Cov txheej txheem los txo cov nqi corrosion ntawm refractory hauv ob sab phlu

Los ntawm ib tug loj npaum li cas ntawm slag resistance test kev tshawb fawb thiab kev ua hauj lwm ntawm lub converter, ib co kev paub txog corrosion kuj ntawm refractory linings yuav tau txais:

(1) Cov muaj pes tsawg leeg ntawm cov hlau molten muaj feem cuam tshuam rau lub neej ntawm cov ntaub ntawv refractory, cov ntsiab lus ntawm silicon, hav zoov, thiab leej faj.

(2) Kev kub siab kawg ntawm lub converter yuav ua rau txo qis hauv lub neej ntawm lub qhov cub hauv ob sab phlu. Thaum qhov kawg kub siab tshaj 1700 ° C, txhua txhua 10 ° C nce yuav ua rau kom cov corrosion ntawm refractory hauv ob sab phlu ntawm lub cub tawg.

(3) Ua kom cov alkalinity ntawm cov slag yog qhov zoo los txo cov corrosion ntawm cov slag mus rau qhov yooj yim refractory.

(4) Ua kom cov Mg0 cov ntsiab lus hauv cov slag tuaj yeem txo qhov corrosion ntawm slag ntawm lub refractory hauv ob sab phlu ntawm lub cub tawg.

(5) Ntxiv Fe0 cov ntsiab lus hauv cov slag yuav ua rau corrosion ntawm cov khoom siv refractory ntawm lub qhov cub hauv ob sab phlu nce.

(6) Nyob rau hauv thawj theem ntawm kev hloov pauv hloov, lub hauv paus ntawm cov slag yog qhov tsawg, thiab cov hauv ob sab phlu yog qhov hnyav heev. Dolomite slag yuav tsum tau siv los ua Mg0 cov ntsiab lus hauv slag ze rau lub xeev saturated.

(7) Fluorite kuj corrodes lub cub tawg hauv ob sab phlu, yog li cov fluorite ntxiv yuav tsum raug txo kom ntau li ntau tau.

(8) Ntawm dolomite thiab magnesia dolomite refractories, Mg0 muaj qhov zoo dua slag yaig tsis kam tshaj Ca0, tab sis lub xub ntiag ntawm Ca0 tuaj yeem txhim kho qhov kub thiab txias thiab slag nkag mus ntawm refractories.

(9) Cov ntaub ntawv raw ntawm lub cub tawg hauv ob sab phlu refractories yuav tsum muaj ntau dua purity. Piv txwv li, magnesium dolomite xuab zeb yuav tsum muaj tag nrho cov impurities ntawm SiO2 + A12O3 + FeO tsawg dua 3%; lwm yam xws li fused magnesia, graphite, thiab lwm yam kuj muaj cov kev cai zoo sib xws.