Ngophuhliso olukhawulezileyo lweshishini le-aluminium elenziwe nge-electrolytic, ishishini le-anode ye-aluminium prebaking liye laba yindawo entsha yotyalo-mali, imveliso ye-anode ye-prebaking iyanda, i-petroleum coke yeyona nto iphambili kwi-anode ye-prebaking, kwaye izalathiso zayo ziya kuba nefuthe elithile kumgangatho weemveliso.
Umxholo wesalfure
Umxholo wesalfure kwi-petroleum coke uxhomekeke kakhulu kumgangatho we-oyile ekrwada. Ngokubanzi, xa umxholo wesalfure kwi-petroleum coke uphantsi, ukusetyenziswa kwe-anode kuncipha ngokunyuka komxholo wesalfure, kuba i-sulfur yonyusa izinga lokukhonkotha kwe-asphalt kwaye inciphisa ukuqina kwe-asphalt coking. Kwangaxeshanye, i-sulfur ikwadibaniswa nokungcola kwesinyithi, kunciphisa i-Catalysis ngokungcola kwesinyithi ukuze kuthintelwe ukwenzeka kwe-carbon dioxide kunye nokwenzeka komoya kwe-carbon anodes. Nangona kunjalo, ukuba umxholo wesalfure uphezulu kakhulu, uya kwandisa ubuthathaka bobushushu be-carbon anode, kwaye ngenxa yokuba i-sulfur iguqulwa kakhulu ibe yi-gas phase ngohlobo lwe-oxides ngexesha lenkqubo ye-electrolysis, iya kuyichaphazela kakhulu imeko-bume ye-electrolysis, kwaye uxinzelelo lokhuseleko lokusingqongileyo luya kuba lukhulu. Ukongeza, i-sulfuration inokwenziwa kwifilimu ye-anode rod Iron, okwandisa ukwehla kwe-voltage. Njengoko ukungeniswa kwe-oyile ekrwada kwilizwe lam kuqhubeka nokwanda kwaye iindlela zokucubungula ziqhubeka ziphucuka, umkhwa we-petroleum coke engaphantsi awunakuphepheka. Ukuze bakwazi ukuziqhelanisa notshintsho kwizixhobo eziluhlaza, abavelisi be-anode ebhakiweyo kwangaphambili kunye nomzi-mveliso we-aluminium ye-electrolytic benze utshintsho olukhulu kwezobuchwepheshe kunye nophuhliso lwezobuchwepheshe. Ukusuka kwi-anode ebhakiweyo kwangaphambili yaseTshayina Ngokophando lwamashishini emveliso, i-petroleum coke enomxholo wesulfure omalunga ne-3% ngokubanzi inokufakwa i-calcium ngokuthe ngqo.
Izinto zokulandelela
Izinto ezilandelelanayo kwi-petroleum coke ziquka i-Fe, i-Ca, i-V, i-Na, i-Si, i-Ni, i-P, i-Al, i-Pb, njl. Ngenxa yemithombo eyahlukeneyo yeoyile yeendawo zokucoca i-petroleum, ukwakheka kunye nomxholo wezinto ezilandelelanayo zahlukile kakhulu. Ezinye izinto ezilandelelanayo ziziswa kwi-oyile ekrwada, njenge-S, i-V, njl. Ezinye ii-alkali metals kunye nee-alkaline earth metals nazo ziya kungeniswa, kwaye umxholo othile womlotha uya kongezwa ngexesha lokuthuthwa nokugcinwa, njenge-Si, i-Fe, i-Ca, njl. Umxholo wezinto ezilandelelanayo kwi-petroleum coke uchaphazela ngokuthe ngqo ubomi benkonzo yee-anode ezibhakiweyo kwangaphambili kunye nomgangatho kunye nomgangatho weemveliso ze-aluminium ze-electrolytic. I-Ca, i-V, i-Na, i-Ni kunye nezinye izinto zinefuthe elinamandla le-catalytic kwi-anodic oxidation reaction, ekhuthaza i-oxidation ekhethiweyo ye-anode, ebangela ukuba i-anode ilahle i-slag kunye neebhloko, kwaye yonyuse ukusetyenziswa okugqithisileyo kwe-anode; i-Si kunye ne-Fe zichaphazela kakhulu umgangatho we-aluminium yokuqala, kwaye umxholo we-Si uyanda. Iya kwandisa ubulukhuni be-aluminium, inciphise ukuqhuba kombane, kwaye ukwanda komxholo we-Fe kunempembelelo enkulu kwi-plasticity kunye nokumelana nokugqwala kwe-aluminium alloy. Xa zidityaniswe neemfuno zokwenyani zemveliso zamashishini, umxholo wezinto ezilandelelanayo ezifana neFe, Ca, V, Na, Si, kunye neNi kwi-petroleum coke kufuneka ulinganiselwe.
Izinto eziguquguqukayo
Umthamo ophezulu wokuguquguquka kwe-petroleum coke ubonisa ukuba inxalenye engaphekwanga ithwalwa kakhulu. Umthamo ophezulu wokuguquguquka uya kuchaphazela uxinano lokwenyani lwe-calcined coke kwaye unciphise isivuno sokwenyani se-calcined coke, kodwa ubungakanani obufanelekileyo bomxholo wokuguquguquka bunceda ekuguquguqukeni kwe-petroleum coke. Emva kokuba i-petroleum coke iguquguquke kubushushu obuphezulu, umxholo wokuguquguquka uyancipha. Ekubeni abasebenzisi abahlukeneyo benolindelo olwahlukileyo lomxholo wokuguquguquka, kunye neemfuno zokwenyani zabavelisi kunye nabasebenzisi, kuchazwe ukuba umxholo wokuguquguquka akufuneki udlule kwi-10%-12%.
Uthuthu
Ukungcola kwezimbiwa okungatshiyo (izinto ezilandelelanayo) okuseleyo emva kokuba inxalenye etshayo ye-petroleum coke itshiswe ngokupheleleyo phantsi kobushushu obuphezulu be-850 degrees kunye nokujikeleza komoya kubizwa ngokuba luthuthu. Injongo yokulinganisa uthuthu kukuchonga umxholo wokungcola kwezimbiwa (izinto ezilandelelanayo) Ingakanani, ukuze kuvavanywe umgangatho we-petroleum coke. Ukulawula umxholo wothuthu kuya kulawula nezinto ezilandelelanayo. Ubuninzi bothuthu ngokuqinisekileyo buya kuchaphazela umgangatho we-anode ngokwayo kunye ne-aluminium ephambili. Xa idibene neemfuno zokwenyani zabasebenzisi kunye nemeko yokwenyani yemveliso yamashishini, kuchazwe ukuba umxholo wothuthu akufuneki udlule kwi-0.3%-0.5%.
Ukufuma
Imithombo ephambili yomxholo wamanzi kwi-petroleum coke: Okokuqala, xa i-coke tower ikhutshwa, i-petroleum coke ikhutshwa iye echibini le-coke phantsi kwesenzo sokusika nge-hydraulic; okwesibini, ngokwembono yokhuseleko, emva kokuba i-coke ikhutshwe, i-petroleum coke engakhange ipholiswe ngokupheleleyo kufuneka itshizwe ukuze iphole. Okwesithathu, i-petroleum coke ibekwe emoyeni ovulekileyo kwiichibi ze-coke nakwiindawo zokugcina amanzi, kwaye umxholo wayo wokufuma uya kuchaphazeleka yindalo esingqongileyo; okwesine, i-petroleum coke inezakhiwo ezahlukeneyo kunye namandla ahlukeneyo okugcina umswakama.
Umxholo weCoke
Ubungakanani be-petroleum coke bunempembelelo enkulu kwimveliso yokwenyani, ukusetyenziswa kwamandla kunye ne-calcined coke. I-petroleum coke enomxholo ophezulu we-powder coke inokulahleka okukhulu kwekhabhoni ngexesha lenkqubo ye-calcination. Ukudubula kunye nezinye iimeko kunokukhokelela kwiingxaki ezinje ngokuphuka kwangoko komzimba wesithando, ukutsha kakhulu, ukuvaleka kwevalvu yokukhupha, ukucolwa okulula kwe-calcined coke, kwaye kuchaphazele ubomi be-calciner. Kwangaxeshanye, uxinano lokwenyani, uxinano lwempompo, i-porosity, kunye namandla e-calcined coke, i-Resistivity kunye nokusebenza kwe-oxidation kunempembelelo enkulu. Ngokusekelwe kwimeko ethile yomgangatho wemveliso ye-petroleum coke yasekhaya, ubungakanani be-powder coke (5mm) bulawulwa ngaphakathi kwe-30%-50%.
Umxholo we-coke odutyulweyo
I-Shot coke, eyaziwa ngokuba yi-spherical coke okanye i-shot coke, iqinile, ixinene kwaye ayinazimbobo, kwaye ikhona ngohlobo lweziqwenga ezinyibilikisiweyo ezingqukuva. Umphezulu we-shot coke uthambile, kwaye ulwakhiwo lwangaphakathi aluhambelani nolwangaphandle. Ngenxa yokungabikho kwemingxuma kumphezulu, xa kuxutywa nge-binder coal tar pitch, kunzima ukuba i-binder ingene ngaphakathi kwe-coke, nto leyo ebangela ukuba i-bonding ikhululeke kwaye ithambekele kwiziphene zangaphakathi. Ukongeza, i-thermal expansion coefficient ye-shot coke iphezulu, nto leyo enokubangela ukuba i-thermal shock cracks xa i-anode ibhakiwe. I-petroleum coke esetyenziswa kwi-anode ebhakiweyo kwangaphambili akufuneki ibe ne-shot coke.
Catherine@qfcarbon.com +8618230208262
Ixesha lokuthumela: Disemba-20-2022