Hauv cov lag luam uas kev xa cov khoom siv abrasive yog qhov tseeb txhua hnub ua haujlwm, kev ua tsis tiav ntawm cov kav dej ua ntej lub sijhawm tsis yog tsuas yog mob taub hau xwb - nws yog qhov cuam tshuam ncaj qha rau cov kab hauv qab. Peb cov kav dej ceramic alumina uas muaj cov khoom siv siab heev tau tsim los daws qhov teeb meem no. Nrog rau cov ntsiab lus alumina (Al₂O₃) ntau dua 95%, cov kav dej no muaj Rockwell hardness ntawm HRA 85-90, thib ob tsuas yog pob zeb diamond. Qhov nyuaj heev no txhais tau tias muaj kev tiv thaiv zoo rau kev sib txhuam thiab kev cuam tshuam ntawm cov khoom me me, ua rau lub neej ua haujlwm ntev dua 5 txog 10 npaug piv rau cov kav hlau uas tau kho kom zoo. Qhov tseem ceeb, qhov nyuaj tshwj xeeb yog sib phim los ntawm qhov ceev tsawg ntawm kwv yees li 3.6 g / cm³, ua rau lub kaw lus kav dej ceramic sib dua li lwm cov hlau, yog li txo cov khoom siv thiab cov nqi teeb tsa yam tsis muaj kev cuam tshuam rau kev ruaj khov.
Cov txheej txheem tsim khoom siab heev yog qhov tseem ceeb rau kev ua tau zoo ntawm cov yeeb nkab. Txhua lub liner yog tsim los ntawm kev nias isostatic lossis cov txheej txheem extrusion siab, ua raws li kev tua hluav taws hauv lub cub tawg kub siab ntawm 1500 ° C–1700 ° C. Qhov kev tswj hwm sintering no ua rau muaj cov qauv microstructure ntom ntom, homogeneous nrog qhov porosity tsawg kawg nkaus, tshem tawm cov ntsiab lus tsis muaj zog uas tuaj yeem ua rau hnav. Cov ceramic liners tom qab ntawd raug khi rau lub plhaub sab nraud hlau siv cov tshuaj epoxy resin tshwj xeeb uas muaj zog siab, tiv taus kub. Cov qauv sib xyaw no siv cov ceramic qhov nyuaj rau kev tiv thaiv kev hnav thiab cov hlau qhov tawv rau kev tiv thaiv kev kho tshuab, ua kom ntseeg tau tias muaj kev ua tau zoo hauv qab cov xwm txheej ntawm kev poob siab thermal thiab kev cuam tshuam zaus siab. Sab hauv ntawm peb cov yeeb nkab ceramic tswj tau qhov tiav du nrog qhov roughness tag nrho (Ra tus nqi) tsawg dua 0.4 μm, ib qho tseem ceeb uas txo qis kev tiv thaiv kev sib txhuam, txhawb kev ntws laminar, thiab txo cov khoom dai, ua rau cov yeeb nkab no tseem ceeb rau pneumatic thiab hydraulic conveyance systems.
Qhov siv tau tiag tiag ntawm peb cov kav dej alumina ceramic siv tau ntau yam xwm txheej uas muaj kev hnav ntau heev. Hauv cov chaw tsim hluav taws xob uas siv thee, lawv yog cov kev xaiv uas ntseeg tau rau cov kab txhaj tshuaj thee (PCI) thiab cov tshuab xa hluav taws xob uas siv cov tshauv ya, ua tau zoo dua li cov hlau basalt thiab cov hlau tawv uas muaj qhov sib txawv ntau. Cov chaw ua haujlwm tsuas thiab cov chaw ua cov khoom siv hauv av vam khom lawv rau kev thauj cov slurries ntom ntom xws li cov hlau ore concentrate, cov tailings tooj liab, thiab cov xuab zeb silica, qhov twg cov kav dej tiv taus kev hnav thiab kev xeb los ntawm cov kua qaub lossis alkaline slurries yog qhov tseem ceeb. Ntxiv mus, hauv kev lag luam cement, hlau, thiab cov tshuaj chiv, cov kav dej no ua kom muaj kev ua haujlwm txuas ntxiv mus rau hauv cov voj voog tseem ceeb uas raug kev cuam tshuam los ntawm cov khoom me me uas muaj qhov ceev ceev. Thaum kawg, kev nqis peev rau hauv peb cov kav dej alumina ceramic yog qhov kev txiav txim siab zoo - hloov kev saib xyuas reactive nrog kev ntseeg siab ua ntej, txo qis lub sijhawm tsis tau npaj tseg, thiab xa cov nqi qis dua ntawm kev muaj tswv cuab thoob plaws tag nrho lub neej ntawm cov cuab tam.
Lub sijhawm tshaj tawm: Lub Xya Hli-14-2026