Nyob rau hauv cov txheej txheem ntau lawm ntawmtabular alumina, qhov teeb meem xim variegated yeej ib txwm yog ib qho tseem ceeb cuam tshuam rau qhov zoo thiab cov tsos ntawm cov khoom. Cov xim variegated no tsis tsuas yog cuam tshuam rau kev zoo nkauj ntawm cov khoom, tab sis kuj tseem tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov khoom.
1. Kev cuam tshuam ntawm cov khoom siv raw
Lub ntsiab raw khoom ntawm tabular corundum yog alumina, thiab nws purity thiab tshuaj muaj pes tsawg leeg muaj ib tug txiav txim lub luag hauj lwm nyob rau hauv cov xim ntawm cov khoom kawg. Ua ntej, yog tias alumina muaj cov kab ntawm cov khoom tsis huv xws li MgO thiab CuO, cov ntsiab lus no yuav hnov mob nrog alumina ntawm qhov kub thiab txias, ua rau cov khoom tshwm hauv cov xim sib txawv xws li lub teeb daj lossis lavender. Tsis tas li ntawd, yog tias cov ntsiab lus ntawm cov hlau hlau (xws li Fe2O3) nyob rau hauv cov khoom siv raw yog siab dhau los yog tsis zoo tshem tawm, impurities xws li dub thiab grey kuj tseem tshuav hauv cov khoom.
Ntxiv nrog rau cov ntsiab lus impurity, sulfur cov ntsiab lus ntawm cov khoom siv raw kuj yog qhov tseem ceeb cuam tshuam rau cov xim ntawm tabular corundum. Cov kev tshawb fawb tau pom tias thaum cov ntsiab lus ntawm sulfur nyob rau hauv alumina siab dhau lawm, sulfur ions yuav nkag mus rau hauv lub lattice ntawm alumina thaum lub sij hawm kub kub calcination, cuam tshuam rau kev loj hlob thiab kev hloov xim ntawm cov siv lead ua. Tshwj xeeb tshaj yog thaum cov siv lead ua loj loj, qhov cuam tshuam ntawm sulfur ions tseem ceeb dua, uas tuaj yeem yooj yim ua rau cov khoom tig daj.
2. Kev cuam tshuam ntawm cov cuab yeej tsim khoom thiab cov txheej txheem
Cov txheej txheem ntau lawm ntawm tabular alumina muaj ntau qhov sib txuas, suav nrog kev sib tsoo, molding, ziab, sintering, thiab lwm yam. Hauv cov kev sib txuas no, cov khoom siv tsis tu ncua thiab cov txheej txheem yuav ua kom paub impurities, yog li cuam tshuam rau cov xim ntawm cov khoom.
1. Cov khoom siv: Cov silos thiab cov khoom siv thauj khoom siv hauv kev tsim cov tabular corundum feem ntau yog ua los ntawm cov hlau, muaj cov hlau, titanium, npib tsib xee, chromium thiab lwm yam khoom. Yog tias cov khoom siv tsis ua haujlwm zoo thaum lub sijhawm tu, cov khib nyiab hlau xws li vuam taub hau thiab steel phaj scraps yuav raug muab sib xyaw rau hauv cov ntaub ntawv raw thiab nkag mus rau qhov kub-kub ntsug kiln. Nyob rau hauv qhov kub thiab txias, cov hlau khib nyiab no yuav gasify, ua hlau vapor uas muaj hlau, titanium, npib tsib xee, chromium thiab lwm yam khoom, uas yuav nkag mus rau hauv semi-molten tabular corundum npas, uas ua rau cov khoom tshwm nyob rau hauv dub grey, sawv liab los yog xiav thiab lwm yam xim.
2. Kev tswj hwm huab cua: Cov huab cua tis hauv qhov cub kuj muaj qhov cuam tshuam tseem ceeb ntawm cov xim ntawm tabular alumina . Nyob rau hauv ib qho chaw txo qis (xws li CO siab concentration), cov nyhuv ua ke ntawm ferrous ions thiab titanium ions yuav ua rau cov tabular corundum tshwm xiav lossis dub; Nyob rau hauv ib qho chaw oxidizing, cuam tshuam los ntawm hlau ions, chromium ions, thiab manganese ions, tabular corundum yuav tshwm liab liab los yog tsaus dua. Yog li ntawd, nws yog ib qho tseem ceeb rau kev tswj kom muaj nuj nqis ntawm huab cua hauv qhov cub kom txo tau cov khoom sib txawv.
3. Balling thev naus laus zis: Cov chaw tsim khoom hauv tsev feem ntau siv lub nruas balling tshuab rau kev sib tw, tab sis kev tswj tsis tau xws li kev ceev, dej ntxiv, thiab hmoov ntxiv thaum lub sij hawm cov txheej txheem balling tsis raug txaus, uas tuaj yeem yooj yim ua rau stratification thaum lub sij hawm balling. , yog li cuam tshuam cov xim uniformity ntawm cov khoom. Tsis tas li ntawd, txoj kev ziab cov spheres kuj tseem cuam tshuam rau cov xim ntawm cov khoom.
3. Kev cuam tshuam ntawm cov txheej txheem smelting
Qhov ntev ntawm smelting lub sij hawm thiab kev loj hlob ntawm cov txheej txheem kuj tseem ceeb yam tseem ceeb cuam tshuam cov xim ntawm tabular alumina. Lub sij hawm smelting tsis txaus lossis cov txheej txheem tsis paub qab hau tuaj yeem ua rau tsis ua tiav tshem tawm cov impurities hauv cov ntaub ntawv raw lossis tsis ua tiav daim ntawv alumina crystals, tawm hauv cov xim sib txawv hauv cov khoom. Tshwj xeeb tshaj yog thaum lub smelting kub tsis siab txaus los yog lub sij hawm rwb thaiv tsev tsis ntev txaus, kev loj hlob ntawm alumina crystals yog txwv tsis pub thiab muaj ntau raug rau cov xim hloov los ntawm impurity ntsiab.
