Qhuav system thiab txheej txheem ntawm corundum cib lub cev

Lub tshuab ziab khaub ncaws yog qhov sib npaug ntawm cov xwm txheej ntawm corundum cib cib thaum ziab. Nws suav nrog lub sijhawm ziab, qhov kub thiab qhov txheeb ze ntawm qhov nkag mus thiab tawm qhov nruab nrab kom qhuav, noo noo ua ntej ziab thiab cov dej seem tom qab ziab ntawm corundum cib.

Tam sim no, cov lag luam loj thiab nruab nrab ntawm cov khoom siv refractory feem ntau siv cov tshuab ziab khaub ncaws kom qhuav lub cib, thiab lub sij hawm ziab yog qhia los ntawm lub sij hawm luv luv ntawm lub laub. Kev txiav txim siab ntawm lub sijhawm ncua sijhawm yuav tsum xav txog cov hauv qab no: qhov xwm txheej thiab cov qauv ntawm cov khoom siv, cov duab thiab qhov loj ntawm lub cib, qhov pib ya raws ntawm lub cev thiab cov kev xav tau rau cov dej seem ntawm qhov kawg ntawm ziab, qhov kub thiab txias, Cov av noo thiab ntws tus nqi ntawm qhov ziab nruab nrab, cov qauv ntawm lub tshuab ziab khaub ncaws, thiab lwm yam. Feem ntau, lub sij hawm trolley yog 15 ~ 45min, cov khoom loj thiab tshwj xeeb, ua ntej nkag mus rau lub tshuab ziab khaub ncaws, yuav tsum tau qhuav rau 24 ~ 48h thiab tom qab ntawd nkag mus rau hauv lub tshuab ziab khaub ncaws. tshuab ziab khaub ncaws kom tsis txhob qhib thiab tawg thaum ziab sai heev.

Cov txheej txheem siab hauv lub tshuab ziab khaub ncaws yuav tsum feem ntau siv lub siab ua haujlwm zoo los tiv thaiv kev nqus cua txias. Yog tias cov pa tso pa yog siv los ua qhov ziab kom qhuav, micro-negative siab lossis micro-zoo siab yuav tsum tau siv kom tsis txhob muaj pa taws thiab cuam tshuam rau kev noj qab haus huv.
Corundum cib

Qhov seem ntawm cov av noo ntawm corundum cib yog txiav txim siab raws li cov hauv qab no:

(1) Lub zog txhua yam ntawm corundum cib blanks yuav tsum muaj peev xwm ua tau raws li qhov xav tau ntawm kev thauj mus los thiab kev thauj khoom kiln;

(2) ua tau raws li cov kev xav tau ntawm cov cua kub ceev thaum ntxov ntawm kev tua hluav taws, uas yog, tsis muaj kev tawg vim overheating chav;

(3) Qhov loj thiab tuab ntawm corundum bricks, feem ntau yog cov seem ntawm cov khoom loj thiab zoo li cov khoom nrog cov duab nyuaj yuav tsum qis dua;

(4) Ntau hom kev tua hluav taws muaj qhov sib txawv.

Cov residual noo noo yog tsis tsim nyog, vim hais tias kom tawm qhov kawg ntawm cov dej noo, tsis tsuas yog rau lub tshuab ziab khaub ncaws yog uneconomic, thiab over-qhuav corundum cib vim brittleness rau thauj thiab kiln. Qhov yuav tsum tau muaj rau cov dej seem ntawm cov cib qhuav yog feem ntau: cov khoom siv av nplaum: 2.0% ~ 1.0%; Cov khoom siv aluminium siab: 2.0% ~ 1.0%; Siliceous khoom 0.5% ~ 1.0%; Magnesium cov khoom: tsawg dua 1.0%.

Lub tshuab ziab khaub ncaws rau cov khoom siv refractory muaj qhov tshuab ziab khaub ncaws, chamber dryers thiab lwm hom tshuab ziab khaub ncaws. Txoj kev ziab ziab yog muab faib ua: ntuj ziab, roj nruab nrab yuam kev ua kom qhuav, microwave ziab, hluav taws xob ziab thiab lwm yam.

Cov txheej txheem ziab tuaj yeem muab faib ua 3 theem:

Thawj theem yog theem tseem ceeb tshaj plaws hauv cov txheej txheem ziab khaub ncaws, theem no tso tawm ntau cov dej, nyob rau hauv tag nrho cov theem, cov kua ceev yog ib txwm tas li, yog li nws yog hu ua sib npaug ceev kom qhuav theem. Hauv theem no, evaporation ntawm cov dej tsuas yog tshwm sim ntawm lub cev, thiab qhov ziab nrawm yog sib npaug ntawm qhov nrawm ntawm cov dej dawb, yog li txhua yam uas cuam tshuam rau qhov evaporation ceev ntawm qhov chaw tuaj yeem cuam tshuam rau kev ziab kom qhuav. . Yog li ntawd, qhov ziab nrawm tsis muaj dab tsi ua nrog cov tuab thiab cov ntsiab lus ntawm cov dej ntawm corundum cib nyob rau hauv qhov ziab kom qhuav. Nws muaj feem xyuam rau qhov kub, av noo thiab ceev ntawm qhov ziab kom qhuav.

Qhov thib ob theem yog qhov qeeb ziab. Nrog rau qhov nce ntawm lub sij hawm ziab los yog txo cov dej cov ntsiab lus ntawm corundum cib, qhov zoo evaporation cheeb tsam ntawm corundum cib maj mam txo, thiab ziab ceev maj mam txo. Nyob rau lub sijhawm no, qhov ceev ntawm cov dej evaporation los ntawm qhov chaw tshaj qhov ceev ntawm diffusion los ntawm sab hauv ntawm lub cev mus rau saum npoo, yog li lub ziab ceev tsis tshua muaj cuam tshuam los ntawm qhov kub thiab txias, av noo thiab txav ceev ntawm huab cua. Qhov sib txawv ntawm cov dej mus rau saum npoo yog nyob ntawm cov ntsiab lus dej, cov qauv hauv lub cev, cov viscosity ntawm cov dej thiab cov khoom ntawm cov khoom. Feem ntau, cov dej ntws hauv cov dej hauv cov ntaub ntawv tsis muaj yas thiab cov khoom yas tsis muaj zog muaj zog dua. Cov khoom ntxhib muaj zog dua li cov khoom zoo, thiab qhov kub ntawm cov dej ntau dua, qhov yooj yim dua qhov diffusion.

Qhov thib peb theem yog tias qhov ziab nrawm yog maj mam ze rau xoom, thiab cov dej noo ntawm corundum cib lub cev tsis raug txo. Thaum qhov kub ntawm qhov kub ntawm huab cua tsawg dua 100 ° C, cov dej noo khaws cia hauv lub cev lub sijhawm no yog hu ua equilibrium noo noo. Qhov no ya raws yog nrees adsorbed los ntawm cov khoom hais. Tus nqi ntawm cov dej sib npaug yog nyob ntawm qhov xwm txheej, qhov loj me thiab qhov kub thiab qhov txheeb ze ntawm qhov ziab nruab nrab.

Qhov pom tseeb ntawm peb theem saum toj no, raws li tus nqi ntawm cov dej hauv lub cev, feem ntau rau cov txheej txheem yas ntawm kev tsim lub cev, peb theem yog pom tseeb dua, thiab rau cov txheej txheem ib nrab qhuav ntawm kev tsim lub cev, xws li multi-corundum cib, silicon cib thiab magnesium cib.