1. Ua rau puas rau refractory cib nyob rau hauv cov ntaub ntawv refractory ladle
1. Ladles yog siv los thauj cov hlau kub kub. Thaum lub sij hawm kev thauj mus los, kub-kub molten hlau thiab slag nyob ib ncig ntawm 1680 degree scour thiab erode lawv, tshwj xeeb tshaj yog cov slag kab, uas yog ib qho tseem ceeb rau txiav txim lub neej kev pab cuam ntawm lub tank.
2. LF thiab lwm yam kev kho cua sov ua kom zoo ua kom puas tsuaj rau cov cib uas tsis muaj hluav taws kub.
3. Thaum lub converter kais dej thiab cov hlau molten ntws tawm, lub hauv ob sab phlu raug hloov pauv kub, uas ua rau tawg thiab tev tawm.refractory brickshauv kab.
4. Thaum lub ladle yog loaded nrog molten hlau nyob rau hauv lub converter, lub high-temperature molten steel muaj ib tug muaj zog mechanical scouring nyob rau hauv qab, uas ua rau cov ntaub ntawv hauv ob sab phlu nyob rau hauv qhov chaw no muaj kev puas tsuaj los ntawm thermal shock.
2. Kev puas tsuaj ntawm cov khoom siv refractory hauv lub ladle
Qhov kev puas tsuaj ntawm cov ntaub ntawv refractory nyob rau hauv lub ladle yog tsuas yog tshwm sim los ntawm yaig thiab nkag mus ntawm high-temperature slag. Lub slag kab ntawm lub ladle yog tsuas yog melted, thiab sab phab ntsa yog tawg thiab thermally tev vim qhov nkag ntawm slag. Lub melting tus nqi yog txuam nrog slag kub, viscosity thiab cov tshuaj tiv thaiv tus nqi ntawm cov khoom. Lub siab kub ntawm cov hlau molten, lub sijhawm khaws cia ntev hauv lub ladle, qhov qis viscosity ntawm slag, qhov pore nkag ntawm cov khoom siv matrix, cov kua theem nkag thiab qhov diffusion hauv cov khoom theem, ua rau muaj pes tsawg leeg thiab cov qauv ntawm cov khoom siv. cov ntaub ntawv saum npoo hloov zoo, tsim cov txheej txheem metamorphic nrog rau qib siab ntawm kev solubility, uas yooj yim rau tev tawm thiab ua kom qhov kev puas tsuaj ntawm cov pob zeb refractory. Lub hauv paus ntawm lub ladle nrog tib yam lossis sib txawv tshuaj muaj pes tsawg leeg ntawm cov khoom siv refractory muaj qhov sib txawv ntawm kev puas tsuaj vim nws cov qauv sib txawv thiab kev ua haujlwm. Lub ladle tsis tuaj yeem ua haujlwm tsis tu ncua, ua rau txo qis hauv ob sab phlu kub lossis txawm tias lub tsho txias, uas tseem ua rau cov txheej txheem txheej txheej txheej, txo cov kev pab cuam lub neej ntawm lub ladle.
Kev yaig ntawm slag ntawm cov ntaub ntawv refractory tsis txwv rau kev tawg ntawm qhov chaw, tab sis cov slag kuj tuaj yeem nkag mus rau sab hauv ntawm cov ntaub ntawv refractory, nthuav nws cov tshuaj tiv thaiv thaj tsam thiab qhov tob, thiab ua kom muaj kev hloov pauv hauv nws cov khoom thiab cov qauv nyob ze. qhov saum npoo ntawm cov khoom, tsim cov txheej txheem metamorphic nrog cov solubility siab, ua kom puas tsuaj. Qhov kev faib ua feem ntawm qhov ntxeem tau yog roughly proportional rau porosity. Yog li ntawd, txawm hais tias cov tshuaj muaj pes tsawg leeg ntawm cov ntaub ntawv refractory yog tib yam, lawv cov melting poob tus nqi sib txawv vim lawv cov koom haum sib txawv.
Qhov siab dua qhov qhib porosity ntawm cov khoom siv refractory, qhov ceev ntawm slag ntxeem tau tus nqi, thiab qhov ntxeem tau qhov sib piv yog kwv yees li proportional rau lub porosity. Txawm hais tias qhov pom meej porosity ntawm cov khoom siv refractory zoo ib yam, tus nqi yaig kuj tseem yuav hloov yog tias cov duab, qhov loj me thiab kev faib tawm ntawm qhov pores txawv.
3. Cov yam ntxwv ntawm cov khoom siv refractory rau ladle hauv ob sab phlu
Raws li kev soj ntsuam saum toj no, cov khoom siv refractory rau ladle hauv ob sab phlu yuav tsum muaj cov yam ntxwv hauv qab no: cov qauv tsim ntom ntom ntom ntom ntom ntom; micro-expansion ntawm qhov kub thiab txias, zoo ntim stability; siab zog, thiab ib tug me me piv ntawm nruab nrab-kub lub zog rau high-temperature zog.
Thaum lub sij hawm siv cov ntaub ntawv refractory, slag yooj yim nkag los ntawm cov cua sov saum npoo mus rau hauv qhov sib sib zog nqus, txo cov porosity nyob ze ntawm qhov chaw ua hauj lwm thiab densifying nws, tsim ib tug heev tuab metamorphic txheej. Thaum qhov kub thiab txias hloov pauv, cov kab nrib pleb sib npaug rau qhov chaw ua haujlwm yog tsim los ntawm kev sib tshuam ntawm cov txheej txheem metamorphic thiab cov txheej txheem refractory cib, ua rau cov cib tev tawm thiab puas. Txhawm rau txo cov txheej txheem tev ntawm cov khoom siv refractory, qhov tob ntawm slag nkag tuaj yeem raug txo los ntawm cov hauv qab no:
(1) Txhim kho qhov tsis kam ntawm cov ntaub ntawv refractory rau slag nkag;
(2) Txo cov porosity ntawm cov ntaub ntawv refractory thiab txo qhov yaig channel ntawm slag;
(3) Slag reacts nrog cov ntaub ntawv refractory los ua ib lub siab-melting-point compound retaining phab ntsa los tiv thaiv slag nkag;
(4) Ua kom cov viscosity ntawm slag. Qhov siab dua qhov viscosity ntawm slag, qhov phem nws yaig rau cov ntaub ntawv refractory.
