procurement of pourable insulation, castable refractory, fire crete p and plastic refractory for boiler for unit no. 1 and 2 at 2x600mw at sstpp, mppgcl, dongalia , pourable insulation :- specification: service temp.- 650°c, permanent linear change at 650 °c= + / - 2.0% , compressive strength- in kg / cm2 [ at 110 °c- 22 min., at 500 °c- 14 min. ] , bulk densityat 110 °c ( kg / m3 ) = 660 max., bulk densityat 500 °c ( kg / m3 ) = 640 max., thermal conductivity ( k ) [ at mean temp.-: 250 °c in kcal / m hr°c= 0.16 ( max. ) , 500 °c in kcal / m hr°c ] , chemical composition : fe2o3 ( ferite oxide ) : 5.0 ( max. ) , castable refractories why theate grade a , castable refractories fire crete p , plastic refratory ( 90.0% alumina ) with liquid binder :- [ service temperature - 1650 °c max., refractoriness- 1785 °c, bulk density ( sample dried at 110 °c for 24 hrs. ) , cold crushing strength [ at 110 °c / 24 hrs. - 650.0 kg / cm2, at 1300°c / 5 hrs.-875.0 kg / cm2 ] , permanent linear change [ at 1300 °c / 5 hrs.-0.60 % max. ] , chemical analysis [ al2o3 ( nominal ) - 90.0%, fe2o3 ( max ) - 0.3% ] , abrasion loss pre-fired [ at 110 °c / 24 hrs.- 5.0 cc, at 1300 °c / 5 hrs.- 3.5 cc ] , binder requirement - 9.5 to 10.0% of wt, thermal conductivity [ at 1000 °c - 2.0 to 2.2 kcal / m / hr / °c ] , method of application- ramming / hand