Kev tsom xam ntawm qhov ua rau hlawv ntawmrefractory bricksnyob rau hauv ob chav chamber kilns
Kev ntsuas lub cev thiab tshuaj lom neeg ntawm cov thawj mullite cib txheej thiab cov seem cib txheej tau sim. Lub refractoriness ntawm tus thawj mullite cib txheej mus txog 1780 degree, lub load softening kub yog 1531 degree, thiab cov tshuaj muaj pes tsawg leeg kuj ua tau raws li qhov yuav tsum tau ntawm cov txheej txheem technical. Raws li kev siv ib txwm muaj, nws tuaj yeem ua tau raws li qhov yuav tsum tau siv.
Lub refractoriness ntawm mullite residual cib txheej tsuas yog 1390 degree, qhia tau hais tias muaj ntau cov ntsiab lus qis-melting hauv cov cib txheej. Los ntawm kev tshawb fawb thiab kev soj ntsuam ntawm cov qauv ntawm cov xuab zeb residual cib, nws ntseeg tau tias cov khoom qis-melting tsim los ntawm alkali hlau (xws li K₂O, Na₂O, thiab lwm yam) yog lub ntsiab ua rau kub-kub melting ntawm mullite cib.
K₂O thiab Na₂O cov khoom hauv cov khoom siv raw dolomite tsuas yog 0.01%. Cov ntsiab lus tshauv ntawm cov thee sib xyaw yog kwv yees li 12%. Cov ntsiab lus tshauv tau sim thiab tshuaj xyuas. Kev kuaj lub cev thiab tshuaj lom neeg ntawm cov slag nyob rau sab nraum qab ntawm lub rwb thaiv tsev txheej mullite cib tau teev tseg. Cov txiaj ntsig ntawm kev tshuaj xyuas tshuaj ntawm cov tshauv seem tom qab cov thee pulverized siv nyob rau hauv Wuxuan ob chav-chamber kiln ntawm Liugang tau teev tseg.
Nws tuaj yeem pom tias K₂O cov ntsiab lus hauv cov tshauv yog 2.25%, thiab cov ntsiab lus Na₂O yog 2.08%. Yog li ntawd, cov tshauv ntawm pulverized thee yog lub hauv paus ntsiab lus ntawm kev taw qhia ntawm alkali hlau ntsiab.
Raws li kev soj ntsuam ntawm qhov chaw, nws tau kwv yees tias muaj qhov qaij thaum siv rab phom txau, uas ua rau cov tshauv tom qab cov thee pulverized tau hlawv tag nrho kom ua raws li qhov chaw ntawm mullite cib. Qhov qis melting point theem nyob rau hauv cov tshauv melts thiab softens nyob rau hauv high kub, thiab tsis tu ncua nkag mus rau hauv lub sab hauv los ntawm lub pores nyob rau saum npoo ntawm lub mullite cib, nws thiaj li ua rau kev puas tsuaj ntawm mullite cib thiab redness ntawm lub plhaub ntawm lub cub tawg. Mullite refractory bricks ntxiv tau raug tshuaj xyuas, thiab tsis muaj qhov txawv txav tau pom nyob rau hauv qhov ntsuas kub ntawm qhov hnyav, qhov hloov pauv hloov pauv, tshuaj muaj pes tsawg leeg thiab lwm yam ntsuas.
Nws tau pom nyob rau ntawm qhov chaw uas No. 1 thiab No. 2 rab phom tsuag tau qaij, qhia tau hais tias cov phom phom tau crooked thiab cov nplaim hluav taws ncaj qha eroded cov ntaub ntawv refractory, ua rau cov ntaub ntawv refractory hlawv. Kev tshawb nrhiav pom tias lwm lub hauv paus flux ntawm Liugang kuj tseem muaj "qhov" cov duab nyob rau hauv cov ntaub ntawv refractory vim tias cov phom phom raug ntsia ze dhau, qhia tias cov ntaub ntawv refractory tau eroded.
Cov thee hmoov conveying kiv cua tsis yog qhov sib txawv ntawm cov kiv cua, thiab cua siab siab dua li cov txiv qaub kilns ntawm lwm cov hauv paus flux ntawm Liugang, uas ua rau hnyav hnyav hnav ntawm cov hmoov hmoov coj cov yeeb nkab ntawm rab phom tsuag thiab ua rau kub hnyiab. qhov no. Los ntawm cov xwm txheej saum toj no, nws tuaj yeem pom tias qhov kev teeb tsa tsis raug ntawm cov phom phom phom phom thiab qhov ncaj qha yaig ntawm cov nplaim taws tawm tsam phab ntsa ntawm lub qhov cub yog qhov ua rau hluav taws kub ntawm cov khoom siv refractory.
Cov thee hmoov conveying kiv cua tsis yog qhov sib txawv ntawm cov kiv cua, cua siab siab, thiab tus nqi ntws nrawm dhau, ua rau cov thee hmoov hmoov coj cov yeeb nkab hnav hauv tsawg dua 1 lub hlis, thiab ua rau cov hmoov av ntawm cov tshuaj tsuag ntau ntxiv. , uas yog lwm qhov laj thawj rau aggravating qhov hlawv ntawm cov ntaub ntawv refractory.
03. Cov nyhuv ntawm rectification yuav tsum tau ua raws li cov neeg siv khoom nruj me ntsis raws li cov duab kos kom ntseeg tau tias cov phom phom yog vertically parallel thiab downwards, thiab xyuas kom meej qhov kev ncua deb ntawm rab phom txau thiab cov phab ntsa ntawm lub cub tawg, thiaj li txo qhov kub ntawm cov ntaub ntawv refractory. . Nyob rau tib lub sijhawm, los ntawm kev txhim kho kev hloov pauv zaus ntawm cov thee hmoov conveying kiv cua thiab hloov kho cov kev ua haujlwm kiv cua, uas yog, txo cov kiv cua ua haujlwm zaus thaum lub sij hawm thim rov qab, thiab kho cov kiv cua ceev raws li lub tshuab hluav taws xob thaum lub sij hawm combustion. , yog li txhawm rau xyuas kom cov hmoov av thauj mus los thaum txo kev siv hluav taws xob. Ob chav chamber kiln tom qab rectification muaj kev ua haujlwm zoo, thiab tsis muaj cov khoom siv refractory hlawv tshwm sim.
04. Tom qab kev soj ntsuam thiab kev saib xyuas ntawm cov refractory cib ntawm ob chav C qauv kiln thiab zaus hloov pauv ntawm cov kiv cua conveying, tag nrho cov kiln tsis muaj cov khoom siv refractory hlawv tshwm sim, uas tag nrho ua pov thawj tias cov nyhuv rectification zoo.
(1) Kev puas tsuaj txawv txav ntawm cov phab ntsa rauv hauv qhov kub-kub ntawm cov txiv qaub kiln ua rau lub plhaub ntawm lub cub tawg tig liab. Qhov laj thawj tseem ceeb yog vim li cas cov cib mullite hauv cov txheej txheem ua haujlwm yog eroded thiab melted ntawm kub kub thaum lub sij hawm tsim khoom.
(2) Alkali hlau xws li K₂O thiab Na₂O hnov mob nrog mullite cib ntawm qhov kub thiab txias los tsim cov khoom qis qis xws li feldspar, uas txuas ntxiv corrode mullite cib. Cov phab ntsa ntawm lub cub tawg ua thinner tom qab melting, uas ua rau lub plhaub ntawm lub cub tawg tig liab ntawm qhov kub thiab txias.
(3) Lub hauv paus ntawm alkali hlau oxides hauv cov txiv qaub kiln yog cov hmoov tshauv ntawm cov thee sib xyaw. Vim yog cov yam ntxwv ntawm ob chav C qauv ntawm lub kiln, qhov txawv txav ntawm cov tshuaj tsuag phom kuj yuav ua rau cov hmoov tshauv nyob ze ntawm phab ntsa kawg thiab corrode lub cub tawg.
(4) Kev hloov pauv zaus ntawm cov kiv cua conveying yog qhov tsim nyog rau kev txo qis kev siv hluav taws xob, ua kom lub qhov cub ruaj khov, txo qhov kev yaig ntawm cov hmoov hmoov coj cov yeeb nkab, thiab ua kom nws lub neej ua haujlwm.
