Refractory materials for different parts of electric ARC furnace(1)Posted by adela li on July 12th, 2017 http://www.yilongrefractory.com/ProductServletOne?id1=1&id=1Refractory materials for different parts of electric ARC furnace(1) (1) Refractories for ARC furnace roof The roof of arc furnace commonly use high alumina brick to masonry, Al2O3 content of between 75% to 85%. Compared with silica magnesia carbon brick, the characterized of high alumina brick is high refractoriness, thermal shock resistance, good slag resistance, high compressive strength. Because of its high thermal shock resistance and structural integrity, it is not necessary to produce shaped refractory brick. There ie a rich bauxite resources in China, high alumina brick has become the main refractory material on Arc Furnace roof, its life is 2 to 3 times of silica brick roof . With the development of large-scale ultra-high-power electric furnace, the service life of high-alumina brick is reduced, Leading to the further use of calcined or not burning magnesia brick and refractory brick for sale magnesia-chrome brick and other alkaline brick. (2) Refractories for ARC furnace wall Slag line area and the hot spot of furnace wall is weak link. As the furnace wall life depends mainly on the degree of damage of hot spot, so the parts of lining should be special attention. the 20th century 70 years ago, the masonry of the site commonly used cast magnesium chrome bricks, combined with or re-combination of magnesia- chrome brick, the service life is 100 to 250 furnace times. Into the 80's, in these parts widely used magnesia carbon brick to masonry, showing that in addition to high temperature and slag resistance performance,service life be significantly improved , the high-power electric arc furnace to more than 300 times in China. Article source: Refractory materials for different parts of electric ARC furnace(1) Like it? Share it!More by this author |