I-graphite enwebekayo ikhiqizwa yizinqubo ezimbili

I-graphite enwebekayo ikhiqizwa yizinqubo ezimbili: amakhemikhali kanye ne-electrochemical. Lezi zinqubo ezimbili zihlukile ngaphezu kwenqubo yoku-oxidation, ukuqeda i-acid, ukuwasha ngamanzi, ukuphelelwa amanzi emzimbeni, ukomisa nezinye izinqubo ziyafana. Ikhwalithi yemikhiqizo yabakhiqizi abaningi abasebenzisa indlela yamakhemikhali ingafinyelela inkomba echazwe ku-GB10688-89 standard "expandable graphite", futhi ihlangabezane nezidingo zezinto zokwakha zokukhiqizwa kweshidi le-graphite eliguquguqukayo elinobuningi kanye nezindinganiso zokuphakelwa kwamanye amazwe.

Kodwa ukukhiqizwa kwezidingo ezikhethekile zemikhiqizo eguquguqukayo ephansi (≤10%), okuqukethwe kwesulfure okuphansi (≤2%) kunzima, inqubo yokukhiqiza ayidluli. Ukuqinisa ukuphathwa kobuchwepheshe, ukutadisha inqubo yokuhlanganisa ngokucophelela, ukuqonda ubudlelwano phakathi kwamapharamitha enqubo nokusebenza komkhiqizo, nokukhiqiza i-graphite enwebekayo esezingeni elizinzile yizihluthulelo zokuthuthukisa ikhwalithi yemikhiqizo elandelayo. Isifinyezo se-Qingdao Furuite Graphite: indlela ye-electrochemical ngaphandle kwamanye ama-oxidants, i-graphite yemvelo ye-flake kanye ne-anode esiza ndawonye kwakha igumbi le-anode elicwiliswe ku-electrolyte egxilile ye-sulfuric acid, ngokusebenzisa ugesi oqondile noma ugesi we-pulse, i-oxidation ngemuva kwesikhathi esithile sokukhipha, ngemuva kokuwasha nokomisa yi-graphite enwebekayo. Isici esikhulu sale ndlela ukuthi izinga lokusabela kwe-graphite kanye nenkomba yokusebenza komkhiqizo kungalawulwa ngokulungisa amapharamitha kagesi nesikhathi sokusabela, ngokungcola okuncane, izindleko eziphansi, ikhwalithi ezinzile kanye nokusebenza okuhle kakhulu. Kuyaphuthuma ukuxazulula inkinga yokuxuba, ukuthuthukisa ukusebenza kahle nokunciphisa ukusetshenziswa kwamandla enkambisweni yokuhlanganisa.

Ngemva kokuqeda i-acid yizinqubo ezimbili ezingenhla, isilinganiso sobuningi be-sulfuric acid wetting kanye ne-adsorption yama-graphite interlamellar compounds sisengu-1:1, ukusetshenziswa kwe-intercalating agent kukhulu, kanti ukusetshenziswa kwamanzi okugeza kanye nokukhishwa kwendle kuphezulu. Futhi abakhiqizi abaningi abakaxazululi inkinga yokwelashwa kwamanzi amdaka, esimweni sokukhishwa kwemvelo, ukungcola kwemvelo kubi kakhulu, kuzovimbela intuthuko yemboni.