Patent ID: 6875015
Filing Date: 2005-04-05
Classification: F27B,F27D,Y02P

Abstract:
1. A cement producing system, comprising: a rotary kiln; a riser duct having an upper portion and a lower portion, wherein said lower portion is communicably connected to said rotary kiln to pass process materials therethrough and to said rotary kiln; a down draft calciner having an upper portion and a lower portion, wherein said lower portion is communicably connected to said lower portion of said riser duct; a tertiary duct communicably connected to said upper portion of said down draft calciner and to receive tertiary gas therefrom; a suspension burner operably disposed in said down draft calciner in a manner to permit receipt of combustible waste fuel and suspension of said waste in said down draft calciner, wherein said suspension burner includes a plurality of support fingers each said finger having a waste support surface, wherein said fingers are removably disposed in said down draft calciner in a manner to provide for self cleaning of said support surface upon removal from said down draft calciner.