Man fetur coke wani abu ne mai ƙarfi da ake samu daga ragowar man fetur da kwalta ta hanyar coking. Launinsa baƙi ne kuma mai ramuka, babban sinadarin carbon ne, kuma abun da ke cikin tokar yana da ƙasa sosai, gabaɗaya ƙasa da 0.5%. Coke na man fetur wani nau'in carbon ne mai sauƙin graphitized, coke na man fetur yana da amfani iri-iri a masana'antar sinadarai, ƙarfe da sauran masana'antu, kuma shine babban kayan da ake amfani da shi wajen samar da kayayyakin graphite na wucin gadi da kayayyakin carbon na aluminum na electrolytic.
Dangane da yanayin zafi na maganin zafi, ana iya raba coke ɗin man fetur zuwa nau'i biyu: coke danye da kuma coke da aka yi da calcined. Tsohon coke ɗin man fetur da aka samu daga jinkirin coking yana ɗauke da abubuwa masu canzawa da yawa kuma yana da ƙarancin ƙarfin injina. Ana samun coke ɗin da aka yi da calcined ta hanyar calcination. Yawancin matatun mai a China suna samar da coke danye kawai, kuma yawancin ayyukan calcination ana yin su ne a masana'antar carbon.
Ana iya raba coke mai zuwa babban coke na sulfur (wanda ke ɗauke da fiye da kashi 1.5% na sulfur), matsakaiciyar coke na sulfur (wanda ke ɗauke da kashi 0.5%-1.5% na sulfur), da kuma ƙaramin coke na sulfur (wanda ke ɗauke da ƙasa da kashi 0.5% na sulfur) nau'i uku, electrodes na graphite da sauran samfuran graphite na wucin gadi galibi suna amfani da ƙarancin samar da coke na sulfur.
Allura coke wani nau'in coke ne mai inganci wanda ke da siffar fibrous a bayyane, musamman ƙarancin ƙarfin faɗaɗa zafi da sauƙin graphitization. Lokacin da toshe coke ya karye, ana iya raba shi zuwa ƙananan barbashi bisa ga yanayin (rabo na al'amari gabaɗaya yana sama da 1.75), kuma ana iya ganin tsarin anisotropic fibrous a ƙarƙashin na'urar hangen nesa mai haske, don haka ana kiransa allura coke.
Anisotropy na zahiri da na inji na coke ɗin allura a bayyane yake, kuma yana da kyakkyawan yanayin wutar lantarki da zafi daidai da tsayin axis na barbashi, kuma ƙimar faɗaɗa zafi yana da ƙasa. A lokacin ƙera extrusion, ana shirya dogon axis na yawancin barbashi bisa ga alkiblar extrusion. Saboda haka, coke ɗin allura shine babban kayan aiki don kera electrodes na graphite mai ƙarfi ko mai ƙarfi, waɗanda ke da ƙarancin juriya, ƙaramin adadin faɗaɗa zafi da kuma kyakkyawan juriyar girgizar zafi.
An raba allurar coke zuwa allurar mai da aka samar daga ragowar man fetur da kuma allurar kwal da aka samar daga kwalta mai tsafta.
Kwal ɗin kwal yana ɗaya daga cikin manyan samfuran sarrafa kwal ɗin kwal. Cakuda ne na nau'ikan hydrocarbons iri-iri, baƙi mai yawan ɗanko mai ɗanko ko mai ƙarfi a zafin ɗaki, ba tare da wurin narkewa mai tsayayye ba, ana laushi bayan zafi, sannan a narke, tare da yawan 1.25-1.35g/cm3. Dangane da wurin laushinsa, an raba shi zuwa ƙananan zafin jiki, matsakaici da babban zafin jiki nau'i uku. Yawan kwal ɗin kwal ɗin matsakaici shine 54-56% na kwal ɗin kwal. Haɗin kwal ɗin kwal yana da rikitarwa sosai, wanda ke da alaƙa da mallakar kwal ɗin kwal da abun ciki na heteroatoms, kuma tsarin aikin coking da yanayin sarrafa kwal ɗin yana shafar shi. Akwai fihirisa da yawa don siffanta halayen kwal ɗin kwal, kamar wurin laushi na kwal, toluene mara narkewa (TI), quinoline mara narkewa (QI), ƙimar coking da halayen rheological na kwal ɗin kwal.
Ana amfani da kwal a matsayin abin ɗaurewa da kuma abin da ke sa a yi amfani da shi a masana'antar carbon, kuma kaddarorinsa suna da tasiri sosai kan tsarin samarwa da ingancin kayayyakin carbon. Kwalta mai ɗaurewa gabaɗaya yana amfani da kwalta mai matsakaicin zafin jiki ko matsakaicin kwalta mai matsakaicin zafi tare da matsakaicin laushi, ƙimar coking mai yawa da kuma babban resin beta, kuma wakilin da ke ɗaurewa yakamata ya yi amfani da kwalta mai matsakaicin zafin jiki tare da ƙarancin laushi, ƙarancin QI da kyakkyawan rheology.
Lokacin Saƙo: Fabrairu-07-2025