Kev siv thiab siv cov graphite electrodes hauv hluav taws xob arc rauv smelting (4)

Contrastive Analysis of Consumption Level of Graphite Electrodes

Thaum cov txheej txheem thiab kev khiav hauj lwm ntawm lub smelting arc rauv tsis hloov ntau npaum li cas nyob rau hauv ib lub sij hawm ntawm lub sij hawm, qhov noj theem ntawm graphite electrodes yog yeej sib npaug. Nws yog ib txwm ua rau kev noj ntawm lub txee electrode hloov pauv raws li lub hnub nyoog ntawm lub cub tawg nce lossis cov txheej txheem hloov. Tom qab ntawd, ntawm tib lub tshuab hluav taws xob arc rauv, muaj cov khoom lag luam ntawm tib lub tuam txhab, tab sis kev noj cov plua plav tseem ceeb heev los ntawm tus neeg siv, yog li qhov kev tawm tsam tau tsa los ua ib qho tshwm sim. Qhov zoo ntawm txhua yam khoom hloov pauv, tab sis qhov loj ntawm qhov hloov pauv qhia txog qib khoom siv thiab kev tswj hwm qib ntawm cov chaw tsim khoom.

(1) Kev tsom xam ntxiv ntawm graphite electrode breakage hauv smelting

Qee zaus electrode breakage nyob rau hauv hluav taws xob arc rauv smelting yog ib qho tshwm sim thiab tsis tuaj yeem zam tau kiag li, thaum lub tshuab hluav taws xob loj ntawm DC, AC thiab LF hluav taws xob rauv yog suav tias yog xwm txheej. Kev cuam tshuam nrog lub cev electrode tawg yog qhov ua haujlwm nyuaj tshaj plaws hauv kev ua haujlwm, thiab qhov tshwm sim yog khi rau kev noj ntau dhau, lub voj voog ntev smelting, qis dua thiab cov nqi ntau dua. Cov txheej txheem thoob ntiaj teb ntawm AC hluav taws xob rauv hluav taws xob, cov electrode tawg 5 mus rau 7 zaug hauv ib hlis. Feem ntau ntawm cov txheej txheem loj loj DC thiab AC hluav taws xob hluav taws xob tau nruab nrog lub tshuab hluav taws xob tswj, uas ua rau tib neeg txo qis, thiab cov electrode tawg ob zaug hauv ib hlis;raulub siab loj-scale LF rauv hauv paus, eTsis pub electrode breakage. Yog vim li cas rau electrode breakage nyob rau hauv hluav taws xob rauv smelting kev khiav hauj lwm yog complex, thiab zoo saib yuav tsum tau them rau tsib yam nram qab no.

(2) Smelting txheej txheem

A.Cov khoom siv raw khoom sib piv, zam cov pob loj thiab cov khoom tsis zoo hauv qab electrode;

B.Thaum qhov tshwm sim ntawm "bridging" tshwm sim tom qab dhau los ntawm lub qhov dej, qhov kev ua haujlwm ntev arc yuav tsum tau siv los ua kom tsis txhob muaj kev cuam tshuam ntawm cov khoom tawg loj;

C.Lub tshuab nqa hluav taws xob thiab lub tshuab hluav taws xob me me yuav tsum yog qhov sib txawv kom tsis txhob raug khawb thiab tawg thaum thermal shock.

(3) Hluav taws xob kis tau tus mob

A.Txiav txim siab qhov pib arc pib iav thiab nce nws nyob rau hauv ib ntus (txhua lub qhov cub muaj tsawg kawg yog 3 lub zog xa hluav taws xob nkhaus) kom tsis txhob muaj cua sov ntau dhau los ntawm kev hloov pauv tam sim no ntau dhau thiab nquag hloov ntawm qhov ntev thiab luv luv ntawm lub cub tawg;

B.Raws li qhov cub kub kub nce, qee qhov kev ntxhov siab sab hauv yuav tsum raug tso tawm ntawm qhov sib txuas electrode. Tom qab arcing, cov hav zoov tam sim no ib cheeb tsam ntawm lub electrode muaj ib tug gradual upward txheej txheem, uas yog lub adaptation txheej txheem ntawm lub electrode thiab lub cub tawg.

C.Hauv kev ua haujlwm dhau, lub peev xwm dhau ntawm lub tshuab hluav taws xob tshiab feem ntau tsis ntau tshaj 20 feem pua. Yog hais tias lub arcing tam sim no tshaj qhov ntsuas tus nqi, qhov sib koom ua ke feem ntau yuav tawg. Thaum lub tshuab hluav taws xob tau hloov mus rau qhov cub, txawm tias nws yog overloaded, nws yuav khiav ib txwm, tab sis qhov sib koom ua ke yuav tig liab.

(4) Smelting furnace mob

A.Kev ua haujlwm ntawm kev them nyiaj thiab kev xa hluav taws xob muaj feem cuam tshuam nrog kev hloov pauv ntawm lub tshuab cua sov, tab sis cov pa oxygen tshuab, cov roj hluav taws xob thiab cov roj roj yog cov yuam sij rau qhov ua rau lub cub tawg ua rau cov xwm txheej tsis zoo. Kev siv tshuaj lom neeg lub zog txo cov kev siv hluav taws xob, tab sis ua kom cov oxidation degree ntawm electrode nto thiab lub ntsej muag sab saud. Tshwj xeeb tshaj yog thaum lub siab tsis zoo yog loj heev, oxidation ceev ntawm electrode nto yog ceev, thiab nto ntawm lub electrode lub cev yog tapered.

B.Steelmaking txheej txheem yog txheej txheem ntawm slag ua. Kev siv tshuaj lom neeg lub zog ua rau kom lub zog ntawm cov hlau molten thiab yog qhov tsim nyog rau kev tsim cov foamed slag. Lub boiling ntawm molten hlau, thickness ntawm slag txheej, fluidity ntawm slag kua thiab submerged arc nyhuv tsis yog tsuas yog muaj feem xyuam rau cov nyhuv smelting, tab sis kuj mus rau kev noj cov pa roj carbon nyob rau hauv qab ntawm lub electrode thiab U-tig. Thiab kev noj ntawm qhov chaw ncig yog qhov tseem ceeb heev.

C.Lub tshuab ua haujlwm tsis zoo ntawm lub tshuab hluav taws xob feem ntau hloov pauv, nrog kev vibrations ntawm cov electrodes nrog rau sab-rau-sab viav vias. Kev hloov pauv tam sim no ua rau muaj kev poob siab thermal, uas tsis yog tsuas yog ua kom lub ntsej muag noj ntawm graphite electrodes nyob rau hauv ib puag ncig uas muaj cov pa oxygen, tab sis kuj kuaj cov khoom sib txuas (lub zog sib koom ua ke).

(5) Electrode cia thiab thauj

A. Tsis txhob sib cuag nrog cov kua nruab nrab hauv qhov chaw cia khoom electrode, txwv tsis pub cov ntses nplai zoo li pob yuav tshwm tom qab cua sov.

B.Thaum khaws cov kev sib koom ua ke ntawm qhov chaw, nws yog ib qho tsim nyog yuav tsum tsis txhob nyob ze rau qhov kub ntawm qhov kub thiab txias, txwv tsis pub cov pob qij txha yuav yooj yim yaj thiab ntws tawm tom qab cua sov.

(6) Electrode zoo

A.Rau qhov loj-scale UHP thiab HP sab sauv txwv hluav taws xob rauv, muab graphite electrodes yuav tsum txhim kho lub cev zoo.

B.Qhov teeb meem ntawm cov qauv tsis xws luag lossis lub zog tsis txaus yuav tsum raug tshem tawm, txwv tsis pub kev sib koom ua ke sib tsoo yuav tshwm sim thaum thawj pob smelting yog siv rau 1-3 feeb.

C.Lub machining raug ntawm lub ntsej muag electrode kawg kuj tseem ceeb heev. Yog tias muaj qhov sib txawv, yuav muaj huab cua permeability thiab hauv zos redness. Txog 10 feeb tom qab xa hluav taws xob, qhov sib koom ua ke yog pom tseeb liab, thiab tom qab 2 ~ 3 lub qhov cub tawg tas li, cov buckle sab hauv tau yooj yim oxidized thiab tawg lossis poob.

D.Qhov teeb meem ntawm kev sib haum xeeb yuav tsum tau them nyiaj rau txhua lub sijhawm. Txawm hais tias nws yog xoob lossis tsis txuas rau hauv qhov chaw, tsuav yog muaj qhov sib txawv, nws yuav tawg lossis poob. Los ntawm qhov kev pom ntawm kev siv, feem ntau ntawm cov teeb meem ntawm qhov chaw yog tshwm sim los ntawm kev kam rau siab haum.

Cov khoom lag luam ntsig txog:https://www.shj-carbon.com/graphite-products/graphite-electrode/rp-graphite-electrode.html