Drift hlaws yog ib hom ya tshauv hollow pob uas tuaj yeem ntab rau saum npoo dej.Nws yog grey dawb nyob rau hauv cov xim, nrog nyias thiab hollow phab ntsa, thiab ib tug heev lub teeb yuag.Chav tsev hnyav yog 720kg / m3 (hnyav), 418.8kg / m3 (lub teeb), thiab particle loj yog li 0.1 hli.Qhov saum npoo yog kaw thiab du, nrog thermal conductivity tsawg thiab hluav taws kub tsis kam ntawm ≥ 1610 ℃.Nws yog qhov zoo tshaj plaws kub khaws cov khoom siv refractory, dav siv hauv kev tsim cov castables thiab roj drilling.Cov tshuaj muaj pes tsawg leeg ntawm cov hlaws ntab yog feem ntau silicon dioxide thiab aluminium oxide.Nws muaj cov yam ntxwv ntawm cov khoom zoo, hollow, lub teeb yuag, siab zog, hnav tsis kam, kub tsis kam, thermal rwb thaiv tsev, rwb thaiv tsev thiab nplaim taws retardancy.Nws yog ib qho ntawm cov khoom siv raw siv dav hauv kev lag luam hluav taws kub.

Drift hlaws yog ib hom ya tshauv hollow pob uas tuaj yeem ntab rau saum npoo dej.Nws yog grey dawb nyob rau hauv cov xim, nrog nyias thiab hollow phab ntsa, thiab ib tug heev lub teeb yuag.Chav tsev hnyav yog 720kg / m3 (hnyav), 418.8kg / m3 (lub teeb), thiab particle loj yog li 0.1 hli.Qhov saum npoo yog kaw thiab du, nrog thermal conductivity tsawg thiab hluav taws kub tsis kam ntawm ≥ 1610 ℃.Nws yog qhov zoo tshaj plaws kub khaws cov khoom siv refractory, dav siv hauv kev tsim cov castables thiab roj drilling.Cov tshuaj muaj pes tsawg leeg ntawm cov hlaws ntab yog feem ntau silicon dioxide thiab aluminium oxide.Nws muaj cov yam ntxwv ntawm cov khoom zoo, hollow, lub teeb yuag, siab zog, hnav tsis kam, kub tsis kam, thermal rwb thaiv tsev, rwb thaiv tsev thiab nplaim taws retardancy.Nws yog ib qho ntawm cov khoom siv raw siv dav hauv kev lag luam hluav taws kub.

Kev ua tau zoo heev thiab siv cov hlaws ntab ntab

Siab hluav taws kub.Cov tshuaj lom neeg tseem ceeb ntawm cov hlaws ntab yog oxides ntawm silicon thiab txhuas, nrog silicon dioxide accounting txog li 50-65% thiab txhuas trioxide accounting txog li 25-35%.Vim hais tias lub melting point ntawm silicon dioxide yog siab li 1725 degrees Celsius, thiab lub melting point ntawm txhuas oxide yog 2050 degrees Celsius, ob qho tib si uas yog siab refractory tshuaj.Yog li ntawd, cov hlaws ntab ntab muaj qhov hluav taws kub tsis tshua muaj siab, feem ntau ncav cuag 1600-1700 degrees Celsius, ua rau lawv zoo heev cov khoom siv refractory.Lub teeb, insulated thiab insulated.Lub phab ntsa ntab ntab yog nyias thiab hollow, nrog lub tshuab nqus tsev ib nrab hauv cov kab noj hniav thiab tsuas yog cov pa roj tsawg heev (N2, H2, CO2, thiab lwm yam), uas ua rau qeeb qeeb thiab qis qis.Yog li cov hlaws ntab tsis yog qhov hnyav xwb (nrog rau qhov hnyav ntawm 250-450 kg / m3), tab sis kuj muaj cov rwb thaiv tsev zoo thiab thermal rwb thaiv tsev (nrog thermal conductivity ntawm 0.08-0.1 ntawm chav tsev kub), uas ua rau lub hauv paus rau lawv. muaj peev xwm zoo nyob rau hauv thaj tsam ntawm cov khoom siv hluav taws xob rwb thaiv tsev.High hardness thiab lub zog.Raws li cov hlaws ntab yog lub iav tawv uas tsim los ntawm silicon aluminium Oxide ntxhia theem (quartz thiab mullite), nws qhov nyuaj tuaj yeem ncav cuag Mohs 6-7, lub zog zoo li qub tuaj yeem ncav cuag 70-140MPa, thiab nws qhov ceev ceev yog 2.10-2.20g / cm3. , uas yog sib npaug ntawm pob zeb.Yog li ntawd, cov hlaws ntab ntab muaj lub zog siab.Feem ntau, lub teeb ntxeem tau los yog hollow cov ntaub ntawv xws li Perlite, boiling pob zeb, diatomite, pumice, nthuav vermiculite, thiab lwm yam yog tsis zoo hardness thiab lub zog.Thermal rwb thaiv tsev cov khoom los yog lub teeb refractory khoom ua los ntawm lawv muaj qhov tsis zoo ntawm lub zog tsis zoo.Lawv qhov tsis muaj zog yog qhov tseeb lub zog ntawm cov hlaws dai, uas ua rau lawv muaj kev sib tw kom zoo dua thiab siv ntau yam.Fine particle loj thiab loj tshwj xeeb nto cheeb tsam.Qhov loj me me ntawm cov hlaws ntab ntab yog li ntawm 1 txog 250 microns.Qhov tshwj xeeb thaj chaw yog 300-360cm2 / g, uas zoo ib yam li cov cement.Yog li ntawd, cov hlaws ntab ntab tsis tas yuav tsum tau sib tsoo thiab tuaj yeem siv ncaj qha.Lub fineness tuaj yeem ua tau raws li qhov xav tau ntawm ntau yam khoom.Lwm cov ntaub ntawv thermal rwb thaiv tsev yog feem ntau ntawm qhov loj me me (xws li Perlite).Yog tias lawv raug grinded, lub peev xwm yuav tau nce ntau heev thiab cov thermal rwb thaiv tsev yuav raug txo kom tsawg.Hauv qhov no, cov hlaws ntab ntab muaj qhov zoo.Hluav taws xob rwb thaiv tsev zoo heev.Cov hlaws ntab tom qab xaiv cov hlaws sib nqus yog cov khoom siv insulating zoo heev uas tsis muaj hluav taws xob.Kev ua haujlwm ntawm cov insulators dav dav txo qis nrog qhov kub thiab txias, thaum tsis kam ntawm cov hlaws ntab nce ntxiv nrog qhov kub thiab txias.Qhov txiaj ntsig no tsis muaj los ntawm lwm cov ntaub ntawv rwb thaiv tsev.Yog li, nws tuaj yeem siv los tsim cov khoom rwb thaiv tsev nyob rau hauv qhov kub thiab txias.