He mea hanga te alumina parauri kua whakaranua ki te bauxite kounga teitei hei rauemi mata, hei anthracite me ngā kongakonga rino. Ka hangaia mā te whakarewa pewa i te pāmahana 2000°C, neke atu rānei. Ka kuruhia, ka whakakirihouhia mā te mīhini huri-ake, ka tīpakohia mā te aukume hei tango i te rino, ka tātarihia ki ngā rahi rerekē, ā, he matotoru, he mārō hoki tōna kakano. Ko ngā pire teitei, porowhita, e tika ana mō te hanga uku, te kapia whakakoi ātete-teitei me te huri, te whakakanapa, te pupuhi onepu, te whakarewanga tika, me ētahi atu, ka taea hoki te whakamahi hei hanga i ngā mea whakakākahu kounga teitei.
Ngā Āhuatanga Matū me te Āhuatanga Tinana | ||||||
| Ngā taonga | Al2O3 | Fe2O3 | SiO2 | Kīanga papatipu | Tae | Tono |
| Taumata Tuatahi | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Maroon | Rauemi ātete-wera, |
| Tau II | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Matūriki pango | whakakoi pai |
| Taumata III | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Paura hina | Te whakakanapa, te huri |
| Tau IV | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Matūriki pango | Te huri, te tapahi, te pupuhi onepu |
| Tau V | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Paura hina | Te whakakanapa, te huri |
Teitei o te ātete, Teitei o te ātete i raro i te kawenga
He pai te ātete ki te para me te ātete ki te waikura
Te kiato teitei, te iti o te porosity Te ātete ki te horoi
He pai te pumau o te ru wera
Te kaha teitei me te ātete kakahu
He pai te ātete ki te mahi kirikiri
He kaha wera pai
1. He pai te alumina parauri kua whakaranua mō te hanga taputapu whakakoi uku me te kapia, e whakamahia ana mō te huri i ngā konganuku kaha-kukume, pērā i te maitai waro, te maitai koranu whānui, te rino maka ngohengohe me te parahi mārō, me ētahi atu.
2. E whakamahia whānuitia ana hei whakarite mata, hei horoi, hei huri, hei whakakanapa i ngā momo konganuku, karāhe, rapa, me ngā ahumahi pokepokea ai.
3. Ka taea hoki te whakamahi hei rauemi ātete ahi.
Mena he pātai āu, tēnā whakapā mai.