Lub luag haujlwm ntawm graphitized petroleum coke hauv kev lag luam smelting xws li kev lag luam silicon thiab silicon carbide yog dab tsi?

Lub Luag Haujlwm ntawm Graphitized Petroleum Coke hauv Kev Lag Luam Smelting ntawm Industrial Silicon thiab Silicon Carbide

I. Lub Luag Haujlwm hauv Kev Siv Silicon Smelting Hauv Kev Lag Luam

1. Kev Ua Haujlwm ntawm Tus Neeg Sawv Cev Txo Qib Core
Cov roj av coke uas muaj graphitized yog ib qho ntawm cov tshuaj txo cov pa roj carbon tseem ceeb hauv kev tsim cov silicon hauv kev lag luam. Nws cov pa roj carbon ntau (90% -97%) thiab cov yam ntxwv tshauv tsawg ua rau nws yog cov khoom siv tseem ceeb rau kev muab cov pa roj carbon uas xav tau rau cov tshuaj tiv thaiv. Thaum lub sijhawm hluav taws xob arc furnace smelting, roj av coke pab txhawb kev hloov pauv ntawm silica (SiO₂) mus rau hauv silicon hauv kev lag luam los ntawm kev txo cov tshuaj tiv thaiv carbothermal. Tsis tas li ntawd, nws cov hluav taws xob conductivity pab tswj qhov tsis kam ntawm lub cub tawg them, tswj qhov tob ntawm electrode thiab ua kom zoo dua qhov kev ua haujlwm ntawm lub cub tawg arc.

2. Kev Txhim Kho Kev Ua Haujlwm ntawm Lub Tshuab Hluav Taws Xob

• Kev Kho Kom Tsis Txhob Muaj Teeb Meem: Qhov hluav taws xob conductivity ntawm roj av coke cuam tshuam rau qhov tsis kam ntawm lub cub tawg. Los ntawm kev kho nws cov koob tshuaj thiab qhov loj me ntawm cov khoom me me, qhov ua tau zoo ntawm lub cub tawg hluav taws xob arc tuaj yeem ua kom zoo dua, txo kev siv hluav taws xob.
• Kev Txhim Kho Kev Nkag Tau: Cov roj av coke ntshiab feem ntau yuav ua graphitize thaum kub siab, ua rau muaj cov tawv ntoo ntawm qhov chaw ntawm lub cub tawg. Txhawm rau kom txo qhov no, cov ntoo me me lossis sawdust raug sib xyaw ua ke kom ua rau muaj kev tiv thaiv tshwj xeeb, txhim kho qhov nkag tau ntawm lub cub tawg, thiab ua kom ruaj khov rau cov xwm txheej ua haujlwm.
• Kev Ua Haujlwm Tshuaj Lom Zem Ntxiv: Petroleum coke qhia txog cov khoom txo qis tsis zoo thiab feem ntau siv ua ke nrog cov thee silicon qis lossis cov thee kom ntseeg tau tias muaj kev nce qib zoo ntawm kev txo cov tshuaj tiv thaiv.

3. Kev Sib Npaug Ntawm Qhov Zoo Thiab Tus Nqi

• Kev Tsim Silicon Qib Siab: Cov tshauv tsawg ntawm cov roj av coke ua rau nws tsim nyog rau kev tsim cov silicon kev lag luam uas muaj kev ntshiab siab. Txawm li cas los xij, yuav tsum tswj cov sulfur, vanadium, nickel, thiab lwm yam khoom tsis huv, tshwj xeeb tshaj yog hauv kev tsim cov organosilicon, qhov twg cov roj av coke feem ntau raug txwv kom tiv thaiv kev lom catalyst.
• Cov Kev Zoo ntawm Kev Lag Luam: Piv rau cov thee, roj av coke muaj ntau yam, tus nqi ruaj khov, thiab tsis tshua muaj kev cuam tshuam los ntawm cov cai ib puag ncig, ua rau nws yog tus neeg sawv cev txo qis rau kev tsim khoom loj.

II. Lub Luag Haujlwm hauv Silicon Carbide Smelting

1. Kev Muab Cov Pa roj Carbon
Kev tsim cov silicon carbide (SiC) xav tau cov pa roj carbon uas muaj cov khoom ntshiab heev. Tom qab calcination, cov roj av coke uas muaj graphitized qhia txog cov ntsiab lus volatile tsawg dua thiab kev txhim kho graphitization, muab cov pa roj carbon ruaj khov uas txhawb nqa cov tshuaj tiv thaiv theem khov ntawm silicon thiab carbon los tsim cov silicon carbide uas muaj cov khoom ntshiab heev.

2. Cov Ntawv Thov Hauv Cov Khoom Siv Abrasive
Petroleum coke siv tau ncaj qha los tsim cov silicon carbide abrasives (piv txwv li, cov log sib tsoo, ntawv xuab zeb). Nws qhov nyuaj thiab hnav tsis kam ua rau nws yog cov khoom siv tseem ceeb rau kev ua hlau, kev ua kom zoo nkauj ceramic, thiab lwm yam kev siv.

3. Kev Txhim Kho Cov Txheej Txheem

• Kev Kho Mob Calcination: Calcining raw petroleum coke ntawm 1300 ° C txo cov hydrogen thiab txhim kho graphitization, txhim kho cov hluav taws xob conductivity thiab cua sov tiv thaiv ntawm silicon carbide cov khoom.
• Kev Tswj Qhov Loj ntawm Cov Khoom Me Me: Kev kho qhov loj ntawm cov khoom me me ntawm roj av coke ua kom cov txheej txheem crystallization ntawm silicon carbide zoo dua, txhim kho cov khoom sib xws.

III. Lub Luag Haujlwm thiab Tus Nqi ntawm Kev Lag Luam

1. Kev Ua Haujlwm Zoo Dua ntawm Kev Smelting
Qhov kev ua hluav taws xob thiab kev ruaj khov ntawm cov roj av coke graphitized txo qhov kev siv hluav taws xob hauv cov cub tawg hluav taws xob, ua rau lub voj voog smelting luv dua, thiab txhim kho kev ua haujlwm zoo. Piv txwv li, hauv kev tsim cov silicon hauv kev lag luam, kev sib xyaw roj av coke kom zoo tuaj yeem txo qhov kev siv hluav taws xob los ntawm 5% -10%.

2. Kev Pov Hwm Zoo
Kev tswj cov sulfur, tshauv, thiab cov khoom tsis huv hauv cov roj av coke txo cov khoom tsis yog hlau hauv cov silicon kev lag luam thiab txhim kho qhov huv ntawm silicon carbide, ua tau raws li qhov xav tau ntawm kev tsim khoom siab (piv txwv li, semiconductor-qib silicon carbide).

3. Tsav Tsheb Txhim Kho Kev Lag Luam
Thaum kev lag luam smelting nce qib mus rau qhov kev ua haujlwm loj thiab ntse, graphitized petroleum coke qhov kev ntshiab siab thiab crystallinity txhawb nqa kev tsim cov electrode pastes ua haujlwm siab thiab cov electrodes carbon loj, txhawb kev txhim kho thev naus laus zis thoob plaws hauv kev lag luam.