Izitini eziphezulu ze-chrome zenziwe nge-magnesia (MgO) ne-chromium oxide (Cr2O3) njengesithako esiyinhloko, i-periclase ne-spinel njengezingxenye eziyinhloko zamaminerali zemikhiqizo ephikisayo. I-refractoriness ephezulu yezitini, amandla okushisa aphezulu, ukumelana nokumelana nokuguguleka kwe-slag, ukuzinza okuhle kakhulu kokushisa, i-acidic slag nayo inokuguquguquka okuthile. Izinto ezingavuthiwe eziyinhloko zokukhiqiza isitini esiphezulu se-chrome refractory yi-sintered magnesia ne-chromite. I-Purity magnesia impahla eluhlaza kufanele ibe phezulu ngangokunokwenzeka, izidingo zokwakheka kwamakhemikhali echromite yilezi: Cr2O3: 30 ~ 45%, CaO1.0 ~ 1.5%.
Izitini eziphezulu ze-chrome ikakhulukazi zihlanganisa i-Cr2O3, i-monoclinic zirconia ne-alumina powder. Ngakho-ke, ukusebenza kwe-chromebricks ephezulu kuhlobene kakhulu nokusebenza kwalezi zinto. Isitini somlilo esiphezulu se-chrome siqukethe i-chromium hemitrioxide engu-30%, futhi isitini esiphezulu se-chrome sibonakala ngokumelana ne-asidi ne-alkali slags, futhi sisetshenziswa ikakhulukazi kungqimba lokuzihlukanisa, nezithando zomlilo ezingenayo insimbi, njll.
Isitini esiphezulu se-chrome refractory senziwe ngengxube yeshaja ye-chrome yekhwalithi ephezulu kanye ne-chrome ore. Ngokwezidingo ezahlukene, lungisa okuqukethwe kwe-Cr2O3, Ukuqina kokushisa komkhiqizo nokusebenza kwezinga lokushisa eliphezulu kuyanelisa. Izitini eziphakeme ze-chrome zisetshenziswa kakhulu kuhhavini lukasimende kanye nesithando somlilo esingenamvubelo se-metallurgical njll.
Into | I-RS-Cr94 | I-RS-Cr92 | I-RS-Cr90 | I-RS-Cr80 |
I-Cr2O3 % | 94 | 92 | 90 | 80 |
I-TiO2 % | 3.8 | 3.8 | 4 | - |
I-Porosity ebonakalayo % | ≤16 | ≤20 | ≤20 | ≤20 |
Ukuminyana ngobuningi g/cm3 | ≥4.33 | ≥4.05 | ≥4.1 | ≥4.00 |
Amandla acindezelayo abandayo MPa | ≥200 | ≥100 | ≥100 | ≥100 |
0.2Mpa Refractoriness Under Load T0.6 ℃ | ≥1700 | ≥1680 | ≥1680 | ≥1670 |
Izitini eziphakeme ze-chrome zingasetshenziswa embonini yensimbi, imboni yempahla yokwakha, nezinye iziko lokuncibilikisa elingeyona i-ferrous, njll. futhi zingasetshenziswa ukumisa indawo yokucwilisa yomshini omusha owomile weziko likasimende nezithando zamathangi engilazi njengamasheke kanye ezinye iziko lezimboni.
I-RS refractory ifektri ingumnikezeli wezitini we-chrome high refractory ochwepheshe owasungulwa ekuqaleni kwawo-90s wekhulunyaka lamashumi amabili. Ifekthri ye-RS refractory ikhethekile ku-high chrome block iminyaka engaphezu kwengu-20. Izinzuzo ze-RS Refractory Factory zimi kanje: