Method and Apparatus for Producing Asphalt Mix Product Comprised of Recycled Asphalt Product and Virgin Material

摘要

Asphalt mix product is produced for delivery at a desired temperature and is comprised of a mixture of recycled asphalt product and virgin material in a specified, selected proportion of recycled asphalt product to virgin material. Recycled asphalt product is heated in an indirectly heated recycled asphalt product heater to an elevated temperature. Virgin material is heated in a heater to a maximum temperature not exceeding a prescribed temperature above which damage to that heater will occur. The heated recycled asphalt product is mixed with the heated virgin material in the selected proportion of recycled asphalt product to virgin material to prepare the asphalt mix product for delivery at the desired temperature. By virtue of heating the recycled asphalt product and mixing the heated recycled asphalt product with the heated virgin material, the selected proportion of recycled asphalt product to virgin material is not limited by the maximum temperature of the heated virgin material, and asphalt mix product is produced effectively and economically with proportions of recycled asphalt product to virgin material which are considerably higher than heretofore available.

主权项

1. A method for producing asphalt mix product for delivery at a desired temperature, the asphalt mix product being comprised of a mixture of recycled asphalt product and virgin material and having a selected proportion of recycled asphalt product to virgin material, the method comprising:
heating recycled asphalt product in an indirectly heated recycled asphalt product heater to an elevated temperature to prepare heated recycled asphalt product at the elevated temperature; heating virgin material in a virgin material heater to a maximum temperature not exceeding a prescribed temperature above which damage to the virgin material heater will occur, to prepare heated virgin material at the maximum temperature; and mixing the heated recycled asphalt product with the heated virgin material in the selected proportion of recycled asphalt product to virgin material to prepare the asphalt mix product for delivery at the desired temperature, whereby the selected proportion of recycled asphalt product to virgin material is not limited by the maximum temperature of the heated virgin material.