Njerwa Zosagwira Ntchito Zopangira Simenti Yozungulira: Mitundu ndi Ntchito

Ma uvuni ozungulira simentiNdi zida zofunika kwambiri popanga simenti, zomwe zimagwira ntchito pakakhala nyengo yovuta kwambiri—kutentha mpaka 1450°C, kuwonongeka kwa mankhwala kuchokera ku alkaline media ndi clinker, komanso kuwonongeka kosalekeza kwa makina. Kusankha njerwa zoyenera zopinga ndikofunikira kwambiri kuti zitsimikizire kuti ntchito ikuyenda bwino, kukulitsa nthawi yogwira ntchito ya uvuni, komanso kuchepetsa ndalama zosamalira. Pansipa pali mitundu yofunika kwambiri ya njerwa zopinga zomwe zimapangidwa kuti zigwiritsidwe ntchito pa khitchini zozungulira za simenti, iliyonse yopangidwira madera enaake ogwirira ntchito.

Njerwa Zapamwamba za AluminaNdi njerwa zofewa zomwe zimagwiritsidwa ntchito kwambiri m'mauvuni ozungulira simenti. Ndi alumina wokwanira 48% mpaka 75%, zimakhala ndi kukana kutentha kwambiri, kukhazikika bwino pa kutentha, komanso kukana kuwonongeka kwambiri. Zimayikidwa makamaka m'malo osatentha kwambiri monga malo olowera muuvuni, preheater, ndi ng'anjo yowola, komwe kutentha kumakhala kuyambira 800°C mpaka 1200°C. Kuchepa kwa porosity yawo kumalepheretsa kulowa kwa mpweya wowononga, zomwe zimapangitsa kuti zikhale zabwino kwambiri m'malo omwe ali ndi kuwonongeka pang'ono kwa mankhwala.

Njerwa za Spinel za Magnesia-AluminaNdi ofunikira kwambiri pamalo oyaka moto mu uvuni, komwe kutentha kumafika 1350°C mpaka 1450°C. Opangidwa ndi magnesium oxide ndi alumina, ali ndi mphamvu yolimbana ndi kutentha kwambiri ndipo amatha kupanga gawo loteteza akamachita ndi clinker, zomwe zimathandiza kuti clinker isagwedezeke. Poyerekeza ndi njerwa za magnesia-chrome, ali ndi mphamvu yolimbana ndi kuphulika kwa matope, zomwe zimapangitsa kuti zikhale zokhazikika kwambiri m'malo otentha kwambiri.

Njerwa za Magnesia-Chrome Zolumikizidwa MolunjikaAmagwira ntchito bwino kwambiri polimbana ndi dzimbiri la mankhwala. Amapangidwa kuchokera ku magnesite ndi chromite zapamwamba kwambiri, zomwe zimayikidwa mu calcium pa 1750-1850°C, ndipo ndi oyenera kugwiritsidwa ntchito pamalo oyaka moto komanso pamalo osinthira, pomwe alkaline ndi sulfate zimakokoloka kwambiri. Amapereka kutentha kofewa kwambiri komanso mphamvu yabwino yamakina, zomwe zimaonetsetsa kuti zimakhala zokhazikika kwa nthawi yayitali m'malo ovuta.

Njerwa Zosagonjetsedwa ndi AlkaliZapangidwira makina oyeretsera mpweya ndi chimphepo chamkuntho, komwe nthunzi ya alkali imakokoloka kwambiri. Ndi 25%-30% ya alumina ndi silika yoposa 65%, amapanga glaze yokhuthala kwambiri kuti ilepheretse kulowa kwa alkali, kuteteza kusweka ndi kuphulika kwa njerwa.

Kusankha njerwa zoyenera zopinga pogwiritsa ntchito madera a uvuni kumakhudza mwachindunji magwiridwe antchito ndi mtengo wa ntchito. Njerwa zathu zopinga zopinga zogwira ntchito bwino zimakwaniritsa miyezo yamakampani, ndi njira zomwe zakonzedwa mwamakonda zamitundu yosiyanasiyana ya uvuni. Lumikizanani nafe lero kuti mupeze zinthu zodalirika zopinga zomwe zimachepetsa nthawi yogwira ntchito ndikuwonjezera mphamvu yanu yopanga simenti.