Ultrafine hmoov ua ke refractory castables yog castables uas muaj nyob rau hauv qis-cement series thiab cov cement-free series. Nws yog ib qho kev txhim kho tseem ceeb hauv kev tsim cov cuab yeej tshiab castables. Muaj ntau castable manufacturers hu ua micro hmoov tshuab.
1. Ultrafine hmoov ua ke castable
Ultrafine hmoov bonded castables yog tsim los ntawm lub hauv paus ntawm ladle castables. Lub hauv paus theoretical ntawm cov khoom xyaw castable, cov ntsiab lus xaiv thiab ntau yam ntawm cov ntaub ntawv, lub tswv yim ntawm kev ntxiv dag zog rau cov matrix, qhov tseem ceeb ntawm qhov loj me thiab nws cov duab, thiab qhov sib tov sib xyaw tsim, txhua yam zoo ib yam.
2. Qhov txawv
Qhov txawv yog tias ultrafine hmoov yog siv los ntawm aluminate phiab cement, uas kov yeej qhov tsis xws ntawm cov cement thiab siv qhov zoo ntawm ultrafine hmoov. Yog li ntawd, cov khoom castable ua ke nrog ultra-nplua hmoov tsis tsuas yog tswj cov yam ntxwv ntawm lub ladle refractory castable, tab sis kuj txhim kho cov slag kuj. Nws tseem kov yeej qhov tsis muaj zog ntawm cov castable uas muaj qhov sib piv ntawm lub zog me me ntawm qhov kub thiab nruab nrab kub, txhim kho cov cua sov thiab cov khoom tiv thaiv.
3. Combined refractories castables txawv ntawm cov castables zoo tib yam
Ultrafine hmoov ua ke castables txawv ntawm cov cement-free refractory castables. Kev ua haujlwm ntawm ultrafine hmoov tuaj yeem kov yeej qhov tshwm sim ntawm lub zog qis ntawm qhov nruab nrab kub. Yog tsis muaj qhov sib ntxiv ntawm SiO2 hmoov zoo hauv cov cement castables, cov hmoov qhuav lub zog yog tsawg. Muaj kev puas tsuaj rau kev siv tiag tiag.
Cov castables nyob rau hauv ultrafine hmoov tshuab ua kom muaj zog thaum qhov kub nce. Nws tseem tuaj yeem ua kom cov dej ntws ntawm cov castables nyob rau hauv chav tsev kub, ua rau kev tsim kho yooj yim dua. Ntxiv mus, nws tuaj yeem hnov mob nrog SiO2 nquag ntawm qhov nruab nrab thiab siab kub los ua mullite, thiab hnov mob nrog MgO los ua spinel, uas yog qhov zoo tshaj plaws rau kev ua haujlwm ntawm castable.
Tus nqi ntawm cov hmoov ultrafine ntxiv rau refractory castables tsis loj heev, feem ntau tsis ntau tshaj 3%, tab sis tom qab ntxiv, cov qauv network tuaj yeem khaws cia ntawm qhov kub siab dua. Nws kuj reacts nrog lwm yam minerals los tsim high-temperature theem, ua rau cov castables muaj zog thiab ntau resistant rau slag.
