AN EMBRAER 120 ON INITIAL CLB DECLARED AN EMER AND DIVERTED DUE TO #2 ENG FIRE WARNING AND CATASTROPHIC FAILURE.

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FLT CLRED FOR TKOF RWY 17; CLB TO 5000 FT; 220 DEG HDG. TWR TURNED FLT OVER TO DEP; THEN CLRED TO 8000 FT. WHILE PASSING THROUGH 1500 FT; HEARD A MUFFLED EXPLOSION; NOSE ATTITUDE DECREASED AND A SLIGHT YAW TOWARD THE R ENG. DETERMINED THAT THE #2 (R) ENG HAD FAILED. #2 ENG WAS SUBSEQUENTLY SHUT DOWN. AN EMER WAS IMMEDIATELY DECLARED WHEN ENG FAILED. I ADVISED TWR THAT WE WOULD BE RETURNING. WE MADE A L TURN TO RWY 35. #2 (R) ENG SHOWED SIGNS OF EXTREME HEAT; WHICH WERE ANALYZED AS ENG FIRE EVEN THOUGH THE ENG WAS SECURED. FIRE SHUTDOWN COMPLETED; FIRE WOULD NOT EXTINGUISH. FLT ATTENDANT COMPLETED EMER ITEMS WITHIN THE LIMITED TIME POSSIBLE AND TOLD TO EXPECT EMER EVAC OUT MAIN CABIN DOOR. ACFT WAS LANDED ON RWY 35 AT MCO AND STOPPED OFF RWY ON INTXN H-4 IN FRONT OF WAITING EMER EQUIP. EVAC INITIATED AND COMPLETED WITH NO INJURIES TO PAX OR CREW. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE PRELIMINARY RPT OF THE ENG FAILURE WAS A BROKEN OIL PRESSURE LINE CAUSING BEARING FAILURE WITH RESULTANT CATASTROPHIC #2 ENG FAILURE. THE RPTR SAID ENG EXAMINATION CONFIRMS THE ENG WAS BURNING UNTIL TOUCHDOWN EVEN THOUGH THE FIRE BOTTLES WERE USED. THE RPTR STATED THE FINAL RPT OF THE CAUSE OF THE ENG FAILURE IS ABOUT A MONTH AWAY. THE RPTR SAID THE ENG WAS A PRATT AND WHITNEY PWC PW118A TURBOPROP.