For one large scale blast furnace production rate of melted slag at about 1500 is 100 150thour Solidified by natural cooling in atmosphere or rapid cooling by water Heat recovery has not yet been done Potential of melted slag as heat source Melted ID: 6136
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1 Heat recovery from melted blast furnace slag using fluidized bedTakayuki Takahashi, Kenji HorinouchiNiigata University, Japan 3 heat of about 400 500 cal/g. 5 Meltedslag droplets Slag Slag (solid) Gas Use as material No direct contact between liquid slag and boiler tube.Heat of phase change is recovered through boiler tubes. Removal of solidified slag 7 of 100t/hand 52% 02000400060008000H [kcal/s]T [oC] Heat source Steam 10 Wax feeder 1-hexadecanol(m.p.49, density 800kg/m)Feed rate: 0.04g/sdroplet was about 5mm. Heat transfer media (water)HeaterCapillaryValve syste m Valve syste m Valve open/closecontrolWax reservoi r 11 Feedof BM (light Wax dropletsFluidizing airScrewtransporterMotorFluidized bedFluidizing airBed materialfeedH=0cmPressuretransducers 13 Removal of BM with wax:Continuous withdrawalIntermittent withdrawalBottom part worked as a classifier when operated under intermittent mode.Excess accumulation in the bottom Detection of solid accumulation in the bottom S�pectrum peak of 2~3Hz at height 8.5cm ãªãªãªãªãªãªãªà¹áµá¢ãª²ãªã«ãª´ä´ääªää¦ääªä· ãªãª ãªãªºã« ãªãª ãªãªºã« ãªãªãª ãªãªºã« Without acclumuation 17 ãªãªãªãªãªãªãªà¹áµá¢ãª²ãªã«ãª´ä´ääªää¦ääªä· ãªãª ãªãªºã« ãªãª ãªãªºã« ãªãªãª ãªãªºã« Peak disappeared with the formation of channeling P Accumulation of 100g 19 tonnesof coal annually.