Te kupu whakataki o te huruhuru ngohengohe o te karāhe

Ko ngā āhuatanga o te muka karāpeti pāmahana teitei ko te mama, te pai o te whakakorikori, te nui o te waro,ātete pāmahana teitei, kāore e memeha i te pāmahana tiketike,ātete ki te waikura, itikawe werame te pupuri āhua teitei.

Ko ngā painga o tēnei hua: i muri i te maimoatanga pāmahana teitei o te 1800 ~ 2500 ℃, kāore te rerekētanga pāmahana i waenga i ngā pūwāhi e rua o te whatu huruhuru e neke ake i te 50 ℃, nō reira he pumau te mahi a te hua. Nā te mea he mahi whakaputa tonu, ka taea te whakarite kia ōrite te rauemi whatu huruhuru ahakoa te whānui me te roa.

Ki te whakataurite kite muka waromēnā ka tukatukahia i te pāmahana iti (i raro i te 900 ℃), ko te huruhuru karāpeti e tukatukahia ana i te pāmahana teitei (i runga ake i te 2200 ℃) kei a ia ēnei painga:

（1) Ko te mimiti o te mamaoa wai me ētahi atu hau i runga i te whatu karāpeti he rua ngā whakarea o te iti iho i tērā i runga i te whatu waro i tukatukahia i te pāmahana iti. Mō te maha o ngā taputapu oko kati e hiahia ana kia whakakorea, ko te parakore o te hau te tawhā matua. Heoi, nā te nui o te mimiti o te whatu waro i tukatukahia i te pāmahana iti, he uaua ki te whakakorea te oko.

(2) He kaha te ātete o te kiriuhi karāpiti ki te waikura wera. Ko te hanganga o te waro kāore he karāpiti he momo hanganga paparanga koretake. Nā te noho o ngā hapa hanganga rerekē ka nui ake te tawhiti o te paparanga, ā, ka ngāwari te whakaekenga e ngā ngota hāora me te waikura. Ko te whatunga tino pai me te whakaritenga toru-ahu o te kiriuhi karāpiti i muri i te maimoatanga pāmahana teitei ka tino whakaiti i te tawhiti o te paparanga, ā, ka kore e ngāwari te whakaekenga e ngā ngota hāora, ā, ka tino whakanui ake i te kaha ārai-mate.

(3) He teitei te parakore o te whatu karāpeti, ā, neke atu i te 99.5% te nui o te waro. Ko te nui o te waro o te whatu waro i te pāmahana iti he iti iho i te 93%, he ngāwari ki te whakapoke i te taiao i roto i te oumu.

I roto i te kupu kotahi, he pai ake te pānga o te huruhuru karāhe i tukatukahia i te pāmahana teitei me te roa ake o te ora ratonga i te huruhuru waro pāmahana iti.