Mitundu ndi katundu wamba refractories

1. Kodi refractory ndi chiyani?

Zipangizo zokanira nthawi zambiri zimatanthawuza zazinthu zopanda zitsulo zomwe zimakana moto wopitilira 1580 ℃.Zimaphatikizapo miyala yachilengedwe ndi zinthu zosiyanasiyana zopangidwa kudzera munjira zina malinga ndi zolinga zina.Lili ndi zinthu zina zamakina otentha kwambiri komanso kukhazikika bwino kwa voliyumu.Ndizinthu zofunikira pamitundu yonse ya zida zotentha kwambiri.Ili ndi ntchito zambiri.

2, Mitundu ya refractories

1. Ma acid refractories nthawi zambiri amatanthauza zokanira zomwe zili ndi SiO2 zokulirapo kuposa 93%.Mbali yake yayikulu ndikuti imatha kukana kukokoloka kwa asidi slag pa kutentha kwakukulu, koma ndikosavuta kuchitapo kanthu ndi slag yamchere.Njerwa za silika ndi njerwa zadothi zimagwiritsidwa ntchito ngati zoletsa asidi.Njerwa ya silika ndi chinthu cha siliceous chomwe chili ndi 93% silicon oxide.Zopangira zomwe zimagwiritsidwa ntchito zimaphatikizapo njerwa za silika ndi zinyalala za silika.Imakhala ndi kukana kolimba kwa kukokoloka kwa asidi, kutentha kwakukulu kofewetsa, ndipo sikumachepa kapena kukulitsa pang'ono pambuyo powerengera mobwerezabwereza;Komabe, ndikosavuta kuphwanyidwa ndi alkaline slag ndipo imakhala yosasunthika bwino chifukwa cha kutentha.Njerwa ya silika imagwiritsidwa ntchito makamaka mu uvuni wa coke, ng'anjo yamagalasi, ng'anjo yachitsulo ya asidi ndi zida zina zotentha.Njerwa zadongo zimatengera dongo losasunthika ngati chinthu chachikulu ndipo chimakhala ndi aluminiyamu 30% ~ 46%.Ndiwopanda mphamvu ya acidic refractory yokhala ndi kugwedezeka kwabwino kwa kutentha komanso kukana kwa dzimbiri ku acidic slag.Amagwiritsidwa ntchito kwambiri.

2. Alkaline refractories nthawi zambiri amatanthawuza za refractories okhala ndi magnesium oxide kapena magnesium oxide ndi calcium oxide monga zigawo zikuluzikulu.Ma refractories awa ali ndi refractoriness kwambiri komanso kukana mwamphamvu kwa slag zamchere.Mwachitsanzo, njerwa ya magnesia, njerwa ya magnesia ya chrome, njerwa ya chrome magnesia, njerwa ya magnesia aluminiyamu, njerwa ya dolomite, njerwa ya forsterite, ndi zina zotero.

3. Aluminiyamu silicate refractories amatchula refractories ndi SiO2-Al2O3 monga chigawo chachikulu.Malinga ndi zomwe zili mu Al2O3, zimatha kugawidwa mu semi siliceous (Al2O3 15 ~ 30%), clayey (Al2O3 30 ~ 48%) ndi alumina wamkulu (Al2O3 wamkulu kuposa 48%).

4. Kusungunula ndi kuponyera refractory amatanthauza mankhwala refractory ndi mawonekedwe enaake kuponyedwa pambuyo kusungunula mtanda pa kutentha kwambiri ndi njira inayake.

5. Ma refractories osalowerera ndale amatanthawuza zotsutsa zomwe sizili zosavuta kuchita ndi acidic kapena alkaline slag pa kutentha kwakukulu, monga carbon refractories ndi chromium refractories.Ena amanenanso kuti ma aluminiyamu apamwamba kwambiri ndi awa.

6. Special refractories ndi zinthu zatsopano zopanda zitsulo zopangidwa pamaziko a zoumba zachikhalidwe ndi zokanira.

7. Amorphous refractory ndi osakaniza wopangidwa ndi refractory aggregate, ufa, binder kapena admixtures zina mu gawo lina, amene angagwiritsidwe ntchito mwachindunji kapena pambuyo yoyenera madzi kukonzekera.Refractory wopanda mawonekedwe ndi mtundu watsopano wa refractory wopanda calcination, ndipo kukana kwake kwamoto sikuchepera 1580 ℃.

3. Kodi ma refractories omwe amagwiritsidwa ntchito nthawi zambiri ndi ati?

Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo njerwa za silika, njerwa za silika, njerwa zadongo, njerwa zazikulu za alumina, njerwa za magnesia, etc.

Zida zapadera zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo njerwa za AZS, njerwa za corundum, njerwa za magnesium chromium zomangika, njerwa ya silicon carbide, njerwa ya silicon nitride yomangika ndi silicon carbide njerwa, nitride, silicide, sulfide, boride, carbide ndi zokana zina zopanda oxide;Calcium okusayidi, chromium okusayidi, alumina, magnesium okusayidi, beryllium okusayidi ndi zipangizo refractory.

Zida zomwe zimagwiritsidwa ntchito pafupipafupi komanso zodziwikiratu zimaphatikizapo zinthu za diatomite, zinthu za asbesitosi, bolodi lopaka mafuta, ndi zina.

Zinthu zomwe zimagwiritsidwa ntchito pafupipafupi ndi amorphous refractory zida monga zokonzera ng'anjo, zida zosagwira moto, zotayira zosagwira moto, mapulasitiki osagwira moto, matope osayaka moto, zida zosagwira moto, zopangira zosagwira moto, zokutira zosagwira moto, moto wopepuka. - zosagwira castables, mfuti matope, mavavu ceramic, etc.

4, Kodi katundu wakuthupi wa refractories ndi chiyani?

The katundu wa refractories monga structural katundu, matenthedwe katundu, makina katundu, ntchito katundu ndi ntchito katundu.

Mapangidwe a refractories amaphatikizapo porosity, kachulukidwe kachulukidwe, kuyamwa kwamadzi, kutulutsa mpweya, kugawa kukula kwa pore, etc.

The matenthedwe katundu wa refractories monga matenthedwe madutsidwe, matenthedwe kukulitsa coefficient, kutentha enieni, kutentha mphamvu, matenthedwe madutsidwe, matenthedwe emissivity, etc.

Makina opangira ma refractories amaphatikiza mphamvu zopondereza, kulimba kwamphamvu, mphamvu yosunthika, mphamvu ya torsional, kumeta ubweya mphamvu, mphamvu yamphamvu, kukana kuvala, kukwawa, mphamvu yomangira, zotanuka modulus, ndi zina zambiri.

Utumiki wa refractories umaphatikizapo kukana moto, kutentha kutentha kwa katundu, kusintha kwa mzere, kukana kutentha, kukana kwa slag, kukana kwa asidi, kukana kwa alkali, kukana kwa hydration, kukana kukokoloka kwa CO, conductivity, kukana kwa okosijeni, etc.

The workability wa zipangizo refractory monga kusasinthasintha, slump, fluidity, plasticity, cohesiveness, resilience, coagulability, hardability, etc.