Alumina npuas cib yog ib hom kev ua haujlwm siab -kev ua haujlwm hnyav refractory cib. Their advantages are: low density, good strength, stability, material saving, and long service life.
Alumina npuas cib ua rau txo qhov hnyav tag nrho ntawm lub qhov cub, txo qis lub hauv paus load ntawm lub cub tawg, tshwj xeeb tshaj yog rau lub qhov cub hauv ob sab phlu nrog load- bearing yuav tsum. Ntxiv mus, nws qhov hnyav kom zoo dua tuaj yeem txo cov cua sov dissipation, uas tuaj yeem txuag tau 15-30% ntawm kev siv roj.
Tam sim no, nyob rau hauv tib lub txheej kub kub ntawm lub khw, yog tias hnyav- cov cib ua haujlwm yog siv los ua cov txheej txheem ua haujlwm, yuav tsum muaj txheej txheej ntxiv ntawm cov cib sib sib zog nqus ua ib txheej rwb thaiv tsev. Yog tias siv alumina npuas cib, tsis tas yuav muaj kev kho cov txheej txheem rwb thaiv tsev. Ntxiv nrog rau kev txuag nyiaj ntawm cov ntaub ntawv refractory hauv ob sab phlu, nws tseem tuaj yeem txuag tau 80% ntawm cov khoom siv hluav taws xob rwb thaiv tsev. Thiab qhov tshwj xeeb particle qib ntawm alumina hollow npas tuaj yeem tiv taus qee yam loads thiab raug rau airflow yaig.
Alumina npuas cib yog ib yam khoom siv hluav taws xob sib sib zog nqus uas muaj qhov zoo heev -kub tsis kam thiab lub zog- txuag zog. Lawv tsim nyog siv nyob rau hauv ntau qhov chaw ntawm lub qhov cub hauv ob sab phlu, tshwj xeeb tshaj yog nyob rau hauv siab -kub kilns khiav hauj lwm ntawm 1800℃. Cov pob hollow tseem tuaj yeem ua rau siab - cov khoom siv kub kub, thermal rwb thaiv tsev muab tub lim, thiab tuaj yeem raug hluav taws xob ncaj qha thaum siv. Tam sim no, lub ntim ntim ntawm hnyav refractory cib siv nyob rau hauv siab - cov ntaub ntawv kub yog 2.6-3.0g/cm, thaum lub ntiajteb txawj nqus ntawm alumina hollow pob cib tsuas yog 1.1-1.5g/cm². Rau tib lub ntim, siv alumina hollow pob cib tuaj yeem txo qhov hnyav los ntawm 1.1-1.9 tons, uas tuaj yeem ua kom zoo rau cov qauv ntawm lub cub tawg thiab txo qhov hnyav ntawm lub cub tawg.
Tus nqi tseem ceeb ntawm Alumina npuas cib yog ua kom zoo sib xws ntawm qhov zoo ntawm siab -kub tsis kam, lub teeb yuag, thiab kev rwb thaiv tsev zoo. Nws yog qhov tsim nyog rau kev txuag hluav taws xob thiab kev txo qis hauv siab - qhov kub ntawm cov khoom siv hluav taws xob, kev txhim kho lub teeb, thiab tuaj yeem txhim kho qhov sib xws thiab kev ruaj ntseg ntawm lub qhov cub hauv ob sab phlu.