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|국가/구분||United States(US) Patent 등록|
|발명자 / 주소||
|인용정보||피인용 횟수 : 2 인용 특허 : 34|
A counter-flow drum mixer asphalt plant equipped with a secondary feeder for introducing RAP to direct radiant heat of the combustion zone. Heated virgin aggregate and RAP in the combustion zone are delivered through a transition piece to a first stage of the mixing zone where liquid asphalt is combined with the materials and secondary combustion air flows through the first stage to evacuate blue smoke and steam back to the combustion zone. The second stage of the mixing zone is substantially isolated from secondary combustion air flow where dust and min...
Having thus described my invention, I claim: 1. A method for producing asphaltic product from aggregate, RAP, and liquid asphalt, said method comprising the steps of: introducing aggregate material interiorly of a first end of an inclined, horizontal rotating drum to flow generally from said first end to the second end of said drum and to successively pass through drying, combustion and first and second stage mixing zones of said drum; generating a hot gas stream within the combustion zone of said drum to flow through the drying zone of said drum to sai...