Iindaba-Ukuhlelwa kweFused Spinel kunye neSintered Spinel

Ukuhlelwa kweFused Spinel kunye neSintered Spinel

I-Spinel (i-MgO · Al2O3, efinyeziweyo njenge-MA) iyona kuphela i-binary compound kwi-binary system ye-MgO-Al2O3.Inokunyibilika ngokuyinxenye kunye ne-MgO kunye ne-Al2O3 ukwenza isisombululo esiqinileyo esilinganiselweyo.I-Corundum (α-Al2O3) isisombululo esiqinileyo se-spinel senziwe kwi-Al2O3 ecebileyo yokwakheka;I-periclase isisombululo esiqinileyo se-spinel senziwe kwi-MgO ecebileyo yokwakheka.Ubuninzi bokunyibilika okuqinileyo kwenzeka kumaqondo obushushu amabini ahlalutyiweyo e-eutectic e-MA-Al2O3 kunye ne-MgO-MA, eyi-1925 ° C kunye ne-1995 ° C, ngokulandelanayo.

Xa i-MgO kunye ne-Al2A ifom ye-spinel ngokobume bethiyori, iya kuvelisa malunga ne-8% yokwandiswa kwevolumu, ngoko kunzima ukuxinanisa xa i-sintered, kwaye kulula ukudibanisa kunye ne-MgO okanye i-Al: inqaku elibukhali lesisombululo esiqinileyo seMgO. okanye i-Al2O3 Spar inozinzo olungcono lwe-thermal shock ngenxa yokwahlukana kwe-coefficient yokwandisa phakathi kweeminerali.

Ngokwendlela ye-synthesis ye-spinel, inokwahlulwa ibe yi-sintered spinel, i-spinel edibeneyo kunye ne-spinel esebenzayo, ngaphezu kwe-high-density spinel.

1. I-sintered spinel kunye ne-electrofused spinel ziveliswa ngeendlela zokutshiza kunye ne-electrofusion, ngokulandelanayo;

2. I-spinel esebenzayo iphinde yenziwe ngendlela ye-sintering, kodwa ihluke kwi-sintered spinel, ukushisa kwayo kwe-synthesis kuphantsi (1200-1300 ℃), kwaye umxube awuguqulwanga ngokupheleleyo ube yi-spinel, kodwa iqulethe inani elincinci le-α -Al2O3 yamahhala kunye okanye i-MgO yamahhala, isetyenziswa kakhulu njenge-matrix ye-spinel refractories okanye ukuveliswa kwe-spinel ephezulu yoxinaniso:

3. Ubuninzi bobuninzi be-high-density spinel ngokubanzi bukhulu kune-3.40g/cm3, ngokuqhelekileyo yenziwe ngomgubo osebenzayo we-spinel ngokucofa iBhola okanye icinezelwe, ifakwe kwiqondo lobushushu eliphezulu malunga ne-1700 ° C.

4. I-Fused spinel luhlobo lwe-high-purity synthetic synthetic material refractory, eyenziwe nge-alumina kunye nokukhanya okuphezulu okutshisa i-magnesium njengezinto eziphambili kunye nokupholisa emva kokunyibilika kwiqondo lokushisa eliphezulu ngaphezu kwe-2300 ℃ kwisithando sombane se-arc.

I-Fused alumina magnesia spinel inoxinaniso lwesambuku esiphezulu kwaye inokumelana ne-corrosion elungileyo, ukumelana ne-slag kunye nokuzinza komothuko we-thermal.Oku kulandelayo ngumfanekiso weYufa Group's fused spinel: