Muva nje, ulayini wokukhiqiza i-steel slag powder onamandla amakhulu okukhiqiza e-China waqedwa futhi waqala ukusebenza eShagang Group. Isamba sokutshalwa kwezimali kwale phrojekthi singama-yuan ayizigidi eziyi-170, futhi kulinganiselwa ukuthi amathani angama-600000 we-steel slag powder azokhiqizwa minyaka yonke. Ngenxa yokuqina okuphezulu kwe-slag yensimbi, ububanzi bezinhlayiyana zogayo olujwayelekile lwebhola kanye ne-roller mill kusengaba ngu-6-8mm ngemva kokuchotshozwa, okudinga ukuthi amabhizinisi okukhiqiza usimende acubungule futhi. Iinsimbi slagmpo roller mill isetshenziswa emgqeni wokukhiqiza wensimbi ye-slag mill yaseShagang, "eshiya" ngokuqondile isixhumanisi esiphakathi. Ubukhulu be-diameter ye-slag yensimbi bungafinyelela cishe ku-0.003mm. Ngesisekelo sokunciphisa ukusetshenziswa kwamandla kwenqubo, inganciphisa izingozi zemvelo, ithuthukise inani elengeziwe lomkhiqizo, iqhubeke nokugqugquzela ukuguqulwa kwe-steel slag kusuka "kudoti oqinile" kuya "kumkhiqizo", futhi kufinyelele "ukuthuthukiswa okuphindwe kabili" kwezinzuzo zokuvikelwa kwemvelo kanye nezinzuzo zezomnotho. Lokhu kubonisa ukuthi isigayo se-steel slag sinethuba elihle lemakethe. Njengochwepheshe bensimbi ye-slag yokugaya mpo, i-HCMilling(Guilin Hongcheng) izokwethula ukusetshenziswa kwemakethe kwesigayo sensimbi ye-slag mpo.
Kuyaqondakala ukuthi "ukugaya i-steel slag" kuwumsebenzi owaziwa yimboni wokuvikela imvelo, iphrojekthi yezomnotho engasetshenziswa kabusha, kanye "nokweqa kwesibili" kokwelashwa kwe-slag yensimbi e-Shagang. Ngo-2020, i-Shagang izokwakha iphrojekthi enkulu kunazo zonke yokwelapha i-slag yensimbi engamathani ayizigidi ezingu-3.3 e-China, futhi izuze ukusetshenziswa okuphelele kwe-100% kwe-slag yensimbi ngokuhlukana kazibuthe, ukuchotshozwa, ukugaya izinduku, ukuhlola nokunye ukucubungula okujulile. Ekupheleni kuka-Okthoba wonyaka ofanayo, cishe amathani angu-600 we-slag yensimbi evela eShagang afakwa ngempumelelo kuphrojekthi yokuguqulwa kwesipontshi semigwaqo kamasipala yaseZhangjiagang. Ngemva kweinsimbi slag ukugayaisigayoumugqa wokukhiqiza usetshenziswa, i-slag yensimbi ishintshile ngempela isuka "kudoti oqinile" yaba "umkhiqizo", futhi izinsiza zokuvuselela ziye "zomiswa futhi zakhanywa", zandisa uchungechunge lwezomnotho oluluhlaza. "Ububanzi bezinto zokusetshenziswa bungu-6-8mm, bese siqhubeka sizigaya nge-steel slag vertical roller mill, futhi ukucoleka kufinyelela ku-0.003mm ububanzi." Ngokusho kukachwepheshe ovela endaweni yokusebenzela yokudiliza ye-Shagang New Materials Co., ulayini ojwayelekile wokukhiqiza i-steel slag ungamathani angama-300000 kuyo yonke imboni. Ulayini wethu omusha wokukhiqiza amathani angu-600000 uyireferensi yayo yonke imboni futhi usiza kakhulu ekwakhiweni kwezinkambiso ezisebenzayo zemboni.
Ucwaningo mayelana nokuthuthukiswa nokusetshenziswa kwe-steel slag micro powder yisihloko esishisayo esilandela ukusetshenziswa okukhulu kwe-slag micro powder eminyakeni yamuva. Ukukhiqizwa kwe-micro powder noma i-composite micro powder nge-steel slag kungaqeda umehluko ekugayeni ekukhiqizeni usimende we-steel slag. Lapho i-slag yensimbi igaywe ku-fineness ethileinsimbi slag mpo roller mill, lapho indawo ethize ingaphezulu kuka-400m2Kg, insimbi yensimbi ingasuswa ngezinga elikhulu kakhulu. Isakhiwo sekristalu sezinto ezibonakalayo sihlelwa kabusha ngokugaya okuhle kakhulu, futhi isimo sezinhlayiyana siyashintsha, Ingaphezulu lingathuthukisa futhi livuselele umsebenzi we-steel slag, linikeze ukudlala ezicini ze-hydraulic cementing materials. Lapho i-steel slag powder kanye ne-slag powder kuhlanganiswa, banenzuzo ye-superposition. I-calcium hydroxide eyakhiwe lapho i-C3S ne-C2S ku-steel slag ithola amanzi iyisicupha esiyisisekelo se-slag. Idatha yakamuva ibonisa ukuthi nakuba ukusetshenziswa kwe-slag powder njengengxube kakhonkolo kungathuthukisa amandla kakhonkolo futhi kuthuthukise ukusebenza nokuqina kwengxube kakhonkolo, i-alkalinity ephansi ye-blast furnace slag (% CaO+% MgO)/(% SiO2+% Al2O3), mayelana ne-0.9 ~ 1.2, izonciphisa kakhulu i-alkalinity ye-alkalinity ye-liquid reinfoment ku-concrete ye-concrete reinfoment (pH<12.4 kulula ukuyonakalisa), futhi ibangele ukugqwala kokuqiniswa kukhonkolo. Ngaphezu kwalokho, i-blast furnace slag ingumzimba we-vitreous one-C3AS ne-C2MS2 njengezingxenye eziyinhloko. I-gellability ye-granulated blast furnace slag powder ivela ekuhlakazweni kwesakhiwo se-slag vitreous. Imikhiqizo ye-hydration ingakhiwa kuphela ngaphansi kwesenzo se-Ca (OH) 2. I-slag yensimbi ine-alkalinity ephezulu (% CaO +% MgO) / (% SiO2), cishe ngo-1.8 ~ 3.0. Amaminerali ngokuyinhloko i-C3S, i-C2S, i-CF, i-C3RS2, i-RO, njll. I-fCaO namaminerali asebenzayo e-steel slag akhiqiza i-Ca (OH) 2 lapho ehlangana namanzi, okuthuthukisa i-alkalinity ye-liquid yesistimu kakhonkolo, Ingasetshenziswa njenge-activator alkaline ye-slag powder. Ukhonkolo oxutshwe ne-steel slag powder unezici zamandla aphezulu esikhathini esizayo. Ngakho-ke, i-steel slag kanye ne-slag composite powder ingafunda komunye nomunye, futhi ukusebenza kuphelele kakhulu.
Inqubo yokukhiqiza ye insimbi slag mpo roller mill ihlanganiswe nokuchotshozwa, ukugaya, ukomisa kanye nokukhethwa kwe-powder, okubonakala ngokusetshenziswa kwamandla aphansi, ukusebenza kahle kokuvala uphawu, indawo encane ephansi, inqubo elula, njll. Ukulungiswa okudingekayo nokusabalalisa usayizi wezinhlayiyana kungatholakala ngokulungisa ijubane elijikelezayo le-powder concentrator, izinga lokugeleza komoya le-fan yokugaya kanye nokucindezela kokugaya. Ngokushintshwa kwezindlela zokuklama kanye nemiqondo kanye nobuchwepheshe benqubo obukhula ngokukhula, ukutshalwa kwezimali kwesistimu yokugaya i-roller kwehla kakhulu, ngokuyisisekelo elingana noma ephakeme kancane kunaleyo yesistimu yokugaya ibhola lesekhethi evaliwe. Ngenxa yezinzuzo zayo ekusebenzeni nasekusetshenzisweni kwamandla, uhlelo luzosetshenziswa kabanzi. I-HCMilling(Guilin Hongcheng) iyisigayo somshini wensimbi oqondile we-slag. EyethuI-HLM yensimbi slagmpo roller mill iyimishini ekahle yokusiza isigayo se-roller mpo ukuze sandise imakethe ye-steel slag powder. Ingakwazi ukugaya i-steel slag powder ngendawo ephakeme ethize engaphezu kuka-700, igcine izinqubo ezimbili zokugaya kwangaphambili nokugaya okokugcina, futhi iqedele ukukhiqizwa kwe-steel slag powder ngesinyathelo esisodwa.
Uma unezidingo ezifanele, sicela usithinte ukuze uthole imininingwane yesisetshenziswa.
Isikhathi sokuthumela: Dec-04-2022
