I roto i te whakaritenga o nga taputapu bitumen whakarereke, he mea tino nui te whakahaere i te pāmahana. Mēnā he iti rawa te pāmahana bitumen, ka mātotoru ake te bitumen, ka iti te wē, he uaua ki te whakaehunga; mena he tiketike rawa te pāmahana bitumen, i tetahi taha, ka pakeke haere te bitumen. I te wa ano, ka nui rawa te pāmahana o te kohao me te putanga o te bitumen kua whakaemihia, ka pa ki te pumau o te emulsifier me te kounga o te bitumen emulsified. Ko te mea me maarama te katoa ko te bitumen tetahi waahanga nui o te bitumen whakaemulsified, ko te tikanga mo te 50%-65% o te katoa o te kounga o te bitumen whakaemulsified.

Ka rehuhia, ka konatunatuahia ranei te bitumen kua whakakoehia, ka whakakorehia te bitumen kua whakakoehia, a, i muri i te mimiti o te wai o roto, ko te mea e toe ana ki te whenua ko te bitumen. No reira, he mea tino nui te whakarite bitumen. I tua atu, me mahara ano te katoa ka hangaia te tipu bitumen whakaemulsified, ka heke te pokey o te bitumen i te pikinga o te pāmahana. Mo ia pikinga o te 12°C, ka tata rua tona pokey hihiko.
I te wa o te whakaputanga, me whakamahana tuatahi te bitumen maara ki te wai i mua i te mahi whakaehunga. I roto i te tikanga ki te urutau ki te kaha emulsification o te micronizer, te pokey hihiri o te maara turanga bitumen te tikanga whakahaere ki te kia e pā ana ki 200 cst. Ko te iti iho o te pāmahana, ka teitei ake te pokey, no reira me whakapai ake te papu bitumen. me te pehanga o te micronizer, kaore e taea te whakaehunga; engari i tetahi atu taha, hei karo i te whakaetonga me te whakaetonga o te nui o te wai i roto i te hua kua oti i te wa o te hanga o te bitumen whakaehunga, ka arahi ki te whakaheke, he uaua hoki ki te whakamahana i te bitumen maara maara teitei rawa, te Ka whakamahia te micronizer. Ko te pāmahana o nga hua kua oti i te tomokanga me te putanga kia iti iho i te 85°C.