Njira yolimbitsira ndi kusungira bwino zinthu zotayidwa za phosphate refractory

Phosphate castable imatanthauza castable yophatikizidwa ndi phosphoric acid kapena phosphate, ndipo njira yake yolimbitsira imakhudzana ndi mtundu wa binder yomwe imagwiritsidwa ntchito komanso njira yolimbitsira.

Chomangira cha phosphate castable chingakhale phosphoric acid kapena aluminium dihydrogen phosphate yosakanikirana yomwe imapangidwa ndi phosphoric acid ndi aluminium hydroxide. Kawirikawiri, chomangira ndi aluminiyamu silicate sizimakhudzana ndi kutentha kwa chipinda (kupatula chitsulo). Kutentha kumafunika kuti madzi asungunuke ndikusakaniza chomangiracho ndikulumikiza ufa wonse pamodzi kuti upeze mphamvu kutentha kwa chipinda.

Pakagwiritsidwa ntchito coagulant, kutentha sikofunikira, ndipo ufa wa magnesia wabwino kapena simenti ya alumina yambiri ikhoza kuwonjezeredwa kuti ifulumizitse kukhuthala. Ufa wa magnesium oxide wabwino ukawonjezeredwa, umagwira ntchito mwachangu ndi phosphoric acid kuti upange zinthu zotsutsana ndi kuuma. Simenti ya alumina ikawonjezeredwa, ma phosphates okhala ndi mphamvu zabwino zoyezera, ma phosphates okhala ndi madzi monga calcium monohydrogen phosphate kapena diphosphate amapangidwa. Hydrogen calcium, ndi zina zotero, zimapangitsa kuti zinthuzo zikhazikike ndikulimba.

Kuchokera ku njira yolimba ya phosphoric acid ndi phosphate refractory castables, zimadziwika kuti pokhapokha ngati liwiro la reaction pakati pa simenti ndi refractory aggregates ndi ufa ndi loyenera panthawi yotenthetsera ndi pomwe refractory castable yabwino kwambiri ingapangidwe. Komabe, zinthu zopangira refractory zimalowetsedwa mosavuta mu ndondomeko ya pulverization, ball milling ndi mixing. Zimayanjanitsidwa ndi simenti ndi kutulutsa hydrogen panthawi yosakaniza, zomwe zimapangitsa refractory castable kutupa, kumasula kapangidwe kake ndikuchepetsa mphamvu yokakamiza. Izi sizoyenera kupanga phosphoric acid wamba ndi phosphate refractory castables.