Refractory zipangizo laimu uvuni

Mng’anjo wa laimu amagawidwa m’mabwalo apakati ndi ng’anjo yozungulira. Malinga ndi gulu la zinthu zowotchedwa, pali mitsuko ya laimu ndi mitsuko ya ceramic. Imagawidwa mu preheating zone, zone kuwombera ndi kuzirala zone.

M’malo mwake, kutentha kogwiritsidwa ntchito kwa preheating zone pamwamba pa ng’anjo ya laimu sikuli kokwera kwambiri, koma zopangira zimatha kuyambitsa kuphulika kwakukulu panjerwa zowumbidwa zikatenthedwa, ndipo mpweya wa ng’anjo umayambitsa mankhwala oopsa. dzimbiri kwa njerwa refractory. Choncho, tiyenera kulabadira mphamvu, kachulukidwe, kuvala kukana ndi dzimbiri kukana za refractory njerwa.

Ngakhale preheating zone sikutanthauza kutentha mkulu wa njerwa refractory, zofunika zina katundu wa refractory njerwa ndi okhwima kwambiri. Mafakitale ambiri amagwiritsa ntchito njerwa zapamwamba za alumina ndi njerwa zadothi, zomwe zimakhala zosiyana.

calcination area. Malo opangira calcining ndi malo omwe mankhwala a njerwa zotsutsa zomwe zimagwiritsidwa ntchito mu ng’anjo ya laimu ndizolimba kwambiri, ndipo calcining zone ndiyenso siteji yomwe imakhala ndi kutentha kwambiri. Choncho samalani mukakhala ndi njerwa. Imakhala ndi kukana kwamphamvu kwamafuta, kukana dzimbiri komanso kukana kuvala. Gwiritsani ntchito njerwa zowirira kwambiri za aluminiyamu.

Malo owerengera poyamba ankagwiritsa ntchito njerwa zowundana za aluminiyamu. Komabe, m’zaka zaposachedwa, kugwiritsa ntchito njerwa za alkaline refractory kwakhala bwino, kogwirizana ndi gawo la gasi la laimu. Pakalipano, chifukwa cha zifukwa zamtengo wapatali, pali njerwa zambiri za alumina, koma njerwa za phosphate ndi phosphate composite zimathandizanso kwambiri. Zimatengera chizolowezi chogwiritsa ntchito komanso mtengo wagawo lililonse.

Komabe, ndizosatheka kugwiritsa ntchito njerwa zamchere m’malo owombera. M’madera omwe ali pafupi ndi preheating zone ndi zone yozizira, kukana kuvala ndikofunikira kwambiri kuposa kukana dzimbiri. Opanga ambiri amagwiritsabe ntchito njerwa zapamwamba za alumina zokanira bwino ndi kukana kuvala bwino komanso kutentha kwakukulu kwa refractory.

Ndiye pali malo ozizira. Chifukwa pamene quicklime ilowa m’dera lozizira, padzakhalabe kutentha kwambiri kumayenda uku ndi uku kumadera ozizira. Njerwa zokanira m’malo ozizira ziyeneranso kukhala ndi kukana kwa abrasion, kukana kuzizira kofulumira ndi kutentha, komanso kukana kupukuta. Koma pamene ng’anjo ya shaft ili ndi m’mimba mwake yaying’ono, opanga ambiri amasankhanso njerwa zadongo.