What is the difference between clay bricks and three-level high alumina bricks?

Tofauti kuu kati ya matofali ya udongo na matofali yenye alumina ya juu ni yaliyomo kwenye alumini na wiani wa wingi.

Matofali yenye yaliyomo ya 40-48% ya alumini ni matofali ya udongo. Matofali ya udongo yana viashiria tofauti vya N-1, N-2, N-3, na N-4 katika kiwango cha kitaifa. Katika uzalishaji na matumizi, matofali ya udongo ya N-2, N- 3 hutumiwa sana, na pia ni bidhaa za kawaida zinazozalishwa na wazalishaji wengi. Uzito wiani ni kati ya 2.1-2.15. Kwa upande wa matofali ya udongo ya N-1, viashiria vingine ni vya juu kuliko matofali ya alumina ya daraja la tatu.

Bricks with 55% aluminum content are third-grade high-alumina bricks with a bulk density between 2.15-2.25. At present, due to the production area and raw materials, the aluminum content of clay bricks is about 56%. The aluminum content of the clay bricks in Xinmi, Henan is about 56%, and the body density is above 2.15, which is basically a third-grade high-alumina brick. Moreover, the firing temperature is high, and the chemical index is not lower than the third-grade high alumina brick, but there is a difference in the softening temperature of the load.

The aluminum content of the three-level high alumina bricks currently produced is about 63%, and some have 65%. The body density is above 2.25, and the load softening temperature is slightly lower. In terms of chemical indicators, it is only different from the second grade high alumina bricks in unit weight and load softening temperature.

Rangi ya kuonekana kwa matofali ya udongo na matofali ya daraja la tatu ya kiwango cha juu bado ni tofauti. Matofali ya udongo ni nyekundu-manjano, na matofali ya daraja la tatu yenye alumina nyeupe na manjano.

Kuna tofauti ya uzani kati ya matofali ya udongo na matofali ya daraja la tatu ya juu ya alumina. Matofali sawa ya matofali ya udongo ni mepesi kuliko matofali ya daraja la tatu ya juu ya alumina. Joto la kurusha pia ni la chini kwa 20-30 ° C.

Matofali ya udongo na daraja la tatu matofali ya juu ya alumina yana tofauti katika nguvu ya kubana na joto la kulainisha mzigo. Nguvu ya kukandamiza ya matofali ya udongo ni 40Mpa, wakati nguvu ya kukandamiza ya daraja la tatu la matofali ya juu ya alumina ni 50Mpa. Mzigo laini wa matofali ya udongo pia uko juu kuliko ule wa daraja la tatu. Refractoriness ya matofali ya aluminium ni 30-40 ℃, na kinzani yake iko karibu 30 ℃ chini.