Ferrochrome, a i ʻoleferrochromium(FeCr) he ʻano ferroalloy, ʻo ia hoʻi, kahi huila o ka chromium a me ka hao, ma ke ʻano he 50 a 70% chromium ma ke kaupaona.

Hoʻokumu ʻia ka Ferrochrome e ka uila arc carbothermic reduction o chromite.ʻO ka hapa nui o nā huahana honua i hana ʻia ma ʻApelika Hema, Kazakhstan a me India, nona nā kumu waiwai chromite home.Ke piʻi mai nei nā helu mai Rusia a me Kina.Iecaianoaaiiuo o kila, o ka oi aku o ka kuhiliʻole kila me ka chromium maʻiʻo o 10 a 20%, o ka nui loa consumer a me ka noi nui o ferrochrome.

Hoʻohana

Ma luna o 80% o ka honuaferrochromehoʻohana ʻia i ka hana ʻana i ke kila kila.I ka makahiki 2006, ua hana ʻia he 28 Mt o ke kila kila.Pili ke kila kila i ka chromium no kona helehelena a me ke kū'ē i ka corrosion.ʻO ka maʻiʻo chrome maʻamau i loko o ke kila kila ma kahi o.18%.Hoʻohana ʻia e hoʻohui i ka chromium i ke kila kalapona.ʻO FeCr mai ʻApelika Hema, ʻike ʻia ʻo "charge chrome" a hana ʻia mai kahi Cr i loaʻa i ka ʻiʻa me ka haʻahaʻa kalapona haʻahaʻa, ka mea maʻamau i hoʻohana ʻia i ka hana kila kila.ʻO kahi ʻē aʻe, ʻo FeCr kalapona kiʻekiʻe i hana ʻia mai ka ʻeleʻele kiʻekiʻe i loaʻa ma Kazakhstan (ma waena o nā wahi ʻē aʻe) i hoʻohana pinepine ʻia i nā noi loea e like me nā kila ʻenekinia kahi kiʻekiʻe Cr/Fe ratio a me nā pae haʻahaʻa o nā mea ʻē aʻe (sulfur, phosphorus, titanium etc. .) He mea nui a hana ʻia nā metala i hoʻopau ʻia i loko o nā kapuahi uila liʻiliʻi i hoʻohālikelike ʻia me nā umu ahi nui.

Hana ʻia

ʻO ka hana ʻana o Ferrochrome kahi hana hoʻemi carbothermic e hana nei i nā wela kiʻekiʻe.Hoʻemi ʻia ka chromium ore (he oxide o Cr a me Fe) e ka lanahu a me ka coke e hana i ka hao-chromium alloy.Hiki ke hele mai ka wela no kēia pane mai nā ʻano like ʻole, akā ma ke ʻano maʻamau, mai ke aniani uila i hana ʻia ma waena o nā kihi o nā electrodes i lalo o ka umu a me ka umu ahi.Hana kēia arc i nā mahana ma kahi o 2,800 °C (5,070 °F).Ma ke kaʻina hoʻoheheʻe ʻana, hoʻopau ʻia ka nui o ka uila, e uku nui ana ka hana ʻana ma nā ʻāina i kiʻekiʻe nā kumukūʻai mana.

ʻO ka paʻi ʻana i ka mea mai ka umu ahi e hana mau ana.Ke hōʻiliʻili ʻia ka nui o ka ferrochrome i hoʻoheheʻe ʻia i loko o ka umu ahi, ua wili ʻia ka lua kīwī a wehe ʻia ke kahawai o ka metala i hoʻoheheʻe ʻia a me ka palapaʻa i lalo o kahi pā i loko o kahi anuanu a i ʻole ladle.Hoʻopaʻa ka Ferrochrome i nā hoʻoheheʻe nui i ʻoki ʻia no ke kūʻai ʻana a i ʻole ka hana hou ʻia.

Hoʻokaʻawale ʻia ka Ferrochrome e ka nui o ke kalapona a me ka chrome i loko.ʻO ka hapa nui o FeCr i hana ʻia he "charge chrome" mai ʻApelika Hema, me ke kalapona kiʻekiʻe ka lua o ka ʻāpana nui a ukali ʻia e nā ʻāpana liʻiliʻi o ke kalapona haʻahaʻa a me nā mea kalapona waena.