4. Owing to The large raise of Ti02.Fe203 information in glass period, so the amount of glass phase improves as well as viscosity decreases. This can be the critical cause of the improvement of impact on refractoriness below load and high temperature creep properties is not really clear. Producer Status: https://cruzheavp.hyperionwiki.com/2000243/the_ultimate_guide_to_alumina_bubble_brick