| 摘要 |
<p>A process for preparing a homogeneous asphalt product which is a two-member composition of distillation tower bottoms and ground tire rubber homogenized therein includes, in one embodiment, introducing distillation tower bottoms at a temperature of about 425 degree -470 degree F to a vessel through which air is flowing at about 6-15 psi pressure, introducing ground tire rubber to the vessel and bombarding the distillation tower bottoms and ground tire rubber with the air until the mixture is completely and stably homogenized, and recovering the homogenized asphalt composition. In another embodiment, the ground tire rubber is mixed directly with the distillation tower bottoms to form a wetted mixture which is bombarded with air at a temperature of about 350 degree -485 degree F at about 6-15 psi pressure until the mixture is completely and stably homogenized. The homogenized asphalt composition is then recovered.</p> |
