He ʻano kiʻekiʻe ke ʻano o ka Needle Coke i hoʻomohala ikaika ʻia i loko o nā mea kalapona. ʻO kona ʻano he mea paʻa porous me ka hina kālā a me ka luster metala. He ʻano kahe maopopo kona ʻano, me nā lua nui akā kakaikahi a me ke ʻano oval iki. ʻO ia ka mea maka no ka hana ʻana i nā huahana kalapona kiʻekiʻe e like me ka electrode mana kiʻekiʻe loa, ka mea kalapona kūikawā, ka fiber kalapona a me kāna mea i hui pū ʻia.
Wahi a nā mea maka like ʻole, hiki ke hoʻokaʻawale ʻia ke koka nila i ke koka nila ʻaila a me ke koka nila lanahu. ʻO ke koka nila i hana ʻia mai ke koena petroleum he koka nila ʻaila. ʻO ke koka nila i hana ʻia mai ka pitch tar lanahu a ʻo kāna ʻāpana he koka nila moʻo lanahu.
ʻO nā ʻōkuhi e hoʻopilikia i ka maikaʻi o ka nila coke e komo pū me ka ʻoiaʻiʻo maoli, ka nui o ka sulfur, ka nui o ka naikokene, ka mea lele, ka nui o ka lehu, ka coefficient hoʻonui wela, ka resistivity, ka nui o ka haʻalulu, a me nā mea ʻē aʻe. Ma muli o ke ʻano o ka ʻokoʻa o ka coefficient index kikoʻī, hiki ke hoʻokaʻawale ʻia ka nila coke i ka super grade (excellent grade), ka papa mua a me ka papa ʻelua.
ʻO nā ʻokoʻa hana ma waena o ka lanahu a me ka coke nila aila e komo pū me kēia mau mea.
1. Ma lalo o nā kūlana like, ʻoi aku ka maʻalahi o ke ʻano o ka electrode graphite i hana ʻia me ka coke nila aila ma mua o ka coke nila lanahu.
2. Ma hope o ka hana ʻana i nā huahana graphite, ʻoi aku ka nui o ka mānoanoa a me ka ikaika o nā huahana graphitized o ka coke nila moʻo aila ma mua o ka coke nila moʻo lanahu, ka mea i hoʻokumu ʻia e ka hoʻonui ʻana o ka coke nila moʻo lanahu i ka wā o ka graphitization.
3. I ka hoʻohana kikoʻī ʻana o ka electrode graphite, ʻo ka huahana graphitized o ka coke nila aila he haʻahaʻa ka coefficient o ka hoʻonui wela.
4. Ma ke ʻano o nā ʻōkuhi kino a me nā kemika o ka electrode graphite, ʻoi aku ka kiʻekiʻe o ke kū'ē kiko'ī o ka huahana graphitized o ka coke nila aila ma mua o ka huahana coke nila lanahu.
5. ʻO ka mea nui loa, ʻo ia ka hoʻonui ʻana o ka nila coke ana lanahu i ka wā e hiki ai ka mahana i 1500-2000 ℃ i ke kaʻina hana o ka graphitization wela kiʻekiʻe, no laila pono e kāohi pono ʻia ka piʻi ʻana o ka mahana, ʻaʻole ka piʻi wikiwiki ʻana o ka mahana, ʻoi aku ka maikaʻi ʻaʻole e hoʻohana i ke kaʻina hana graphitization moʻo, e hoʻohui i nā mea hoʻohui i ka coke ana lanahu e kāohi i kona hoʻonui ʻana, hiki ke hoʻemi ʻia ka wikiwiki o ka hoʻonui ʻana. Akā ʻoi aku ka paʻakikī o ka hoʻokō ʻana i ka nila coke aila.
6. ʻOi aku ka liʻiliʻi o ka coke nila aila calcined a me ka nui o nā ʻāpana liʻiliʻi, ʻoiai ʻoi aku ka liʻiliʻi o ka ʻike o ka coke nila lanahu a me ka nui o nā ʻāpana nui (35 - 40 mm), hiki ke hoʻokō i nā koi o ka nui o nā ʻāpana formula, akā lawe mai ia i nā pilikia i nā mea hoʻohana.
7. Wahi a ka hoʻolauna ʻana o ka Japan Petroleum Coke Company, ua manaʻoʻiʻo ʻia he maʻalahi ka haku mele ʻana o ka coke nila ʻaila ma mua o ka coke nila lanahu, no laila he maʻalahi ke kāohi i ka manawa coking a me ka hoʻomehana.
Mai nā mea i luna, ʻehā haʻahaʻa o ka coke nila aila: ke kaumaha kikoʻī wahaheʻe haʻahaʻa, ka ikaika haʻahaʻa, CTE haʻahaʻa, ke kū'ē kikoʻī haʻahaʻa, ʻo nā huahana graphite haʻahaʻa mua ʻelua, a ʻo nā huahana graphite ʻelua hope loa he maikaʻi. Ma keʻano holoʻokoʻa, ʻoi aku ka maikaʻi o nā helu hana o ka coke nila moʻo aila ma mua o ka coke nila moʻo lanahu, a ʻoi aku ka nui o ke koi no ka noi.
I kēia manawa, ʻo ka electrode graphite ka mākeke koi nui no ka nila coke, e helu ana ma kahi o 60% o ka hoʻohana holoʻokoʻa o ka nila coke, ʻoiai ʻo nā ʻoihana electrode he koi maopopo no ka nila coke, me ka ʻole o ke koi pilikino no ka maikaʻi. ʻOi aku ka ʻokoʻa o ke koi nila coke no ka mea anode pākahiko lithium ion, makemake ka mākeke kikohoʻe kiʻekiʻe i ka coke i kuke ʻia me ka ʻaila, a ʻoi aku ka hilinaʻi o ka mākeke pākahiko mana i ka coke me ka hana kumukūʻai kiʻekiʻe.
He paepae loea ko ka hana ʻana o ka nila Coke, no laila, he kakaikahi nā ʻoihana kūloko. I kēia manawa, ʻo nā ʻoihana hana nui o ka nila Coke ʻaila kūloko e komo pū ana me: Weifang Fumei New Energy, Shandong Jingyang, Shandong Yida, Jinzhou Petrochemical, Shandong Lianhua, Bora Biological, Weifang Fumei New Energy, Shandong Yiwei, Sinopec Jinling Petrochemical, Maoming Petrochemical, a pēlā aku. ʻO nā ʻoihana hana nui o ka nila Coke moʻo lanahu ʻo Baowu Carbon Material, Baotailong Technology, Anshan Open Carbon, Anshan Chemical, Fang Daxi Ke Mo, Shanxi Macro, Henan Open Carbon, Xuyang Group, Zaozhuang Revitalization, Ningxia Baichuan, Tangshan Dongri New Energy, Taiyuan Shengxu a pēlā aku.
Ka manawa hoʻouna: ʻOkakopa-19-2021