Configuration txoj kev npaj ntawm refractory bricks thiab castables rau Noranda rauv

Noranda furnace hauv ob sab phlu siv alkaline refractory bricks, ncaj qha ua ke nrog magnesia-chrome cib, uas muaj zoo high-temperature ntim stability, tsis tshua muaj porosity, tsis tshua muaj huab cua permeability, zoo thermal shock kuj thiab slag yaig kuj; electrofusion ua ke nrog magnesium Chrome cib muaj cov tshuaj purity siab, tsis muaj impurity cov ntsiab lus, siab bulk ntom, siab kub compressive zog, zoo slag yaig kuj thiab kub flue roj yaig; Thaum fused cam khwb cia magnesia chrome bricks yog kim, tab sis lawv yog resistant rau kub thiab melting corrosion thiab yaig kuj yog tshwj xeeb zoo. Lawv feem ntau yog siv rau hauv qhov tseem ceeb thiab yooj yim melted qhov chaw ntawm lub qhov cub lub cev. Table 1 qhia txog cov cim tseem ceeb tam sim no ntawm magnesia-chrome cib rau Noranda furnaces.

Txij li thaum lub qhov cub Noranda ntawm ib lub tuam txhab tau tsim thiab muab tso rau hauv kev tsim khoom, cov khoom puas ntawm cov hauv ob sab phlu ntawm txhua lub voj voog ntau lawm tau raug tshuaj xyuas, tshuaj xyuas thiab tshawb fawb. Nyob rau hauv lub xyoo dhau los ntawm overhaul, qhov optimized configuration ntawm refractory cov ntaub ntawv rau txhua feem ntawm ob sab phlu tau rov txiav txim. Nyob rau hauv qhov tseem ceeb thiab tsis yooj yim damper cheeb tsam, qhov chaw nres nkoj them rau ntawm ib nrab ntawm phab ntsa them kawg, lub qhov cub yog ua los ntawm magnesia chrome cib, slag paug qhov kawg phab ntsa, slag kab hauv ob sab ntawm lub qhov cub thiab nag lossis daus. cheeb tsam yog xaiv UB605-13R1; tooj liab matte Fused cam khwb cia magnesia chrome cib tseem siv rau qhov hluav taws xob tawm thiab qhov chaw nres nkoj tooj liab. Lwm qhov chaw xws li lub cub tawg hauv qab thiab lub qhov cub hluav taws xob yog txhua tus xaiv ncaj qha ua ke nrog magnesia-chromium hloov mus rau hauv qab high-alumina bricks thiab cov ntaub ntawv tsis zoo li refractory, thiaj li hais tias lub localization ntawm refractory cov ntaub ntawv yuav tsum tau nce tsis tu ncua thiab maj mam.

Ntawm lawv, qhov tshiab Nora Randa rauv tau muab tso rau hauv kev tsim khoom rau 316 hnub, teeb tsa lub ntiaj teb cov ntaub ntawv hauv lub sijhawm tsim khoom ntawm tib hom rauv. Tom qab kev kho dua tshiab, cov khoom siv refractory tau siv los ua kom zoo rau kev teeb tsa, thiab kev tsim khoom tas li yog 494 hnub, uas yog ze rau lub ntiaj teb cov ntaub ntawv ntawm 498 hnub rau lub neej ntawm tib lub cub tawg.