Alyumosilikatny ogneupor (high-alumina refractories)

High-aluminous ogneupor (high-alumina refractories) - the alyumosilikatny ogneupor containing> 45% _{of Al203}. High-aluminous ogneupor are subdivided on mullitokremnezemisty (μR, 45-62% _{of Al203}), mullitovy (ML, 62-72%) and mullitokorundny (MK, 72-95%). Products μR make on the basis of chamotte of bauxites, clays and bauxites, and also concentrates of high-aluminous aluminosilicates, ML and MK - on the basis of the technical alumina, electrocorundum, low-ferruterous bauxites rich with alumina.

High-aluminous ogneupor are applied to lining of stalerazlivochny, intermediate and chugunovozny ladles, the sliding locks of ladles, the arches of arc furnaces, a leshchada and gornadomenny furnaces, air-heating and heating furnaces, and other thermal units with a working temperature above 1300 °C, and also as glasses for pouring of steel, tubes for thermocouples, etc. Neformovanny products of such type of the ML and MK type apply in the form of stuffed masses to stalerazlivochny ladles, fillers of fire-resistant concrete, mertel, etc.