Phosphate castable e bua ka sekontiri se kopantsoeng le phosphoric acid kapa phosphate, 'me mokhoa oa eona oa ho thatafatsa o amana le mofuta oa binder o sebelisitsoeng le mokhoa oa ho thatafatsa.
Setlamo sa phosphate castable e ka ba phosphoric acid kapa tharollo e tsoakiloeng ea aluminium dihydrogen phosphate e hlahisoang ke karabelo ea asiti ea phosphoric le aluminium hydroxide. Ka kakaretso, binder le aluminium silicate ha li arabe ka mocheso oa kamore (ntle le tšepe). Ho futhumatsa hoa hlokahala ho fokotsa metsi le ho kokobetsa se tlamang le ho kopanya phofo e kopaneng ho fumana matla mochesong oa kamore.
Ha ho sebelisoa coagulant, ho futhumatsa ha ho hlokahale, 'me phofo e ntle ea magnesia kapa samente e phahameng ea alumina e ka eketsoa ho potlakisa coagulation. Ha phofshoana e ntle ea magnesium oxide e eketsoa, e arabela ka potlako ka asiti ea phosphoric ho theha, e bakang hore lisebelisoa tsa refractory li behe le ho thatafala. Ha samente ea aluminate e eketsoa, phosphates e nang le thepa e ntle ea gelling, phosphates e nang le metsi e kang calcium monohydrogen phosphate kapa diphosphate e thehoa. Hydrogen calcium, joalo-joalo, e etsa hore thepa e be thata le ho thatafala.
Ho tloha mochining o thata oa phosphoric acid le phosphate refractory castables, hoa tsebahala hore ke feela ha sekhahla sa karabelo lipakeng tsa samente le li-refractory aggregates le li-powders li loketse nakong ea ts'ebetso ea ho futhumatsa ho ka theoang mokhoa o babatsehang oa ho refractory. Leha ho le joalo, thepa e tala ea refractory e tlisoa habonolo ts'ebetsong ea ho phunya, ho sila ka bolo le ho kopanya. Ba tla itšoara ka sekontiri sa cementing 'me ba lokolle hydrogen nakong ea ho kopanya, e leng se tla etsa hore refractory castable e ruruhe, e lokolle sebopeho le ho fokotsa matla a khatello. Sena ha se monate bakeng sa tlhahiso ea li-phosphoric acid tse tloaelehileng le phosphate refractory castables.
Nako ea poso: Nov-04-2021