Hauv kev lag luam graphite thiab carburizer, kev paub txog kev tshaj lij tsis yog lub hauv paus ntawm kev sib txuas lus hauv kev lag luam nkaus xwb tab sis kuj yog tus yuam sij rau cov kws tshaj lij los txiav txim siab, ua kom cov khoom zoo, thiab ua tiav cov nqi -kev ua tau zoo. Txawm hais tias koj yog ib tug novice hauv daim teb no lossis ib tus kws tshaj lij nrhiav kom nkag siab koj txoj kev nkag siab, 10 cov ntsiab lus tseem ceeb no yuav pab koj nkag siab qhov kev lag luam pulse.
1. Secondary Coke
- Kev txhais thiab qhov tseem ceeb: Secondary coke yog cov khoom siv roj av coke lossis pitch coke tom qab calcination, cov khoom siv tseem ceeb hauv kev tsim cov graphite. Cov txheej txheem calcination (feem ntau yog ua tiav ntawm 1200-1350 degree) tshem tawm cov khoom tsis zoo, ua kom cov ntsiab lus carbon thiab ntom ntom, ua rau nws tsim nyog rau graphitization.
- Cov Lus Qhia: Thaum yuav khoom, xyuam xim rau calcination kub thiab uniformity, raws li lawv ncaj qha cuam tshuam rau tom qab graphitization kev ua tau zoo. Tsawg- coke theem nrab zoo yuav ua rau cov khoom muaj zog tiv taus thiab tsis muaj zog txhua yam.
2. Cov qauv sib xyaw
- Kev txhais thiab qhov tseem ceeb: Xa mus rau qhov gradation thiab tsub zuj zuj ntawm cov khoom carbon particles (aggregates) ntawm qhov sib txawv particle qhov ntau thiab tsawg hauv cov khoom graphite. Ib qho kev ua kom zoo tshaj plaws tuaj yeem ua kom cov ntim ntim kom zoo, txo qis kev siv cov ntaub ntawv, thiab txhim kho cov khoom muaj zog thiab kev ua haujlwm.
- Cov Lus Qhia: Thov tus neeg muag khoom los muab daim ntawv qhia qhov loj me me (PSD). Qhov tsim nyog piv ntawm ntxhib, nruab nrab, thiab cov khoom zoo yog qhov yuav tsum tau ua ua ntej kom ntseeg tau cov qauv compactness.
3. Graphitization degree
- Kev txhais thiab qhov tseem ceeb: Ib qho kev ntsuas uas ntsuas qhov℃uas cov khoom siv lead ua qauv mus txog qhov zoo tshaj plaws graphite, feem ntau yog qhia ncaj qha los ntawm kev ntsuas qhov sib txawv ntawm qhov sib txawv (d002) ntawm X-ray diffraction lossis resistivity. Qhov siab dua qhov graphitization degree, qhov zoo dua qhov hluav taws xob thiab thermal conductivity, thiab qhov zoo dua cov tshuaj stability.
- Cov Lus Qhia: Qhia meej txog daim ntawv thov. Siab -cov hluav taws xob hluav taws xob yuav tsum tau muaj cov graphitization siab heev (piv txwv li, siab dua 98%), thaum qee cov ntawv thov carburizer tuaj yeem lees txais qib qis graphitization los tswj cov nqi.
4. Tsau Carbon
- Kev txhais thiab qhov tseem ceeb: Xa mus rau qhov tsis muaj - cov ntsiab lus tsis hloov pauv cov pa roj carbon monoxide tom qab cov khoom siv tau ua kom sov thaum tsis muaj cua ntawm qhov kub siab (kwv yees li 900 degree), uas yog qhov tseem ceeb tshaj plaws rau cov carburizers. Cov ntsiab lus ruaj ruaj ncaj qha txiav txim siab carburizing efficiency thiab tus nqi ntawm impurities qhia.
- Cov Lus Qhia: Tsuas yog cov txiaj ntsig tau los ntawm cov qauv kev sim (xws li ASTM D3172) tuaj yeem ntseeg tau. Ua tib zoo saib xyuas qhov sib txawv ntawm "qhuav hauv paus" thiab "raws li- tau txais hauv paus" cov pa roj carbon monoxide kom tsis txhob muaj kev txiav txim siab vim muaj dej noo.
5. Cov teeb meem tsis haum
- Kev txhais thiab qhov tseem ceeb: Gaseous thiab kua khoom (tsis yog -cov pa roj carbon monoxide) raug tso tawm thaum cov khoom raug cua sov thaum tsis muaj cua ntawm qhov kub siab. Cov teeb meem tsis sib haum xeeb ntau dhau tuaj yeem ua rau tawg thaum lub sij hawm steel smelting, ncua cov nyhuv carburizing, thiab cuam tshuam rau qhov zoo ntawm cov hlau molten.
- Cov Lus Qhia: Cov teeb meem tsis hloov pauv ntawm siab -zoo graphite lossis carburizer feem ntau yog tsawg dua 1%. Thaum yuav khoom, yuav tsum tau teeb tsa lub siab tshaj plaws, thiab nws yuav tsum tau txiav txim siab ua ke nrog cov ntsuas xws li cov ntsiab lus ntawm cov pa roj carbon monoxide thiab sulfur.
6. Qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom nti
Kev txhais thiab qhov tseem ceeb:
- Muaj tseeb tiag: Qhov loj ntawm ib chav tsev ntim ntawm cov khoom tom qab tsis suav tag nrho cov pores, xav txog cov khoom siv purity thiab crystallinity.
- Apparent Density (Ntau qhov ntom ntom): Qhov loj ntawm ib chav tsev pom meej ntim, suav nrog cov pores, uas cuam tshuam ncaj qha rau lub cev lub zog thiab chav ntim kev ua haujlwm ntawm cov khoom.
- Cov Lus Qhia: Lub siab muaj tseeb feem ntau qhia tau hais tias graphitization℃zoo. Bulk density is directly related to material strength and resistivity, and requirements should be formulated according to application scenarios (such as electric arc furnace electrodes, special refractory materials).
7. Kev tiv thaiv
- Kev txhais thiab qhov tseem ceeb: Lub cev muaj nuj nqis uas ntsuas cov khoom siv hluav taws xob, uas yog qhov tseem ceeb rau cov khoom siv hluav taws xob uas siv los ua cov khoom siv hluav taws xob (xws li electrodes). Qhov qis dua qhov kev tiv thaiv, qhov tsawg dua lub zog poob thiab qhov siab dua qhov kev ua haujlwm smelting.
- Cov Lus Qhia: Xav kom tus neeg muag khoom kuaj thiab muab cov ntaub ntawv raws li tus qauv (xws li kub thiab av noo). Nco ntsoov tias resistivity yog anisotropic, thiab cov resistivity thaum uas tig mus rau txoj kev tsim yog feem ntau qis dua qhov perpendicular rau nws.
8. Cov ntsiab lus Sulfur
- Kev txhais thiab qhov tseem ceeb: Cov ntsiab lus ntawm cov khoom sulfur hauv cov khoom. Sulfur yog ib qho teeb meem hauv cov hlau smelting. Cov tshuaj sulfur ntau dhau yuav ua rau kub brittleness ntawm cov hlau thiab corrode lub qhov cub hauv ob sab phlu. Hauv cov txheej txheem graphitization, cov ntsiab lus sulfur ntau dhau yuav cuam tshuam rau cov txheej txheem ib puag ncig.
- Cov Lus Qhia: nruj me ntsis txwv lub sab sauv cov ntsiab lus ntawm leej faj (xws li, siab- cov khoom zoo yuav tsum tsawg dua 0.05%). Nkag siab txog cov khoom siv raw; cov ntsiab lus sulfur ntawm roj av coke-raws li cov khoom lag luam feem ntau yog siab dua li ntawm pitch coke-raws li cov khoom lag luam.
9. Tshauv Ntsiab Lus
- Kev txhais thiab qhov tseem ceeb: Lub incombustible inorganic residue seem tom qab cov khoom yog kiag li hlawv nyob rau hauv cov huab cua. Tshauv yog ib phau ntawm impurities (xws li SiO₂, Al₂O₃, Fe₂O₃, thiab lwm yam), uas yuav ua rau cov hlau molten, txo cov carburizing efficiency, thiab cuam tshuam rau purity thiab kev ua tau zoo ntawm cov khoom graphite.
- Cov Lus Qhia: Cov ntsiab lus tshauv yog tus yuam sij rau kev ntsuas qhov purity ntawm raw khoom. High-kawg daim ntawv thov (xws li lithium- ion roj teeb anode cov ntaub ntawv, siab-purity carburizers) yuav tsum muaj cov hmoov tshauv tsawg heev (xws li<0.5%). Clarifying the chemical composition of ash is also important.
10. Particle Size Distribution (PSD)
- Kev txhais thiab qhov tseem ceeb: Hais txog qhov sib faib ntawm cov khoom sib txawv ntawm qhov sib txawv ntawm cov khoom. Rau carburizers, particle loj cuam tshuam qhov kev sib cais thiab tawm los; rau cov khoom siv dag zog graphite aggregates, particle loj faib txiav txim siab qhov sib sau ntom ntom thiab cov khoom siv kawg.
- Cov Lus Qhia: Xaiv qhov loj me me (xws li 0.5-5mm, 1-10mm) raws li cov txheej txheem thov (xws li hluav taws xob rauv noj, ladle ntws-dhau ntxiv). Xav kom tus neeg muag khoom muab daim ntawv qhia txog qhov loj me me thiab ua tib zoo saib xyuas nws qhov kev ruaj ntseg.
Cov lus qhia txog kev yuav khoom
Thaum sib txuas lus nrog cov neeg muab khoom, cov kws tshaj lij yuav tsum tsis txhob saib cov ntsuas no hauv kev sib cais. Piv txwv li:
- Thov ibUa tiav Daim Ntawv Pov Thawj Kev Ntsuam Xyuas (COA), hla -xyuas cov ntaub ntawv ntawm cov pa roj carbon monoxide, cov ntsiab lus sulfur, cov ntsiab lus ntawm cov hmoov tshauv, thiab cov teeb meem tsis hloov pauv kom ntseeg tau tias lawv qhov kev sib raug zoo (cov lej yog ze li 100%).
- Nkag siabkev ua lag luam -offs: Ua raws li ultra- cov pa roj carbon ntau thiab cov ntsiab lus tsis muaj leej faj yuav ua rau tus nqi nce ntxiv, thiab cov lus qhia tsim nyog yuav tsum tau txiav txim siab raws li qib ntawm cov hlau tsim.
- Kev sib raug zoo ntawm cov qauv thiab cov khoom siv: Tom qab tau txais kev txaus siab rau cov qauv kev xeem, nco ntsoov qhia meej meej txog qhov ua tau zoo ntawm cov khoom lag luam batch nyob rau hauv daim ntawv cog lus thiab tsim kom muaj kev tshuaj ntsuam xyuas tuaj txog.
Mastering no "jargon" tsis yog tsuas yog dhau mus rau kev sib txuas lus hauv kev lag luam tab sis kuj yog lub cuab yeej muaj zog rau koj kom nkag siab txog cov khoom lag luam zoo, zam kev pheej hmoo ntawm kev yuav khoom, thiab ua kom muaj txiaj ntsig zoo tshaj plaws. Hauv kev ua si nrog cov neeg muab khoom, kev paub txog kev tshaj lij yog ib txwm muaj koj qhov kev txhawb nqa zoo tshaj plaws.
