Izimiso Zokuxuba Isilinganiso Se-Petroleum Coke Nokuqukethwe Kwe-Sulfur Okuhlukahlukene:
Uyini Umkhawulo We-Sulfur Ovunyelwe Kakhulu Wokuphakelwa Kwe-Kiln Ukuqinisekisa Ikhwalithi Ye-Anode?**
Ekukhiqizweni kwama-anode abhakiwe kusengaphambili e-aluminium, umkhawulo ophezulu wesulfure ovunyelwe wokudla kwe-oven ngokuvamile u-3.0% ukuqinisekisa ikhwalithi ye-anode. Lo mkhawulo usekelwe ezimisweni ezilandelayo eziyinhloko kanye nokucatshangelwa kobuchwepheshe:
1. Umthelela Ophindwe Kabili Wokuqukethwe Kwe-Sulfur Ekusebenzeni Kwe-Anode
- Izinzuzo ze-Sulfur Ephansi:
Uma okuqukethwe kwe-sulfur kuphansi (isb., ≤2.0%), ukuzinza kokushisa kwe-anode kanye nokumelana ne-oxidation kuyathuthuka, kunciphisa ukukhishwa kwe-sulfur oxide (SOₓ) ngesikhathi se-electrolysis futhi kunciphisa izingozi zokungcoliswa kwemvelo. Ngaphezu kwalokho, i-low-sulfur coke inciphisa ukuqhekeka kwe-anode, ukuqhekeka, kanye nokusetshenziswa ngokweqile ngenkathi yandisa impilo yesevisi. - Izingozi Zesibabule Esiphezulu:
Okuqukethwe kwe-sulfur okweqile (isb., >3.0%) kwandisa kakhulu ukuqhekeka kokushisa kwe-anode, okuholela ekuqhekekeni nasekuqhekekeni ngesikhathi se-electrolysis, okuphakamisa ukusetshenziswa ngokweqile. Ngaphezu kwalokho, i-sulfur ikhiqiza ama-sulfide (isb., i-FeS) ngesikhathi se-electrolysis, okwandisa ukumelana kokuxhumana phakathi kwenduku ye-anode ne-carbon anode, kuphakamisa ukwehla kwamandla kagesi, kanye nokukhulisa ukusetshenziswa kwamandla.
2. Izimiso Zokuxuba Isilinganiso: Ukulawula Okuqukethwe Kwesibabule Kokudla Kwesitofu ≤3.0%
- Ukuhlanganisa i-High- kanye ne-Low-Sulfur Coke:
I-coke ene-sulfur ephezulu (isb., i-sulfur engu-4.5%) ingaxutshwa ne-coke ene-sulfur ephansi (isb., i-sulfur engu-1.2%) ukuze kuncishiswe ngempumelelo okuqukethwe kwe-sulfur kwe-coke exubile. Isibonelo, isilinganiso sokuxuba esingu-1:1 siveza okuqukethwe kwe-sulfur exubile okungu-2.85%, okuhlangabezana nemikhawulo yokudla kwe-kiln. Ukuze kuncishiswe okwengeziwe, ukulungisa isilinganiso (isb., i-1:2) kwehlisa okuqukethwe kwe-sulfur kube ngu-2.30%. - Isitoreji Esikhethekile Nokuhlanganiswa Okuqondile:
I-coke ene-sulfur ephezulu nephansi kumele igcinwe ngokwehlukana ukuze kugwenywe ukungcoliswa okuphambene. Ngesikhathi sokuqoqa, amabhakede okuthatha asetshenziselwa ukuhlanganisa izinto ngokwezilinganiso, ukuqinisekisa ukuxuba okufanayo ngaphambi kokungena ku-calciner nokuqinisa okuqukethwe kwe-sulfur ngaphakathi kwebanga eliqondiwe. - Ukuthuthukisa Inqubo Yokubala:
Ukuqapha ngokucophelela amazinga okushisa e-calcination (ngokuvamile 1250–1350°C) kanye nesikhathi esanele sokucwilisa kubalulekile ukuze kuncishiswe insalela eguquguqukayo futhi kuthuthukiswe ikhwalithi ye-calcined coke. Ukulungiswa kwemingcele kuqinisekisa ukusebenza okuzinzile kwe-calciner.
3. Imikhuba Yemboni Yemikhawulo Ephezulu Yesibabule Sokudla Kwesitofu
- Ucwaningo Lwabakhiqizi Be-Anode Ebhakiwe Ngaphambili Yasekhaya:
I-petroleum coke ene-sulfur engu-3.0% ingafakwa i-calcium ngqo ngaphandle kokukhishwa kwe-sulfurization eyengeziwe, okubonisa ukuvumelana kwemboni ngokulinganisela ikhwalithi ye-anode kanye nokusebenza kahle kwezindleko. - Inkomba Yezindinganiso Zomhlaba Wonke:
Imboni yekhabhoni ye-aluminium ngokuvamile idinga okuqukethwe kwe-sulfur okungu-≤3.0% ku-petroleum coke. Isibonelo, i-Grade 3B petroleum coke eluhlaza icacisa umkhawulo we-sulfur ongu-3.0%, ofanele ukukhiqizwa kwe-anode ebhakiwe kusengaphambili.
4. Imiphumela Yokudlula Imingcele Yesibabule
- Ikhwalithi ye-Anode Eyehlile:
I-sulfur eningi ikhulisa ukuqina kokushisa, okubangela ukuqhekeka, ukuqhekeka, kanye nokusetshenziswa okuphezulu ngesikhathi se-electrolysis. Ukumelana okuphezulu kwe-anode kuphakamisa i-voltage yeseli kanye nokusetshenziswa kwamandla e-aluminium ngethani ngalinye. - Ukungcoliswa Kwemvelo Okubi Kakhulu:
Ukwanda kokukhishwa kwe-SOₓ ngesikhathi se-electrolysis kulimaza ikhwalithi yomoya futhi kwephula imithethonqubo yezemvelo. - Ukugqoka Imishini Esheshisiwe:
Amafilimu e-sulfide (isb., i-FeS) ezindongeni ze-anode aphakamisa ukumelana kokuthintana, asheshise ukuwohloka kwemishini futhi anciphise isikhathi senkonzo.
Isikhathi sokuthunyelwe: Ephreli-20-2026