Tsarin samar da ƙarfe na sponji yana da sabon dabaru da aka yawaita amfani da shi a cikin ƙarfe don samar da ƙarfe a cikin yanayi mai rage zafi da sinadarai ba tare da narke ba, musamman don amfani da shi wajen ƙera ƙarfe. Karfen sponji, wanda kuma aka sani da ƙarfe mai rage kai tsaye (DRI), samfurin ƙarfe ne mai poro, wanda aka samo ta hanyar rage ƙarfe daga ma'adanai ta amfani da abubuwa masu ragewa iri-iri. Ga yadda tsarin yake aiki:
Karfe mai ruwan sama ana samar da shi ta hanyoyi masu zuwaaike kai tsayeAna nufin rashin ƙarfe yana raguwa zuwa ƙarfe mai metal a ƙananan zafin jiki fiye da inda zai narkar (800–1200°C). Akwai hanyoyi guda biyu da aka fi amfani da su:
A. Tsarin Konewar Kohl:
Mabuɗin amsa:
Fe₂O₃ + CO → Fe + CO₂
Fe₂O₃ + C → Fe + CO + CO₂
B. Tsarin Bisa Gas:
Tsarin samar da ƙarfe mai fanko yana da inganci sosai kuma yana da kyakkyawan tasiri ga muhalli wajen samar da ƙarfe mai ƙarfi ba tare da narkewa ba. Ta hanyar amfani da kayan ragewa kamar kwal, ko iskar gas ta halitta, ana cire oxygen daga ma'adinan ƙarfe don samar da ƙarfe mai rami wanda ya dace da ƙarin aikace-aikacen ƙera ƙarfe. Wannan tsari yana ba da mafita mai ɗorewa, musamman ga ƙasashen da ke rashin tanadi na kwal na cokiya.
Shanghai Zenith Mineral Co., Ltd. shine mashahurin farko na kayan aikin karya da numa a China. Tare da fiye da shekaru 30 na kwarewa a fannin kayan aikin hakar ma'adanai, Zenith ta gina ƙwararren suna wajen bayar da ingantattun masu karya, mills, na'urorin yin yashi, da kayan aikin tsarin ma'adanai ga abokan ciniki a ko'ina cikin duniya.
An kafa rassan hukumar a Shanghai, China, Zenith yana haɗa bincike, samarwa, sayarwa, da sabis, yana ba da cikakken bayani ga masana'antu na tarin kaya, hakar ma'adanai, da ƙarin aikin mineral. Ana amfani da kayan aikin sa sosai a fannin karafa, ginin, injiniya na sinadarai, da kuma kare muhalli.
Muna bada gudummawa ga sabbin abubuwa da gamsuwar abokan ciniki, Shanghai Zenith na ci gaba da samun ci gaba a cikin masana'antu masu wayo da samar da kayayyaki masu inganci, tana ba da ingantaccen kayan aiki da cikakken sabis bayan-tallace-tallace don taimaka wa kwastomomi su cimma ayyuka masu inganci da dorewa.
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