub loj, tab sis qhov no tsuas yog cuam tshuam rau qee qhov xwm txheej.
Nws tsis yog qhov tsis yooj yim uas tuaj yeem rho tawm 1,500mm ntawm cov khoom siv yog siv 3,000mm dav feeder.Negative 300mm cov khoom muab rho tawm los ntawm crusher ore pawg los yog cia / sib tov lub thawv feem ntau yog muab rho tawm siv lub apron feeder los pub cov crusher thib ob.
Thaum sizing lub apron feeder thiab coj lub cev tsav (lub cev muaj zog), raws li nrog ntau daim ntawm cov khoom siv nyob rau hauv kev lag luam mining, kev paub thiab kev paub ntawm tag nrho cov txheej txheem yog invaluable.Apron feeder sizing yuav tsum tau ib tug yooj yim kev paub ntawm lub Hoobkas cov ntaub ntawv kom raug cov txheej txheem. xav tau los ntawm tus neeg muag khoom "Daim Ntawv Thov Cov Ntaub Ntawv" (lossis tus neeg muag khoom tau txais lawv cov ntaub ntawv).
Cov txheej txheem tseem ceeb uas yuav tsum tau txiav txim siab suav nrog tus nqi pub (nruab nrab thiab ib txwm), cov khoom siv (xws li ya raws, gradation thiab cov duab), qhov siab tshaj plaws thaiv qhov loj ntawm ore / pob zeb, qhov ntom ntom ntawm ore / pob zeb (qhov siab tshaj plaws thiab qhov tsawg kawg nkaus) thiab pub thiab qhov hluav taws xob tej yam kev mob.
Txawm li cas los xij, qee zaum kuj muaj peev xwm ntxiv rau cov txheej txheem apron feeder sizing uas yuav tsum tau suav nrog.Ib qho tseem ceeb ntxiv uas cov neeg muag khoom yuav tsum nug txog yog hopper configuration.Tshwj xeeb, lub hopper txiav ntev qhib (L2) yog nyob ncaj qha saum lub apron feeder.Qhov twg muaj feem xyuam, qhov no yog ib qho tseem ceeb tsis tau tsuas yog rau kom raug sizing ib apron feeder, tab sis kuj rau lub tsav system.
Raws li tau hais los saum no, qhov ntom ntom ntawm ore / pob zeb yog ib qho ntawm cov txheej txheem tsim nyog thiab yuav tsum suav nrog cov khoom noj khoom haus zoo. Qhov ntom yog qhov hnyav ntawm cov khoom hauv ib lub ntim, feem ntau qhov ntom ntom yog ntsuas hauv tons ib cubic meter (t / m³) lossis phaus ib qho cubic ko taw (LBS / FT³) .A
Yog li ntawd yog vim li cas bulk ceev yog li tseem ceeb?Apron feeders yog volumetric feeders, uas txhais tau hais tias bulk ntom yog siv los txiav txim siab ceev thiab lub zog yuav tsum tau extract ib co tonnage ntawm cov khoom ib teev.Qhov tsawg kawg nkaus ceev yog siv los txiav txim qhov ceev, thiab qhov siab tshaj plaws bulk ceev txiav txim siab lub zog (torque) xav tau los ntawm feeder.
Tag nrho hauv tag nrho, nws yog ib qho tseem ceeb uas yuav tsum tau siv qhov tseeb "bulk" ntom es tsis yog "khoom" ntom kom loj koj lub apron feeder.Yog tias cov kev suav no tsis raug, qhov kawg pub tus nqi ntawm cov txheej txheem qis tuaj yeem cuam tshuam.
Kev txiav txim siab lub hopper shear ntev yog ib qho tseem ceeb hauv kev txiav txim siab kom raug thiab xaiv lub apron feeder thiab tsav system (lub cev muaj zog).Tab sis qhov no yuav ua li cas? Qhov hluav taws xob kawg ntawm lub hopper.Nws suab yooj yim, tab sis nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov no yuav tsum tsis txhob tsis meej pem nrog qhov loj ntawm sab saum toj ntawm lub hopper uas tuav cov khoom.
Lub hom phiaj ntawm kev nrhiav qhov hopper shear ntev ntsuas yog los txiav txim siab qhov tseeb shear dav hlau kab ntawm cov khoom thiab qhov twg cov khoom nyob rau hauv lub tiab sib cais (shears) los ntawm cov khoom (L2) nyob rau hauv lub hopper.Qhov shear resistance ntawm cov khoom yog feem ntau kwv yees. yuav tsum nyob nruab nrab ntawm 50-70% ntawm tag nrho cov quab yuam / lub hwj chim.Qhov no shear ntev xam yuav ua rau underpower (tsawg lawm) los yog overpower (nce nyob rau hauv kev khiav hauj lwm cov nqi (opex)).
Cov khoom sib nrug yog qhov tseem ceeb rau txhua yam nroj tsuag.Raws li tau hais ua ntej, lub apron feeder tuaj yeem ntsia tau rau ntawm qhov chaw kom txuag tau qhov chaw.Xaiv qhov ntev ntawm apron feeder tuaj yeem tsis tsuas yog txo cov peev nyiaj siv (capex), tab sis kuj txo cov nqi siv hluav taws xob thiab kev ua haujlwm.
Tab sis qhov ntev npaum li cas yog txiav txim siab li cas?Qhov ntev ntev ntawm lub apron feeder yog qhov uas tuaj yeem ua tau raws li qhov yuav tsum tau ua hauv qhov luv tshaj plaws tau ntev.Txawm li cas los xij, qee zaum, rau kev ua haujlwm, kev xaiv ntawm feeder yuav siv sij hawm ntev dua rau "hloov" cov khoom siv rau cov khoom siv qis qis thiab tshem tawm cov ntsiab lus hloov pauv (thiab cov nqi tsis tsim nyog).
Txhawm rau txiav txim siab qhov luv tshaj plaws thiab qhov ua tau zoo tshaj plaws, lub apron feeder yuav tsum tau muab tso rau hauv lub hopper (L2). qhov tso tawm kawg thaum lub feeder tsis ua haujlwm.
Xaiv txoj kev tsav tsheb rau koj lub apron feeder yuav nyob ntawm qhov kev ua haujlwm thiab lub hom phiaj ntawm lub feeder.Apron Feeders yog tsim los ua haujlwm ntawm qhov sib txawv ntawm qhov ceev kom rho tawm los ntawm kev khaws cia thiab pub rau hauv qab ntawm tus nqi tswj kom ua tau zoo tshaj plaws. Cov khoom siv yuav txawv vim muaj ntau yam. xws li lub caij ntawm lub xyoo, ore lub cev los yog blasting thiab sib tov qauv.
Ob hom kev tsav uas tsim nyog rau qhov sib txawv ntawm qhov ceev yog cov tshuab tsav uas siv cov iav reducers, lub cev muaj zog zaus thiab qhov sib txawv zaus tsav (VFDs), los yog hydraulic motors thiab lub zog hluav taws xob nrog cov twj tso kua mis hloov pauv.Hnub no, qhov sib txawv ntawm qhov sib txawv ntawm cov tshuab tsav tau ua pov thawj tias yog lub tshuab tsav. ntawm kev xaiv vim kev nce qib ntawm kev siv technology thiab peev kev siv nyiaj zoo.
Hydraulic tsav tshuab muaj lawv qhov chaw, tab sis tsis suav tias yog qhov zoo tagnrho ntawm ob lub zog sib txawv.
Post lub sij hawm: Lub Xya hli ntuj-14-2022
