Babban tubalin alumina don sabon nau’in murhun lemun tsami

Na biyu babban tubalin alumina wani nau’in abu ne mai ƙyalƙyali, babban ɓangaren wannan tubalin mai rikitarwa shine Al2O3.

Idan abun ciki na Al2O3 ya fi 90%, ana kiransa tubalin corundum. Dangane da albarkatu daban -daban, matsayin ƙasa bai cika daidaituwa ba. Misali, ƙasashen Turai sun saita ƙananan iyakokin abun ciki na Al2O3 don ƙirar manyan alumina a kashi 42%. A kasar Sin, gwargwadon abin da ke cikin Al2O3 a cikin manyan tubalin alumina, galibi ana raba shi zuwa maki uku: Abun ciki na I──Al2O3> 75%; Grade II──Al2O3 abun ciki shine 60 ～ 75%; Grade III──Al2O3 abun ciki shine 48 ～ 60%.

halayyar

a. Refractoriness

Ƙaƙƙarfan babban tubalin alumina ya fi na yumɓu na yumɓu da tubalin siliki, wanda ya kai 1750 ~ 1790 ℃, wanda shine babban abin ƙyama.

b. Load softening zazzabi

Saboda samfuran manyan alumina suna da babban Al2O3, ƙarancin ƙazanta, da ƙarancin gilashin gilashi, zazzabi mai laushi yana da girma fiye da na tubalin yumbu. Koyaya, saboda lu’ulu’u na mullite ba su samar da tsarin cibiyar sadarwa ba, har yanzu zafin zafin da ke ɗaukar nauyi bai kai na tubalin silica ba.

c. Tsayayyar slag

Babban tubalin alumina yana da ƙarin Al2O3, wanda yake kusa da kayan tsaka tsaki na tsaka tsaki, kuma yana iya tsayayya da yaɗuwar acidic slag da alkaline slag. Saboda haɗawa da SiO2, ikon yin tsayayya da slag na alkaline yana da rauni fiye da na slag acidic.

amfani

An fi amfani da shi don rufin murhun murhun wuta, murhun wuta mai zafi, saman murhun wutar lantarki, murhun murɗawa, murhu mai jujjuyawa, da murhun wuta. Bugu da kari, manyan tubalin alumina kuma ana amfani da su sosai a matsayin bude buhunan farfadowa na murhu na bude wuta, matosai don tsarin zubawa, tubalin bututu, da dai sauransu. manyan tubalin alumina inda tubalin yumɓu zai iya cika buƙatun.

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