Calcined coke yog ib hom carburizer thiab roj av coke ntawm ntau yam kev qhia.
Cov lus qhia tseem ceeb ntawm cov khoom graphite yog ￠150-￠1578 thiab lwm yam qauv. Nws yog qhov tseem ceeb rau cov lag luam hlau thiab hlau, cov lag luam silicon polysilicon, cov lag luam emery, kev lag luam khoom siv aerospace thiab lwm yam khoom.
1: Roj av coke
Petroleum coke yog cov khoom siv roj av dub lossis xim grey tsaus uas muaj lub teeb ci ntsa iab thiab muaj qhov porous. Nws yog cov khoom siv carbonaceous granular, columnar, lossis koob zoo li koob uas muaj cov graphite siv lead ua me me.
Petroleum coke muaj cov hydrocarbons, 90-97% carbon, 1.5-8% hydrogen, nitrogen, chlorine, sulfur, thiab cov hlau hnyav.
Petroleum coke yog cov khoom lag luam ntawm pyrolysis ntawm cov roj nyoos hauv chav coking qeeb los tsim cov roj sib dua ntawm qhov kub siab.
Cov zis ntawm roj av coke yog li 25-30% ntawm cov roj nyoos.
Nws cov nqi calorific qis yog li 1.5-2 npaug ntawm cov thee, cov ntsiab lus tshauv tsis pub ntau tshaj 0.5%, cov ntsiab lus volatile yog li 11%, thiab nws qhov zoo yog ze rau anthracite.
2: Tus qauv zoo ntawm roj av coke Cov roj av coke qeeb yog hais txog coke tsim los ntawm chav tsev coking qeeb, tseem hu ua coke ib txwm muaj, tsis muaj tus qauv ## sib xws.
Tam sim no, cov tuam txhab tsim khoom hauv tsev feem ntau tsim raws li tus qauv kev lag luam SH0527-92 uas tau tsim los ntawm lub tuam txhab Petrochemical Tuam Tshoj yav dhau los.
Tus qauv feem ntau yog cais raws li cov ntsiab lus sulfur ntawm roj av coke.
Tus lej 1 coke yog qhov tsim nyog rau kev ua cov hluav taws xob graphite electrode hauv kev lag luam steelmaking, thiab kuj siv ua carbon rau kev ua kom zoo nkauj txhuas
No. 2 coke yog siv rau electrode paste thiab graphite electrode ntau lawm hauv electrolytic cell (cub) hauv kev lag luam txhuas smelting
Tus lej 3 coke yog siv rau hauv kev tsim cov silicon carbide (cov khoom sib tsoo) thiab calcium carbide (calcium carbide), nrog rau lwm cov khoom carbon, nrog rau hauv kev tsim cov anode blocks rau aluminium smelter thiab hauv kev tsim cov cib carbon lossis hauv qab cub tawg hauv qhov cub tawg.
3: cov kev siv tseem ceeb ntawm roj av coke
Cov kev siv tseem ceeb ntawm roj av coke yog cov anode ua ntej ci thiab anode paste rau electrolytic aluminium, carbon ntau lawm ntawm carbonizing tus neeg sawv cev, graphite electrode, smelting industrial silicon thiab roj, thiab lwm yam.
Raws li cov qauv thiab tsos ntawm roj av coke, cov khoom roj av coke tuaj yeem muab faib ua koob coke, daim txhuam cev coke, projectile coke thiab hmoov coke:
(1) Cov coke zoo li koob, nrog cov qauv zoo li koob thiab cov qauv fiber, feem ntau yog siv ua cov electrode graphite muaj zog thiab cov electrode graphite muaj zog heev hauv kev ua hlau.
Vim tias cov koob coke muaj cov qauv ntsuas zoo nruj heev hauv cov ntsiab lus sulfur, cov ntsiab lus tshauv, cov ntsiab lus volatiles thiab qhov ceev tiag tiag, muaj cov kev cai tshwj xeeb ntawm cov thev naus laus zis tsim khoom thiab cov khoom siv raw ntawm koob coke.
(2) Cov roj coke uas muaj cov tshuaj lom neeg siab thiab cov ntsiab lus tsis muaj kuab paug tsawg, feem ntau yog siv rau hauv kev lag luam smelting txhuas thiab kev lag luam carbon.
(3) Projectile coke lossis spherical coke: nws yog spherical nyob rau hauv cov duab thiab 0.6-30 hli nyob rau hauv lub cheeb. Nws feem ntau yog tsim los ntawm high-sulfur thiab high-asphaltene residue thiab tsuas yog siv tau rau kev tsim hluav taws xob, cement thiab lwm yam roj industrial.
(4) Hmoov coke: nws yog tsim los ntawm cov txheej txheem coking fluidized nrog cov khoom me me (inch: 0.1-0.4mm), cov ntsiab lus volatilization siab thiab cov coefficient thermal expansion siab, yog li nws tsis tuaj yeem siv ncaj qha rau hauv kev npaj electrode thiab kev lag luam carbon.
4: Cov roj av coke uas tau hlawv
Thaum lub graphite electrode rau steelmaking lossis lub anode paste (melting electrode) rau txhuas thiab magnesium, txhawm rau ua kom roj av coke (coke) ua tau raws li qhov yuav tsum tau ua, cov coke yuav tsum tau calcined.
Qhov kub calcining feem ntau yog nyob ib puag ncig 1300 ℃, lub hom phiaj ntawm qhov ntawd yog kom tshem tawm cov naphthol coke volatilization kom deb li deb tau.
Ua li no, cov ntsiab lus hydrogen ntawm cov roj av coke reproducts tuaj yeem txo qis, qib graphitization ntawm roj av coke tuaj yeem txhim kho, lub zog kub siab thiab kev tiv thaiv cua sov ntawm graphite electrode tuaj yeem txhim kho, thiab kev ua hluav taws xob ntawm graphite electrode tuaj yeem txhim kho.
Calcining feem ntau yog siv los tsim cov graphite electrode, cov khoom siv carbon paste, Pob zeb diamond xuab zeb, kev lag luam phosphorus zaub mov, kev lag luam metallurgical thiab calcium carbide, ntawm cov graphite electrode siv dav.
Coke tsis muaj forging tuaj yeem siv ncaj qha ua calcium carbide, silicon carbide thiab boron carbide ua cov ntaub ntawv sib tsoo.
Nws kuj tseem siv tau ncaj qha ua coke rau kev lag luam metallurgical blast furnace lossis blast furnace lining carbon cib, kuj siv tau rau casting txheej txheem compact coke, thiab lwm yam.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-20-2020