Chrome Magnesite Cib

Magnesia-chrome cibyog ib yam khoom refractory nrog magnesium oxide (MgO) thiab chromium trioxide (Cr2O3) ua lub ntsiab Cheebtsam, periclase thiab spinel raws li lub ntsiab mineral Cheebtsam. Hom cib no muaj qhov siab refractoriness, kub siab zog, muaj zog corrosion kuj rau alkaline slag, zoo thermal stability, thiab tej yam adaptability rau acidic slag. Cov ntaub ntawv tseem ceeb rau kev tsim cov magnesia-chrome bricks yog sintered magnesia thiab chromite. Lub purity ntawm magnesia raw cov ntaub ntawv yuav tsum siab npaum li sai tau, thiab cov tshuaj muaj pes tsawg leeg ntawm chromite yog: Cr2O3: 30 ~ 45%, CaO: Tsawg dua los yog sib npaug rau 1.0 ~ 1.5%.

Txheej txheem ntau lawm:

Cov txheej txheem tsim tawm ntawm magnesia raug rho tawm haujlwm- chrome cib feem ntau zoo ib yam li cov magnesia cib. Txhawm rau tshem tawm cov nyhuv loosening tshwm sim los ntawm kev nthuav dav ntawm spinel vim yog cov tshuaj tiv thaiv ntawm MgO thiab Cr2O3, Al2O3 lossis hlau oxide thaum lub sij hawm firing txheej txheem ntawm lub cib, cov hluavtaws co-sintering khoom kuj siv tau los ua magnesia-chrome cib. Tsis tas li ntawd, muaj cov pob zeb uas tsis tau hlawv magnesia chrome, piv txwv li, tsis tau hlawv magnesia chrome cib ua ke nrog inorganic magnesium sulfate daws. Kev tsim cov txheej txheem ntawm cov tsis muaj hluav taws xob magnesia- chrome cib yog qhov yooj yim, tus nqi qis, thiab thermal stability yog qhov zoo, tab sis qhov kub thiab txias zog yog tsawg dua li ntawm cov cib raug rho tawm haujlwm. Thaum xyoo 1950s lig, ib qho li-hu ua "direct-bonded" magnesia-chrome cib tau tsim. Cov yam ntxwv ntawm cov cib no yog cov khoom siv ntshiab huv, kub kub kub, kev sib txuas ncaj qha ntawm cov theem kub xws li periclase thiab spinel, thiab qis melting theem xws li silicate yog faib rau hauv cov Islands tuaj. Yog li ntawd, lub siab kub ntawm lub cib yog ho txhim kho. Lub zog thiab Slag Resistance

Txoj kev ua cib los ntawm co- sib tsoo thiab calcining cov hmoov zoo nrog chrome ore-magnesia thiab ntxhib hais ntawm magnesia yog ib qho kev ntsuas zoo los tshem tawm cov nyhuv loosening. Piv nrog cov magnesia zoo tib yam -chrome cib, cov magnesia-chrome cib ua los ntawm txoj kev no muaj qis porosity thiab siab compressive zog, softening kub nyob rau hauv load thiab flexural zog. Lub magnesia-chrome cib ua los ntawm chrome ore-magnesite hmoov compacted thiab hluavtaws magnesia-chrome xuab zeb calcined ntawm qhov kub thiab txias muaj zoo slag kuj thiab siab - kub lub zog tshaj lwm yam magnesia- chrome cib.

Tsis tas li ntawd, tseem muaj fused - nrummagnesia-chrome cibtau los ntawm ncaj qha casting magnesia-chromium cov ntaub ntawv nyob rau hauv lub cub hluav taws xob, thiab fused magnesia-chromium cib ua los ntawm fused magnesia-chromium cov ntaub ntawv raws li lub cib- ua txheej txheem ua ke nrog magnesia- chrome cib.

Kev siv thaj chaw:

Magnesia- chrome cib feem ntau yog siv rau hauv kev lag luam metallurgical, xws li lub ru tsev ntawm qhib lub qhov cub, hluav taws xob rauv saum, refining furnaces thiab ntau yam tsis yog -ferrous hlau smelting furnaces. Qhov siab- qhov kub ntawm lub cub tawg ntawm phab ntsa ntawm lub qhov cub ultra- lub tshuab hluav taws xob siab yog ua los ntawm fused- nrum magnesia- chrome cib, qhov siab - thaj tsam yaig ntawm lub qhov cub refining yog ua los ntawm magnesia- chrome cib ua los ntawm cov khoom siv hluavtaws{9}, thiab non{10}}ferrous hlau flash smelting furnaces yog ua los ntawm fused- nrum magnesia-chrome cib thiab cov khoom siv hluavtaws- ua magnesia chrome cib. Tsis tas li ntawd, magnesia- chrome cib kuj tseem siv rau hauv thaj chaw tua hluav taws ntawm cov cement rotary kilns thiab cov regenerators ntawm iav kiln.