1. Kev cuam tshuam ntawm qhov tsim nyog particle grading ntawm kev tsim thiab blanking
Ua ntej, thaum cov khoom nyob rau hauv cov av nkos tau piled thaum lub sij hawm tsim thiab blanking ntawm cov khoom zoo li tus, ib tug npaum li cas ntawm nruab nrab hais feem ntau yog ntxiv rau cov loj hais kom sau qhov khoob ntawm cov khoom loj. Thaum kawg, cov hmoov zoo sau cov seem seem ntawm cov khoom loj thiab nruab nrab. Qhov sib txawv ntawm cov deposits tuaj yeem txo qis ntxiv, yog li ua tiav qhov sib txuam ntawm cov av nkos. Nyob rau hauv cov txheej txheem ntawm kev sib sau ua ke ntawm cov av nkos, txhua yam ntawm cov khoom siv raw, xws li ntxhib, nruab nrab thiab nplua, feem ntau yog qhov tseem ceeb. Yog hais tias tag nrho cov raw khoom yog coarse hais, qhov sib txawv ntawm cov hais yog loj, lubrefractory bricksTsis sib raug zoo, lub ntsej muag ntsuab lub cev yog qhov tsawg, lub ntsej muag daj yog qhov siab, cov yas yog tsawg thaum lub cev moulding, thiab nws nyuaj rau lub cev ntsuab. Yog tias tag nrho cov khoom zoo, txawm hais tias qhov sib txawv ntawm cov khoom me me thiab kev sib txuas ruaj khov, qhov porosity tsawg, thiab qhov ntom ntom ntawm cov khoom siv raw cov hmoov zoo yuav tsis tshua muaj, uas tsis tuaj yeem ncav cuag qhov ntim qhov xav tau thaum lub sij hawm tsim. thiab blanking. Tsis tas li ntawd, vim qhov tsis muaj cov khoom ntxhib los ua lub luag haujlwm txhawb nqa pob txha, lub zog ntawm lub cev ntsuab tsim tsis siab. Yog hais tias muaj ntau cov khoom sib xyaw ua ke raug txiav txim siab, qhov porosity ntawm cov av nplaum tau txais yuav me dua. Txawm li cas los xij, hauv kev tsim khoom tiag tiag, raws li cov khoom sib xyaw ua ke nce, txoj kab uas hla ntawm txhua qhov sib txuas txuas ntxiv txo qis, nws cov txiaj ntsig tsis muaj zog, thiab nws ua rau muaj kev nyuaj rau cov txheej txheem tsim khoom, thiab ua rau cov khoom siv hluav taws xob ntau ntxiv, yog li ua rau cov txheej txheem ntau lawm. nqi. Yog li ntawd, hauv kev tsim khoom tiag tiag, peb siv peb cov khoom ua kom tau raws li kev tsim khoom.
Yog li dab tsi yog qhov piv ntawm ntxhib, nruab nrab thiab nplua hais nyob rau hauv av nplaum? Raws li theoretical laij lej thiab cov txiaj ntsig kev sim, nws tuaj yeem xaus lus tias cov ntsiab lus feem pua ntawm peb cov khoom siv hauv av nplaum yog 7: 1: 2. Uas yog hais, nyob rau hauv cov txheej txheem ntawm feem ntau cov khoom nyoos ntawm cov ntaub ntawv raw, qhov feem pua ntawm cov coarse thiab cov nplais yog ntau dua qhov feem pua ntawm cov nruab nrab ntawm nruab nrab. Nyob rau hauv txoj kev no, cov av nplaum nrog qhov tsim nyog tshaj plaws electre thiab tuaj yeem ua tiav cov khoom ua tiav zoo dua, qis dua lub cev muaj zog. Hauv kev tsim khoom tiag tiag, yog tias cov khoom siv raw cov ntaub ntawv ntxhib dhau lawm, qee cov hmoov zoo yuav tsum tau ntxiv rau cov av nplaum lossis cov khoom loj yuav tsum raug txo kom tsawg, txwv tsis pub yuav muaj qhov ntxhib saum npoo, qhov pom ntawm cov khoom tsis yog. zoo nkauj heev, thiab yuav muaj ntau qhov qhib pores, uas yuav ua rau kom pom tseeb porosity thiab txo qhov kev ua tau zoo ntawm cov khoom. Yog tias cov khoom siv raw khoom zoo dhau lawm, qee qhov ntawm cov khoom ntxhib yuav tsum tau ntxiv rau cov khoom siv raw lossis cov hmoov zoo ntxiv yuav tsum raug txo, txwv tsis pub cov yas ntawm cov av nkos yuav raug txo thiab cov kab nrib pleb yuav yooj yim tshwm sim thaum molding.
Kev cuam tshuam ntawm qhov tsim nyog particle grading rau ziab ntawm cov khoom tiav
Thaum cov av nkos yuav tau ntim ntau tshaj plaws thaum lub sij hawm molding, nws yog qhov muaj txiaj ntsig zoo tshaj plaws rau cov khoom siv hluav taws xob refractory thiab tuaj yeem ua kom zoo tshaj plaws ntawm cov khoom tiav ntawm ib nrab. Txawm li cas los xij, qhov no yuav ua rau nws nyuaj rau tshem tawm cov dej noo hauv cov av nkos, thiab cov kab nrib pleb qhuav yuav tshwm sim thaum lub ziab kub me ntsis; los yog ib tug loj npaum li cas ntawm noo noo tsis tuaj yeem tawm tag nrho, ua rau tawg thaum pib ntawm kev tua.
Kev cuam tshuam ntawm particle grading ntawm cov txheej txheem tua ntawm cov khoom tiav
Lub coarseness ntawm cov av particle grading kuj muaj qee yam cuam tshuam rau lub shrinkage thaum tua. Lub shrinkage ntawm cov hmoov zoo thaum tua hluav taws yog ntau dua li cov khoom. Yog li ntawd, hauv kev tsim khoom tiag tiag, yog tias cov av nkos zoo dhau lawm, nws yog ib qho yooj yim uas yuav ua rau muaj kev poob qis thaum tua hluav taws, ua rau khib nyiab. Yog hais tias cov av nkos yog ntxhib heev, lub shrinkage yog me me heev, uas yuav ua rau uneven shrinkage.
2. Yuav ua li cas los xyuas kom meej qhov rationality thiab stability ntawm particle grading
Kev muab qhab nia ntawm cov khoom siv av nplaum feem ntau tshwm sim tsis tsim nyog, feem ntau vim tias feem ntau ntawm cov khoom siv raw khoom ua haujlwm tsis nyob hauv qhov chaw, lossis qhov loj me ntawm cov khoom siv raw crushing tsis tau raws li qhov yuav tsum tau ua, los yog cov dej ntws ntawm cov khoom siv crushed hauv. lub silo ua rau particle segregation. Yog li ntawd, nyob rau hauv qhov tseeb ntau lawm, cov ntaub ntawv raw yuav tsum tau crushed ua ntej mus rau qhov yuav tsum tau particle loj, thiab lub khob hliav qab crusher thiab vibrating screen yuav tsum tau ruaj khov los xyuas kom meej stability ntawm raw khoom particle grading. Qhov thib ob, qhov ruaj khov ntawm cov dej ntws ntawm cov khoom siv crushed hauv silo tiv thaiv cov khoom sib cais thiab cuam tshuam rau kev muab qhab nia ntawm cov khoom siv av nplaum.
Qhov tsim nyog av nplaum particle grading yog qhov tseem ceeb rau kev tsim cov alkaline zoo li refractory cib khoom. Mixing clay materials with reasonable particle grading makes semi-finished products easy to shape, and can obtain green bodies with high density and good appearance quality, which can ensure the qualified rate of drying and the rationality of shrinkage during firing, thereby obtaining high-quality alkaline zoo li refractory khoom.
