Izindaba

Ukuhlukaniswa kwe-Fused Spinel kanye ne-Sintered Spinel

I-Spinel (MgO·Al2O3, efushanisiwe ngokuthi MA) iyona kuphela inhlanganisela kanambambili ohlelweni kanambambili lwe-MgO-Al2O3.Ingancibilika kancane nge-MgO ne-Al2O3 ukuze kwakhe isixazululo esiqinile esilinganiselwe.I-Corundum (α-Al2O3) i-spinel yesisombululo esiqinile yenziwa ekubunjweni okucebile kwe-Al2O3;i-periclase isixazululo esiqinile se-spinel sakhiwe ekubunjweni okucebile kwe-MgO.Ukuncibilika okukhulu okuqinile kwenzeka emazingeni okushisa amabili ahlaziyiwe e-eutectic e-MA-Al2O3 ne-MgO-MA, angu-1925 °C no-1995 °C, ngokulandelana.

Uma i-MgO kanye ne-Al2A benza i-spinel ngokusho kokwakheka kwethiyori, izokhiqiza cishe u-8% ukunwetshwa kwevolumu, ngakho-ke kunzima ukuhlanganisa lapho i-sintered, futhi kulula ukuyihlakaza nge-MgO noma i-Al: iphuzu elibukhali lesixazululo esiqinile i-MgO. noma i-Al2O3 Spar inokusimama okungcono kokuthuthumela okushisayo ngenxa yomehluko ku-coefficient yokwandisa phakathi kwamaminerali.

Ngokwendlela yokuhlanganiswa kwe-spinel, ingahlukaniswa ibe yi-spinel e-sintered, i-spinel ehlanganisiwe kanye ne-spinel esebenzayo, ngaphezu kwe-high-density spinel.

1. I-sintered spinel kanye ne-electrofused spinel ikhiqizwa ngezindlela ze-sintering kanye ne-electrofusion, ngokulandelana;

2. I-spinel esebenzayo ibuye ihlanganiswe ngendlela ye-sintering, kodwa ihluke ku-spinel ye-sintered, izinga lokushisa layo le-synthesis liphansi (1200-1300 ℃), futhi ingxube ayiguquki ngokuphelele ibe yi-spinel, kodwa iqukethe inani elincane le-α -Al2O3 yamahhala futhi noma i-MgO yamahhala, isetshenziswa ikakhulukazi njenge-matrix ye-spinel refractories noma ukukhiqizwa kwe-high-density spinel:

3. Ukuminyana kwenqwaba ye-high-density spinel ngokuvamile kukhulu kuno-3.40g/cm3, ngokuvamile okwenziwa ngempushana yomgogodla esebenzayo ngokucindezela Ibhola noma ngokucindezelwa, i-sintered ekushiseni okuphezulu okungaba ngu-1700 ° C.

4. I-Fused spinel iwuhlobo lwe-high-purity synthetic refractory material, eyenziwe nge-alumina kanye nokukhanya okuhlanzeke okuphezulu okushiswe i-magnesium njengezinto zokusetshenziswa eziyinhloko futhi kupholiswe ngemva kokuncibilika ekushiseni okuphezulu ngaphezu kuka-2300 ℃ esithandweni somlilo se-arc kagesi.

I-alumina magnesia spinel ehlanganisiwe inobuningi benqwaba futhi inokumelana nokugqwala okuhle, ukumelana ne-slag kanye nokuzinza kokushisa okushisayo.Okulandelayo isithombe se-Yufa Group's spinel ehlanganisiwe: