Qhov loj me me yog hais txog qhov loj ntawm cov ntaub ntawv pib thiab feem ntau hais tawm ntawm cov sij hawm ntau qhov ntev.
Granular qib yog hais txog qhov sib txawv ntawm qhov ntau qhov me me ntawm cov ntaub ntawv, feem ntau hais raws li feem pua ntawm ob peb qib. Piv txwv, nyob hauv ib yam khoom siv, 2-0.5 hli nyiaj rau 10%, uas yog, qhov ntau qhov me me ntawm cov khoom siv rau hauv qhov no yog 2 hli, thiab qhov tsawg kawg yog qhov loj me me yog 0.5 hli. Cov ntsiab lus ntawm qib kawm no muaj txog 10% ntawm tag nrho cov khoom.
Lub mesh yog qhov loj ntawm mesh ntawm standard sieve, uas yog, tus naj npawb ntawm sieve qhov nyob rau hauv ntev ntawm lin (2.54 cm), raug xa mus rau raws li lub mesh. Piv txwv, ib qho 200-mesh sab cib txhais tau hais tias muaj 200 ntsej muag qhov rau hauv 2.54 m ntev npo, txhua tus muaj qhov luaj li 0.74 hli.
Dab tsi yog qhov tseem ceeb? Yuav ua li cas xaiv?
Qhov loj tshaj plaws tsuas yog siv rau hauv ciam av txhuam thiab av nkos ua ke yog hu ua cov khoom tseem ceeb. Kev xaiv ntawm cov ntsiab lus tseem ceeb yog los ntawm kev ua haujlwm ntawm cov khoom siv thiab cov khoom siv. Nyob rau hauv ib txwm muaj tshwm sim, cov khoom uas muaj cov thermal poob siab kuj muaj cov ntsiab lus loj dua; rau cov khoom nrog ntom thiab slag tsis kam, nws yog tsim nyog siv me me-qhov loj qhov me me.
Dab tsi yog qhov muaj? Muaj pes tsawg cov khoom xyaw?
Refractory cib av thiab cov khoom siv av nkos yog txheej txheem ntawm cov ntaub ntawv sib txawv ntawm cov khoom siv sib txawv thiab qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv.
Nws muaj ob txoj kev rau cov pob tawb refractory: volumetric method thiab gravimetric method.
Qhov hnyav batching txoj kev yog raws li qhov hnyav piv ntawm refractory cib ntaub ntawv. Txoj kev zoo ib yam, thiab nws cov yam ntxwv yog cov muaj kev siab tshaj, me yuam kev (tsis ntau tshaj 2%), thiab yooj yim kom paub tswj tsis tau. Cov khoom siv uas niaj hnub siv thiab cov khoom uas siv tam sim no muaj kev tuav cov phom, kev ntsuas uas tsis zoo, nyhav tsheb, kev siv hluav taws xob thiab cov duab digital photo.
Volumetric dosing yog siv cov ntim khoom xyaw. Ntau yam refractory cib cij pub tau siv los ua volumetric batching khoom, tab sis vim muaj yam xws li particle loj thiab cov av noo, qhov tseeb yog pluag (li 5% yuam kev). Yog li, nws feem ntau yog siv rau hauv txoj kev hnyav.
Cov kev txwv ntawm cov khoom noj khoom haus me me yuav tsum muaj raws li nram no:
(1) Nws yuav tsum muaj peev xwm xyuas kom meej tias muaj pes tsawg ntawm cov khoom noj, yog li ntawd nws yog ib qho yooj yim los kho nws cov nqi noj txhua lub sijhawm;
(2) Qhov tseeb ntawm cov khoom noj yuav tsum ua kom tau raws li qhov yuav tsum ua ntawm cov txheej txheem ntau lawm;
(3) Nws yuav tsum ua raws li lwm cov txheej txheem hauv kev tsim cov txheej txheem, xws li kev pub mis, kev ntsuas kev ntsuas, kev tswj tsis tau, kev ntub dej, kev thauj khoom thiab kev sib dhos siab;
(4) Cov khoom noj yuav tsum yooj yim, kev cog lus, txhim khu kev qha, thiab yoojyim tswj.
