nkhani

Utoto wa iron oxide ndi mtundu wofunikira wa zinthu zopanda chilengedwe zomwe gawo lake lalikulu ndi ma iron oxides. Utotowu ndi wachiwiri waukulu kwambiri wa zinthu zopanda chilengedwe pambuyo pa titanium dioxide ndi utoto wa zinthu zopanda chilengedwe womwe umakhala ndi mitundu yambiri, ndipo umagwiritsidwa ntchito kwambiri m'mafakitale komanso m'moyo watsiku ndi tsiku.

Mwa mankhwala, makamaka ali ndi magulu anayi: iron oxide wofiira, iron oxide wachikasu, iron oxide wakuda, ndi iron oxide bulauni. Pakati pawo, iron oxide wofiira ndiye wofala kwambiri, womwe umapanga pafupifupi 50% ya utoto wonse wa iron oxide. Kuphatikiza apo, micaceous iron oxide, yomwe imagwiritsidwa ntchito ngati utoto wotsutsana ndi dzimbiri, ndi magnetic iron oxide, pazinthu zojambulira maginito, imagweranso mkati mwa utoto wa iron oxide. Mitundu yosiyanasiyana ya utoto wa iron oxide imakhala ndi mitundu yosiyanasiyana chifukwa cha mitundu yosiyanasiyana ya okosijeni ya chitsulo. Mwachitsanzo, iron oxide wofiira, wochokera ku ferric oxide (Fe₂O₃), umawoneka wofiira; iron oxide wachikasu, wochokera ku hydrated ferric oxide (Fe₂O₃·H₂O), ndi wachikasu; ndipo iron oxide wakuda, womwe ndi magnetite (Fe₃O₄), umawoneka wakuda.​

Ponena za magwiridwe antchito, utoto wa iron oxide ndi wodabwitsa. Kukana kwawo kwa asidi ndi alkali ndikwabwino kwambiri. Ndi olimba kwambiri motsutsana ndi kuchuluka kosiyanasiyana kwa alkali ndi zipangizo zomangira zomwe zimagwiritsidwa ntchito kwambiri monga simenti ndi lime mortar, popanda kuyambitsa ufa wa simenti kapena kusokoneza mphamvu zawo. Komabe, pang'onopang'ono amasungunuka mu asidi amphamvu, makamaka akatenthedwa komanso kutentha kwambiri. Ponena za kukana kuwala ndi kutentha, utoto wamba wa iron oxide ndi wolimba mkati mwa kutentha kwina. Mwachitsanzo, chikasu cha iron oxide chimasanduka chofiira - mtundu ukapitirira 130°C, ndipo chitsulo oxide wofiira chimazama mpaka kufiira wakuda pamwamba pa 300°C. Komabe, mabizinesi ambiri tsopano apanga zinthu zomwe zimagwira ntchito bwino kwambiri zomwe zimatha kupirira kutentha kwakukulu. Kukana kwawo nyengo ndikwabwino kwambiri, popanda kukhudzidwa kwambiri ndi nyengo monga kuzizira, kutentha, kuuma, ndi chinyezi mumlengalenga, zomwe zimapangitsa kuti zikhale zodziwika bwino pa ntchito zakunja. Kuphatikiza apo, ndi olimba mu mpweya woipitsidwa, osasungunuka m'madzi, mafuta amchere, mafuta a masamba, ndi zinthu zambiri zachilengedwe, ndipo sawonetsa kulowa.​
Nthawi yotumizira: Meyi-07-2025