Izinqamuleli ezi-3 zokwenza ngcono izinga lokushisa eliphakeme lama-Refractories

Impahla yokushisa ephezulu kubhekisa ebudlelwaneni obuphakathi kokuguquguquka kwento ekhanyelayo nesikhathi ngaphansi kokushisa okuphezulu okungapheli nomthwalo ongaguquki.

Impilo yesevisi yama-kilns okushisa okuphezulu yinde iminyaka eminingana, noma ngaphezulu kweminyaka eyishumi. Ekugcineni, ukulimala okushisa okuphezulu kwama-Refractories akubangelwa amandla, kepha kungumphumela wemiphumela ehlanganisiwe yokushisa okuphezulu, amandla nesikhathi. Isibonelo, izitini ezihlola izitofu ezishisayo zisebenza emazingeni aphezulu okushisa isikhathi eside, ikakhulukazi ngaphansi kwesenzo somthwalo kanye nokushisa okuphezulu, izitini zithamba kancane kancane futhi zikhiqize ukuguqulwa kwepulasitiki, futhi amandla azo ancipha aze aphulwe. Ukunakwa okukhethekile kukhokhwa ekushiseni nasekwakhiweni. Ukwehlukaniswa kwesakhiwo somlilo kanye nokushiswa okunamandla kwepulasitiki kwezinye izitini kuzodala ukubhujiswa kwesakhiwo somlilo.

Ngakho-ke, yenza ngcono ukumelana okukhanyayo kwezinto zokwakha eziphikisayo, funda izinguquko ezakhiweni zezinto ezingaphikisi ngaphansi kwengcindezi yokushisa okuphezulu; hlola ikhwalithi yemikhiqizo; hlola inqubo yokukhiqiza; qagela ushintsho kumthwalo wemikhiqizo ephikisayo kuzinhlelo zokusebenza ezibonakalayo ekwakhiweni komlilo; hlola imikhiqizo Ukusebenza nokunye kunezincazelo ezibaluleke kakhulu.

Ngokuvamile, ukwenza ngcono ukumelana okungangena kwezinto zokuphikisa, ikakhulukazi ngokusebenzisa izindlela ezintathu ezilandelayo:

1. Hlanza izinto zokusetshenziswa: thuthukisa ubumsulwa bezinto zokusetshenziswa noma hlambulula izinto zokusetshenziswa ukunciphisa ukungcola okufana nezinto eziphansi ezincibilikayo nokugeleza okuqinile (okufana neNa2O kuzitini zobumba, i-Al2O3 kuzitini ze-silica, i-SiO2 ne-CaO kwizitini zemagnesia, njll.) Okuqukethwe komkhiqizo, ngaleyo ndlela kunciphise okuqukethwe kwesigaba sengilazi kumkhiqizo (lena yindlela enconyiwe yokwenza ngcono ukusebenza);

2. Qinisa i-matrix: faka okokusebenza kwe- “reverse creep effect”. Isibonelo, usayizi othize wezinhlayiya ze-quartz wethulwa ezingxenyeni zezitini eziphakeme ze-alumina. Lapho izitini eziphakeme ze-alumina zisetshenziswa ekushiseni okuphezulu, ukusabela kokuqala kwe-mullite kuyaqhubeka ukwenzeka ku-quartz SiO2 naku-Al2O3 ezintweni eziphezulu ze-alumina eluhlaza, futhi inqubo yokuphendula ihambisana nezinga elithile levolumu. Ukuvuvukala. Umphumela walokhu kunwetshwa kwevolumu “umphumela oguqukayo we-creep”, ongasusa ukuqina kwe-shrinkage ngesikhathi sokungena kwezinto ezibonakalayo, ngaleyo ndlela kuthuthukise ukumelana okungangena kwezitini eziphakeme ze-alumina.

3. Thuthukisa inqubo: dizayina ngokunengqondo i-particle gradation yempahla ye-batch, yandisa ingcindezi yokubumba yomzimba oluhlaza, ithole umzimba oluhlaza kakhulu, unciphise inani lama-pores kumkhiqizo, futhi wandise izingxenye ezisebenzayo zomkhiqizo ngokumelene nokungena; qamba uhlelo lokudubula olunengqondo (Ithempelesha yokuSintering, isikhathi sokubamba, izinga lokushisa nokupholisa), ukuze ukuphendula okudingekayo komzimba namakhemikhali entweni kwenziwe ngokuphelele, bese kutholakala ukwakheka kwesigaba nesakhiwo esidingekayo.