| 摘要 |
The apparatus 10 comprises first and second vessels 14, 28 a heat exchanger 18 and an outlet 16 for exhaust gases. Virgin aggregate is heated in the first vessel 14 and transferred into and mixed with RAP in the second vessel 28 to form a combined aggregate. The second vessel is spaced from the first and an outlet 16 for exhaust gas from the first vessel extends into the heat exchanger. The heat exchanger is configured to reduce the temperature of the exhaust gas from the first vessel. The heat exchanger may be located between the first vessel and a filter. Also claimed is a method of asphalt production comprising: a) heating virgin aggregate to a required temperature in a first vessel to provide heated aggregate and exhaust gas; b) passing exhaust gas through a heat exchanger, the heat exchanger being configured to reduce the temperature of the exhaust gas and c) mixing the heated virgin aggregate with RAP to form a combined aggregate. |
