High purity corundum cib yog dav siv los ua cov khoom siv hauv cov khoom seem ntawm cov khoom siv roj av, cov pa roj carbon monoxide, cov pa roj carbon dub reactor, cov kua txiv hmab txiv ntoo pov tseg thiab lwm cov khoom siv hluav taws xob vim nws zoo heev corrosion kuj, hnav tsis kam, siab kub zog, load softening kub, creep thiab Lwm yam khoom siv thermodynamic.
Nyob rau hauv cov txheej txheem ntawm kev tsim cov purity corundum cib, dawb fused corundum thiab phaj corundum yog cov khoom siv tseem ceeb. Lawv cov ntsiab lus tsawg ntawm impurities (xws li sio2), lub siab ntim thiab zoo thermodynamic cov zog ua rau kev ua haujlwm thiab cov kev ua haujlwm zoo los ntawm kev ua haujlwm ntawm gasifier thiab lwm yam rauv. Yog li twg ntawm ob cov ntaub ntawv raw yog qhov zoo tshaj plaws rau kev tsim cov purity corundum cib?
Ua ntej tshaj plaws, cov txheej txheem tsim khoom thiab cov khoom ntawm dawb fused corundum thiab phaj corundum yog qhov sib txawv, uas ua rau kev ua haujlwm thiab kev siv corundum cib muaj qee qhov sib txawv. Phaj corundum tau siv dav hauv kev tsim cov khoom siv hluav taws xob zoo rau steelmaking, xws li zawv zawg spout, Al2O3-MgO-C cib, castables thiab prefabricated qhov chaw. Rau lub sijhawm ntev, cov khoom siv raw ntawm siab purity corundum cib siv hauv kev lag luam uas tsis yog hlau, xws li gasifier thiab lwm yam khoom siv hluav taws xob, feem ntau yog dawb fused corundum. Nws yog feem ntau ntseeg tias qhov ntim siab ntawm fused dawb corundum tuaj yeem txhim kho qhov ntom ntawm cov khoom, thiab nws cov corrosion kuj zoo tuaj yeem txhim kho cov kev ua tau zoo ntawm cov khoom.
Thib ob, los ntawm cov nam ntawm lub zog sib piv, lub ntim ntom ntom nti ntawm lub corundum, thiab qhov porosity me ntsis ntawm qhov qhib tau nce siab dua, nce siab dua li 8.8 feem pua. Phaj corundum muaj qhov qhib porosity tsawg (tsuas yog 2.9 feem pua), tsis muaj qhov pom tseeb qhib porosity, tab sis feem ntau kaw porosity los yog intergranular porosity, qhov loj yog feem ntau tsawg dua 10μm, thiab sib npaug sib faib hauv cov khoom.
Tsis tas li ntawd, xav txog kev tua hluav taws ntawm slab corundum cib, nws tuaj yeem txiav txim siab tias qhov kev ua haujlwm zoo dua ntawm cov slab corundum yog qhov zoo rau qhov ntom ntawm qhov hluav taws kub, yog li cov cib uas nws cov aggregate yog ua los ntawm slab corundum tuaj yeem ua tiav sintered ntawm tus nqi sib tw. tsis tshua muaj kub, uas yog qhov zoo rau kev txuag nqi.
Phaj corundum tuaj yeem tsis tsuas yog txhim kho corrosion kuj, tab sis kuj txhim kho permeability kuj. Qhov tsis tshua muaj porosity, lub siab ntim ntom ntom thiab cov ceramic zoo yog cov laj thawj rau lub permeabentity zoo tiv thaiv ntawm lub cib uas muaj phaj corundum.
Tabular corundum cib tuaj yeem txhim kho kev ua haujlwm ntawm corundum cib, tshwj xeeb tshaj yog cov kev ua tau zoo, uas tuaj yeem ua tiav raws li hauv qab no:
1. Corundum cib uas muaj phaj corundum muaj kev ua haujlwm zoo dua sintering, uas tuaj yeem txhim kho qhov densification degree ntawm corundum cib;
2. Corundum cib uas muaj phaj corundum muaj qhov ntim siab thiab tsis tshua pom porosity;
3. Pure phaj corundum cib muaj chav tsev kub compressive zog, chav tsev kub dabtsi yog khoov zog thiab kub kub dabtsi yog khoov zog;
4. Phaj corundum cib muaj qhov zoo tshaj plaws hnav tsis kam;
5. Corundum cib uas muaj phaj corundum zoo dua li cov hluav taws xob dawb huv fused corundum cib hauv kev tiv thaiv kev yaig thiab nkag mus ntawm cov pa roj carbon monoxide slag thiab residue.
6. Lub thermal shock stability ntawm corundum cib tuaj yeem txhim kho los ntawm kev siv phaj corundum thiab fused dawb corundum ua aggregate.
7. Lub creep kuj ntawm cov ntshiab phaj corundum cib thiab ntshiab dawb fused corundum cib yog zoo dua li cov corundum cib siv lawv cov composite aggregate.
Yuav kom suav tau, kev ua tau zoo ntawm corundum cib siv phaj corundum raws li kev sib sau ua ke yog qhov zoo dua li qhov siv hluav taws xob dawb fused corundum ua aggregate, thiab qhov tseem ceeb, kev ua tau zoo ntawm corundum cib siv phaj rigidness yog zoo dua nyob rau hauv ntau yam.
