Teitei te pakeke o te Alumina Parauri kua whakakākahuria

Ko te bauxite alumina parauri kua hanumi hei rauemi mata, ko te waro, te rino, i te pāmahana teitei ake i te 2000 nekehanga i roto i te whakarewa pewa, te huri kirihou i roto i te mira, te wehenga aukume ki te rino, ka wehea te mata ki ngā momo rahi matūriki, te kakano matotoru, te pakeke teitei, te hanganga matūriki porowhita, te whakakotahitanga teitei. He pai mō te hanga uku, te kapia whakakoi me te huri, te oro, te pupuhi onepu, te maka, me ētahi atu, ka taea hoki te whakamahi mō te hanga i ngā mea whakakākahu matatau.

Ko ōna mahi matua o te kōrundum parauri:
1.Nā tōna kaha nui me ētahi atu āhuatanga, e whakamahia ana mō te whakarewa i te pūwero rino, te whakarewa i ngā konganuku onge, ngā koranu motuhake, ngā uku, te arai oumu pupuhi (pakitara me te paipa); ngā taonga ā-tinana me te matū, ngā mono mura, ngā paninga ātete-wera me te ātete-waikura.
2.Nā te pakeke, te pai o te ira, te kaha teitei, ka whakamahia i roto i te pūnaha matū hei momo oko tauhohenga me ngā paipa, ngā wāhanga papu matū; Ka hangaia ngā wāhanga miihini, ngā momo pokepokea katoa, pērā i te pokepokea tuhi waea, te pokepokea matua pene pēhi, me ētahi atu; Ka hangaia ngā taputapu, ngā mea whakairo pokepokea, ngā rauemi ārai-matā, ngā hononga tangata, ngā mowhiti hiri me ētahi atu.
3.Ko ngā rauemi whakamahana korunamu, pērā i te pereki mārama korunamu, te pōro kōwhao korunamu me ngā hua muka, e whakamahia ana i roto i ngā momo pakitara oumu pāmahana teitei me te tihi, e rua hei tiaki i te wera. Ko te onepu rahi matūriki emery he mea hanga mai i te poraka emery horihori, mā te whakamahi i te roera, te huri pōro, te barmark me ētahi atu taputapu tukatuka, ko te rahi matūriki mā te F8-F325. Ko te nuinga e whakamahia ana mō te oro, te huri, te huri ahumahi, me ētahi atu, ka taea hoki te horoi kia rite ki ngā hiahia o te kiritaki, te pickling me ētahi atu tukatuka, kia tutuki ai ngā hiahia rerekē o te kiritaki.

I muri i te tukatuka anō i te kōrunuma parauri waro-iti, ka whakaitihia te toenga o te waro i roto i te kōrunuma parauri, kia kore ai e pakaru te hua e whakamahia ana, kia kore ai e pakū, kia pakari hoki mō ngā rauemi mata o te ahumahi whakakoi, o te ahumahi ātete ahi. E whakamahia ana mō ngā whakakoi uku, ngā whakakoi, ngā whakakoi waro, ngā whitiki, ngā whakakoi pania, me ētahi atu, e ai ki te toenga o te waro ka wehea kia: kōrunuma parauri kua whakakoitia C ≤0.05%, kōrunuma parauri waro-iti C ≤0.10%, kōrunuma parauri noa C ≤0.15%.