Ukusetshenziswa kabusha kwe-metallurgical sludge

I-metallurgical sludge yesitshalo sensimbi ikakhulukazi ihlanganisa: udaka lwegesi yesithando somlilo, uthuli lokuguqulela nothuli nomlotha.

Phakathi nenqubo yokwenza insimbi, cishe u-2% wezinto ezingavuthiwe ezongezwe kusiguquli zizoguqulwa zibe uthuli, futhi inani lothuli lokuguqulela elikhiqizwayo lingaba ngu-20 kg/ton. Uthuli lokwenza insimbi ikakhulukazi lwakhiwe i-iron oxide, ebalwa ku-70% kuya ku-95%, nokunye ukungcola kwe-oxide (okufana ne-CaO, i-ZnO, njll.) kubalwa ku-5% kuya ku-30%. I-Converter steelmaking dust ngokuvamile isetshenziswa njengempahla eluhlaza yokucwilisa, kodwa i-zinc iyisici esiyingozi enqubweni yokwenza insimbi. Ngenxa yokuthi kulula ukwenza isithando somlilo ngesikhathi sokuncibilikiswa kwesithando somlilo, kuthinta ukugeleza kweshaji negesi, ngakho-ke uthuli lokuguqula lusenqubo yokuvuselela kabusha. Phakathi nendawo, insimbi ecolekileyo kanye nodaka lomsila ocebile u-C no-Zn lungatholwa ngendlela yokuzuza. Ukwengeza ukumiswa kodaka lwe-OG kungxube ye-sintering kunenzuzo ku-granulation yengxube. Ngokukhuphuka komthamo we-OG wodaka, isilinganiso se-particle ye-1mm ye-particle sincipha ngokushesha, okuzuzisa ukuthuthukisa ukutholakala kwegesi kwengxube, ukwandisa isivuno, ukunciphisa izindleko nokuvikela ingxube. ezizungezile.

Ukwakheka kodaka lwegesi yesithando somlilo ikakhulukazi cishe u-20% we-iron oxide, u-23% we-carbon, u-1% kuya ku-5% we-zinc, nama-oxide amaningi afana ne-CaO, i-SiO2 ne-Al2O3.

Isamba sothuli lwesithando somlilo esiqhumayo esikhiqiziwe singaba ngu-25 kg/t. Izinhlayiya zodaka lwe-blast furnace gas zicolekile, futhi ngaphansi kwama-mesh angama-200 zenza ngaphezu kuka-90%.

Udaka lwegesi yesithando somlilo lubonakala ngokuqukethwe okuphezulu kwe-zinc, insimbi, ikhabhoni, umswakama, izinhlayiya ezinhle, kanye ne-zinc ikakhulukazi ekhona ezinhlayiyeni ezincane. I-blast furnace gas kanye nomlotha wegesi kungakhishwa ngokusebenzisa indlela yokuhlukanisa i-hydraulic kanye ne-beneficiation ukuze kukhishwe udaka lomsila olucebile i-Zn kanye no-C njengezinsiza.

Njengamanje, izinga lokugaywa kabusha kothuli lwe-metallurgical emabhizinisini amakhulu e-China lingafinyelela ku-100%. Inqubo kanye nobuchwepheshe bodaka lwe-converter, umlotha wokukhipha uthuli nodaka lwegesi kusezingeni eliphezulu kakhulu, elingaletha izinzuzo ezinhle zezomnotho emabhizinisini.

Inqubo yokusetshenziswa okuphelele kwe-metallurgical sludge imi kanje:

(1) Inqubo eyomile yokuguqula udaka nomlotha wokukhipha uthuli

Isiguquli sodaka, uthuli lokususa umlotha → i-sintering return → imboni yokucubungula izinto ezixubile.

(2) Converter udaka inqubo emanzi

Ukuguqula udaka → ithange lokuxuba → ipayipi → ibhande eligoqayo → ukomisa udaka lokuguqulela + isikali se-iron oxide + isibophezelo samakhemikhali → ukugoqa nokuxuba → ukucindezela kube amabhola → ukomiswa esithandweni → amapellets.

(3) Inqubo yokusebenzisa udaka lwegesi

Udaka lwegesi → ukukhetha kabusha → impushana yensimbi → isitshalo sokucwilisa → udaka olunezinc → indlela yomlilo yokukhipha izinki.

Udaka lokwenza insimbi luwumkhiqizo wokususwa kothuli kusuka kuziguquli eziphephezelwa phezulu komoyampilo, futhi le nsiza iyigugu kakhulu. Ukwakheka kwamakhemikhali kushintshashintsha kakhulu, insimbi iphezulu, i-oxide eyisisekelo iphezulu, futhi usayizi wezinhlayiyana ulungile. I-sludge ingasetshenziswa njengempahla eluhlaza yokufaka i-sintering kanye ne-pelletizing, futhi ingashintsha ingxenye yempahla eluhlaza equkethe insimbi, futhi ihlanganise inani elincane le-binder kanye ne-solvent. Yehlisa izindleko futhi unciphise indima yokukhucululwa kwendle kwezitshalo zensimbi.

I-Sludge iyinsimbi enhle eluhlaza, izindlela ezilandelayo zokusetshenziswa:

1. Njengoba izithako zibuyela ngqo ku-sintering kanye nokusetshenziswa, kunomthelela omkhulu emvelweni, kulula ukwakha iqembu yedwa, ukuxuba akulula, okuthinta ukusebenza kokusetshenziswa okuphelele.

2. Ukuthuthwa kwepayipi ukuya endaweni ye-sinter ukuze kusetshenziswe i-shotcrete, i-sludge yokwenza insimbi ingagxiliswa ekugxiliseni okuqinile okuthile ebangeni elifushane, futhi ipayipi lithunyelwa endaweni yokucwilisa esikhundleni samanzi okwakheka acwilisayo.

3. Ama-pellets e-steel slag powder axutshwe bese ekhishwa ku-pellet ye-sludge nge-ejenti yokubumba ukuze asetshenziswe njengesipholisa se-steelmaking slag, futhi umphumela omuhle utholakala. Umbuso ubheka ukubaluleka okukhulu ekuvikelweni kwemvelo, futhi unamathisele ukubaluleka ekuphathweni kodaka lokuguquguqula olukhiqizwa amabhizinisi ensimbi. Ukukhula kwentengo yokuntuleka kwamandla kuthinta ukuthuthukiswa kwemboni yensimbi, futhi akunakugwenywa ukuthola izindlela nezindlela ezintsha.