| 摘要 |
<p>A method and an apparatus to foam liquid bitumen discharging off a nozzle (2) by which method into same nozzle also compressed air and water is conveyed. The matter to be foamed is conveyed into the nozzle at a temperature of 120°- 200 °C, water is conveyed to the nozzle at a temperature of at least 120° with the supply pressure to the nozzle or pre-nozzle (12) then at least 60 bar, compressed air is conveyed ring-shaped from the outside of the water nozzle and the matter to be foamed is conveyed to the nozzle as the outmost ring-shaped flow.</p> |
