High alumina self flow castable refractory composition and a process for manufacture of such high alumina self flow castables The high alumina self flow castable refractory composition is obtained of selective mix of Fused alumina 65% to 70% by wt Reactive alumina 15% to 18% by wt Calcined alumina 2% to 5% by wt Micro fused silica 4% to 5% by wt and High alumina cement 1 to 4% by wt.wherein the distribution coefficient of grains is less than 0.24 and grain size is selected such that finer fractions below 325 BSS are less than 25% by wt The self flow character of the castables is achieved by use of selective good quality easily dispersible superfines together with selective additives Also, in the castables the volume of liquid is selected to exceed the pore volume of the basic structure to thereby form a liquid film around the particles to thereby minimise the friction between the particles It is thus possible to achieve self flow high alumina castables at a lower production and application costs having improved thermo mechanical properties and adapted to take its own shape without use of any vibrator and the like. The castable can be applied to produce complicated shapes and for thinner parts which are difficult to penetrate as well as for the repair of the original lining. Self flow castable wheel can be installed in walking beam reheat furnace, ladle and tundish back-up lining, ladle covers, sealing and repairing of reheat furnace roof and various intricate shapes The castable have easier installation capability without compaction by means of vibrator thereby also avoiding extensive human involvement.

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