He mea nui ka Chromite no ka hoʻoheheʻe ʻana i nā ferroalloys, ke kila kila a me nā mea hao makamae. Hoʻohana ka ʻoihana metallurgical ma kahi o 60% o ka chromium, kahi i hoʻohana nui ʻia e hana i ke kila hao, ʻoiai ke kila kila. I ka manawa like, hoʻohana nui ʻia ka chromite i ka ʻoihana refractory, ka ʻoihana kemika a me ka ʻoihana māmā.
Nā waiwai o ka ʻoaka
Aia ma mua o kanalima ʻano o nā minelala i loaʻa i ka chromium i loaʻa i ke kūlohelohe, akā ʻo nā minelala wale nō i loaʻa i ka chromium me ka waiwai ʻoihana ʻo ia ka chromite, ʻo ia hoʻi ka spinel (MgO, Al2O3), magnesia chromite (MgO, Cr2O3), a me ka magnetite. (FeO, Fe2O3) a me nā hopena paʻa ʻē aʻe. Ma ke kumumanaʻo, ʻo ke ʻano kemika o ka chromite ʻo FeO, Cr2O3, nona ka 68% Cr2O3, 32% FeO, magnetic waena, density 4.1 ~ 4.7g / cm3, Mohs hardness 5.5 ~ 6.5, a ʻo ke ʻano o ka ʻili mai ka ʻeleʻele a i ka ʻeleʻele ʻeleʻele. ʻO nā minelala Gangue ka mea nui o ka olivine, serpentine a me pyroxene, i kekahi manawa me kahi liʻiliʻi o nā mea hui vanadium, nickel, cobalt a me molybdenum.
ʻenehana hana
ʻAʻole maikaʻi loa nā kumuwaiwai chromite o Kina, ʻoi aku ka nui ma Tibet, Xinjiang, Inner Mongolia, Gansu a me nā panalāʻau ʻē aʻe. Hoʻolaha nui ʻia nā kumuwaiwai chromite haole ma ʻApelika Hema, Rusia, Brazil, ʻAmelika Hui Pū ʻIa a me nā ʻāina ʻē aʻe. Loaʻa iā Chromite nā ʻano o ke kiʻekiʻe o ka density, ka magnetism waena a me nā ʻāpana kristal coarse. Ma ke ʻano laulā, ua hoʻokaʻawale ʻia e ka holoi ʻana o ka ore, ka hoʻokaʻawale magnetic nāwaliwali, ka hoʻokaʻawale magnetic ikaika waena, ka hoʻokaʻawale umekaumaha, ka flotation a me nā kaʻina hana ʻē aʻe.
ʻAno holoi
He kūpono ia no ka ʻaila chromite ʻano nui me ke kiʻekiʻe o ka ʻaila maka a me ka lepo maikaʻi e like me ka pālolo e like me nā mea haumia. Hiki ke koho ʻia nā huahana coarse concentrate kūpono ma ka holoi maʻalahi.
Ka hoʻokaʻawale magnetic
Loaʻa i ka Chromite nā waiwai magnetic waena a hiki ke hoʻokaʻawale ʻia e ka hoʻokaʻawale magnetic ikaika maloʻo a pulu paha. Hoʻokaʻawale mua ʻia ka magnetite pili e ka magnetic nāwaliwali, a laila hoʻokaʻawale ʻia me ka magnetic e CXJ a i ʻole CFLJ, ka mea hoʻokaʻawale magnetic plate, ka mea hoʻokaʻawale magnetic gradient kiʻekiʻe apo vertical, a pēlā aku. Hana ka lako i ka beneficiation maloʻo a pulu, a hiki ke koho i nā huahana concentrate kūpono. Loaʻa i ke ʻano hoʻokaʻawale magnetic nā pono o ka hiki ke hana nui a me nā hōʻailona paʻa.
Kahua noi chromite ʻApelika Hema
Ka hoʻokaʻawale ʻana i nā pāpaho kaumaha
ʻO ke kaumaha kikoʻī o ka chromite he 4.1 ~ 4.7g / cm3, a ʻo ke kaumaha kikoʻī o nā minelala gangue a me ka silicate hao e pili ana he 2.7 ~ 3.2g / cm3. Ma ka hoʻohana ʻana i ka ʻokoʻa o ka nui ma waena o nā minelala, hiki ke hoʻohana ʻia ka spiral chute, jigging, shaking table, spiral beneficiation i nā mīkini, centrifuges a me nā lako hoʻokaʻawale kaumaha ʻē aʻe no ka hoʻokaʻawale ʻana. He kūpono kēia ʻano hana no ka chromite me ka nui o ka palaoa kristal coarser, a nalowale maʻalahi nā ʻāpana liʻiliʻi i loko o nā tailings.
Lana ʻana
Hiki i ka Chromite ke hoʻohana i ka waikawa momona a i ʻole nā mea hōʻiliʻili amine e koho i nā mea i hoʻohuihui kūpono ʻia ma o nā kaʻina hana roughing a me sweeping ma lalo o nā kūlana pH kūpono. He kūpono ia no nā chromites maikaʻi a me nā chromites maikaʻi.
Hoʻomaikaʻi kemika
No kekahi mau ʻāpana chrome i paʻakikī ke hana ʻia e nā ʻano hana hoʻomaikaʻi mechanical, ua hoʻohana ʻia ke kaʻina hana hoʻomaikaʻi-kemika i hui pū ʻia a i ʻole ke ʻano kemika hoʻokahi. ʻO nā ʻano hana hoʻomaikaʻi kemika e pili ana i: ka leaching koho, redox, ka hoʻokaʻawale fuse, ka leaching sulfuric acid a me ka chromic acid, ka hoʻemi a me ka leaching sulfuric acid, a pēlā aku.
Laʻana hoʻopōmaikaʻi
ʻO ke ʻano o Cr2O3 i loko o kahi huelo chromite ma ʻApelika Hema he 24.80%. He koho hou ʻana ia o nā huelo ma kahi. ʻO ka nui o ka laʻana he -40 mesh a he ʻano like ka nui o ka ʻāpana. Aia ka chromite i loko o nā ʻāpana maikaʻi a me nā kino pili a me nā hoʻokomo. ʻO nā minelala gangue nui he olivine a me pyroxene, me kahi liʻiliʻi o ka lepo maikaʻi. Wahi a ke ʻano o nā laʻana ore, ua hoʻokumu ʻia ke kaʻina hana beneficiation ma ke ʻano he apo pālahalaha a kū pololei paha i hoʻokahi ʻanuʻu roughing.
ʻO ka chromite maikaʻi i loko o nā tailings o ka hoʻokaʻawale umekaumaha chute ma kahi e hoʻohana ai i kahi papa pālahalaha a i ʻole ke apo kū pololei e hoʻokaʻawale i nā huahana hoʻohuihui kūpono. ʻO nā minelala i loaʻa ka chromium i loko o ka huelo magnetic he mau hoʻokomo maikaʻi a i ʻole nā minelala waiwai ʻole ʻē aʻe i loaʻa ka chromium i loaʻa nā hōʻailona maikaʻi.
Ka manawa hoʻouna: ʻOkakopa-12-2021