Babban aikin bulo na magnesia

a. Refractoriness

Domin narkewa batu na periclase (MgO) lu’ulu’u ne sosai high, kai 2800 ℃, da refractoriness na magnesia tubalin ne mafi girma a tsakanin general refractory tubalin, yawanci sama da 2000 ℃.

b. Ƙarfin tsarin zafin jiki mai girma

Ƙarfin zafin jiki na tubalin magnesia ba shi da kyau, kuma farkon zafin jiki mai laushi a ƙarƙashin kaya yana tsakanin 1500 da 1550 ° C, wanda ya fi 500 ° C ƙasa da refractoriness.

c. Tsayayyar slag

Tubalin Magnesium kayan aikin alkaline ne kuma suna da juriya mai ƙarfi ga slag alkaline kamar CaO da FeO. Sabili da haka, yawanci ana amfani da su azaman kayan gini don murhun wuta na alkaline, amma juriya ga slag acid ba shi da kyau sosai. Tubalin Magnesium ba za su iya haɗuwa da kayan da ke hana acidic ba, za su yi hulɗa da juna ta hanyar sinadarai kuma za su lalace sama da 1500 ° C. Saboda haka, tubalin magnesia ba za a iya haɗuwa da tubalin silica ba.

d. Zaman lafiyar thermal

Tsawon yanayin zafi na tubalin magnesia ba shi da kyau, kuma yana iya jure wa sanyaya ruwa sau 2 zuwa 8, wanda shine babban hasara.

e. Kwanciyar hankali

The thermal fadada coefficient na magnesia bulo ne babba, mikakke fadada coefficient tsakanin 20 ~ 1500 ℃ ne 14.3 × 106, don haka isa fadada gidajen abinci ya kamata a bar a lokacin bricklaying tsari.

f. Ƙarfafawar thermal

Matsakaicin zafin jiki na tubalin magnesia sau da yawa fiye da tubalin yumbu. Don haka, saman tanderun da tubalin magnesia ya gina ya kamata gabaɗaya ya kasance yana da isasshiyar murfin zafi don rage asarar zafi. Koyaya, haɓakar thermal conductivity na tubalin magnesia yana raguwa tare da ƙara yawan zafin jiki.

g. Ruwan ruwa

Rashin isassun sinadarin magnesium oxide yana amsawa da ruwa don samar da amsa mai zuwa: MgO+H2O→Mg(OH)2

Ana kiran wannan amsawar hydration. Sakamakon wannan halayen, ƙarar ya faɗaɗa zuwa 77.7%, yana haifar da mummunar lalacewa ga tubalin magnesia, yana haifar da tsagewa ko ƙazamar ruwa. Dole ne a kiyaye tubalin magnesia daga danshi yayin ajiya.