Yintoni i-graphitized petroleum coke?

I-Graphitized Petroleum Coke: Izinto zeCarbon ezisebenza kakuhle ezifunyenwe kwiPetroleum Coke

I-graphitized petroleum coke yinto eyenziwe nge-carbon eyenziwe ngokusetyenziswa kwe-petroleum coke kunyango lwe-graphitization lobushushu obuphezulu (ngesiqhelo i-2,800°C–3,000°C). Isici sayo esiphambili sikwi-reorganization ebangelwa bubushushu obuphezulu yee-athomu ze-carbon kwi-petroleum coke ibe yi-crystalline structure esondele kwi-graphite yendalo, nto leyo ephucula kakhulu iipropati zayo zomzimba nezekhemikhali. Apha ngezantsi kukho uhlalutyo oluneenkcukacha:

I. Iimpawu eziphambili: Ukuphucula ukusebenza ngeGraphitization

1. Umxholo ophezulu weKhabhoni kunye nokungcola okuphantsi
   • Umxholo wekhabhoni udlula i-98%, umxholo wesalfure ungaphantsi kwe-<0.05%, kunye nothuthu kunye nezinto eziguquguqukayo eziphantsi kakhulu kune-petroleum coke eqhelekileyo. Olu coceko luphezulu lwenza ukuba ilungele i-metallurgy, iikhemikhali, kunye neminye imimandla.
2. Ukuqhuba kakuhle kombane kunye nobushushu
   • Ukwenziwa kwegrafiti kudala isakhiwo esiqhelekileyo esinamaleko, kunciphisa ukumelana nokufuduka kwee-electron. Ukumelana kwehla ukuya kwi-5–7 μΩ·m (vs. 8–12 μΩ·m kwi-coke eqhelekileyo), kusondela ekuqhubeni kwegrafiti yendalo.
3. Uzinzo oluphezulu lobushushu kunye nokungasebenzi kakuhle kweekhemikhali
   • Igcina uzinzo lwesakhiwo kumaqondo obushushu aphezulu (umz., >1,600°C kwiifeni zombane zokwenza intsimbi) kwaye iyamelana neentshukumo ezinee-asidi/ii-alkali. Ifanelekile kwizixhobo ezichasayo kunye nee-reactors ezishushu kakhulu.
4. Izinga eliphezulu lokufunxa kunye ne-Coefficient ephantsi yokwandiswa kobushushu (CTE)
   • Ulwakhiwo lwemingxuma (30–50% porosity) kunye ne-CTE ephantsi (~1.5–2.5×10⁻⁶/°C) zibalaseleyo kwizicelo ezifana nee-carburizer kunye nee-lubricants.

II. Inkqubo yoMveliso: Amanyathelo aPhambili kwiGraphitization yoBushushu obuPhezulu

1. Unyango lwangaphambi kokusetyenziswa kwezinto eziluhlaza
   • Khetha i-petroleum coke ekumgangatho ophezulu ene-sulfur ephantsi, enomphunga ophantsi (umz., i-needle coke okanye i-sponge coke evela kwi-delayed coking). Cwilisa, jonga, kwaye wenze ubungakanani bee-particle bube yi-homogenize (umz., 0–1 mm, 1–3 mm).
2. Ukwenziwa kweGraphitization yoBushushu obuphezulu
   • Indlela yesiqhelo ye-Acheson Furnace: Xuba i-petroleum coke kunye nee-graphitizing agents (umz., isanti ye-quartz) uze uyifudumeze ukuya kwi-2,800–3,000°C kwi-resistance oven iiyure ezingama-20–50. Ukusetyenziswa kwamandla aphezulu (6,000–8,000 kWh/ton) kodwa izixhobo ezivuthiweyo.
   • Indlela yesimanje yeFurnace eqhubekayo: Sebenzisa iifurnace ezithe nkqo okanye ezijikelezayo ezikhuselwe yigesi engafakwanga (N₂/Ar) ukuze ufudumale/upholise ngokukhawuleza (ixesha lomjikelo: iiyure ezingama-24–48). Ukusetyenziswa kwamandla kuncitshiswe ukuya kwi-3,500 kWh/ton, kunye nobunyulu obuphezulu (uthuthu <0.1%).
3. Ukucutshungulwa emva
   • I-coke epholileyo, etyumkileyo, nenegrafu efakwe kwiscreen. Faka i-surface coating (umz., i-pitch) okanye i-chemical vapor deposition (CVD) ukuphucula ukusebenza ngokweemfuno zomthengi.

III. Izicelo: "Izinto Ezisetyenziswa Ngamaxesha Onke" kwiMetallurgy kunye neeKhemikhali

1. Ishishini leMetallurgical
   • Ii-Electrode zeGraphite: Izinto eziphambili zokwenza intsimbi yesithando sombane, ezimelana namaqondo obushushu aphezulu kunye nemisinga yomoya ukuphucula ukusebenza kakuhle.
   • I-Carburizer: Inyusa ngokukhawuleza umxholo wekhabhoni (>90% yokufunxwa) kwi-ductile/grey iron casting ngelixa inciphisa isalfure (<0.05%) ukuphucula umgangatho we-casting.
   • Izinto ezivuselelayo: Zisetyenziswa kwizitena zekhabhoni okanye kwimixube yokugquma ukuze kufakwe iilinings zesithando somlilo ezishushu kakhulu ukuze kwandiswe ixesha lokusebenza.
2. Ushishino lweeKhemikhali
   • Imveliso yeSilicon Carbide: Isebenza njengomthombo wekhabhoni osabela kwiSiO₂ ukuvelisa ii-abrasives zesilicon carbide eziqinileyo nezingagugiyo.
   • Izixhobo zebhetri: I-coke enegrafiti enobukhulu obuncinci iphucula ukusebenza kwe-lithium-ion battery anode charge/discharge.
3. Ezinye izicelo
   • Izinto zokuthambisa: Ulwakhiwo oluneeleya kunye ne-coefficient ephantsi yokungqubana kwenza ukuba zisetyenziswe njengezinto zokuthambisa eziqinileyo koomatshini.
   • Izongezo zePlastiki/zeRabha: Ziphucula ukuhanjiswa kwamandla okanye iimpawu zokungashukumi.

IV. Ukuthelekiswa ne-Ordinary Petroleum Coke

V. Ixabiso leMarike kunye neeNdlela

Iqhutywa kukukhula kwezixhobo zokwenza intsimbi yesithando sombane kunye nezithuthi zamandla amatsha, imfuno ye-graphitized petroleum coke iyaqhubeka nokunyuka. Itekhnoloji yesithando somlilo esiqhubekayo sanamhlanje inciphisa iindleko zemveliso ngama-40–50% xa kuthelekiswa neendlela zemveli, nto leyo evumela ukwanda kwizicelo eziphakathi. Uphuhliso lwexesha elizayo, olufana nokunciphisa i-hydrogen kunye nokufudumeza nge-microwave, luthembisa iinkqubo zemveliso eziluhlaza nezisebenzayo ngakumbi.