Ukwelashwa kanye nokusetshenziswa okuphelele kwe-steel slag iron slag

Phakathi kwama-slags ensimbi, kukhona ikakhulukazi i-slag yokucisha amanzi esithandweni somlilo, i-steel slag, i-blast furnace heavy slag, njll., lapho ukuqhuma kwesithando somlilo kucisha i-slag kanye nezinga lokusebenzisa isithando somlilo esindayo liphezulu, kuyilapho izinga lokusebenzisa i-steel slag liphansi, cishe ama-20% kuphela. Ukupakishwa kwesikhathi eside kwe-slag ye-metallurgical engasetshenzisiwe akusetshenziswa ngokugcwele ngesikhathi. Ngakolunye uhlangothi, i-slag ye-metallurgical izolahlekelwa kancane kancane umsebenzi wayo futhi kuyoba nzima ukuyisebenzisa kabusha. Ngakolunye uhlangothi, i-metallurgical slag izothatha indawo enkulu futhi izongcolisa kakhulu imvelo. Indlela yokusebenzisa kakhulu i-slag ye-metallurgical ibe yinto ehamba phambili kuzo zonke izinkampani zensimbi.

1.1 Isiqondiso sokuthuthukiswa kokwelashwa kwensiza ye-metallurgical slag kanye nokusetshenziswa okuphelele

Ukwelashwa kwensiza ye-metallurgical slag kanye nokusetshenziswa okuphelele kubhekisela ekuhlukaniseni kazibuthe nokususwa kwensimbi ku-slag ye-metallurgical kanye nokusetshenziswa kwemisila ekukhiqizeni izinto zokwakha. Insimbi engcolile etholwe ku-slag ye-metallurgical ingabuyiselwa endaweni yensimbi ukuze incibilikiswe futhi isetshenziswe kabusha; izinsalela ezitholwe ngozibuthe zingasetshenziswa ukukhiqiza izinto ezixutshwe usimende, ama-substrates omgwaqo, usimende wokwakha, udaka oluxutshwe ngomumo, izitini zikakhonkolo, izitini ezinembobo, i-Metallurgical slag autoclaved aerated blocks nezinye izinto zokwakha.

1.2 Ukwelashwa kwensiza ye-Metallurgical slag kanye nokusetshenziswa okuphelele nokonga amandla nokuvikelwa kwemvelo

Indlela yokukhiqiza izinto zokwakha ezonga amandla nemvelo ngokusebenzisa i-metallurgical slag ukusebenzisa izinsiza ezivuselelekayo ezifana ne-metallurgical slag, i-blast furnace gas kanye nemfucumfucu yokushisa ekhiqizwa imboni yensimbi ukukhiqiza inqubo entsha yokonga amandla, izinto zokwakha ezinobungani bemvelo nezishintshwayo ezinikeza amandla aphezulu. I-slag yensimbi ngemva kokuchoboza ukuhlukaniswa kazibuthe kanye nensimbi inamaminerali amaningi njenge-CaO yamahhala, futhi lawa maminerali ane-hydraulic. Uma i-steel slag isetshenziswa kanye ne-blast furnace water-quenched slag, i-Ca(OH)2 ezungezwe i-steel slag ingakhuthaza i-alkaline slag, futhi i-slag ingaqeda umphumela omubi we-CaO yamahhala ku-slag yensimbi futhi ithuthukise ukuqina komthamo womkhiqizo. . I-slag esindayo ngemva kokuchoboza ukuhlukaniswa kazibuthe kanye nokususwa kwensimbi inezici zokuminyana okuhle nokuzinza kwevolumu enhle, futhi ingangena esikhundleni setshe letshebesi nesihlabathi esiphuzi njengesamba esimahhadla nesicolekileyo sezinto zokwakha. Kuleli phepha, izinto ezixubile ze-steel slag, izitini zikakhonkolo ze-slag slag kanye ne-metallurgical slag autoclaved aerated blocks zithathwa njengezibonelo zokuhlaziya ubudlelwano phakathi kokusetshenziswa okuphelele kwe-metallurgical slag nokonga amandla nokuvikelwa kwemvelo.

(1) Ukuhlaziya okonga amandla nokuvikelwa kwemvelo kwezinto ezixubile ze-slag

I-steel slag isetshenziswe embonini kasimende iminyaka engaphezu kwengama-30 eChina. Ngokwezibalo ezingaphelele, ekhaya, amathani ayizigidi eziyi-10 ensimbi angasetshenziswa minyaka yonke. Ingxube ye-steel slag esetshenziselwa ukukhiqizwa kukasimende kumele yomiswe. Njengamanje, indlela evamile yokomisa iwukuthutha ingxube yensimbi ye-slag equkethe cishe u-12% wamanzi ukuya esitshalweni sikasimende ngemoto, bese usebenzisa ukushiswa kwamalahle ukukhiqiza umoya oshisayo ukuze omiswe. Le nqubo inyusa inani lokuthuthwa kwezimoto ngo-10% ngakolunye uhlangothi kanye nezinsiza zamalahle ngakolunye. Namuhla, indlela yezomnotho yokusebenzisa i-steel slag njengengxube kasimende iwukusebenzisa igesi ye-blast furnace, umkhiqizo okhiqizwa yizinsimbi, ukuze yome khona lapho, engasindisa kakhulu umthamo wokuhamba wezimoto namafutha, amalahle nokunye. izinsiza. Ngokusebenzisa i-blast furnace gas ekhiqizwa izinsimbi, i-blast furnace gas yomiswa endaweni. Umswakama wokuqala ngethoni ngayinye ye-slag yensimbi yomile ku-2% womswakama wokugcina, futhi i-150 cubic metres ye-blast furnace gas iyadingeka (inani le-calorific liyi-3500 kcal / m3). Unyaka ngamunye, amathani ayizigidi ezingu-10 we-steel slag izinto ezixubile zidinga ama-cubic metres angu-1.5 billion wegesi yomlilo yokuqhuma, okulingana namathani angu-750,000 wamalahle ajwayelekile (inani le-calorific lamalahle ajwayelekile lingaba ngu-7000 kcal / kg); Amathani ayizigidi eziyi-10 wezinto ezixubile ze-steel slag ngonyaka (ibanga angamakhilomitha angama-30) Ingonga amalitha angama-450,000 kawoyela okuthutha izimoto (amaloli athwala kanzima adla amalitha angu-1.5/100 ithani ngalinye likawoyela we-steel slag) kanye namalahle ukusetshenziswa kwamathani angama-750,000.

(2) Ukuhlaziya okonga amandla nokuvikelwa kwemvelo kwezitini zekhonkrithi ze-steel slag

Isitini sikakhonkolo se-steel slag slag senziwa ikakhulukazi ngensimbi ye-slag slag masonry usimende njengento yokufaka usimende, i-slag yensimbi, i-slag yokucisha amanzi kanye nokuqhuma kwesithando somlilo esindayo njenge-aggregate, bese kunezelwa inani elithile lezithasiselo, ukucindezelwa okomile nokwakhiwa, insimbi. isigayo Isitini se-metallurgical slag esikhiqizwa indlela yokwelapha okusala kokushisa kwesitimu. Inqubo yokukhiqiza yaqalwa emgqeni wokukhiqiza izinto zokwakha ze-Xinyu Iron and Steel Co., Ltd. ngo-2006. Kuye kwafakazelwa inkolelo-mbono nokusebenza ukuthi izinkomba zokusebenza zesitini sikakhonkolo se-slag slag esikhiqizwa inqubo zingcono izidingo ezijwayelekile zikazwelonke, futhi izindleko zomkhiqizo ziphansi. Ngaphezu kuka-90% wezinto zokusetshenziswa zokukhiqiza ziyi-metallurgical slag elahlwe isitshalo sensimbi, futhi isitimu sokushisa sensimbi sisetshenziselwa ukugcinwa. Ngokuhambisana nezinqubomgomo zezimboni zikazwelonke zokongiwa kwamandla kanye nokuvikelwa kwemvelo. Sithatha i-Xinyu Iron and Steel Co., Ltd. njengesibonelo somugqa wokukhiqiza izitini ze-slag zensimbi eziphuma minyaka yonke zama-cubic metres angu-300,000, ingadla amathani angu-110,000 we-slag yensimbi, amathani angu-110,000 we-slag kanye namathani angu-220,000 esindayo. i-slag ngonyaka. Ingasebenzisa inani elikhulu le-metallurgical slag yezigayo zensimbi. Futhi ukhiqize izinzuzo ezinhle zezomnotho.

Izinto zika-cementitious ezisetshenziswa ekukhiqizeni izitini zekhonkrithi ze-slag slag zenziwe nge-metallurgical slag self-contained M22.5 usimende wokwakha, ususa isidingo se-high-energy PS32.5 noma usimende ophelile ophelile. Isamba sezitini zikakhonkolo ze-slag slag zisebenzisa i-metallurgical slag yemboni yensimbi esizeni, enganciphisa umthamo wokumba wezimayini kanye nevolumu yokuthutha imoto engamathani angu-360,000 e-sandstone njalo ngonyaka. Ukugcinwa kwezitini zikakhonkolo ze-steel slag slag kugcinwa isitimu sokushisa semfucuza yensimbi, esisindisa izinsiza zamalahle. Ulayini wokukhiqiza uhlanganisa ukusetshenziswa okuphelele kwe-metallurgical slag, imfucumfucu yokushisa kwemfucumfucu, igesi yesithando somlilo nezinye izinsiza ezivuselelekayo. Ingasindisa ukuthuthwa kwesihlabathi namatshe (ngebanga lamakhilomitha angu-30) futhi isebenzise amalitha angu-162,000 kawoyela ngonyaka (amaloli athwala kanzima adla i-1.5 ngethani lamafutha ensimbi yensimbi). l / 100 km); ingonga amathani angu-90,000 kasimende ophelile ngonyaka, okulingana namathani angaba ngu-10,000 amalahle ajwayelekile (110 kg / ton of Cement); ngesikhathi esifanayo ukunciphisa ukukhiqizwa nokusetshenziswa kwezitini zobumba eziyizigidi ezingu-200 ngonyaka, okulingana Amalahle ajwayelekile angamathani angu-30,000 (ukusetshenziswa kwamalahle ngezitini zobumba yi-100 kg/m3). Uma izitshalo zensimbi ezinkulu eziyi-100 ezweni lonke zakha umugqa wokukhiqiza wonyaka wama-cubic metres angama-300,000 wezitini ze-steel slag slag, ukusetshenziswa konyaka kwe-metallurgical slag kuzoba amathani ayizigidi ezingama-44, ukonga amalitha ayizigidi eziyi-16.2 kawoyela ezokuthutha kanye namathani ayizigidi ezi-4 amalahle. Ngale ndlela, i-slag ye-metallurgical elahliwe isitshalo sensimbi isetshenziswa ngobuningi, futhi imakethe yezitini zobumba ithathelwa indawo kakhulu, futhi umhlaba otshaliwe uvikelekile. Ngesikhathi esifanayo, njengoba ukhonkolo we-steel slag uyisitini esingashisi, ukonga amandla kungafinyelelwa.

(3) Ukuhlaziya okonga amandla kanye nokuvikelwa kwemvelo kokukhiqizwa kwebhulokhi ye-aerated metallurgical slag

I-metallurgical slag autoclaved aerated block yenziwa ngokungeza i-slag yensimbi kanye ne-slag ku-slurry, yengeza isithako esiyinhlanganisela ye-powdery, inani elifanele le-gypsum ne-ejenti ekhiqiza igesi, futhi yengeze ngegesi, i-pre-culture, ukusika, i-autoclaving nezinye izinqubo. Imikhiqizo ye-Gas block. I-metallurgical slag ekhiqizwa inqubo inokusebenza okuhle kumabhulokhi okucindezela umusi kanye ne-aerating, ihlangabezana nezidingo zokwakhiwa kwezimboni nezomphakathi, futhi ingadla i-metallurgical slag ngobuningi obukhulu. Ngaphezu kuka-90% wezinto zokusetshenziswa ezisetshenziswa kule nqubo ziyi-metallurgical slag. Isitimu sikhiqizwa kusetshenziswa igesi ye-blast furnace, okuwumkhiqizo wensimbi, futhi izindleko zomkhiqizo ziphansi. Ulayini wokukhiqiza udla cishe ama-cubic metres ayizigidi ezingama-75 wegesi yokushisa yomlilo ngonyaka (inani lokushisa liyi-3200 kcal / cubic meter), elilingana namathani angama-34,000 wamalahle ajwayelekile (inani le-calorific lamalahle ajwayelekile angama-7000 kcal / kg). Ukuthatha i-Xiangtan Iron and Steel Group Co., Ltd. njengesibonelo sokukhiqizwa konyaka wama-cubic metres angu-300,000 we-metallurgical slag autoclaved aerated block production line, ingadla amathani angaba ngu-140,000 we-slag yensimbi kanye namathani angu-140,000 we-slag ngonyaka. Ingasebenzisa inani elikhulu le-metallurgical slag futhi ikhiqize umnotho omuhle. inzuzo. Uma izigayo zensimbi ezinkulu eziyi-100 ezweni zakha isilinganiso sama-cubic metres angu-300,000 we-metallurgical slag autoclaved aerated block production line, zingasebenzisa amathani angaba yizigidi ezingu-30 we-metallurgical slag, konga amathani ayizigidi ezingu-3.4 zamalahle ngonyaka.