Volume density yog tag nrho cov ntim piv ntawm cov khoom thiab qhov pore ntim hauv refractory hluav taws cib loj. Qhov ntim ntom ntom cuam tshuam rau qhov porosity, lub zog, erodibility thiab hnav tsis kam ntawm firebrick.
Qhov porosity yog qhov feem pua ntawm qhov ntim ntawm qhov porosity hauv firebrick thiab tag nrho cov ntim ntawm cov khoom. Hauv lwm lo lus, qhov siab dua qhov ntim ceev, qhov me dua qhov porosity. Vim tias tseem muaj peb hom pores, thiab qhov porosity ntawm firebrick yog kaw porosity, uas yog qhov pom meej porosity qhia ntawm daim ntawv xeem. Qhov pom meej porosity ntawm hnyav refractory hluav taws cib yog feem ntau ntawm 10 feem pua thiab 28 feem pua , thiab tus qauv yog tsawg dua 16 feem pua yog hu ua cov khoom tsis muaj porosity. Tab sis nrog tsawg thiab tsawg cov khoom siv raw, thiab aluminium ore raug txiav tawm, qhov muaj pes tsawg leeg yog tsis ntxiv dag zog rau qhov raug rho tawm haujlwm, hauv cov txheej txheem tsim tawm tiag tiag, tsawg dua 20 feem pua ntawm cov hluav taws kub hnyav hu ua low porosity cib.
Porosity yog qhov yooj yim technical Performance index ntawm refractory cib. Nws loj cuam tshuam cov khoom ntawm refractory hluav taws cib, tshwj xeeb tshaj yog lub zog, thermal conductivity, slag kuj thiab thermal shock kuj. Thaum lub porosity nce, lub zog txo. Tsawg porosity yog qhov zoo rau qhov kub thiab txias thiab creep zog ntawm refractory hluav taws cib nyob rau hauv load. Txawm li cas los xij, qhov cuam tshuam ntawm porosity ntawm thermal shock kuj yog qhov nyuaj, thiab thermal shock kuj zoo dua thaum lub porosity nyob rau hauv ib qho chaw. Thiab porosity tsawg dhau tsis zoo rau thermal shock, tsis yog txhua qhov ntsuas tau siab lossis qis.
Txhawm rau tsim cov pob zeb sib xyaw nrog cov porosity tsawg, nws yog qhov yuav tsum tau xaiv cov khoom siv raw nrog cov porosity tsawg. Tsim kom tsim nyog particle gradation, rational siv binder, tag nrho cov sib xyaw ua ke, siab molding thiab nce firing kub, thiab ces ncua lub sij hawm tuav kom txo porosity. Nyob rau hauv ib qho amorphous castable, qhov sib ntxiv ntawm superfine hmoov thiab dispersant tuaj yeem tsim cov ntim nruj dua thiab tau txais cov khoom lag luam nrog cov porosity tsawg.
Txoj kev sib piv ntawm lub ntim ntom ntom thiab porosity nyob rau hauv refractory hluav taws kub hluav taws kub yog tias lub siab dua lub ntim ntawj nthab, qhov me me porosity yuav yog.
