ʻO ke kaʻina hana hana kalapona he ʻōnaehana paʻa paʻa ʻia, ka hana ʻana i ka electrode graphite, nā mea kalapona kūikawā, carbon carbon, nā mea kalapona kiʻekiʻe kiʻekiʻe hou ʻaʻole hiki ke hoʻokaʻawale ʻia mai ka hoʻohana ʻana i nā mea maka, nā mea hana, nā ʻenehana, ka hoʻokele ʻana i nā kumu hana ʻehā a me nā waiwai pili. ʻenehana.
ʻO nā mea waiwai nā kumu nui e hoʻoholo ai i nāʻano kumu o nā mea kalapona, aʻo ka hana o nā mea waiwai e hoʻoholo i ka hana o nā mea kalapona i hanaʻia. No ka hana ʻana i nā electrodes graphite UHP a me HP, ʻo ka coke needle kiʻekiʻe ke koho mua, akā ʻo ka asphalt binder kiʻekiʻe, impregnating agent asphalt. Akā ʻo nā mea waiwai kiʻekiʻe wale nō, ka nele o nā lako, ʻenehana, nā kumu hoʻokele a me nā ʻenehana proprietary pili, ʻaʻole hiki ke hana i ka UHP kiʻekiʻe, HP graphite electrode.
Ke nānā nei kēia ʻatikala i nā hiʻohiʻona o ka coke needle kiʻekiʻe e wehewehe i kekahi mau manaʻo pilikino, no nā mea hana coke needle, nā mea hana electrode, nā keʻena noiʻi ʻepekema e kūkākūkā ai.
ʻOiai ʻo ka hana ʻoihana o ka coke needle ma Kina ma hope o nā ʻoihana ʻē aʻe, ua ulu wikiwiki ia i nā makahiki i hala iho nei a ua hoʻomaka i ke ʻano. I ka ʻōlelo o ka nui o ka hana, hiki iā ia ke hoʻokō pono i ka koi o ka coke needle no UHP a me HP graphite electrodes i hana ʻia e nā ʻoihana kalapona kūloko. Eia nō naʻe, aia kekahi ʻokoʻa i ka maikaʻi o ka coke needle i hoʻohālikelike ʻia me nā ʻoihana ʻē aʻe. Hoʻopili ka fluctuation o ka hana batch i ka noi no ka coke needle kiʻekiʻe i ka hana ʻana o ka nui UHP a me HP graphite electrode, ʻoiai ʻaʻohe mea kiʻekiʻe kiʻekiʻe ʻaʻohe coke nilala hui kiʻekiʻe e hiki ke hoʻokō i ka hana ʻana o ka hui graphite electrode.
ʻO nā ʻoihana kalapona ʻē aʻe e hana ana i nā kikoʻī nui UHP, HP graphite electrode ʻo ia ka koho mua loa o ka coke petroleum needle coke ma ke ʻano he coke kumu nui, hoʻohana pū nā ʻoihana kalapona Iapana i kekahi coke needle coke e like me ka mea maka, akā no ka φ aʻe. 600 mm kikoʻī o ka hana graphite electrode. I kēia manawa, ʻo ka coke needle ma Kina ka nui o ka coal series needle coke. ʻO ka hana ʻana o ke kiʻekiʻe kiʻekiʻe nui UHP graphite electrode e nā ʻoihana kalapona e hilinaʻi pinepine ʻia i ka lawe ʻia ʻana o ka petroleum series needle coke, ʻoi aku ka maikaʻi o ka hana ʻana o ka hui kiʻekiʻe me ka mea lawe mai ʻo Japanese Suishima oil series needle coke a me British HSP oil series needle coke e like me ka coke maka.
I kēia manawa, hoʻohālikelike ʻia ka coke needle i hana ʻia e nā ʻoihana like ʻole me nā kuhikuhi hana pāʻoihana o ka nilala coke haole e nā index hana maʻamau, e like me ka ʻona lehu, ka ʻoiaʻiʻo maoli, ka sulfur content, ka nitrogen content, ka māhele nui o ka nui, ka hoʻonui ʻana o ka wela a pēlā aku. ma. Eia nō naʻe, aia nō ka nele o nā māka like ʻole o ka hoʻohālikelike ʻana i ka coke needle i hoʻohālikelike ʻia me nā ʻāina ʻē. No laila, ʻaʻole hiki ke hoʻohālikelike ʻia ka hana ʻana o ka coke needle no nā "waiwai i hui pū ʻia", ʻaʻole hiki ke hōʻike i ke ʻano o ka coke needle premium kiʻekiʻe.
Ma waho aʻe o ka hoʻohālikelike hana maʻamau, pono e hoʻolohe nā ʻoihana kalapona i ke ʻano o ka coke needle, e like me ka hoʻokaʻawale ʻana o ka thermal expansion coefficient (CTE), ka ikaika o ka ʻāpana, anisotropy degree, ka hoʻonui ʻana i ka ʻikepili i ka mokuʻāina ʻole a me ka mokuʻāina ʻole. ka wela wela ma waena o ka hoʻonui a me ka ʻokiʻoki. No ka mea he mea nui loa kēia mau mea wela o ka coke needle i ka hoʻomalu ʻana i ke kaʻina hana graphitization i ke kaʻina hana o ka graphite electrode, ʻoiaʻiʻo, ʻaʻole i hoʻokaʻawale ʻia ka mana o nā waiwai wela o ka coke asphalt i hana ʻia ma hope o ka ʻai ʻana o ka binder a me ka impregnating agent asphalt.
1. Hoʻohālikelike i ka anisotropy o ka coke nila
Ultra high power graphite electrode production anisotropic degree performance analysis is the estimate of needle coke raw material quality or not a important analysis method, the size of the degree of anisotropy, of course, also have a influence on electrode production process, the degree of maikaʻi ka anisotropy o ka uila ma mua o ke degere anisotropy o ka mana awelika o ka electrode liʻiliʻi.
I kēia manawa, ʻoi aku ka nui o ka hana ʻana i ka coke needle lanahu ma Kina ma mua o ka coke needle petroleum. Ma muli o ke kumu kūʻai nui a me ke kumukūʻai o nā ʻoihana kalapona, paʻakikī ke hoʻohana ʻana i ka 100% coke needle home i ka hana ʻana o UHP electrode, ʻoiai e hoʻohui ana i kekahi hapa o ka coke petroleum calcted a me ka pauka graphite e hana i ka electrode. No laila, paʻakikī ke loiloi i ka anisotropy o ka coke needle home.
2. Linear a volumetric waiwai o ka nila coke
Hōʻike nui ʻia ka hana hoʻololi linear a volumetric o ka coke needle i ka hana graphite i hana ʻia e ka electrode. Me ka hoʻololi ʻana o ka mahana, e hana ʻia ka coke needle linear a me ka volumetric hoʻonui a me ka contraction i ka wā o ke kaʻina hana graphite e hoʻomehana ai, e pili pono ana i ka linear a me ka volumetric hoʻololi o ka electrode roasted billet i ke kaʻina graphite. ʻAʻole like kēia no ka hoʻohana ʻana i nā waiwai like ʻole o ka coke maka, nā māka like ʻole o ka hoʻololi coke needle. Eia kekahi, ʻokoʻa ke ʻano wela o ka linear a me ka leo o nā māka like ʻole o ka coke needle a me ka coke petroleum calcined. Ma ka haku ʻana i kēia ʻano o ka coke maka hiki iā mākou ke hoʻomalu maikaʻi a hoʻopaʻa i ka hana ʻana o ke kaʻina kemika graphite. ʻIke ʻia kēia ma ke kaʻina hana graphitization.
Hoʻomaka mua ka hoʻonui ʻana i ka laina i ka wā e hoʻomaka ai ka wela o ka coke needle aila, akā ʻo ka mahana ma ka hoʻomaka ʻana o ka laina laina e waiho mau ana ma hope o ka wela calcination kiʻekiʻe. Mai 1525 ℃ a 1725 ℃, hoʻomaka ka hoʻonui ʻana i ka laina, a he haiki ka pae wela o ka laina laina holoʻokoʻa, 200 ℃ wale nō. ʻOi aku ka nui o ka wela o ka laina holoʻokoʻa o ka coke ʻaila lohi maʻamau ma mua o ka coke needle, a ʻo ka coke needle lanahu ma waena o ʻelua, ʻoi aku ka nui ma mua o ka coke needle aila. Hōʻike nā hopena hoʻāʻo o Osaka Industrial Technology Test Institute ma Iapana e ʻoi aku ka maikaʻi o ka hana wela o ka coke, ʻoi aku ka nui o ka laina shrinkage wela wela, a hiki i 500 ~ 600 ℃ laina shrinkage wela wela, a haʻahaʻa ka hoʻomaka ʻana o ka wela o ka laina. , ma 1150 ~ 1200 ℃ ua hoʻomaka i ka hoʻohaʻahaʻa laina, ʻo ia hoʻi nā ʻano o ka coke petroleum lohi maʻamau.
ʻOi aku ka maikaʻi o nā waiwai wela a ʻoi aku ka nui o ka anisotropy o ka nila coke, ʻoi aku ka liʻiliʻi o ka pae wela o ka laina laina. ʻO kekahi kiʻekiʻe kiʻekiʻe o ka aila niila coke wale nō 100 ~ 150 ℃ linear contraction pae wela. He mea maikaʻi loa ia no nā ʻoihana kalapona e alakaʻi i ka hana graphitization ma hope o ka hoʻomaopopo ʻana i nā ʻano o ka hoʻonui laina, ka hoʻopaʻa ʻana a me ka hoʻonui hou ʻana o nā ʻano mea like ʻole coke, hiki ke pale aku i kekahi mau huahana ʻona maikaʻi ʻole i hoʻohana ʻia e ka hoʻohana ʻana i ke ʻano hoʻokolohua kuʻuna.
Ka manawa kau: Oct-08-2021