| 摘要 |
<p>A method and a device are described for the recovery of bitumen from road surfacing (asphalt) breakup (1) or for separating oil sand into oil and sand, or stone, wherein the bitumen-containing breakup (1) or the oil sand is introduced into a salt melt (2), wherein bitumen (5) or oil floats on the salt melt (2) and after passage through the salt melt (2) is skimmed off from the salt melt (2), and wherein the stone material (3) or the sand/stone in the salt melt (2) sinks and is carried away. The proposed method is characterised in that the temperature of the salt melt (2) lies in the range from 200°C to 350°C and the average dwell time of the breakup (1) in the salt melt (2) lies in the region of at least 5 minutes.</p> |
