I-Desulfurization gypsum yimveliso ye-gypsum yemveliso efunyenwe ngokususa i-sulfurizing kunye nokucoca igesi ye-flue eveliswe emva kokutshiswa kwamafutha anesulfure ngekalika ecocekileyo okanye i-limestone powder slurry.Ukwakhiwa kweekhemikhali zayo kufana ne-gypsum yendalo ye-dihydrate, ngokukodwa i-CaSO4 · 2H2O.Kungoku nje, indlela yokuvelisa umbane yelizwe lam isalawulwa ngamandla okwenziwa ngamalahle, kwaye i-SO2 ekhutshwa ngamalahle kwinkqubo yokuveliswa kwamandla obushushu ithatha ngaphezu kwama-50% ezinto ezikhutshwayo zonyaka zelizwe lam.Isixa esikhulu sokukhutshwa kwesulfure dioxide kubangele ungcoliseko olumandla lwendalo esingqongileyo.Ukusetyenziswa kobuchwephesha be-flue gas desulfurization ukuvelisa i-gypsum ye-desulfurized ngumlinganiselo obalulekileyo wokusombulula uphuhliso lobuchwepheshe lwamashishini anxulumene namalahle.Ngokwezibalo ezingaphelelanga, ukukhutshwa kwegypsum emanzi desulfurized kwilizwe lam kudlule kwi-90 yezigidi t/a, kwaye indlela yokusetyenzwa kwegypsum ye-desulfurized ikakhulu ifunjwe, engahlali nje emhlabeni, kodwa ibangela inkcitho enkulu yemithombo.
I-Gypsum inemisebenzi yobunzima bokukhanya, ukunciphisa ingxolo, ukuthintela umlilo, ukugquma kwe-thermal, njl.Ngoku, abaphengululi abaninzi baye benza uphando ngokutyabeka.Uphando lubonisa ukuba imathiriyeli yokutyatyekwa kwe-plaster inokwandiswa okuncane, ukusebenza kakuhle kunye neplastiki, kwaye inokutshintsha izinto zokutyabeka zendabuko zokuhombisa udonga lwangaphakathi.Uphononongo olwenziwe nguXu Jianjun kunye nabanye lubonise ukuba igypsum enesulfurized ingasetyenziselwa ukwenza izinto ezikhaphukhaphu eludongeni.Uphononongo olwenziwe nguYe Beihong kunye nabanye lubonise ukuba igypsum yokutyabeka eveliswe yigypsum enesulfurized ingasetyenziselwa umaleko wokutyabeka wecala elingaphakathi lodonga lwangaphandle, udonga lwangaphakathi lolwahlulo kunye nesilingi, kwaye inokusombulula iingxaki zomgangatho oqhelekileyo njengokuqotywa kunye nokuqhekeka udaka lwesintu lokutyabeka.I-gypsum yokutyabeka ekhaphukhaphu luhlobo olutsha lwemathiriyeli yokutyabeka ehambelana nokusingqongileyo.Yenziwe nge-hemihydrate gypsum njengeyona nto ingundoqo yesamente ngokongeza ii-aggregates ezilula kunye ne-admixtures.Xa kuthelekiswa nezinto zokutyabeka zesamente zemveli, akulula ukuqhekeka, ukunamathela Ukubopha okulungileyo, ukucutha okulungileyo, ukukhuselwa okuluhlaza kunye nokusingqongileyo.Ukusetyenziswa kwe-gypsum ye-desulfurized ukuvelisa i-hemihydrate gypsum ayisombululi kuphela ingxaki yokunqongophala kwemithombo yendalo ye-gypsum yokwakha, kodwa iphinda iqonde ukusetyenziswa kobutyebi be-gypsum e-desulfurized kwaye ifezekisa injongo yokukhusela i-ecological environment.Ngoko ke, ngokusekwe kuphononongo lwegypsum desulfurized, eli phepha livavanya ixesha lokumisa, amandla aguquguqukayo kunye namandla aCompressive, ukufunda izinto ezichaphazela ukusebenza kobunzima bokukhanya kwe-desulfurization gypsum mortar, kunye nokubonelela ngesiseko sethiyori kuphuhliso lokukhanya- ubunzima bokutyabeka desulfurization gypsum udaka.
1 umfuniselo
1.1 Iimathiriyeli ekrwada
I-Desulfurization gypsum powder: I-Hemihydrate gypsum eveliswe kwaye i-calcined nge-flue gas desulfurization technology, iipropati zayo ezisisiseko ziboniswa kwiThebhile 1. I-aggregate e-lightweight: i-microbeads e-vitrified isetyenziswa, kunye neempawu zayo ezisisiseko ziboniswa kwiThebhile 2. I-microbeads e-Vitrified ixutywe ngokulingana kwe-4. I-%, 8%, 12%, kunye ne-16% ngokusekwe kumlinganiselo wobunzima bodaka lwegypsum olulayitelwe ngesulfurized.
I-Retarder: Sebenzisa i-sodium citrate, uhlalutyo lweekhemikhali ezihlambulukileyo, i-sodium citrate isekelwe kumlinganiselo wobunzima be-desulfurization gypsum mortar, kunye nomlinganiselo wokuxuba ngu-0, 0.1%, 0.2%, 0.3%.
I-ether yeCellulose: sebenzisa i-hydroxypropyl methylcellulose (HPMC), i-viscosity yi-400, i-HPMC isekelwe kumlinganiselo wobunzima bodaka lwe-gypsum olulayishiweyo olulula, kunye nomlinganiselo wokuxuba ngu-0, 0.1%, 0.2%, 0.4%.
1.2 Indlela yokuvavanya
Ukusetyenziswa kwamanzi kunye nexesha lokumisela lokungaguquguquki okusemgangathweni kwe-gypsum ye-desulfurized kubhekiselele kwi-GB/T17669.4-1999 "Ukumiselwa kweePropati zeMpahla zePlasta yeSakhiwo seGypsum", kunye nexesha lokumiselwa kodaka lwegypsum olukhanyayo lubhekisa kwi-GB/T 28627- Ngo-2012 "Plastering Gypsum" yenziwa.
Amandla e-flexural kunye noxinzelelo lwe-gypsum ye-desulfurized aqhutywa ngokwe-GB / T9776-2008 "i-Building Gypsum", kunye neesampuli ezinobungakanani be-40mm × 40mm × 160mm zibunjwe, kwaye amandla e-2h kunye namandla omileyo alinganiswa ngokulandelanayo.Amandla aguquguqukayo kunye noxinzelelo lwe-light-weight plastered desulfurized gypsum mortar lwenziwa ngokwe-GB/T 28627-2012 "Plastering Gypsum", kwaye amandla okuphilisa kwendalo kwi-1d kunye ne-28d ilinganiswa ngokulandelanayo.
2 Iziphumo kunye nengxoxo
2.1 Impembelelo yesiqulatho somgubo wegypsum kwiipropathi zomatshini we-gypsum yokutyatyekwa okulula kwe-desulfurization
Isixa esipheleleyo se-gypsum powder, i-limestone powder kunye ne-lightweight aggregate yi-100%, kwaye inani le-fixed light aggregate kunye ne-admixture lihlala lingatshintshi.Xa inani le-gypsum powder liyi-60%, i-70%, i-80%, kunye ne-90%, i-desulfurization Iziphumo ze-flexural and compressive force of gypsum mortar.
Amandla aguquguqukayo kunye namandla acinezelayo omdaka wegypsum wokukhanya otyatyekiweyo ayanda ngokwabudala, nto leyo ebonisa ukuba iqondo le-hydration legypsum liba laneleyo ngokwabudala.Ngokunyuka kwe-desulfurized gypsum powder, amandla aguquguqukayo kunye namandla oxinzelelo lwe-gypsum elula yokufaka i-gypsum ibonise umgangatho ophakamileyo ophezulu, kodwa ukunyuka kwakuncinci, kwaye amandla oxinzelelo kwiintsuku ze-28 abonakala ngokucacileyo.Kwiminyaka ye-1d, amandla okuguquguquka kwe-gypsum powder axutywe ne-90% anyuke ngo-10.3% xa kuthelekiswa ne-60% ye-gypsum powder, kwaye amandla ahambelanayo anyuka nge-10.1%.Ngeentsuku ze-28, amandla okuguquguquka kwe-gypsum powder axutywe ne-90% anyuke ngo-8.8% xa kuthelekiswa ne-gypsum powder exutywe ne-60%, kwaye amandla ahambelanayo anyuka nge-2.6%.Ukushwankathela, kunokugqitywa ukuba inani le-gypsum powder linempembelelo engakumbi kumandla aguquguqukayo kunamandla oxinzelelo.
2.2 Impembelelo yesiqulatho esisindi esikhaphukhaphu kwiipropathi zomatshini zegypsum etyatyekwe ngesalufa
Isixa esipheleleyo se-gypsum powder, i-limestone powder kunye ne-lightweight aggregate yi-100%, kwaye inani le-gypsum powder elisisigxina kunye ne-admixture lihlala lingatshintshi.Xa ubungakanani be-microbeads vitrified yi-4%, 8%, 12%, kunye ne-16%, udaka olukhanyayo Iziphumo ze-flexural kunye noxinzelelo lwe-desulfurized gypsum mortar.
Kwangaxeshanye, amandla okuguquguquka kunye namandla acinezelayo odaka olutyatyekiweyo lwegypsum olukhanyayo lwehla ngokunyuka komxholo we-vitrified microbeads.Oku kungenxa yokuba uninzi lwee-microbeads ze-vitrified zinesakhiwo esingenanto ngaphakathi kwaye amandla azo aphantsi, nto leyo enciphisa amandla aguquguqukayo kunye noxinzelelo lwe-lightweight plastering gypsum mortar.Kwiminyaka ye-1d, amandla okuguquguquka kwe-16% ye-gypsum powder ancitshiswe ngu-35.3% xa kuthelekiswa ne-4% ye-gypsum powder, kwaye amandla ahambelanayo ancitshiswa nge-16.3%.Ngeentsuku ze-28, amandla e-flexural ye-16% ye-gypsum powder yancitshiswa ngu-24.6% xa kuthelekiswa ne-4% ye-gypsum powder, ngelixa amandla ahambelanayo ancitshiswa kuphela yi-6.0%.Ukushwankathela, kunokugqitywa ukuba umphumo womxholo we-vitrified microbeads kumandla we-flexural mkhulu kunoko kumandla oxinzelelo.
2.3 Impembelelo yesiqulatho se-retarder ekubekeni ixesha legypsum etyatyekiweyo eyenziwe ngesulfurized
I-dosage epheleleyo ye-gypsum powder, i-limestone powder kunye ne-lightweight aggregate yi-100%, kwaye i-dosage ye-gypsum powder esisigxina, i-limestone powder, i-lightweight aggregate kunye ne-cellulose ether ihlala ingatshintshi.Xa idosi yesodium citrate yi-0, 0.1%, 0.2%, 0.3%, iziphumo zexesha lokumisela ukukhanya okutyatyekwe desulfurized gypsum mortar.
Ixesha lokuqala lokumisela kunye nexesha lokugqibela lokumiselwa kodaka lwegypsum olukhanyayo olutyatyekiweyo zombini zonyuka ngokunyuka komxholo wesodium citrate, kodwa ukonyuka kwexesha lokumisela kuncinci.Xa umxholo we-citrate ye-sodium yi-0.3%, ixesha lokuqala lokumisela landisa i-28min, kwaye ixesha lokugqibela lokumisela landiswa yi-33min.Ukwandiswa kwexesha lokumisela kunokuba ngenxa yendawo enkulu ye-gypsum e-desulfurized, enokuthi ithathe i-retarder ejikeleze amasuntswana e-gypsum, ngaloo ndlela inciphisa izinga lokuchithwa kwe-gypsum kunye nokuvimbela i-crystallization ye-gypsum, okubangelwa ukungakwazi kwe-gypsum slurry. ukwenza inkqubo yolwakhiwo oluqinileyo.Yandisa ixesha lokumisela i-gypsum.
2.4 Impembelelo yesiqulatho se-cellulose ether kwiipropathi zoomatshini zegypsum etyatyekwe ngesalulo esilula.
I-dosage epheleleyo ye-gypsum powder, i-limestone powder kunye ne-lightweight aggregate yi-100%, kwaye i-dosage ye-gypsum powder esisigxina, i-limestone powder, i-lightweight aggregate kunye ne-retarder ihlala ingatshintshi.Xa idosi ye-hydroxypropyl methylcellulose yi-0, 0.1%, 0.2% kunye ne-0.4%, iziphumo ze-flexural kunye ne-compressive zamandla okukhanya okufakwe kwi-gypsum mortar.
Ngeminyaka eyi-1d, amandla okuguquguquka okukhanya okufakwe kwi-gypsum mortar yanda kuqala kwaye yehla ngokunyuka komxholo we-hydroxypropyl methylcellulose;kwi-28d yobudala, amandla aguquguqukayo okukhanya okudayiweyo kwe-gypsum mortar Ngokunyuka komxholo we-hydroxypropyl methylcellulose, amandla e-flexural abonisa umkhuba wokuqala wokunciphisa, emva koko ukhula kwaye uyancipha.Xa umxholo we-hydroxypropyl methylcellulose ngu-0.2%, amandla e-flexural afikelela kumlinganiselo ophezulu, kwaye adlula amandla ahambelanayo xa umxholo we-cellulose u-0. Kungakhathaliseki ukuba iminyaka eyi-1d okanye i-28d, amandla okunyamezela okukhanya okufakwe kwi-gypsum mortar ayancipha kunye ukwanda komxholo we-hydroxypropyl methylcellulose, kunye ne-trend ehambelanayo yokuncipha ibonakala ngokucacileyo kwi-28d.Oku kungenxa yokuba i-ether ye-cellulose inesiphumo sokugcinwa kwamanzi kunye nokuqina, kwaye imfuno yamanzi yokuhambelana okusemgangathweni iya kwanda ngokunyuka kwe-cellulose ether content, okubangelwa ukwanda komlinganiselo we-samente yamanzi we-slurry structure, ngaloo ndlela ukunciphisa amandla. yesampum yegypsum.
3 Isiphelo
(1) Iqondo lokugalela amanzi kwi-gypsum enesulfurized liba laneleyo ngokwabudala.Ngokunyuka kwe-desulfurized gypsum powder content, amandla okuguquguquka kunye nokunyanzeliswa kwe-gypsum elula yokubeka i-gypsum ibonise ukunyuka okuphezulu, kodwa ukunyuka kwakuncinci.
(2) Ngokunyuka komxholo we-vitrified microbeads, amandla okuguquguquka kunye namandla acinezelayo obunzima bokukhanya obutyatyekiweyo be-gypsum mortar yehla ngokufanelekileyo, kodwa isiphumo somxholo we-microbeads eguquguqukayo sikhulu kuneso samandla oxinzelelo. amandla.
(3) Ngokunyuka komxholo we-sodium citrate, ixesha lokuqala lokumisela kunye nexesha lokugqibela lokumisela ukukhanya kwe-gypsum mortar eyenziwe nge-desulfurized desulfurized, kodwa xa umxholo we-sodium citrate uncinci, umphumo wokubeka ixesha awubonakali.
(4) Ngokunyuka komxholo we-hydroxypropyl methylcellulose, amandla okunyanzeliswa kokukhanya okufakwe kwi-gypsum mortar ye-desulfurized desulfurized kunciphisa, kodwa amandla aguquguqukayo abonisa umkhwa wokunyuka kokuqala kunye nokunciphisa kwi-1d, kwaye kwi-28d Ibonise umgangatho wokunciphisa kuqala, emva koko. ukwanda nokuhla.
Ixesha lokuposa: Feb-02-2023