1. Needle Coke: He Laʻana Maʻamau o ka Hoʻemi Haʻahaʻa a me ke Kiʻekiʻe ʻoiaʻiʻo
- Nā ʻAno Kūkulu: Hōʻike ka Needle coke i kahi ʻano fibrous a i ʻole elongated me nā pores elliptical elongated i hoʻonohonoho ʻia i ke ʻano i hoʻonohonoho ʻia. Hōʻike kēia ʻano i ka hiki ke hoʻopaʻa maikaʻi loa i ka wā o ka calcination.
- Ka emi ʻana o ka Calcination:
- He haʻahaʻa ka emi ʻana o ka nila coke, ma ke ʻano maʻamau mai 10% a 20%. Hoʻokō kona ʻano fibrous i ka emi ʻana ma o ka hoʻonohonoho hou ʻana o nā molekala a me ka pani ʻana o nā pore ma lalo o nā mahana kiʻekiʻe, ʻoiai ʻo ka hoʻonohonoho pono ʻana o nā pores e hōʻemi ana i ka hakahaka no ka emi ʻana o ka hana ʻole, a laila e hoʻohaʻahaʻa ana i ka nui o ka emi ʻana.
- No ka laʻana, ma ka calcination 1300°C, ʻo ka emi ʻana o ka volumetric o ka nila coke he hapalua wale nō ia o ka sponge coke, ma muli o kona hiki ke hoʻopuehu like i ke kaumaha wela.
- Ka nui maoli:
- He kiʻekiʻe ka nui maoli o ka nila coke, ma ke ʻano laulā e hiki ana i ka 2.10–2.15 g/cm³. Hōʻike kēia i kona kiʻekiʻe o ka graphitization a me ke ʻano crystalline paʻa, e pili pono ana i ka hoʻonohonoho pono ʻana o nā papa kalapona i loko o kona ʻano fibrous.
- Hōʻike nā haʻawina ʻo ka nui maoli o ka nila coke ma kahi o 5%–10% kiʻekiʻe aʻe ma mua o ka sponge coke, ma muli o ka emi ʻana o nā kīnā kūkulu a me ka paʻa ʻana o ka papa kalapona.
2. Sponge Coke: He Laʻana Maʻamau o ka Hoʻemi Kiʻekiʻe a me ka Density ʻoiaʻiʻo haʻahaʻa
- Nā ʻano kūkulu: He ʻano porous ko ka sponge coke, e like me ka huahuakai me nā pores i hoʻolaha like ʻole ʻia a like ʻole ka nui, nā paia ʻā, a me ka palupalu.
- Ka emi ʻana o ka Calcination:
- Hōʻike ka sponge coke i ka nui o ka emi ʻana, maʻamau mai 30% a 50%. ʻO kona ʻano porous i hoʻoponopono ʻole ʻia e hiolo ka pore i ka wā o ka calcination ma muli o ka hoʻokuʻu volatile a me ka hoʻonui ʻia o ke koʻikoʻi thermal, e alakaʻi ana i ka emi nui ʻana.
- No ka laʻana, ma ka calcination 1200°C, ʻoi aku ka emi ʻana o ka volumetric o ka sponge coke ma mua o 40%, ʻoi aku ka kiʻekiʻe ma mua o ka nila coke.
- Ka nui maoli:
- He haʻahaʻa loa ka nui maoli o ka sponge coke, ma waena o 1.90 a me 2.05 g/cm³. Ua pili kēia i ka nui o nā pores i koe a me ka hoʻonohonoho ʻole ʻia o nā papa kalapona i loko o kona ʻano, e hopena ana i nā hemahema crystalline he nui.
- Ke hoʻohālikelike ʻia me ka nila coke, ʻo ka nui maoli o ka sponge coke he 10%–15% haʻahaʻa paha, ma muli o ka lawa ʻole o ka densification.
3. Shot Coke: He Kūlana Waena me ka Hoʻemi Kaulike a me ka Density ʻoiaʻiʻo
- Nā ʻAno Kūkulu: ʻIke ʻia ka coke shot he poepoe a he pellet paha, me kahi ʻili paʻakikī a me kekahi mau pores, e hōʻike ana i kahi waena kūkulu ma waena o ka nila coke a me ka sponge coke.
- Ka emi ʻana o ka Calcination:
- ʻO ka maʻamau, ʻo ka nui o ka emi ʻana o ka coke pana mai 20% a 30%. Hoʻemi ʻia kona ʻano poepoe ma muli o ke kaomi ʻili i ka wā o ka calcination, akā ʻo ka porosity kūloko i kaupalena ʻia e kāohi ana i ka nui o ka emi ʻana.
- No ka laʻana, ma ka calcination 1250°C, ʻo ka emi ʻana o ka volumetric o ka shot coke he 25% paha, e hāʻule ana ma waena o ka needle coke a me ka sponge coke.
- Ka nui maoli:
- ʻO ka maʻamau, ʻo ka nui maoli o ka coke pana ma waena o 2.00 a me 2.10 g/cm³. ʻOi aku ka maikaʻi o kona densification structural ma mua o ka sponge coke akā ʻoi aku ka haʻahaʻa ma mua o ka nila coke, e hopena ana i kahi nui maoli waena.
- Ua hōʻike ʻia nā noiʻi ʻo ka nui maoli o ka coke pana ʻia ma kahi o 5% kiʻekiʻe aʻe ma mua o ka coke sponge akā he 3%–5% haʻahaʻa ma mua o ka coke nila.
Ka Nānā Holoʻokoʻa o nā Pilina Kūkulu-Waiwai
- ʻAno Hoʻemi:
- ʻO ke ʻano fibrous i hoʻonohonoho ʻia o ka nila coke e hōʻemi ana i nā ala emi ʻana i hoʻonohonoho ʻole ʻia, e hoʻohaʻahaʻa ana i kona wikiwiki emi ʻana; ʻo ke ʻano porous i hoʻonohonoho ʻole ʻia o ka sponge coke e alakaʻi ai i ka emi nui ʻana ma muli o ka hiolo ʻana o nā pore; ʻo ke ʻano poepoe o ka shot coke e hoʻokō i ka emi ʻana maʻamau ma o ka ʻilikai.
- ʻAno Hana ʻOiaʻiʻo:
- Pili pono ka nui maoli i ka hoʻonui ʻana o ke ʻano crystalline. ʻO ka hoʻonohonoho ʻana o ka papa kalapona i kauoha ʻia a me ka nui kīnā haʻahaʻa o ka nila coke e hopena i ka nui maoli; ʻo ke ʻano maʻamau ʻole a me nā pores koena o ka sponge coke e hōʻemi ana i ka nui maoli; hōʻike ka shot coke i nā waiwai waena.
- Nā Manaʻo Hoʻonui Hana:
- No nā noi e koi ana i ka emi haʻahaʻa a me ka nui maoli kiʻekiʻe (e laʻa, nā electrodes graphite mana kiʻekiʻe), makemake ʻia ka nila coke;
- No nā noi koʻikoʻi i ke kumukūʻai me nā koi hana haʻahaʻa (e laʻa, wahie), ʻoi aku ka kūpono o ka sponge coke a i ʻole ka shot coke;
- ʻO ka hoʻoponopono ʻana i ka mahana calcination (e laʻa, ma luna o 1300°C) a me ka wikiwiki o ka hoʻomehana (e laʻa, ma lalo o 50°C/min) hiki ke hoʻonui hou aku i ka nui maoli a me ka emi ʻana o ka nila coke.
Ka manawa hoʻouna: ʻApelila-09-2026