A na-ekewa brik alumina dị elu site na ọdịnaya alumina n'ime: Ọkwa III (Al₂O₃: 48–65%), Ọkwa II (Al₂O₃: 65–75%), Ọkwa I (Al₂O₃: 75–80%), na Ọkwa Pụrụ Iche (Al₂O₃): Karịrị 8.
A na-ekewa ha site n'ụdị kiln a na-eji: spalling{0}} dị elu na-eguzogide {{1} brik alumina maka cement kilns, obere- brik dị elu - brik alumina maka stovu ọkụ na-ekpo ọkụ, na phosphate - bonded elu -alumina brik maka rotary kilns ma ọ bụ zinc oxide.
Dabere n'ụdị na nha, ha gụnyere mma{0}}kpụrụ akpụ, axe{1}} na kpụrụ brik{2}, yana brik dị elu{3}}alumina skew na brik arịlịka.
Otu dị iche iche gụnyekwara brik ọkọlọtọ, brik ndị a kpụrụ akpụ, na brik ndị nwere ụdị pụrụ iche.