Pehea e koho ai i ke kiʻekiʻe kiʻekiʻe steelmaking recarburizer

Ma ke kaʻina hoʻoheheʻe ʻana, ma muli o ka hoʻopaʻa ʻana a i ʻole ka hoʻouka ʻana a me ka decarburization nui, i kekahi manawa ʻaʻole i hoʻokō ka ʻike kalapona i ke kila a i ʻole nā ​​​​mea i manaʻo ʻia.I kēia manawa, pono e hoʻohui ʻia ke kalapona i ke kila a i ʻole ka hao i hoʻoheheʻe ʻia.ʻO nā mea nui i hoʻohana pinepine ʻia no ka carbonization he anthracite pauka, carbonized puaʻa hao, electrode pauka, petroleum coke pauka, pitch coke, charcoal pauka a me ka pauka coke.ʻO nā koi no ka recarburizers ʻoi aku ka kiʻekiʻe o ke kalapona paʻa, ʻoi aku ka maikaʻi, a ʻoi aku ka haʻahaʻa o nā mea ʻino e like me ka lehu, ka mea volatile a me ka sulfur, ʻoi aku ka maikaʻi, i ʻole e hoʻohaumia i ke kila.

Hoʻohana ka hoʻoheheʻe ʻana i nā mea hoʻoheheʻe kiʻekiʻe ma hope o ka calcination kiʻekiʻe o ka petroleum coke me ka liʻiliʻi o nā haumia, ʻo ia ka loulou nui loa i ke kaʻina hana recarburization.Hoʻoholo ka maikaʻi o ka recarburizer i ka maikaʻi o ka hao i hoʻoheheʻe ʻia, a hoʻoholo pū inā hiki ke loaʻa kahi hopena graphitization maikaʻi.I ka pōkole, ʻo ka hoʻohaʻahaʻa ʻana i ka hao i hoʻoheheʻe ʻia a me ka recarburizers ke kuleana nui.

Ke hoʻoheheʻe ʻia ke kila ʻōpala a pau i loko o ka umu uila, ʻoi aku ka maikaʻi o ka recarburizer graphitized.Ma hope o ka mālama ʻana i ka graphitization kiʻekiʻe, hiki ke hoʻololi i nā ʻātoma kalapona mai ka hoʻonohonoho hoʻonohonoho mua ʻana i ka hoʻonohonoho flake, a hiki i ka flake graphite ke lilo i graphite-like.ʻO ke kumu maikaʻi loa o ke kumu, i mea e maʻalahi ai ka hoʻolaha ʻana i ka graphitization.No laila, pono mākou e koho i kahi recarburizer i loaʻa i ka graphitization kiʻekiʻe.Ma muli o ke kiʻekiʻe kiʻekiʻe wela graphitization lapaʻau, ka sulfur maʻiʻo ua ho'ēmi 'ia e ka pakele o SO2 kinoea.No laila, loaʻa i nā recarburizers kiʻekiʻe ka maʻi sulfur haʻahaʻa loa, ʻoi aku ka liʻiliʻi o w(s) ma mua o 0.05%, a ʻoi aku ka maikaʻi o nā w(s) ʻoi aku ka liʻiliʻi ma mua o 0.03%.I ka manawa like, he hōʻailona indirect hoʻi kēia e hoʻoholo ai inā ua hana ʻia ka mālama graphitization kiʻekiʻe a inā maikaʻi ka graphitization.Inā ʻaʻole i hana ʻia ka recarburizer i koho ʻia i ka mālama graphitization kiʻekiʻe, e hoʻemi nui ʻia ka hiki o ka nucleation o ka graphite, a e hoʻonāwaliwali ʻia ka hiki graphitization.ʻOiai inā hiki ke loaʻa ka nui o ke kalapona, ʻokoʻa loa nā hopena.
ʻO ka mea i kapa ʻia ʻo recarburizer e hoʻonui pono i ka ʻike kalapona i loko o ka hao i hoʻoheheʻe ʻia ma hope o ka hoʻohui ʻana, no laila ʻaʻole pono e haʻahaʻa loa ka ʻike kalapona paʻa o ka recarburizer, i ʻole e hoʻokō i kahi ʻano kalapona, pono e hoʻohui i kahi kalapona kiʻekiʻe. maʻiʻo.ʻO nā laʻana hou aʻe o ka recarburizer e hoʻonui i ka nui o nā mea maikaʻi ʻole i loko o ka recarburizer, i hiki ʻole ai i ka hao hoʻoheheʻe ke loaʻa nā pōmaikaʻi maikaʻi aʻe.
ʻO ka sulfur haʻahaʻa, ka nitrogen a me nā mea hydrogen ke kī i ka pale ʻana i nā pores nitrogen i ka hoʻolei ʻana, no laila ʻoi aku ka haʻahaʻa o ka naikokene o ka recarburizer, ʻoi aku ka maikaʻi.ʻO nā hōʻailona ʻē aʻe o ka recarburizer, e like me ka moisture, ka lehu, a me nā mea volatile, ʻo ka haʻahaʻa o ka nui o ke kalapona paʻa, ʻoi aku ka kiʻekiʻe o ke kalapona paʻa, no laila ʻoi aku ka kiʻekiʻe o ka nui o ke kalapona paʻa, ʻaʻole pono ka ʻike o kēia mau mea ʻino. kiʻekiʻe.
E like me nā ʻano hoʻoheheʻe ʻokoʻa, nā ʻano umu a me nā nui o nā kapuahi hoʻoheheʻe, he mea nui hoʻi e koho i ka nui o ka nui o ka recarburizer, hiki ke hoʻomaikaʻi maikaʻi i ka helu absorption a me ka absorption rate o ka hao i hoʻoheheʻe ʻia i ka recarburizer, a pale i ka pilikia o ka liʻiliʻi liʻiliʻi nui.Hoʻokumu ʻia e ka pau ʻana o ka oxidative o nā recarburizers.

ʻOi aku ka maikaʻi o kona nui: 100kg umu ma lalo o 10mm, 500kg umu ma lalo o 15mm, 1.5 tons umu ma lalo o 20mm, 20 ton umu ma lalo o 30mm.I ka hoʻoheheʻe ʻana o ka mea hoʻololi, ke hoʻohana ʻia ke kila kalapona kiʻekiʻe, hoʻohana ʻia kahi recarburizer me ka liʻiliʻi o nā haumia.ʻO nā koi no ka recarburizers no ka mea hoʻohuli kiʻekiʻe kiʻekiʻe he kalapona paʻa kiʻekiʻe, haʻahaʻa lehu, volatile a me ka sulfur, phosphorus, nitrogen a me nā mea haumia ʻē aʻe, maloʻo, maʻemaʻe, a me ka nui o ka nui.Kona kalapona C ≥ 96%, volatile mea ≤ 1.0%, S ≤ 0.5%, moisture ≤ 0.5%, mea nui 1-5mm.Inā ʻoi aku ka liʻiliʻi o ka nui o ka ʻāpana, ua maʻalahi ke puhi, a inā ʻoi aku ke koʻikoʻi, lana ia ma luna o ka ʻili o ke kila hoʻoheheʻe ʻia a ʻaʻole hiki ke komo maʻalahi e ke kila hoʻoheheʻe ʻia.No nā kapuahi induction, he 0.2-6mm ka nui o ka nui o ke kila a me nā mea gula ʻeleʻele ʻē aʻe he 1.4-9.5mm, ʻo ke kila kalapona kiʻekiʻe e pono ai ka nitrogen haʻahaʻa, a ʻo ka nui o ka nui o ka 0.5-5mm, a me nā mea ʻē aʻe. ke ʻano o ka umu ahi e honi i ka mea hana ʻO nā ʻano a me nā kikoʻī ʻē aʻe o ka hoʻoholo a me ke koho ʻana.