Hnub Kawg:22,Tsib,2023

Qee cov khoom siv thoob plaws hauv kev lag luam tau ua haujlwm ntawm qhov kub ntawm 900 ° C rau lub sijhawm ntev. Cov khoom siv resistant yog qhov nyuaj rau ncav cuag lub xeev ntawm ceramic sintering ntawm qhov kub thiab txias, uas cuam tshuam rau kev ua tau zoo ntawm cov ntaub ntawv refractory; Qhov zoo ntawmsodium hexametaphosphate nyob rau hauv refractory castable thiab tshuaj tsuag filling yog tias nws muaj qhov ruaj khov thiab zoo compressive zog thiab hnav tsis kam thiab thermal shock kuj. Nws pab ntxiv dag zog rau cov khoom sib txuas ntawm cov khoom siv refractory, thiab tuaj yeem ua cov hmoov nplej los yog cov ntaub ntawv refractory sib koom ua ke kom pom lub zog txaus.

Nyob rau hauv lub sij hawm ntev kev loj hlob ntawm circulating khoom, noj lub boiler raws li ib tug piv txwv, vim lub fluidized ceev ntawm combustion hais, lub siab kub muaj ib tug muaj zog erosion thiab hnav cuam tshuam rau hauv ob sab phlu refractory ntaub ntawv, tshwj xeeb tshaj yog lub boiler combustion chamber thiab cyclone separator. thiab lwm qhov chaw hauv qab hnav thiab thermal shock cuam tshuam ntawm cov khoom, airflow thiab plua plav tawm, uas ua rau yaig, hnav, tev thiab tawg ntawm cov ntaub ntawv refractory. Nws cuam tshuam rau kev ua haujlwm ib txwm ua thiab kev tsim cov boiler.

Yog li ntawd, nws yog ib qho tsim nyog los tsim cov binders tshiab nrog kev kub siab, tiv thaiv corrosion, hnav tsis kam thiab thermal poob siab los txhim kho kev ua haujlwm ntawm cov ntaub ntawv refractory.

Sodium hexametaphosphate muaj qhov zoo nyob rau hauv refractory castable thiab tsuag filling. Los ntawm kev xaiv ntawm qhov sib piv thiab cov txheej txheem kev npaj tsis tau, lub binder yog ib qho nruab nrab ncua kev kawm ntawv dispersion system, uas tsis tsuas yog muaj zog adhesion thiab tsis muaj corrosion rau hlau matrix, tab sis kuj muaj ntau yam ntawm daim ntawv thov kub kub resistant inorganic binder.

Sodium hexametaphosphateyog hydrolyzed rau sodium dihydrogen phosphate (NaH2PO4) thaum nws yog siv los ua ib tug binder nyob rau hauv refractory castables thiab tshuaj tsuag. NaH2PO4 thiab alkaline ntiaj teb hlau oxides xws li magnesia yog npaj los sib tov, tuaj yeem hnov ​​​​mob ntawm chav tsev kub kom tsim Mg (H2PO4)2. Mg (H2PO4)2 yog qhuav sai sai rau daim ntawv [Mg(PO3)2]n thiab [Mg2(P2O7)]n, uas ntxiv dag zog rau lub complex thiab muab ntau zog ntau yam ntawm kub (txog 800 ° C) C) ua ntej lub xub ntiag ntawm cov kua theem.

Cov ntaub ntawv refractory yog cov ntaub ntawv tseem ceeb ntawm cov hlau thiab hlau, cov khoom siv hauv tsev, cov hlau tsis muaj hlau, petrochemical, tshuab, hluav taws xob, kev tiv thaiv ib puag ncig thiab lwm yam kev lag luam kub. Sodium hempetaphosphate daim ntawv cog lus kuj yog ib qho khoom siv tsis tau rau txhua yam ntawm kev kub siab thermal thermal kiln thiab khoom siv.