Ko te whakamarumaru muka uku he momo rauemi whakamarumaru pāmahana-teitei e whakamahia whānuitia ana i roto i ngā mahi ahumahi. He mea hanga mai i ngā muka alumina-silica tino parakore, i ahu mai i ngā rauemi mata pēnei i te uku kaolin, te silicate konumohe rānei.
Ka rerekē pea te hanganga o ngā paraikete muka uku, engari ko te nuinga o te wā he 50-70% te alumina (Al2O) me te 30-50% te silica (SiO2). Ka whakaratohia e ēnei rauemi he āhuatanga whakamahana pai rawa atu mō te paraikete, nā te mea he teitei te ira rewa o te alumina, he iti hoki te kawe wera, engari he pai te pumau o te silica ki te wera me te ātete ki te wera.
Whakamātao paraikete muka ukuhe āhuatanga anō hoki ōna. He tino ātete ki te ru wera, arā, ka taea e ia te tu atu ki ngā huringa tere o te pakaru o te pāmahana, te hekenga rānei. Hei tāpiri, he iti ōna āheinga rokiroki wera, e āhei ai te whakamatao tere ina tangohia te pūtake wera.
Mā te tukanga hanga o te paraikete muka uku ka puta he rauemi mama, ngāwari hoki, he ngāwari ki te pupuri me te tāuta. Ka taea te tapahi ngāwari ki ngā rahi motuhake, ā, ka taea te hanga ki ngā mata me ngā āhua koretake.
I te nuinga o te wā, he pai rawa te whakamarumaru muka uku mō ngā taiao pāmahana teitei nā te mea he pai rawa atu ōna āhuatanga whakamarumaru wera me tōna kaha ki te tu atu i ngā āhuatanga kino rawa atu. Ahakoa e whakamahia ana i roto i ngā oumu, i ngā oumu tunu kai, i ētahi atu mahi ahumahi rānei, ka whakaratohia e te whakamarumaru muka uku he otinga pono mō te whakahaere i te whakawhiti wera me te whakapai ake i te whai huatanga o te pūngao.
Wā tuku: Whiringa-ā-rangi 29-2023
