Ko tenei whakamaroke pahū hurihuri (rotary kiln) ka hokona mai i te wheketere hiko hou i Haina ka whakamahia te umu hurihuri mo te hangarua me te calcining rauemi cathode pākahiko. 3 marama ki te whakaputa me te tuku FAT wheketere me te whakarite tuku ki te pae kiritaki.Ko te mahi a te calciner hurihuri e whai ake nei:(1) Te whariki