Daim ntawv lo ntawm ib lub hnab ntawm 1250 meshcalcined kaolinthiab ib lub hnab ntawm 3000 meshcalcined kaolintxawv ntawm ob peb tus lej xwb. Txawm li cas los xij, thaum muab tso rau hauv glaze los yog lub cev formulations, qhov sib txawv yog ntau tshaj li "fineer hmoov, tus nqi siab dua".
Ib lo lus nug uas peb hnov hauv cov khoom siv raw ua haujlwm: Puas yog cov hmoov txhuam zoo ib txwm yaj zoo dua?
Fineness tseem ceeb, tab sis nws tsis yog tag nrho cov lus teb.
Cov hmoov hmoov zoo tuaj yeem ua kom nrawm dua thiab muaj kev sib txuam ntau dua hauv lub cev. Txawm li cas los xij, "cov tshuaj tiv thaiv sai dua" tsis sib npaug "zoo dua meltability", thiab nws tsis lees paub cov mis zoo dua.
Thaum xaiv calcined kaolin, mesh loj ib leeg yuav tsum tsis txhob yog koj tus kheej siv.
Lub ntsiab lus xaus
Fineness yog ib qho tseem ceeb, tab sis nws tsis yog tag nrho cov lus teb.
Rau cov ntaub ntawv raw los ntawm tib ore batch thiab zoo tib yam calcination txheej txheem, sib txawv tsuas yog tom qab milling thiab kev faib tawm: finer particles feem ntau xa cov loj loj cheeb tsam thiab luv luv cov tshuaj tiv thaiv nyob deb ntawm cov nplej.
Thaum siv rau hauv glaze, nrog txaus dispersion thiab lub sij hawm firing kom zoo, finer particles fuller hu nrog fluxes thiab tej zaum yuav txhawb kev tshwm sim sai.
Ib qho kev xav tsis zoo tseem ceeb xav tau kev qhia meej: kev ua kom zoo tsis tuaj yeem hloov pauv cov khoom siv raw mus rau hauv qhov dej.
Calcined kaolin feem ntau muab alumina thiab silica. Nws muaj nuj nqi nyob rau hauv cov mis - seb nws stabilizes lub glaze los yog nce melting nyuaj - yog txiav txim los ntawm tag nrho cov formulation.
Yog li cov lus hais "lub finer, qhov zoo dua melting"yog qhov tsis raug.
Cov lus piav qhia meej dua: Cov hmoov hmoov zoo tuaj yeem ua kom nrawm thiab homogenize cov tshuaj tiv thaiv. Nws qhov kev ua tau zoo yog nyob ntawm qhov sib txuam nrog koj cov qauv, txheej txheem thiab cov khoom siv hluav taws xob.
1. Paub qhov Calcination Status Ua ntej
Ntau yam khoom lag luam muaj npe "calcined kaolin", tab sis lawv lub xeev calcination sib txawv.
Calcination kub, tuav lub sij hawm, raw ore purity, hlau thiab titanium tshem tawm cov qauv txhua yam cuam tshuam nws cov kev ua tau zoo hauv formulations.
Kaolinite raug dehydroxylation thiab kev hloov pauv ntawm cov txheej txheem thaum calcination; sib txawv calcination degrees yields txawv reactivity thiab theem compositions.
Yog li, mesh loj (1250 mesh / 3000 mesh) ib leeg muab cov ntaub ntawv txwv.
Yam tsawg kawg nkaus, txheeb xyuas cov cim tseem ceeb no:
Cov ntsiab lus ruaj khov ntawm alumina thiab silica
Qib ntawm impurities (hlau, titanium)
Whiteness ntsib glaze nto yuav tsum
Kev poob ruaj khov ntawm qhov hluav taws xob (LOI)
D50, D90 particle loj thiab thaj chaw tshwj xeeb
Kev tua hluav taws tiag tiag hauv qab koj lub hom phiaj kub
Mesh loj tsuas yog qhov pib, tsis yog qhov ua tiav ntawm cov khoom siv raw.
2. Qhov zoo tshaj plaws hloov pauv li cas
Finer hmoov tsis hloov cov tshuaj lom neeg ntawm cov ntxhia; nws tsuas yog hloov particle morphology.
Cov me me feem ntau muaj qhov sib cuag loj dua. Thaum tua, lawv tau txais ntau lub sijhawm los tiv tauj, nthuav tawm thiab hnov mob nrog cov khoom siv raw.
Qhov no tau txais txiaj ntsig cov tshuab uas xav tau ultra- du glaze nto thiab txo qis ntawm coarse particle defects.
Txawm li cas los xij, cov hmoov zoo ua rau kev lag luam -offs:
Nws ua kom cov dej rhiab heev thiab tuaj yeem ua rau slurry viscosity. Nws txo sedimentation tus nqi, tsis tau particle agglomeration los yog system imbalance yuav ua rau glaze slurry nyuaj rau tswj.
Fineness yeej tsis ua haujlwm ntawm nws tus kheej. Nws yuav tsum tau soj ntsuam ua ke nrog particle gradation, tshwj xeeb thaj chaw, cov ntsiab lus ntawm cov khoom, deflocculant ntau npaum li cas thiab lub pob milling lub sij hawm, raws li zoo raws li txoj kev glazing.
Cov ntaub ntawv nyoos tsis yog "qib siab dua-" tsuas yog vim lawv zoo dua. Tus nqi yog los ntawm kev sib piv koj cov txheej txheem.
3. Ob lub logic sib txawv: Rau Ceramic Lub Cev VS Glaze
Rau Ceramic Lub Cev
Calcined kaolin yuav luag tsis muaj plasticity, uas distinguishes nws los ntawm raw kaolin. Tom qab calcination, nws tsis tuaj yeem pab txhawb plasticity rau kev sib sau.
Vim li no, ntxiv calcined kaolin nyob rau hauv ib co formulations pab txo kom qhuav shrinkage txaus ntshai.
Txawm li ntawd los, ultra-fine calcined kaolin tsis haum rau txhua lub cev zaub mov txawv. Cov hmoov zoo heev tuaj yeem hloov cov dej xav tau, particle gradation thiab ua tus cwj pwm. Yog tias koj cov mis tsis muaj plasticity, cov hmoov txhuam tsis tuaj yeem kho tsis zoo ntsuab lub zog los yog tsim nyuaj.
Rau Glaze
Rau daim ntawv thov glaze, peb tsom rau millability, ncua kev ruaj ntseg, glazing sib xws, raug rho tawm nto smoothness thiab firing qhov rais dav.
Cov hmoov zoo muaj qhov zoo nkaus xwb yog tias slurry rheology tswj tau thiab tua hluav taws sib tw zoo.
Yog tias koj qhov kev tsim glaze yog qhov rhiab heev, qhov muag tsis pom kev hloov mus rau cov hmoov zoo dua tuaj yeem qhia cov hloov pauv ntxiv es tsis txhob ua kom zoo dua.
Cov teeb meem xws li pinholes, npuas thiab nkag glaze tsis tuaj yeem tsuas yog ntaus nqi rau "cov hmoov zoo heev" lossis "cov tshuaj tiv thaiv ceev". Lawv feem ntau cuam tshuam nrog glaze thickness, lub cev degassing, firing voj voog, yaj viscosity thiab lub cev -glaze compatibility. Kev ntseeg siab tau tso siab rau kev sim tua es tsis yog kev txiav txim ntxov ntxov.
4. Kev yuav khoom: Tsis txhob sib piv tsuas yog Mesh Loj & Ton Nqe
Nws yog ib qho zoo rau cov neeg yuav khoom los sib piv cov nqi los ntawm qib mesh, tab sis qhov no yooj yim ua rau kev txiav txim siab tsis zoo.
Nrog rau qhov zoo tib yam ore qhov chaw, purity thiab calcination txheej txheem, finer hmoov feem ntau yuav tsum tau ntau milling & faib ua hauj lwm thiab generates ntau dua poob, li no siab dua chav tsev nqi.
Txawm li cas los xij, ore keeb kwm, whiteness, hlau / titanium cov ntsiab lus, calcination stability, particle loj tis thiab batch sib xws feem ntau tshaj mesh loj nyob rau hauv cov nqe lus ntawm cov nqi tswv yim.
Tshwj xeeb tshaj yog rau ultra- qib zoo, tsis txhob txais "3000 mesh" raws li qhov tshwj xeeb. Xyuas cov no: D50 tus nqi, kev tswj ntawm coarse tail hais, thaj chaw tshwj xeeb, agglomeration nyiam, ntxiv rau slurry thiab firing stability hauv koj tus kheej.
Cov xwm txheej no txiav txim siab ntev -lub sij hawm siv tau ntawm cov khoom siv raw.
Cov lus kaw
Kev xaiv cov khoom nyoos, ib yam li kev tsim cov qauv, tsis yog hais txog kev ua kom pom tseeb ntawm txhua qhov ntsuas.
Fineness, whiteness, impurity theem, reactivity, nqi thiab txheej txheem adaptability sib cuam tshuam thiab txwv ib leeg nyob rau hauv ceramic system.
Cov kws paub txog kev tsim qauv yuav tsis hloov mus rau cov hmoov zoo dua qhov muag tsis pom tsuas yog vim "nws zoo dua", lossis xav tias tus nqi siab dua qhov zoo dua. Pib los ntawm kev nthuav qhia koj qhov kub thiab txias, ua haujlwm glaze, txheej txheem glazing thiab tiav cov khoom yuav tsum tau ua.
Tshawb xyuas tag nrho cov lus qhia ua ntej, tom qab ntawd siv tau nrog kev sim kuaj.
Tsis muaj universal raw khoom specification muaj. Qib zoo tshaj plaws yog qhov ua tau zoo rau koj daim ntawv thov tshwj xeeb.
