Ka hanaʻana o ke kaʻina uila uila

ʻO ka hānaiʻana kekahi o nā kaʻina hana wela i ka hana ma ka hana o ka hana o nā uila kiʻi a me nā huahana kiʻi. Ua laweʻia ka mea nui o nā huahana raw i hanaʻia ma keʻano o ka furnace e hoʻohana ana i nā mea e like me keʻano o ka paleʻana. ʻO ka lōʻihi o ka hoʻolimalima manawa e loli ana ma muli o nāʻano huahana, nā kiko'ī, a me ka curve curve i hoʻohanaʻia, e like me nā lā 12-23 mau lā. ʻO ka nui loa o ka mahana nui e ka huahana i ka wā o ka roasting he 1000-1250 ℃. ʻO ka wela o ka mahana o nā huahana semi-i hoʻopauʻia e pono ai ke kiʻi hou aku, akā ma hope o ka pauʻana o nā mea kūʻai aku i nā carbon a me nā mea i pau loa. Ma muli o ka hopena kūpono o ka mahana o ka mahana o keʻano o keʻano o ke kino a me nā mea e pili ana i nā huahana hope loa,ʻaʻole e emi iki ka nui o ka nui ma mua o 1200 ℃.