A matsayinsa na ɗaya daga cikin ƙarfe na farko kuma mafi amfani a duniya, ma'adinin ƙarfe muhimmin abu ne na albarkatun ƙasa don samar da ƙarfe da ƙarfe. A halin yanzu, albarkatun ma'adinin ƙarfe suna raguwa, wanda ke da alaƙa da babban rabo na ma'adinin da ba shi da laushi idan aka kwatanta da ma'adinin mai wadata, ma'adinin da ke da alaƙa da shi, da kuma abubuwan da suka haɗa da ma'adinin. Ana samun ƙarfe daga ma'adininsa, wanda aka sani da hematite ko magnetite, ta hanyar wani tsari da ake kira beneficiation na ma'adinin ƙarfe. Matakan da aka ɗauka wajen haƙo ƙarfe a masana'antu na iya bambanta dangane da yanayin ma'adinin da samfuran da ake so, amma tsarin gabaɗaya yawanci ya ƙunshi matakai masu zuwa:
Haƙar ma'adinai
Ana fara gano ma'adanin ƙarfe ta hanyar ayyukan bincike. Da zarar an sami ma'adanin da ya dace, ana cire ma'adanin daga ƙasa ta amfani da dabarun haƙar ma'adinai kamar haƙar ma'adinai a buɗe ko a ƙarƙashin ƙasa. Wannan matakin farko yana da mahimmanci domin yana shirya matakin haƙar ma'adinai na gaba.
Niƙawa da Niƙawa
Sannan a niƙa ma'adinan da aka cire zuwa ƙananan guntu-guntu don sauƙaƙe sarrafawa. Yawanci ana niƙa shi ta amfani da murƙushe muƙamuƙi ko murƙushewar mazugi, kuma ana niƙa shi ta amfani da injin niƙa mai ƙwayoyin cuta ko injin niƙa mai ƙwallo. Wannan tsari yana rage ma'adinan zuwa foda mai laushi, wanda ke sauƙaƙa sarrafawa da sarrafawa a matakai masu zuwa.
Rabuwar maganadisu
Ma'adinan ƙarfe galibi yana ɗauke da ƙazanta ko wasu ma'adanai waɗanda ke buƙatar a cire su kafin a yi amfani da su wajen samar da ƙarfe da ƙarfe. Rabawar maganadisu hanya ce da aka saba amfani da ita don raba ma'adanai masu maganadisu daga waɗanda ba su da maganadisu. Ana amfani da ƙarfin maganadisu, kamar mai raba maganadisu na Huate, don jawo hankali da raba ƙwayoyin ƙarfe daga gangue (kayayyakin da ba a so). Wannan matakin yana da matuƙar muhimmanci don inganta tsarkin ma'adinan.
Amfani
Mataki na gaba shine ƙara yawan sinadarin ma'adinai, inda manufar ita ce ƙara yawan sinadarin ta hanyar dabaru daban-daban. Wannan tsari na iya haɗawa da wankewa, tantancewa, da kuma hanyoyin raba nauyi don cire ƙazanta da inganta ingancin ma'adinan. Haka kuma, ƙarin sinadarin zai iya haɗawa da flotation, inda ake ƙara sinadarai a cikin ma'adinan don sa ƙwayoyin ƙarfe su yi iyo su rabu da sauran kayan.
Yin pelleting ko Sintering
Da zarar an yi amfani da ma'adinan, yana iya zama dole a haɗa ƙananan ƙwayoyin zuwa manyan don ingantaccen sarrafawa. Yin pelleting ya ƙunshi ƙirƙirar ƙananan ƙwayoyin zagaye ta hanyar jujjuya ma'adinan da ƙari kamar limestone, bentonite, ko dolomite. A gefe guda kuma, yin sintering ya ƙunshi dumama fines ɗin ma'adinan tare da fluxes da coke breeze don samar da taro mai kama da juna wanda aka sani da sinter. Waɗannan hanyoyin suna shirya ma'adinan don matakin cirewa na ƙarshe ta hanyar inganta halayensa na zahiri da halayen sarrafawa.
Narkewa
Mataki na ƙarshe a cikin aikin haƙowa shine narkewa, inda ake dumama ma'adinan ƙarfe a cikin tanderun fashewa tare da coke (mai amfani da carbon) da dutse mai laushi (wanda ke aiki azaman ruwa). Zafin mai zafi yana raba ma'adinan zuwa ƙarfe mai narkewa, wanda ke taruwa a ƙasan tanderun, da kuma slag, wanda ke shawagi a sama kuma ana cire shi. Sannan ana jefa ƙarfen mai narkewa cikin siffofi daban-daban, kamar ingots ko billets, sannan a ƙara sarrafa shi don samun samfuran ƙarfe da ƙarfe da ake so.
Yana da mahimmanci a lura cewa ma'adanan ƙarfe daban-daban da masana'antun sarrafawa na iya samun bambance-bambance a cikin takamaiman hanyoyin da ake amfani da su, amma ƙa'idodin gabaɗaya sun kasance iri ɗaya. Cire ƙarfe daga ma'adanan tsari ne mai rikitarwa kuma mai matakai da yawa wanda ke buƙatar kulawa da albarkatu da fasaha sosai. Haɗa kayan aiki na zamani kamar su Huate magnet separator yana haɓaka inganci da ingancin tsarin rabuwa, yana tabbatar da cewa samfurin ƙarshe ya cika ƙa'idodin da ake buƙata don samar da ƙarfe da ƙarfe.
Lokacin Saƙo: Yuli-08-2024