Pereki Mullite me ngā Pereki Sillimanite
Pereki MulliteHe pereki ātete-alumina teitei te mahi me te mullite (3Al₂O₃·2SiO₂) hei wāhanga tioata matua, koinei anake te rauemi wāhanga tioata pāmahana-teitei pumau i roto i te pūnaha Al₂O₃-SiO₂. He tino kaha te pakari pāmahana-teitei (kāore he whakarerekētanga i runga ake i te 1600℃ mō te whakamahinga roa, he tino iti te ngoki), he pai te mahi ru wera (he iti te whānui wera, he ārai-pakaru/kiri), he tino ātete ki te waikura (he ātete ki te horoi para waikawa/koretake me te waikura rewa, he iti noa iho(te parahanga), te kaha pēhi teitei i te pāmahana rūma me te kaha ā-ahua taurite, me ngā whakaritenga katoa me te whakaritenga ngāwari, e whakamahia whānuitia ana ki ngā momo ahumahi pāmahana teitei, e hanga ana i te rauemi ātete pai mō te arai matua o ngā oumu pāmahana teitei.
Whakarōpūtanga Hua:
1. Pereki Mullite i Whakatōngia:He mea hanga mai i te bauxite me te silica (1600-1700℃ sintering), Al₂O₃ 65%-72%. He iti te utu, kua pakeke, he pai mō ngā āhuatanga pāmahana waenga-teitei; e wātea ana i roto i ngā pereki āhua paerewa/motuhake, e whakamahia whānuitia ana i roto i ngā rauemi hanga me ngā oumu whakarewa.
2. Pereki Mullite Whakakotahitia:He mea whakakā hiko (neke atu i te 1900℃), he karaihe matotoru ake, he hanganga kiato ake. Ko te Al₂O₃ 70%-75%, he ātete pai ki te ru wera/waikura, he tino iti te ngoki. He pai mō ngā āhuatanga horoi kaha o te matua pāmahana teitei (neke atu i te 1650℃) (ngā oumu rewa karāhe, te mahi whakarewa kounga teitei).
3. Pereki Zircon Mullite:Tāpiri Mullite + zircon (ZrSiO₄) (1650-1720℃ sintering). Al₂O₃ 68%-75%, ZrO₂ 8%-15%, ātete kaha ake ki te horo. Whakamahia i roto i ngā wāhanga matua o te oumu rewa karāhe me ngā oumu whakarewa kore-ferrous e horo nui ana.
4. Pereki Mullite Tino Parakore:Ko te alumina/silica he tino parakore, Fe₂O₃≤0.2%, Al₂O₃ 72%-78%, he ātete ki runga ake i te 1850℃. Kāore he parahanga, he tino pumau i te pāmahana teitei, mō ngā āhuatanga tino parakore (te whakarewa tika, ngā oumu uku hiko).
5. Ngā Wāhanga Mullite i Hangaia i Mua:Ka taea te whakarite kia rite ki te rahi/te āhua o te oumu, kāore e tapahia i te wāhi mahi, he pai te hanga, he pai te hiri. He pai mō ngā wāhanga oumu koretake (ngā oumu wera, ngā oumu pakaru), ka whakaiti i te tūponotanga o te hinganga o ngā pereki.
Pereki SilimaniteHe mea hanga mai i te sillimanite tūturu (Al₂SiO₅, ko te ihirangi Al₂O₃ ariā he 62.9%) mā te puranga, te hanga me te sintering pāmahana teitei. Ko tōna āhuatanga matua ko te hurihanga o te sillimanite i te pāmahana teitei (1300-1500℃), me te whakanui i te rōrahi taurite (2%-3%), ka taea te whakakore i te whakahekenga sintering o te tinana pereki, ka nui ake te matotoru o te tinana pereki, ka pai ake te hiri. Ko tōna ātete ko te 1770-1830℃, he mea tino pai mō ngā āhuatanga mahi pāmahana waenga me te pāmahana teitei me ngā piki me ngā heke o te pāmahana me te waikura matū, me te mahi utu tino pai.
Whakarōpūtanga Hua:
1. Pereki Silimanite Noa:Silimanite tūturu (Al₂O₃ 60%-62%) + bauxite/uku, sintering tikanga. He pakupaku te pūwero, he pai te ru wera, he iti te utu; mō ngā pāmahana teitei tikanga, ngā piki me ngā heke o te pāmahana (korokoro oumu pupuhi, tāonga oumu uku).
2. Pereki Silimanite Tino Parakore:He silimanite taiao tino parakore (Al₂O₃ 62%-65%), Fe₂O₃≤0.3%, 1580-1650℃ sintering. He kikī ake, he pai ake te ātete ki te kawakore/waikura; mō te waikura matū iti (ngā oumu karāhe, ngā oumu whakarewa kore-ferrous).
3. Pereki Hikoi Sillimanite-Mullite:Sillimanite + mullite, whakapūmau-ā-tangata whakawhiti āhua + pumau pāmahana-tiketike. Al₂O₃ 63%-68%, taurite te ātete ki te ru wera/te ātete ngokingoki; mō ngā piki me ngā heke o te pāmahana, te kawenga pāmahana-tiketike (te raro o te oumu pupuhi, te awa rere karāhe).
Ngā hua pereki Sillimanite:Pereki awaawa, waka rere, paipa hurihuri, peihana whāngai, mowhiti kōhao, hoe whakaoho, poka, rango whāngai, pereki para poraka ahi, poraka whakakā, pereki āwhata, taupoki peihana whāngai, pereki puta-kōhao, pereki mura, kurupae, pereki uhi me ētahi atu momo me ngā whakaritenga.
Ngā Painga Matua:
1. Te Whakawhānui-ā-Wāhanga o te Huringa:Ka ārai te whakamīharotanga pāmahana teitei i te whakahekenga, kia tino kiato ai, kia pai ai hoki te hiri.
2. Te Pūmautanga Wera Taurite:He iti te horapa wera, he ātete pai ki ngā ru wera/mōmona, he pai mō ngā huringa pāmahana maha.
3. Te Utu-Pai Rawa:He rauemi mata sillimanite tūturu, he iti ake te utu i ngā pereki mullite, he pai mō ngā āhuatanga utu-iti.
4. Ātete Pai ki te Para:Ātete ki te waikura para/wai karāhe me te kakahu i te pāmahana tiketike, kāore e ngāwari ki te tihore atu.
5. Taiao me te Hoa-Taiao:Kāore he poke kino, he iti noa te parahanga rauemi, he pai mō ngā oumu e pai ana ki te taiao.
| Ngā Hua | ToruItiMullite | Mullite i whakatōngia | Sillimanite Mullite | Kua hanumiMullite | ||||
| Rārangi | RBTM-47 | RBTM-65 | RBTM-70 | RBTM-75 | RBTA-60 | RBTA-65 | RBTFM-75 | |
| Te ātete (℃) ≥ | 1790 | 1790 | 1790 | 1790 | 1790 | 1790 | 1810 | |
| Te Matotoru o te Papatipu (g/cm3) ≥ | 2.42 | 2.45 | 2.50 | 2.60 | 2.48 | 2.5 | 2.70 | |
| Te Āhua o te Porosity (%) ≤ | 12 | 18 | 18 | 17 | 18 | 18 | 16 | |
| Kaha Pakaru Matao (MPa) | 60 | 60 | 70 | 80 | 70 | 70 | 90 | |
| Huringa Raina Tuturu (%) | 1400°×2h | +0.1 -0.1 | | | | | | |
| 1500°×2h | | +0.1 -0.4 | +0.1 -0.4 | +0.1 -0.4 | +1 -0.2 | ±0.2 | ±0.1 | |
| Refractoriness Under Load@0.2MPa(℃) ≥ | 1520 | 1580 | 1600 | 1600 | 1600 | 1620 | 1700 | |
| Creep Rate@0.2MPa 1200°×2h(%) ≤ | 0.1 | ― | ― | ― | ― | ― | ― | |
| Al2O3(%) ≥ | 47 | 64 | 68 | 72 | 60 | 65 | 75 | |
| Fe2O3(%) ≤ | 1.2 | 0.8 | 0.8 | 0.7 | 1.0 | 0.8 | 0.5 | |
Pereki Mullite:
1. Ahumahi Whakarewa: Te tihi oumu wera, te kakau oumu, te arai koko, te oumu whakarewa whakarewa kore-whakarewa;
2. Ahumahi Rauemi Hanga: Rohe pāmahana teitei o te oumu uku, rohe whakawhiti o te oumu hurihuri sima, oumu kauhanga ātete;
3. Ahumahi Karāhe: Te pakitara taha o te oumu whakarewa karāhe mō te whakahou, te hongere, te horoi me te puna kaukau mahi;
4. Ahumahi Matū: Ouma pakaru hinu, oumu whakawera wera-teitei, oumu tunu whakakorikori;
5. Marae Tino Pai: Oumu uku hiko, oumu whakarewa tino tika (e tika ana mō te momo parakore teitei).
Ngā Pereki Silimanite:
1. Ahumahi Whakarewa: Pereki tiaki raro oumu pupuhi, arai korokoro oumu, rohe putanga rino, rohe pāmahana waenga me te iti o te oumu pupuhi wera;
2. Ahumahi Karāhe: Te pakitara taha puna kaukau mahi, te awa rere, te pereki awa me te pereki tirotiro whakahou o te oumu rewa karāhe;
3. Ahumahi Uku: Rohe tahu o te oumu uku, ngā taonga oumu (te parapara, te whata), te arai oumu kauhanga;
4. Ahumahi Matū: Te arai oumu whakarewa whakarewa kore-ferrous, te oumu tunu pāmahana teitei, te oumu tunu waikawa whanariki;
5. Ētahi atu Marae: Wāhanga wera-teitei o te tahu para, te arai whakamahana oumu sima (he pai mō te momo noa).
Ngā Pātai Auau
Me āwhina koe? Tirohia ā mātou wānanga tautoko mō ngā whakautu ki ō pātai!
He kaihanga tūturu mātou, he tohunga tā mātou wheketere ki te whakaputa rauemi ātete ahi mō ngā tau neke atu i te 30. Ka oati mātou ki te whakarato i te utu pai rawa atu, te ratonga pai rawa atu i mua i te hoko me muri i te hoko.
Mō ia tukanga whakaputa, he pūnaha QC katoa tā te RBT mō te hanganga matū me ngā āhuatanga ā-tinana. Ā, ka whakamatautauria e mātou ngā taonga, ā, ka tukuna atu te tiwhikete kounga me ngā taonga. Mena he whakaritenga motuhake āu, ka whakapau kaha mātou ki te whakatutuki i aua whakaritenga.
He rerekē te wā tuku i runga i te rahinga. Engari ka oati mātou ki te tuku wawe tonu me te kounga kua oti te whakapūmau.
Ko te tikanga, ka tukuna e mātou he tauira kore utu.
Āe, he pono, nau mai haere mai ki te toro mai ki te kamupene RBT me ā mātou hua.
Kāore he rohe, ka taea e mātou te whakarato i te whakaaro me te otinga pai rawa atu e ai ki tō āhuatanga.
Neke atu i te 30 tau mātou e hanga ana i ngā rauemi ātete ahi, he kaha te tautoko hangarau me te nui o ngā wheako, ka taea e mātou te āwhina i ngā kiritaki ki te hoahoa i ngā oumu rerekē me te whakarato ratonga kotahi-mutu.
