Tuag hlawv magnesiatseem yog ib qho tseem ceeb raw cov ntaub ntawv nyob rau hauv refractory kev lag luam, tshwj xeeb tshaj yog rau steel, cement, tsis yog -ferrous thiab siab - kub kub daim ntaub ntawv. Raws li cov neeg yuav khoom refractory them nyiaj ntau dua rau hauv lub neej thiab cov khoom siv ruaj khov, kev xaiv ntawm cov khoom siv magnesia tau dhau los ua kev tshaj lij dua ua ntej.
Hauv cov ntsiab lus yooj yim, tuag hlawv magnesia yog tsim los ntawm calcining magnesite ntawm qhov kub thiab txias kom txog thaum cov khoom ua ntom ntom thiab ruaj khov. Piv nrog rau qhov kub hnyiab magnesia, nws muaj qhov ntim zoo dua qub thiab ua haujlwm siab dua rau siab - qhov kub thiab txias. Qhov no ua rau nws tsim nyog rau kev tsim khoommagnesia cib, magnesia chrome cib, magnesia alumina spinel cib, ramming cov ntaub ntawv thiab lwm yam yooj yim refractory khoom.
Rau cov neeg yuav khoom, thawj qhov kev kuaj xyuas yog MgO cov ntsiab lus. Cov ntsiab lus siab dua MgO feem ntau txhais tau tias zoo dua refractoriness thiab corrosion kuj, tab sis qhov kawg xaiv nyob ntawm daim ntawv thov. Steel ladles, cement kilns thiab non{2}}ferrous furnaces yuav xav tau ntau qib. A good purchasing decision should be based on chemical composition, impurity level, bulk density and grain size distribution, not only on price.
Kev ua lag luam rau deadburned magnesia kuj cuam tshuam los ntawm cov khoom siv raw zoo thiab kev tswj xyuas ntau lawm. Cov neeg yuav khoom feem ntau sib piv cov khoom los ntawm MgO feem pua, CaO / SiO2 piv, Fe2O3 qib thiab sintering degree. Cov ntsuas no tuaj yeem cuam tshuam qhov kev ua tau zoo ntawm cov khoom siv refractory tiav. Yog tias cov khoom siv tsis ruaj khov, qhov kawg cib los yog castable tuaj yeem ua rau pom lub zog tsis sib xws, tsis zoo slag tsis kam lossis lub neej ua haujlwm luv dua.
Lwm qhov tseem ceeb yog particle loj. Cov khoom sib txawv refractory xav tau ntau qhov sib txawv ntawm cov nplej. Coarse grains tuaj yeem siv rau hauv kev tsim cib, thaum cov ntaub ntawv zoo dua tuaj yeem siv rau hauv kev sib xyaw lossis cov qauv tshwj xeeb. Thaum cov neeg yuav khoom thov rau sintered magnesia, lawv yuav tsum qhia meej txog qhov yuav tsum tau muaj qhov loj me, cov lus qhia tshwj xeeb thiab daim ntawv thov. Qhov no pab cov neeg muag khoom pom zoo rau qib uas tsim nyog dua.
Tus nqi ntawm cov tuag hlawv magnesia yog qhov tseem ceeb, tab sis nws yuav tsum tsis txhob yog qhov kev txiav txim siab nkaus xwb. Tus nqi qis dua yuav tsis pheej yig yog tias cov khoom siv tsis ruaj khov lossis tsis zoo sintering. Rau kev lag luam refractory ntau lawm, cov khoom siv raw zoo ib yam tuaj yeem txo cov teeb meem ntau lawm thiab txhim kho cov khoom tiav kev ntseeg tau. Qhov no yog vim li cas cov neeg siv khoom paub txog feem ntau ntsuas tus nqi thiab kev ua haujlwm.
Nyob rau hauv xyoo tas los no, cov neeg yuav khoom kuj tau ceev faj txog cov ntaub ntawv xa khoom. Tus neeg muag khoom ntseeg siab yuav tsum muab tshuaj ntsuam xyuas, cov ntaub ntawv lub cev, cov ntaub ntawv muaj peev xwm ntau lawm thiab cov ntsiab lus ntim. Rau cov neeg yuav khoom xa tawm, cov khoom ruaj khov thiab kev tswj xyuas kev xa khoom yog qhov tseem ceeb. Yog hais tias cov khoom siv nyob rau hauv tas li refractory ntau lawm, ncua sij hawm xa los yog inconsistent batches yuav cuam tshuam rau lub Hoobkas teem sij hawm.
Tuag burnt magnesia yog dav siv nyob rau hauv yooj yim refractory systems vim hais tias nws ua tau zoo nyob rau hauv alkaline slag ib puag ncig. Hauv kev siv steelmaking thiab cement kiln, yooj yim refractories feem ntau ntsib tshuaj tua, thermal load thiab mechanical hnav. Zoo- cov khoom siv zoo magnesia pab txhim kho cov kav ntev ntawm cov ntaub ntawv refractory.
Thaum xaiv cov ntaub ntawv magnesia refractory, cov neeg yuav khoom yuav tsum xav txog qhov chaw ua haujlwm kawg. Piv txwv li, cov cement kiln burning cheeb tsam yuav xav tau cov txheej txheem muaj zog thiab alkali tsis kam, thaum steel ladle daim ntaub ntawv yuav xav tau zoo dua slag corrosion kuj. Tib yam khoom siv raw yuav ua tau txawv nyob ntawm qhov kev tsim thiab qhov cub.
Zuag qhia tag nrho, tuag hlawv magnesia xaiv yog kev txiav txim siab yuav khoom. Cov neeg yuav khoom yuav tsum sib piv MgO cov ntsiab lus, qib impurity, grain loj, sintering zoo, tus neeg muag khoom ruaj ntseg thiab daim ntawv thov. Tus neeg muag khoom tsim nyog yuav tsum tsis yog tsuas yog hais tus nqi xwb, tab sis kuj tseem pab cov neeg yuav khoom sib tw cov khoom siv raw rau qhov kawg ntawm cov khoom refractory thiab lub cub tawg.
Rau cov tuam txhab refractory thiab cov tuam txhab kho cua sov, xaiv txoj cai tuag hlawv magnesia tuaj yeem txhim kho kev ruaj khov thiab ua haujlwm hauv ob sab phlu. Raws li cov neeg yuav khoom txuas ntxiv tsom mus rau lub neej kev pabcuam thiab kev tswj hwm tus nqi, siab - cov khoom siv magnesia zoo yuav nyob twj ywm ib feem tseem ceeb ntawm cov saw hlau refractory.
