Chromite muhimmin abu ne wajen narkar da ferroalloys, bakin karfe da kuma ƙarfe masu daraja. Masana'antar ƙarfe tana amfani da kusan kashi 60% na chromium, wanda galibi ake amfani da shi wajen samar da ƙarfe mai ƙarfe, musamman bakin karfe. A lokaci guda, ana amfani da chromite sosai a masana'antar da ba ta da ƙarfi, masana'antar sinadarai da masana'antar haske.
Kayayyakin ma'adinai
Akwai nau'ikan ma'adanai sama da hamsin da ke ɗauke da chromium da ake samu a yanayi, amma ma'adanai masu ɗauke da chromium waɗanda ke da ƙimar masana'antu kawai su ne chromite, waɗanda su ne spinel (MgO, Al2O3), magnesia chromite (MgO, Cr2O3), da magnetite. (FeO, Fe2O3) da sauran mafita masu ƙarfi. A ka'ida, dabarar sinadaran chromite ita ce FeO, Cr2O3, wadda ke ɗauke da 68% Cr2O3, 32% FeO, matsakaiciyar maganadisu, yawan 4.1~4.7g/cm3, taurin Mohs 5.5~6.5, kuma bayyanar saman ta kama daga baƙi zuwa launin ruwan kasa mai duhu. Ma'adanai na Gangue galibi sun haɗa da olivine, serpentine da pyroxene, wani lokacin tare da ƙaramin adadin vanadium, nickel, cobalt da molybdenum group elements.
Fasahar Sarrafawa
Albarkatun chromite na ƙasar Sin ba su da kyau sosai, galibi suna da yawa a Tibet, Xinjiang, Mongolia ta ciki, Gansu da sauran larduna. Albarkatun chromite na ƙasashen waje galibi suna yaɗuwa ne a Afirka ta Kudu, Rasha, Brazil, Amurka da sauran ƙasashe. Chromite yana da halaye na yawan yawa, matsakaicin maganadisu da ƙananan ƙwayoyin lu'ulu'u. Gabaɗaya, ana rarrabe shi ta hanyar wanke ma'adinai, rabuwar maganadisu mai rauni, rabuwar maganadisu mai ƙarfi, rabuwar nauyi, flotation da sauran hanyoyin.
Hanyar wankewa
Ya dace da ma'adinin chromite mai kauri mai inganci mai yawan ma'adinin danye da kuma laka mai laushi kamar yumbu. Ana iya zaɓar samfuran da aka tattara ta hanyar wankewa cikin sauƙi.
Rabuwar maganadisu
Chromite yana da matsakaicin halayen maganadisu kuma ana iya raba shi ta hanyar rabuwar maganadisu mai ƙarfi ko busasshe. Magnetite ɗin da ke da alaƙa da shi ana fara raba shi ta hanyar rauni mai maganadisu, sannan a raba shi ta hanyar maganadisu ta hanyar CXJ ko CFLJ, mai raba maganadisu na farantin, mai raba maganadisu mai tsayi mai tsayi, da sauransu. Kayan aikin yana yin amfani da busasshe da rigar, kuma yana iya zaɓar samfuran tattarawa masu ƙwarewa. Hanyar rabuwar maganadisu tana da fa'idodin babban ƙarfin sarrafawa da alamun tsayayye.
Shafin aikace-aikacen chromite na Afirka ta Kudu
Rarraba manyan kafofin watsa labarai
Nauyin chromite na musamman shine 4.1~4.7g/cm3, kuma nauyin ma'adanai na gangue da silicate na ƙarfe gabaɗaya shine 2.7~3.2g/cm3. Amfani da bambancin yawan ma'adanai, spiral chute, jigging, girgiza tebur, spiral beneficiation Ana iya amfani da injina, centrifuges da sauran kayan aikin rarraba nauyi don rarrabawa. Wannan hanyar ta dace da chromite mai girman ƙwayar lu'ulu'u mai kauri, kuma ƙananan ƙwayoyin suna ɓacewa cikin sauƙi a cikin wutsiya.
Tafiye-tafiye
Chromite na iya amfani da fatty acid ko amine collectors don zaɓar ƙwararrun abubuwan da suka dace ta hanyar yin amfani da roughing da clearing a ƙarƙashin yanayin pH mai dacewa. Ya dace da chromites masu laushi da laushi.
Amfani da sinadarai
Ga wasu ma'adanai na chrome waɗanda ke da wahalar sarrafawa ta hanyar hanyoyin gyaran injiniya, ana amfani da tsarin haɗin sinadarai ko hanyar sinadarai guda ɗaya. Hanyoyin gyaran sinadarai sun haɗa da: cirewar zaɓaɓɓu, redox, rabuwar fise, cirewar acid sulfuric da chromic acid, ragewa da cirewar acid sulfuric, da sauransu.
Misalin fa'ida
Matsayin Cr2O3 da ke cikin wani nau'in chromite a Afirka ta Kudu shine 24.80%. Yana da wani yanki na sake zaɓar wutsiya a wurin. Girman samfurin shine raga -40 kuma girman ƙwayar yana da daidaito. Chromite yana nan a cikin ƙananan ƙwayoyin cuta da jikin da ke haɗe da juna. Babban ma'adanai na gangue Yana da olivine da pyroxene, tare da ƙaramin laka mai laushi. Dangane da yanayin samfuran ma'adinai, tsarin beneficiation an kafa shi azaman zobe mai faɗi ko tsaye mai zagaye mataki ɗaya.
Chromite mai laushi da ke cikin wutsiyoyin rabuwar nauyi a wurin yana ɗaukar farantin lebur ko zobe mai ƙarfi na tsaye, wanda zai iya zaɓar samfuran tattarawa masu inganci. Ma'adanai masu ɗauke da chromium a cikin wutsiyar maganadisu sune ƙananan ƙwayoyin halitta ko wasu ma'adanai masu mahimmanci waɗanda ke ɗauke da chromium sun sami kyakkyawan alamun amfana.
Lokacin Saƙo: Oktoba-12-2021