Hawsha warshadaha ee heerkulka sare leh sida soo saarista sibidhka, sameynta birta, iyo soo saarista galaaska, agabka adkeysiga leh ayaa muhiim u ah xasilloonida hawlgalka iyo xakamaynta kharashka.Lebennada laf-dhabarta ee Magnesia alumina, oo ah doorasho sare oo loogu talagalay dadka isticmaala warshadaha adduunka oo dhan, waxay ka soo muuqdaan xasillooni heer sare ah oo kulka ah, iska caabbinta daxalka, iyo saaxiibtinimo deegaanka ah.Tilmaamahan wuxuu jebinayaa waxyaabaha aasaasiga ah ee birlabka alumina ee magnesia ee baahiyahaaga warshadaha.
1. Qeexidda lebenka Magnesia Alumina Spinel
Lebennada spinel-ka ee Magnesia alumina waa walxo macdan ah oo ka samaysan oxide magnesium oo saafi ah (MgO, 80%-92%) iyo oxide aluminium (Al₂O₃, 3%-14%). Marxaladahooda ugu muhiimsan ee crystalline-ka - periclase iyo spinel-alumina (MgO·Al₂O₃) - waxay sameeyaan qaab-dhismeed deggan iyada oo loo marayo sintering heerkul sare. Iyada oo ah beddel aan chromium lahayn oo loogu talagalay refractories-ka dhaqameed, lebenka spinel-ka ee magnesia alumina waxay ka fogaadaan qiiqa sunta ah ee hexavalent chromium, iyagoo si buuxda u raacaya heerarka deegaanka ee caalamiga ah.
2. Sifooyinka Muhiimka ah ee Magnesia Alumina Spinel lebenka
Sifooyinka ugu muhiimsan ee lebenka alumina ee magnesium waxaa ka mid ah:
- ① Xasillooni shoog kuleyl oo aad u fiican, oo u adkeysan karta wareegyada qaboojinta biyaha 12-20 ee 1100°C;
- ② Iska caabin heer sare ah oo heer sare ah, oo ku faanta dhibic dhalaalaysa 2135°C iyo dabacsanaan ka hooseysa culayska>1700°C;
- ③ Daxalka xooggan iyo iska caabinta slag-ka ee ka dhanka ah slag-yada alkaline, gaasaska aashitada leh, iyo biraha alkali;
- ④ Awood dhisme oo la isku halleyn karo, oo leh cufnaan badan ≥2.90 g/cm³ iyo xoog burburin qabow ≥45 MPa.
3. Isticmaalka ugu Muhiimsan ee lebenka Magnesia Alumina Spinel
Buluugyada alumina ee Magnesia waxay ku habboon yihiin deegaannada heerkulka sare leh: aagagga kala-guurka ee sibidhka, dahaarka malqacadaha birta ah, dib-u-cusboonaysiinta foornada galaaska, iyo dahaarka foornada batroolka. Kala-duwanaanshahooda ayaa ka dhigaya lebenka alumina ee magnesia ku habboon hawlgallada jawiga alkaline iyo kuwa isku dhafan labadaba.
4. Talooyinka Xulashada ee Magnesia Alumina Spinel Lebens
Markaad dooranayso lebenka alumina ee magnesia, diiradda saar saddex qodob oo muhiim ah: isku waafaji saamiga MgO/Al₂O₃ jawigaaga habka, hubi xuduudaha farsamada ee asaasiga ah (cufnaanta badan, iska caabbinta shoogga kulaylka), oo hubi shahaadooyinka tayada alaab-qeybiyaha.Mudnaanta siiya lebenka magnesia alumina spinel ee lagu tijaabiyay xaaladdaada gaarka ah ee warshadaha si loo hubiyo waxqabadka ugu wanaagsan iyo cimriga dheer ee adeegga.
Buluugyada alumina ee Magnesia waxay isku daraan waxqabadka iyo waaritaanka, taasoo ka dhigaysa maalgashi caqli badan oo loogu talagalay warshadaha casriga ah ee heerkulka sare leh. Dooro buluugyada alumina ee magnesia ee saxda ah si kor loogu qaado isku halaynta qalabka loona yareeyo kharashyada dayactirka.
Waqtiga boostada: Diseembar-29-2025
