Ubuhlalu obuntantayo wuhlobo lwebhola elingenalutho lempukane elingantanta phezu kwamanzi.Imhlophe ngokumpunga, izacile futhi iyigobongo odongeni, ilula kakhulu ngesisindo, ineyunithi yesisindo esingu-720kg/m3 (sindayo) kanye no-418.8kg/m3 (ukukhanya), usayizi wezinhlayiyana ezingaba ngu-0.1mm, ivaliwe futhi ibushelelezi ebusweni, incane conductivity ezishisayo, futhi ukumelana umlilo ≥ 1610 ℃.Kuyi-refractory enhle kakhulu yokugcina izinga lokushisa, esetshenziswa kabanzi ekukhiqizeni ama-castable akhanyayo kanye nokumba uwoyela.Ukwakheka kwamakhemikhali kobuhlalu obuntantayo ikakhulukazi i-silicon dioxide ne-aluminium oxide.Inezici eziningi, njengezinhlayiya ezinhle, okungenalutho, isisindo esilula, amandla aphezulu, ukumelana nokugqoka, ukumelana nokushisa okuphezulu, ukufakwa kwe-thermal, ukufakwa kwe-insulation kanye ne-flame retadancy.Ingenye yezinto zokusetshenziswa ezisetshenziswa kakhulu embonini yokumelana nomlilo.

Isingeniso

Ukusebenza okuhle kakhulu nokusebenzisa ubuhlalu obuntantayo

Ukumelana nomlilo okuphezulu.Izingxenye zamakhemikhali eziyinhloko zobuhlalu obuntantayo yi-silicon ne-aluminium oxides, lapho i-silicon dioxide cishe i-48-66% ne-aluminium oxide cishe i-26-36%.Ngenxa yokuthi indawo encibilikayo ye-silicon dioxide ingu-1720 ℃ futhi eye-aluminum oxide ingu-2060 ℃, zombili ziyi-refractories ephezulu.Ngakho-ke, ubuhlalu obuntantayo bunokumelana nomlilo okuphakeme kakhulu, ngokuvamile okufinyelela ku-1620-1800 ℃, okwenza kube ukuphikiswa okuhle kakhulu kokusebenza okuphezulu.Isisindo esincane, ukufakwa kwe-thermal.Udonga lobuhlalu obuntantayo luncane futhi luyizigodi, kanti imbobo iyi-semi vacuum.Kukhona kuphela inani elincane kakhulu legesi (N2, H2, CO2, njll.), futhi ukuqhutshwa kokushisa kuhamba kancane kakhulu.Ngakho-ke, ubuhlalu obuntantayo abugcini nje ukukhanya ngesisindo (250-450 kg/m3).Ubukhulu bezinhlayiyana zemvelo zobuhlalu obuntantayo bungama-microns angu-1-250.Ubuhlalu be-Drift bungasetshenziswa ngokuqondile ngaphandle kokugaya.I-fineness ingahlangabezana nezidingo zemikhiqizo ehlukahlukene.Ezinye izinto zokuvikela ezishisayo ezingasindi zivame ukuba nosayizi omkhulu wezinhlayiyana (njenge-perlite).Uma zigaywe, umthamo uzokwandiswa kakhulu, futhi ukufakwa kwe-thermal kuzoncishiswa kakhulu.Kulokhu, ubuhlalu obuDrifting bunezinzuzo.I-insulation kagesi enhle kakhulu.Ubuhlalu obuntantayo ngemva kokukhethwa kobuhlalu obuzibuthe buyinto evikelayo esebenza kahle kakhulu futhi ayiwuhambisi ugesi.Ngokuvamile, ukumelana kwama-insulators kuncipha ngokwanda kwezinga lokushisa, kuyilapho lobuhlalu obuntantayo bukhula ngokunyuka kwezinga lokushisa.Le nzuzo ayinayo ezinye izinto zokuvikela.Ngakho-ke, ingasetshenziswa ukwenza imikhiqizo yokushisa ngaphansi kwezimo eziphakeme zokushisa.