Phosphate castable e bolela castable e kopantsoeng le phosphoric acid kapa phosphate, 'me mokhoa oa eona oa ho thatafatsa o amana le mofuta oa binder e sebelisitsoeng le mokhoa oa ho thatafatsa.
Sehokelo sa phosphate e ka lahlehang e ka ba phosphoric acid kapa tharollo e tsoakiloeng ea aluminium dihydrogen phosphate e hlahisoang ke karabelo ea phosphoric acid le aluminium hydroxide. Ka kakaretso, sehokelo le silicate ea aluminium ha li arabele mochesong oa kamore (ntle le tšepe). Ho futhumatsa hoa hlokahala ho qhibilihisa le ho kopanya sehokelo le ho kopanya phofo e kopaneng ho fumana matla mochesong oa kamore.
Ha ho sebediswa coagulant, ho futhumatswa ha ho hlokehe, mme phofo e ntle ya magnesia kapa samente e ngata ya alumina e ka eketswa ho potlakisa ho kopana ha mahlaku. Ha ho eketswa phofo e ntle ya magnesium oxide, e arabela kapele le phosphoric acid ho theha, e leng se etsang hore dintho tse hanyetsang di tiee le ho thatafala. Ha ho eketswa samente ya aluminate, di-phosphate tse nang le thepa e ntle ya gelling, di-phosphate tse nang le metsi tse kang calcium monohydrogen phosphate kapa diphosphate di a thehwa. Hydrogen calcium, jj., e etsa hore thepa e tie le ho thatafala.
Ho latela mokhoa oa ho thatafatsa oa li-castable tsa phosphoric acid le phosphate refractory, hoa tsebahala hore ke ha sekhahla sa karabelo pakeng tsa samente le li-aggregate tse hanyetsang le phofo se loketse nakong ea ts'ebetso ea ho futhumatsa moo ho ka thehoang castable e ntle ea refractory. Leha ho le joalo, thepa e tala ea refractory e tlisoa habonolo ts'ebetsong ea ho sila, ho sila bolo le ho kopanya. Li tla arabela le moemeli oa samente 'me li lokolle haeterojene nakong ea ho kopanya, e leng se tla etsa hore castable e hanyetsang e ruruhe, e lokolle sebopeho le ho fokotsa matla a khatello. Sena ha se ratehe bakeng sa tlhahiso ea li-castable tse tloaelehileng tsa phosphoric acid le phosphate refractory.
Nako ea poso: Pulungoana-04-2021