Izitena ze-alumina eziphezulu ziveliswa nge-chamotte ye-bauxite ekhethiweyo njengezinto eziphambili zokwenza izinto, ezitshiswa kwi-1450-1470°C ngenkqubo ephucukileyo enolawulo oluqinileyo lomgangatho. Izitena ze-alumina eziphezulu zenziwe nge-alumina okanye ezinye izinto eziluhlaza eziqulathe umxholo ophezulu we-alumina ngokubumba nangokutshisa. Ngenxa yeempawu zayo zokungaguquguquki, i-alumina enganyangekiyo inokumelana nokuxhathisa ukukhukuliseka kwe-asidi ye-slag.
Inkqubo Yezitena Ze-Alumina Eziphezulu
Phuma kwi-Select chamotte uze uyihluze ukuze uyisuse i-ayine ngaphambi kokuba uyiqhekeze, nto leyo enokuphucula umgangatho ophezulu wezitena ze-alumina. Kuba kukho inani eliphezulu le-grog kwizithako ezinokufikelela kwi-90-95%. Khetha uze uyihluze i-deayine ngaphambi kokuba i-grog ityunyuzwe.
Amanqanaba amathathu e-High Alumina Brick
Ngokweenxalenye ezahlukeneyo ze-Al2O3, izitena ze-alumina eziphezulu zingahlulwahlulwa zibe ziiNqanaba eziThathu eTshayina.
Izitena zeAlumina ezikumgangatho ophezulu zeBanga loku-1 zinomthamo we-Al2O3 ongaphezulu kwe-75%.
Izitena ze-Alumina eziPhakamileyo zeBanga lesiBini zinomthamo we-Al2O3 oyi-60~75%.
Izitena ze-Alumina eziPhakamileyo zeBanga lesiThathu zinomthamo we-Al2O3 oyi-48~60%.
Iimpawu zeSitena se-Alumina esiPhakamileyo
Izitena ze-alumina eziphezulu zineempawu ezintle ezifana nokusebenza kakuhle kobushushu obuphezulu, ukugqwala okukhulu kunye nokumelana nokuguguleka, uxinano olukhulu, umxholo wesinyithi ophantsi, njl.
| Izinto | Izitena ze-alumina eziphezulu zebanga lokuqala | Izitena ze-alumina eziphezulu zebanga lesibini | Izitena ze-alumina eziphezulu zebanga lesithathu | Izitena ze-alumina eziphezulu ze-grade ekhethekileyo |
| I-LZ-75 | I-LZ-65 | I-LZ-55 | I-LZ-80 | |
| I-Al2O3 % ≥ | 75 | 65 | 55 | 82 |
| I-Fe2O3 % ≤ | 2.5 | 2.5 | 2.6 | 2.0 |
| Ubuninzi bobuninzi g/cm3 | 2.5 | 2.4 | 2.3 | 2.6 |
| Amandla okutyumza abandayo i-MPa ≥ | 70 | 60 | 50 | 80 |
| 0.2MPa Ukungaguquguquki komthwalo phantsi komthwalo ℃ | 1510 | 1460 | 1420 | 1550 |
| Ukungaguquguquki kwe-refractoriness ℃ ≥ | 1790 | 1770 | 1770 | 1790 |
| Ukuqhekeka okubonakalayo % ≤ | 22 | 23 | 24 | 21 |
| Ukutshintsha kweLinear Refurming 1450℃×2h % | -0.3 | -0.4 | -0.4 | -0.2 |
Isicelo seZitena zeAlumina eziphezulu
Izitena ze-alumina eziphezulu zingasetyenziswa kwi-blast furnace, kwi-hot blast stove, kwi-electric furnace. Kwakhona izitena ze-alumina eziphezulu zisetyenziswa kwi-iron ne-steel, kwi-nonferrous, kwi-glass, kwi-samente, kwi-ceramics, kwi-petrochemical, kwi-machine, kwi-boiler, kwi-light industry, kwi-power, nakwi-military industry njl.njl.
