Izitini ze-Mullite kanye nezitini ze-Sillimanite
Izitini eziningiiyisitini esiphikisayo se-alumina ephezulu esisebenza kahle kakhulu esine-mullite (3Al₂O₃·2SiO₂) njengesigaba esiyinhloko sekristalu, okuwukuphela kwezinto eziqinile zesigaba sekristalu esiphezulu esisezingeni eliphezulu ohlelweni lwe-Al₂O₃-SiO₂. Ibonisa ukuqina okuqinile kakhulu kwezinga lokushisa eliphezulu (akukho ukuguquguquka okungaphezu kuka-1600℃ kokusetshenziswa isikhathi eside, ukukhukhuleka okuphansi kakhulu), ukusebenza okuhle kakhulu kokushaqeka kokushisa (ukwanda okuphansi kokushisa, ukulwa nokuqhekeka/ukuqhekeka), ukumelana nokugqwala okuvelele (okumelana nokukhuhla kwe-slag okune-acidic/neutral kanye nokugqwala okuncibilikayo, okuncane kakhuluukungcola), amandla okucindezela aphezulu okushisa kwegumbi kanye nokuvuleka okubonakalayo okumaphakathi, okunemininingwane ephelele kanye nokwenza ngokwezifiso okuguquguqukayo, okusebenza kabanzi ezimbonini ezahlukahlukene zokushisa okuphezulu, okwenza kube yinto ekhethwayo yokungaguquki kolwelwesi oluyinhloko lwama-oven ahlukahlukene okushisa okuphezulu.
Ukuhlukaniswa Komkhiqizo:
1. Isitini Esihlanganisiwe Se-Mullite:Kwenziwe nge-bauxite ne-silica (1600-1700℃ sintering), i-Al₂O₃ 65%-72%. Isebenza kahle, ivuthiwe, ifanele izimo ezivamile zokushisa okuphakathi nendawo; itholakala ngezitini ezijwayelekile/ezinomumo okhethekile, ezisetshenziswa kabanzi ezintweni zokwakha kanye nasezitsheni zensimbi.
2. Isitini Esihlanganisiwe Se-Mullite:Ihlanganiswe ngogesi (ngaphezu kuka-1900℃), ikristalu eqinile, isakhiwo esiminyene. I-Al₂O₃ 70%-75%, ukumelana okuphezulu kokushaqeka/ukugqwala kokushisa, ukukhukhuleka okuphansi kakhulu. Ifanele izimo zokushisa okuphezulu (ngaphezu kuka-1650℃) (izithando zokuncibilikisa ingilazi, insimbi ephezulu).
3. Izitini ze-Zircon Mullite:Isithasiselo se-Mullite + zircon (ZrSiO₄) (1650-1720℃ sintering). I-Al₂O₃ 68%-75%, i-ZrO₂ 8%-15%, ukumelana nokuguguleka okuqinile. Isetshenziswa ezingxenyeni zesithando sokuncibilikisa ingilazi kanye nezithando zokuncibilikisa ezingenayo i-ferrous eziguguleka kakhulu.
4. Isitini Esihlanzekile Kakhulu Esine-Mullite:I-alumina/i-silica emsulwa kakhulu, i-Fe₂O₃≤0.2%, i-Al₂O₃ 72%-78%, ukumelana nokushisa okungaphezu kuka-1850℃. Ayinawo ukungcola, ukuqina okuhle kakhulu kwezinga lokushisa eliphezulu, ezimweni ezihlanzekile kakhulu (i-metallurgy enembile, ama-oven e-ceramic kagesi).
5. Izingxenye Ezilungisiwe Zama-Mullite:Kwenziwe ngokwezifiso ngobukhulu/isimo sesitofu, akukho ukusika endaweni, ukusebenza kahle kakhulu kokwakhiwa, ukuvala okuhle. Kufanelekela izingxenye zesitofu ezingajwayelekile (izitofu ezishisayo, izitofu eziqhekekayo), kunciphisa ingozi yokuwa kwezitini.
Isitini se-SillimaniteYenziwe nge-sillimanite yemvelo (i-Al₂SiO₅, okuqukethwe kwe-Al₂O₃ okungokwethiyori okungu-62.9%) ngokuhlanganiswa, ukwakheka kanye nokushiswa kwezinga lokushisa eliphezulu. Isici sayo esiyinhloko ukuthi i-sillimanite idlula ekuguqulweni kwesigaba se-mullitization ekushiseni okuphezulu (1300-1500℃), okuhambisana nokwandiswa kwevolumu okumaphakathi (2%-3%), okungaqeda ukuncishiswa kokushiswa kwezinga lokushisa komzimba wezitini, okwenza umzimba wezitini ube mkhulu futhi uvalwe kangcono. Ukuqina kwayo kungu-1770-1830℃, okulungele kakhulu izimo zokusebenza eziphakathi nendawo neziphezulu ezinokushintshashintsha okukhulu kwezinga lokushisa kanye nokugqwala kwamakhemikhali, kanye nokusebenza kahle kwezindleko.
Ukuhlukaniswa Komkhiqizo:
1. Isitini Esijwayelekile Se-Sillimanite:I-sillimanite yemvelo (Al₂O₃ 60%-62%) + i-bauxite/ubumba, ukushaqeka okuvamile. Ukubhoboka okumaphakathi, ukushaqeka okuhle kokushisa, izindleko eziphansi; kokushisa okuphezulu okuvamile, ukushintshashintsha njalo (umphimbo wesithando somlilo, ifenisha yesitofu se-ceramic).
2. Isitini se-Sillimanite Esihlanzekile Kakhulu:I-sillimanite yemvelo emsulwa kakhulu (i-Al₂O₃ 62%-65%), i-Fe₂O₃≤0.3%, i-1580-1650℃ evuthayo. Iqinile, ukumelana okungcono kwe-alkali/ukugqwala; ngenxa yokugqwala okuncane kwamakhemikhali (ama-kiln oil, ama-non-ferrous smelting furnaces).
3. Isitini Esihlanganisiwe se-Sillimanite-Mullite:I-Sillimanite + i-mullite, ukuziqinisa kwe-phase transformation + ukuzinza kwe-high-temperature. I-Al₂O₃ 63%-68%, ilinganisela ukumelana nokushaqeka/ukuhudula kwe-thermal; ngokuguquguquka okukhulu kwe-temperature, ukuthwala umthwalo we-high-temperature (i-blast furnace bottom, i-glass flow channel).
Imikhiqizo yezitini ze-Sillimanite:Isitini sesiteshi, umgodi wokugeleza, ipayipi elijikelezayo, isitsha sokuphakela, indandatho ye-orifice, i-stirving paddle, i-punch, isilinda sokuphakela, isitini se-fire block slag, i-damper block, isitini se-arch, isembozo sesitsha sokuphakela, isitini esingena emgodini, isitini sokushisa, umshanelo, isitini sesembozo nezinye izinhlobo kanye nemininingwane.
Izinzuzo Eziyinhloko:
1. Ukuguquguquka Kwesigaba Sokuziqinisa:Ukwandiswa kwe-mullitization yokushisa okuphezulu kuvimbela ukuncishiswa, okuqinisekisa ukuqina okuphezulu kanye nokuvalwa okuhle.
2. Ukuqina Kokushisa Okulinganiselwe:Ukwanda okuphansi kokushisa, ukumelana okuhle kakhulu nokushaqeka/ukuguguleka kokushisa, okulungele ukushintsha kwezinga lokushisa njalo.
3. Ukusebenza Kahle Kakhulu Ngezindleko:Izinto zokusetshenziswa zemvelo ze-sillimanite, ezibiza kancane kunezitini ze-mullite, zifanele izimo ezibucayi kakhulu.
4. Ukumelana Okuhle Kakhulu Kwe-Slag:Ayimelani nokugqwala kwe-slag/glass liquid kanye nokuguguleka kwezinga lokushisa eliphezulu, akulula ukuyikhipha.
5. Yemvelo futhi inobungani nemvelo:Akukho ukungcola okuyingozi, ukungcola okuncane kwezinto ezibonakalayo, kufanelekile kuma-oven anobungani nemvelo.
| Imikhiqizo | OkuthathuPhansiI-Mullite | I-Mullite Ehlanganisiwe | I-Sillimanite Mullite | KuhlanganisiweI-Mullite | ||||
| Inkomba | I-RBTM-47 | I-RBTM-65 | I-RBTM-70 | I-RBTM-75 | I-RBTA-60 | I-RBTA-65 | I-RBTFM-75 | |
| Ukungavuvukali (℃) ≥ | 1790 | 1790 | 1790 | 1790 | 1790 | 1790 | 1810 | |
| Ubuningi Bobuningi (g/cm3) ≥ | 2.42 | 2.45 | 2.50 | 2.60 | 2.48 | 2.5 | 2.70 | |
| Ukugeleza Okubonakalayo (%) ≤ | 12 | 18 | 18 | 17 | 18 | 18 | 16 | |
| Amandla Okuchoboza Okubandayo (MPa) | 60 | 60 | 70 | 80 | 70 | 70 | 90 | |
| Ushintsho Oluhlala Njalo Oluqondile (%) | 1400°×2h | +0.1 -0.1 | | | | | | |
| 1500°×2h | | +0.1 -0.4 | +0.1 -0.4 | +0.1 -0.4 | +1 -0.2 | ±0.2 | ±0.1 | |
| Refractoriness Under Load@0.2MPa(℃) ≥ | 1520 | 1580 | 1600 | 1600 | 1600 | 1620 | 1700 | |
| Creep Rate@0.2MPa 1200°×2h(%) ≤ | 0.1 | ― | ― | ― | ― | ― | ― | |
| I-Al2O3(%) ≥ | 47 | 64 | 68 | 72 | 60 | 65 | 75 | |
| I-Fe2O3(%) ≤ | 1.2 | 0.8 | 0.8 | 0.7 | 1.0 | 0.8 | 0.5 | |
Izitini Eziningi:
1. Imboni Yensimbi: Isitofu esishisayo, umgodi wesitofu esiqhumayo, ulwelwesi lweladle, isitofu sokuncibilikisa insimbi esingenansimbi;
2. Imboni Yezinto Zokwakha: Indawo yokushisa ephezulu yesithando sobumba, indawo yokuguquka yesithando sobumba esijikelezayo sikasimende, isithando somhubhe esingenakuguqulwa;
3. Imboni Yengilazi: Umshini Wokuvuselela, isiteshi, ukuhlanza kanye nodonga oluseceleni kwechibi lokusebenza lwesithando sokuncibilikisa ingilazi;
4. Imboni Yamakhemikhali: Isithando somlilo esiqhekeka nge-Petrochemical, i-calciner enokushisa okuphezulu, isithando somlilo esithuthayo;
5. Insimu Esezingeni Eliphezulu: Isitofu se-ceramic se-elekthronikhi, isitofu sensimbi esinembile (esifanele uhlobo oluhlanzekile kakhulu).
Izitini ze-Sillimanite:
1. Imboni Yensimbi: Isivikelo sezansi sesithando somlilo, ulwelwesi lomphimbo wesithando, indawo yokuphuma kwensimbi, indawo yokushisa ephakathi nephansi yesitofu somlilo esishisayo;
2. Imboni Yengilazi: Udonga oluseceleni kwechibi lokusebenza, isiteshi sokugeleza, isitini sesiteshi kanye nesitsha sokuhlola i-regenerator sesithando sokuncibilikisa ingilazi;
3. Imboni Yesitsha: Indawo yokushisa isitsha sesitsha sesitsha sesitsha, ifenisha yesitsha sesitsha (i-saggar, ishalofu), ulwelwesi lwesitsha sesitsha semhubhe;
4. Imboni Yamakhemikhali: Ulwelwesi lwesithando sokuncibilikisa insimbi olungenansimbi, isithando sokubhaka esishisa kakhulu, isithando sokubhaka esinosawoti we-sulfuric acid;
5. Ezinye Izinkambu: Ingxenye yokushisa ephezulu ye-incinerator yokushisa imfucuza, ulwelwesi lwe-preheater ye-oven yesimende (olufanele uhlobo olujwayelekile).
imibuzo ejwayelekile ukubuzwa
Udinga usizo? Qiniseka ukuthi uvakashela izinkundla zethu zokusekela ukuze uthole izimpendulo zemibuzo yakho!
Singumkhiqizi wangempela, imboni yethu igxile ekukhiqizeni izinto eziphikisayo iminyaka engaphezu kwengu-30. Sithembisa ukukunikeza intengo engcono kakhulu, insizakalo engcono kakhulu yangaphambi kokuthengisa kanye neyangemva kokuthengisa.
Kuyo yonke inqubo yokukhiqiza, i-RBT inohlelo oluphelele lwe-QC lokwakheka kwamakhemikhali kanye nezakhiwo zomzimba. Futhi sizohlola izimpahla, futhi isitifiketi sekhwalithi sizothunyelwa nezimpahla. Uma unezidingo ezikhethekile, sizozama konke okusemandleni ethu ukuze sizilungiselele.
Kuye ngobuningi, isikhathi sethu sokulethwa sihlukile. Kodwa sithembisa ukuthumela ngokushesha ngangokunokwenzeka ngekhwalithi eqinisekisiwe.
Vele, sinikeza amasampula amahhala.
Yebo, vele, wamukelekile ukuvakashela inkampani ye-RBT kanye nemikhiqizo yethu.
Akukho mkhawulo, singakunikeza isiphakamiso nesixazululo esingcono kakhulu ngokuya ngesimo sakho.
Sesineminyaka engaphezu kwengu-30 senza izinto eziphikisayo, sinokusekelwa okuqinile kwezobuchwepheshe kanye nokuhlangenwe nakho okucebile, singasiza amakhasimende ukuklama ama-kiln ahlukene futhi anikeze isevisi eyodwa.
