Babban bulo na alumina ana samar da shi tare da zaɓin bauxite chamotte azaman babban albarkatun ƙasa, wanda aka kora a 1450-1470 ° C ta hanyar ci gaba tare da ingantaccen kulawa mai inganci. Babban tubalin wuta na Alumina ana kera su tare da alumina ko wasu albarkatun ƙasa masu ɗauke da babban abun ciki na alumina ta hanyar gyare-gyare da harbe-harbe. saboda tsaka-tsakin kayan sawa na alumina na iya tsayayya da juriya na lalatawar acid slag.
Samu ta hanyar Zaɓi da sieve chamotte don deironing kafin karye, wanda zai iya haɓaka ingancin tubalin alumina. Domin akwai mafi girma rabo na grog a cikin sinadaran da zai iya kai 90 ~ 95%. Zaɓi da kuma bincika deironing kafin grog ya murkushe.
Dangane da abun ciki na Al2O3 daban-daban, ana iya rarraba manyan tubalin alumina zuwa maki uku a China.
Tubalin Alumina na Grade I suna da abun ciki fiye da 75% Al2O3.
Tubalin Alumina High Grade II suna da abun ciki na 60 ~ 75% Al2O3.
Tubalin Alumina High Grade III suna da abun ciki na 48 ~ 60% Al2O3.
Babban bulo na alumina yana da manyan siffofi kamar aikin zafin jiki mai girma, babban lalata da juriya, girman girma, ƙarancin ƙarfe, da sauransu.
Abubuwa | Bulo na alumina mai daraja na farko | Bulo alumina mai daraja na biyu | Bulo na alumina mai daraja na uku | Bulo na alumina na musamman |
LZ-75 | LZ-65 | LZ-55 | LZ-80 | |
Al2O3% ≥ | 75 | 65 | 55 | 82 |
Fe2O3% ≤ | 2.5 | 2.5 | 2.6 | 2.0 |
Girman girma g/cm3 | 2.5 | 2.4 | 2.3 | 2.6 |
Ƙarfin Crushing Cold MPa ≥ | 70 | 60 | 50 | 80 |
0.2MPa Refractoriness Under Load ℃ | 1510 | 1460 | 1420 | 1550 |
Refractoriness ≥ | 1790 | 1770 | 1770 | 1790 |
Bayyanar Porosity% ≤ | 22 | 23 | 24 | 21 |
Maimaita Canjin Lantarki 1450℃×2h % | -0.3 | -0.4 | -0.4 | -0.2 |
Ana iya amfani da bulo mai tsayi a cikin tanderun fashewa, murhu mai zafi, tanderun lantarki. Har ila yau, manyan tubalin wuta na alumina da ake amfani da su a fagen ƙarfe da ƙarfe, nonferrous, gilashin, siminti, yumbu, petrochemical, inji, tukunyar jirgi, masana'antar haske, wutar lantarki, da masana'antar soja da dai sauransu.