초록 ▼

An improved process for recycling asphaltic concrete comprises introducing asphaltic concrete particles at one end of an elongated rotating drum while supplying flame and hot gases of combustion to the drum at the opposite end, and introducing virgin aggregate into the drum intermediate the two ends

An improved process for recycling asphaltic concrete comprises introducing asphaltic concrete particles at one end of an elongated rotating drum while supplying flame and hot gases of combustion to the drum at the opposite end, and introducing virgin aggregate into the drum intermediate the two ends. The asphaltic concrete is heated as it travels along a portion of the length of the drum and is recovered just prior to reaching the position along the drum length at which the aggregate is introduced. The aggregate is heated as it travels toward the end of the drum at which the flame and hot gases are introduced. Heated aggregate may be returned to the drum for further heating, and may be directed to the opposite drum end and mixed with the asphaltic concrete in a section of the drum.

대표청구항 ▼

A process for treating asphaltic concrete and aggregate comprising introducing hot gases of combustion in a first end of an elongated rotating drum, introducing non-asphalt containing virgin aggregate in a first section of said rotating drum intermediate said first end and a second opposite end of s

A process for treating asphaltic concrete and aggregate comprising introducing hot gases of combustion in a first end of an elongated rotating drum, introducing non-asphalt containing virgin aggregate in a first section of said rotating drum intermediate said first end and a second opposite end of said drum, introducing used asphaltic concrete composition particles in a second section of said rotating drum at or adjacent said second end of said drum, gradually heating and advancing said asphaltic concrete along said second section of said drum toward said first end and recovering at least a portion thereof before said asphaltic concrete reaches said first section of said drum, and gradually heating and advancing said aggregate along said first section of said drum toward said first end and recovering said aggregate from said drum at or adjacent said first end.