Puas yog cov dej noo hauv cov coke nyoos yuav tsum tau qhuav ua ntej calcination?

Feem ntau, nws yog qhov tsim nyog yuav tsum tau ua kom qhuav cov dej noo hauv cov coke nyoos ua ntej calcination, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej hauv qab no uas kev ziab yog ib qho txheej txheem tseem ceeb:

I. Cov Kev Cuam Tshuam Tsis Zoo ntawm Cov Dej Nqus rau Cov Txheej Txheem Calcination

1. Cuam tshuam rau Kev Ua Haujlwm Zoo ntawm Kev Tso Tawm Cov Khoom Uas Tsis Muaj Zog

Thaum cov coke nyoos (xws li roj av coke thiab anthracite) muaj cov dej noo ntau dhau, qhov dej evaporation siv ntau qhov cua sov, ua rau qhov kub hloov pauv hauv lub cub tawg calcination thaum lub sijhawm pib. Qhov no cuam tshuam rau qhov ruaj khov ntawm cov khoom volatile (xws li sulfur thiab hydrogen compounds). Piv txwv li, roj av coke feem ntau tso cov dej noo hauv qab 200 ° C. Yog tias cov dej noo tsis raug tshem tawm tag nrho, theem tso tawm cov khoom volatile (500-700 ° C) yuav raug ncua vim qhov kub tsis txaus, ua rau cov khoom siv raw shrinkage tsis sib xws thiab muaj kev pheej hmoo ntawm cov khoom tawg.

2. Txo Cov Khoom Siv Lub Cev ntawm Cov Khoom Raw

Cov dej noo ua rau cov khoom siv raw tsis sib haum, ua rau cov haujlwm ua ntej xws li kev tsoo, kev tshuaj ntsuam, thiab kev sib tsoo nyuaj. Piv txwv li, roj av coke uas muaj cov dej noo ntau tshaj 10% yuav ua rau cov khoom siv txhaws thaum lub sijhawm tsoo thiab ua rau cov khoom me me tsis sib npaug tom qab sib tsoo, cuam tshuam rau qhov zoo ntawm kev sib tov thiab kev tsim cov txheej txheem tom qab.

3. Kev Siv Hluav Taws Xob Thiab Cov Nqi Ntau Ntxiv

Qhov ua kom cov dej noo noo tsis tau ua pa yuav tsum tau cua sov ntxiv. Yog tias tsis tau ziab ua ntej, lub cub tawg calcination yuav tsum tau siv roj ntau dua kom tswj tau qhov kub. Piv txwv li, siv roj av coke, txo cov dej noo noo los ntawm 1% tuaj yeem txuag tau kwv yees li 20 kilojoules ib kilogram ntawm kev siv cua sov, thiab kev kho kom qhuav tuaj yeem txo cov nqi tsim khoom.

II. Kev txhim kho hauv Calcination Zoo los ntawm kev ziab

1. Txhim kho qhov ceev thiab lub zog ntawm cov khoom siv raw

Tom qab ziab, cov dej noo ntawm cov khoom siv raw poob qis dua 0.3%. Thaum lub sijhawm calcination, kev tso tawm ntawm cov khoom volatile yog qhov ua tiav ntau dua, thiab qhov ntim shrinkage ntawm cov khoom siv raw yog sib xws. Qhov tseeb ceev (piv txwv li, nce ntawm 1.42-1.61 g / cm³ mus rau 2.00-2.12 g / cm³ rau roj av coke) thiab lub zog kho tshuab ntawm cov khoom siv raw tau zoo dua, txo qhov kev shrinkage thib ob ntawm cov khoom thaum lub sijhawm ci.

2. Txhim kho Kev Coj Ua thiab Kev Tiv Thaiv Oxidation

Thaum lub sijhawm calcination, cov qauv molecular ntawm cov khoom siv raw raug hloov pauv, thiab qhov resistivity txo qis (piv txwv li, qhov resistivity ntawm roj av coke txo qis nrog qhov kub calcination nce ntxiv), txhim kho conductivity. Lub caij no, cov yeeb yaj kiab carbon pyrolytic tso rau ntawm qhov chaw ntawm cov khoom me me, txhim kho kev tiv thaiv oxidation thiab txuas ntxiv lub neej kev pabcuam ntawm cov khoom.

3. Kev Txhim Kho Kev Ruaj Ntseg ntawm Cov Txheej Txheem

Cov khoom siv qhuav uas muaj cov dej noo sib npaug tuaj yeem zam kev hloov pauv kub hnyav hauv lub cub tawg calcination thiab txo qhov kev puas tsuaj ntawm thermal rau cov khoom siv. Piv txwv li, los ntawm kev tswj cov dej noo ntawm cov thee nkag mus rau hauv lub qhov cub coke qis dua 3%, cov nroj tsuag coke tuaj yeem ntev lub neej ntawm cov qhov cub coke ntau dua 10 xyoo thiab txo qhov deformation ntawm cov phab ntsa chav coke los ntawm 90%.

III. Cov Kev Cai Siv Tau Rau Cov Txheej Txheem Qhuav

1. Kev Tswj Kub thiab Lub Sijhawm

Qhov kub ntawm qhov ziab feem ntau yog nyob nruab nrab ntawm 110-130 ° C, thiab lub sijhawm yuav tsum tau kho raws li qhov loj me ntawm cov khoom me me thiab cov dej noo pib ntawm cov khoom siv raw. Piv txwv li, roj av coke nrog qhov loj me ntawm cov khoom me me tsawg dua 3 hli yuav tsum tau siv sijhawm li 2-4 teev ntawm kev ziab kom ntseeg tau tias cov dej noo sib npaug.

2. Kev Xaiv Khoom Siv

Cov khoom siv ziab khaub ncaws feem ntau muaj xws li lub cub tawg thiab lub tshuab ziab khaub ncaws nruas. Lub cub tawg ua kom qhuav zoo los ntawm kev cua sov rov qab, thaum lub tshuab ziab khaub ncaws nruas txo cov khoom lo rau thiab txhim kho kev ziab khaub ncaws zoo nrog cov phaj qhia sab hauv thiab cov khoom siv ntxuav.

3. Kev Ntsuas Ib Puag Ncig thiab Kev Nyab Xeeb

Lub tshuab ziab khaub ncaws yuav tsum tau nruab nrog cov khoom siv tshem tawm plua plav (xws li cov khoom siv plua plav cyclone + cov khoom siv plua plav ntub) kom txo cov plua plav tawm, nrog rau kev ua haujlwm tshem tawm plua plav txog li 99% lossis ntau dua. Lub caij no, lub kaw lus hlawv siv lub tshuab hlawv roj, uas yooj yim rau kev khiav lag luam thiab txhim khu kev qha.