What Is The Difference Between Magnesia Iron Spinel Brick And Magnesia Aluminum Brick?
Magnesia ferric spinel brick is a new generation of chromium-free alkaline refractory material for belt firing in large-scale rotary kiln. It uses high purity spinel as raw material and sintering at high temperature to form chromium-free environmental protection products. The product has the characteristics of high compressive strength, good thermal shock stability, good thermal creep resistance, corrosion resistance and permeability, and high load softening temperature, and also has the characteristics of easier to stick to the kiln skin than the direct combination of magnesium-chrome bricks, which can effectively solve the problem of environmental pollution caused by hexavalent chromium generated in the use of magnesium-chrome bricks for cement kilns.
Magnesia-alumina brick is a kind of alkaline refractory made from magnesia and a small amount of industrial alumina or alumina as raw materials. The thermal stability is better than magnesium brick, and the refractoriness is above 1580℃. Resistant to alkaline slag erosion. It is mainly used for the top of steelmaking open hearth furnace and electric furnace, high temperature tunnel kiln, large cement rotary kiln and non-ferrous metal smelting furnace.
