Ukuze uqonde indlela yokubala yokuminyana kwe-refractory castable, yini imbobo yomoya?
1. Kunezinhlobo ezintathu zezimbotshana:
1. Olunye uhlangothi luvaliwe kanti olunye luxhunywe ngaphandle, olubizwa ngokuthi i-open pore.
2. Imbotshana evaliwe ivaliwe kusampula futhi ayixhunywanga nomhlaba wangaphandle.
3. Izimbobo ezidlulayo zibizwa ngezimbobo.
Ingqikithi ye-porosity, okungukuthi i-porosity yangempela, ibhekisela kumaphesenti yenani levolumu yezimbotshana kumthamo ophelele wesampula;Ngokuvamile, imbobo yokudlula ihlanganiswa nembobo evulekile, futhi imbobo evaliwe incane futhi kunzima ukuyikala ngokuqondile.Ngakho-ke, i-porosity iboniswa yi-porosity evulekile, okungukuthi, i-porosity ebonakalayo.I-porosity ebonakalayo ibhekisela kumaphesenti yenani levolumu yezimbotshana ezivulekile kusampula kuvolumu ephelele yesampula.
Ukuminyana kwenqwaba kubhekisela esilinganisweni sevolumu ephonswayo yesampula eyomisiwe kuvolumu yayo yonke, okungukuthi, isilinganiso sevolumu ephonswayo yomzimba onamambotshana kuvolumu yawo ephelele, evezwe ku-Kg/m3 noma g/cm3.I-porosity ebonakalayo kanye nokuminyana kwenqwaba kungenye yezisekelo zokulawula inani le-refractory castable ekwakheni.Izinkomba zokusebenza ezimbili zingalinganiswa ngesampula efanayo.Okulandelayo ukuminyana kwenqwaba kanye ne-porosity esobala yama-castable aphikisayo asetshenziswa kakhulu.
2. Okulandelayo ukuminyana kwenqwaba kanye ne-porosity ebonakalayo yama-castable aphikisayo asetshenziswa kakhulu.
I-CA-50 kasimende ephezulu ye-alumina ekwazi ukuphonswa, 2.3-2.6g/cm3, 17-20
CA-50 usimende sobumba castable, 2.2-2.35g/cm3, 18-22
Ubumba oluboshwe nge-alumina ephezulu olukhahlelayo, 2.25-2.45g/cm3, 16-21
I-aluminium ephezulu enosimende ekhahlelayo, 2.4-2.7g/cm3, 10-16
I-alumina ephezulu esezingeni eliphansi kakhulu enosimende, i-2.3-2.6g/cm3, 10-16
I-CA-70 usimende corundum castable, 2.7-3.0g/cm3, 12-16
Ingilazi yamanzi yobumba obunjiwe, 2.10-2.35g/cm3, 15-19
I-aluminium ephezulu ye-phosphate castable, 2.3-2.7g/cm3, 17-20
I-aluminium phosphate high aluminium castable, 2.3-2.6g/cm3, 16-20
3. Ukuminyana kokusakazwa kukasimende okuphansi kwethulwa kafushane ngezansi
Okusansimbi okuphonswe kusimende okuphansi kuthatha usimende we-calcium aluminate njengesibophezelo, futhi okuphonswayo okunokuqukethwe kwe-CaO okungaphansi kuka-2.5% ngokuvamile kubizwa ngokuthi ama-castable usimende aphansi.Ngokungafani nama-castables endabuko, izinsimbi eziphansi zikasimende zilungiswa ngokushintsha iningi noma wonke usimende we-alumina ephakeme nge-powder ecwebezelayo (usayizi wezinhlayiyana ezingaphansi kwama-microns ayi-10) nge-agglomeration bonding enokwakheka kwamakhemikhali okufanayo noma okufanayo kwento eyinhloko, okwandisa usayizi wezinhlayiya. ukusatshalaliswa, impushana encane, ukuma kwezinhlayiyana nezinye izici, kanye nokwengeza inani elincane le-dispersant (isinciphisi samanzi), inani elilinganiselwe le-retarder nezinye izithasiselo eziyinhlanganisela.
Ukuminyana kobumba obuncane obukwazi ukubunjwa usimende obungalahleki bungu-2.26g/cm ³ cishe.
Ukuminyana kwe-alumina ephezulu ekwazi ukuphonswa usimende esikwaziyo ukuphonswa ngu-2.3~2.6g/cm ³ cishe.
I-Corundum low Cement refractory ekwazi ukuphonswa ngobuningi obungu-2.65~2.9g/cm ³ cishe.
Isikhathi sokuthumela: Oct-24-2022