I-desulfurization gypsum yi-gypsum yemveliso yemizi-mveliso efunyenwe ngokususa i-sulfur kunye nokucoca igesi ye-flue eveliswa emva kokutsha kwepetroli equlethe i-sulfur ngokusebenzisa i-lime okanye i-limestone powder slurry. Ukwakheka kwayo kweekhemikhali kufana noko kwe-gypsum yendalo ye-dihydrate, ikakhulu i-CaSO4·2H2O. Okwangoku, indlela yokuvelisa umbane yelizwe lam isalawulwa kukuveliswa kombane osebenzisa amalahle, kwaye i-SO2 ekhutshwa ngamalahle kwinkqubo yokuveliswa kombane oshushu ibangela ngaphezulu kwe-50% yokukhutshwa kombane ngonyaka kwilizwe lam. Isixa esikhulu sokukhutshwa kwe-sulfur dioxide sibangele ungcoliseko olukhulu lokusingqongileyo. Ukusetyenziswa kwetekhnoloji yokususa i-sulfurization yegesi ye-flue ukuvelisa i-gypsum engasetyenziswanga linyathelo elibalulekileyo lokusombulula uphuhliso lwetekhnoloji lwemizi-mveliso enxulumene nokususwa kwamalahle. Ngokwezibalo ezingaphelelanga, ukukhutshwa kwe-gypsum emanzi engasetyenziswanga e-sulfur kwilizwe lam kudlule kwi-90 yezigidi ze-t/a, kwaye indlela yokucubungula i-gypsum engasetyenziswanga i-sulfur ikakhulu iqokelelwe, engagcini nje ngokuthatha umhlaba, kodwa ikwabangela inkcitho enkulu yezixhobo.
I-Gypsum inemisebenzi yobunzima obulula, ukunciphisa ingxolo, ukuthintela umlilo, ukugquma ubushushu, njl. Ingasetyenziswa kwimveliso yesamente, ukuvelisa i-gypsum yokwakha, ubunjineli bokuhombisa kunye nezinye iinkalo. Okwangoku, iingcali ezininzi zenze uphando malunga ne-plaster yokuplasta. Olu phando lubonisa ukuba izinto zokuplasta ze-plaster zinokwandiswa kancinci, zisebenza kakuhle kwaye ziplastiki, kwaye zinokuthatha indawo yezinto zokuplasta zendabuko zokuhombisa udonga lwangaphakathi. Izifundo zikaXu Jianjun nabanye zibonise ukuba i-gypsum engasetyenziswanga i-sulfur ingasetyenziselwa ukwenza izinto zodonga ezilula. Izifundo zikaYe Beihong nabanye zibonise ukuba i-plaster gypsum eveliswa yi-plaster engasetyenziswanga ingasetyenziselwa umaleko wokuplasta wecala langaphakathi lodonga lwangaphandle, udonga lwangaphakathi kunye nesilingi, kwaye inokusombulula iingxaki eziqhelekileyo ezisemgangathweni ezifana nokuqhekeka nokuqhekeka kwe-plaster yendabuko yokuplasta. I-plaster gypsum esetyenziswanga lula luhlobo olutsha lwezinto zokuplasta ezinobuhlobo nokusingqongileyo. Yenziwe nge-hemihydrate gypsum njengezinto eziphambili zokusimende ngokongeza ii-aggregates ezilula kunye nezixube. Xa kuthelekiswa nezinto zokuplasta zesamente zendabuko, akulula ukuqhekeza, ukunamathela Ukubopha okuhle, ukuncitshiswa okuhle, ukhuseleko oluluhlaza kunye nokusingqongileyo. Ukusetyenziswa kwe-gypsum e-desulfurized ukuvelisa i-hemihydrate gypsum akusombululi nje kuphela ingxaki yokunqongophala kwezixhobo ze-gypsum zokwakha zendalo, kodwa kukwaqonda ukusetyenziswa kwezixhobo ze-gypsum e-desulfurized kwaye kufezekisa injongo yokukhusela okusingqongileyo. Ke ngoko, ngokusekelwe kuphononongo lwe-gypsum e-desulfurized, eli phepha livavanya ixesha lokuseta, amandla e-flexural kunye namandla okucinezela, ukufunda izinto ezichaphazela ukusebenza kwe-light-weight plastering desulfurization gypsum mortar, kunye nokubonelela ngesiseko sethiyori sokuphuhliswa kwe-light-weight plastering desulfurization gypsum mortar.
Uvavanyo olu-1
1.1 Izinto ezisetyenziswa ngokuqhelekileyo
Umgubo wegypsum we-desulfurization: I-gypsum ye-hemihydrate eveliswa kwaye i-calcined ngetekhnoloji ye-flue gas desulfurization, iimpawu zayo ezisisiseko ziboniswe kwiTheyibhile 1. I-aggregate elula: kusetyenziswa ii-microbeads ze-vitrified, kwaye iimpawu zayo ezisisiseko ziboniswe kwiTheyibhile 2. Ii-microbeads ze-vitrified zixutywe ngomlinganiselo we-4%, 8%, 12%, kunye ne-16% ngokusekelwe kumlinganiselo wobunzima be-motar ye-gypsum ekhaphukhaphu efakwe i-plastered.
I-Retarder: Sebenzisa i-sodium citrate, uhlalutyo lweekhemikhali kunye ne-reagent ecocekileyo, i-sodium citrate isekelwe kumlinganiselo wobunzima bodaka olukhanyayo lwe-plastering desulfurization gypsum mortar, kwaye umlinganiselo wokuxuba yi-0, 0.1%, 0.2%, 0.3%.
I-Cellulose ether: sebenzisa i-hydroxypropyl methylcellulose (HPMC), i-viscosity yi-400, i-HPMC isekelwe kumlinganiselo wobunzima bomdaka we-gypsum ofakwe i-plastered light plastered, kwaye umlinganiselo wokuxuba yi-0, 0.1%, 0.2%, 0.4%.
1.2 Indlela yovavanyo
Ukusetyenziswa kwamanzi kunye nexesha lokubeka ukuhambelana okuqhelekileyo kwe-gypsum e-desulfurized kubhekisa kwi-GB/T17669.4-1999 "Ukumiselwa kweePropati zoBume bePlasta yeGypsum yokwakha", kunye nexesha lokubeka iplasta ekhanyayo i-drywall gypsum mortar ibhekisa kwi-GB/T 28627-2012 "I-Plastering Gypsum" iyenziwa.
Amandla okugoba kunye nokucinezela kwegypsum e-desulfurized enziwa ngokwe-GB/T9776-2008 “Building Gypsum”, kwaye iisampuli ezinobukhulu obuyi-40mm×40mm×160mm ziyabunjwa, kwaye amandla eeyure ezi-2 kunye namandla omileyo alinganiswa ngokwahlukeneyo. Amandla okugoba kunye nokucinezela kwe-motar ye-gypsum e-desulfurized e-plastered elula aqhutywa ngokwe-GB/T 28627-2012 “Plastering Gypsum”, kwaye amandla okuphilisa ngokwendalo kwi-1d kunye ne-28d alinganiswa ngokwahlukeneyo.
2 Iziphumo kunye nengxoxo
2.1 Impembelelo yomxholo womgubo we-gypsum kwiimpawu zoomatshini ze-plastering elula ye-desulfurization gypsum
Isixa sisonke se-gypsum powder, i-limestone powder kunye ne-lightweight aggregate yi-100%, kwaye isixa se-fixed light aggregate kunye ne-addiction ayikatshintshi. Xa isixa se-gypsum powder singama-60%, 70%, 80%, kunye nama-90%, i-desulfurization iphumela kumandla e-flexural kunye ne-compressive e-gypsum mortar.
Amandla okugoba kunye namandla okuxinanisa e-plastered gypsum mortar ekhaphukhaphu ekhaphukhaphu ayanda ngokukhula, nto leyo ebonisa ukuba i-hydration degree ye-gypsum iyanela ngokukhula. Ngokukhula kwe-desulfurized gypsum powder, amandla okugoba kunye namandla okuxinanisa e-lightweight plastering gypsum abonise ukunyuka ngokubanzi, kodwa ukunyuka bekuncinci, kwaye amandla okuxinanisa kwiintsuku ezingama-28 ayecacile kakhulu. Kwiminyaka yoku-1, amandla okugoba e-gypsum powder exutywe ne-90% anyuke nge-10.3% xa kuthelekiswa naleyo ye-60% gypsum powder, kwaye amandla okuxinanisa ahambelanayo anyuke nge-10.1%. Kwiminyaka engama-28, amandla okugoba e-gypsum powder exutywe ne-90% anyuke nge-8.8% xa kuthelekiswa naleyo ye-gypsum powder exutywe ne-60%, kwaye amandla okuxinanisa ahambelanayo anyuke nge-2.6%. Ukuqukumbela, kunokugqitywa ukuba ubungakanani be-gypsum powder bunempembelelo enkulu kumandla okuxinanisa kunamandla okuxinanisa.
2.2 Impembelelo yomxholo we-aggregate okhanyayo kwiimpawu zoomatshini ze-gypsum ekhaphukhaphu efakwe i-plastered desulfurized
Isixa sisonke se-gypsum powder, i-limestone powder kunye ne-lightweight aggregate yi-100%, kwaye isixa se-fixed gypsum powder kunye nomxube asitshintshi. Xa isixa se-vitrified microbeads siyi-4%, 8%, 12%, kunye ne-16%, i-light plaster Iziphumo zamandla e-flexural kunye ne-compressive ye-desulfurized gypsum mortar.
Kwangelo xesha linye, amandla okuguquguquka kunye namandla oxinzelelo lwe-plastered gypsum mortar ekhaphukhaphu e-desulfurized light plastered anciphile ngokonyuka komxholo we-vitrified microbeads. Oku kungenxa yokuba uninzi lwee-vitrified microbeads zinesakhiwo esingenanto ngaphakathi kwaye amandla azo aphantsi, nto leyo enciphisa amandla okuguquguquka kunye noxinzelelo lwe-plastered gypsum mortar ekhaphukhaphu. Kwiminyaka yoku-1, amandla okuguquguquka e-16% gypsum powder ancitshiswe ngama-35.3% xa kuthelekiswa nalawo e-4% gypsum powder, kwaye amandla oxinzelelo ahambelanayo ancitshiswe ngama-16.3%. Kwiminyaka engama-28, amandla okuguquguquka e-16% gypsum powder ancitshiswe ngama-24.6% xa kuthelekiswa nalawo e-4% gypsum powder, ngelixa amandla oxinzelelo ahambelanayo ancitshiswe ngama-6.0% kuphela. Ukuqukumbela, kunokugqitywa ukuba isiphumo somxholo we-vitrified microbeads kumandla okuguquguquka sikhulu kuneso kumandla oxinzelelo.
2.3 Impembelelo yomxholo we-retarder kwixesha lokuseta i-gypsum ekhaphukhaphu efakwe i-plastered desulfurized
Idosi iyonke ye-gypsum powder, i-limestone powder kunye ne-aggregate elula yi-100%, kwaye idosi ye-fixed gypsum powder, i-limestone powder, i-aggregate elula kunye ne-cellulose ether ayitshintshi. Xa idosi ye-sodium citrate iyi-0, 0.1%, 0.2%, 0.3%, iziphumo zexesha lokuseta ze-light plastered desulfurized gypsum mortar.
Ixesha lokuqala lokuseta kunye nexesha lokugqibela lokuseta i-plastered gypsum mortar ekhaphukhaphu ekhaphukhaphu zombini ziyanda ngokwanda komxholo we-sodium citrate, kodwa ukwanda kwexesha lokuseta kuncinci. Xa umxholo we-sodium citrate uyi-0.3%, ixesha lokuqala lokuseta landa imizuzu engama-28, kwaye ixesha lokugqibela lokuseta landiswa ngemizuzu engama-33. Ukwandiswa kwexesha lokuseta kusenokubangelwa yindawo enkulu yomphezulu we-gypsum ekhaphukhaphu ekhaphukhaphu, enokufunxa i-retarder ejikeleze amasuntswana e-gypsum, ngaloo ndlela inciphisa izinga lokunyibilika kwe-gypsum kwaye ithintele ukukristaleka kwe-gypsum, okubangela ukuba i-gypsum slurry ingakwazi ukwenza inkqubo eqinileyo yokwakha. Yandisa ixesha lokuseta le-gypsum.
2.4 Impembelelo yomxholo we-cellulose ether kwiimpawu zoomatshini ze-gypsum ekhaphukhaphu efakwe i-plastered desulfurized
Idosi iyonke ye-gypsum powder, i-limestone powder kunye ne-lightweight aggregate yi-100%, kwaye idosi ye-fixed gypsum powder, i-limestone powder, i-lightweight aggregate kunye ne-retarder ayitshintshi. Xa idosi ye-hydroxypropyl methylcellulose iyi-0, 0.1%, 0.2% kunye ne-0.4%, amandla e-flexural kunye ne-compressive avela kwi-light plastered desulfurized gypsum mortar.
Kwiminyaka eyi-1, amandla e-flexural e-light plastered desulfurized gypsum mortar aqala anda aze anciphe ngokonyuka komxholo we-hydroxypropyl methylcellulose; kwiminyaka eyi-28, amandla e-flexural e-light plastered desulfurized gypsum mortar Ngokunyuka komxholo we-hydroxypropyl methylcellulose, amandla e-flexural abonise umkhwa wokuncipha kokuqala, emva koko anda aze anciphe. Xa umxholo we-hydroxypropyl methylcellulose uyi-0.2%, amandla e-flexural afikelela kwizinga eliphezulu, aze adlule amandla ahambelanayo xa umxholo we-cellulose uyi-0. Nokuba uneminyaka eyi-1 okanye engama-28, amandla oxinzelelo e-light plastered desulfurized gypsum mortar ayancipha ngokonyuka komxholo we-hydroxypropyl methylcellulose, kwaye umkhwa wokuncipha ohambelanayo ubonakala ngakumbi kwiminyaka eyi-28. Oku kungenxa yokuba i-cellulose ether inefuthe lokugcina amanzi kunye nokuqina, kwaye imfuno yamanzi yokuvumelana okuqhelekileyo iya kwanda ngokwanda komxholo we-cellulose ether, okubangela ukwanda komlinganiselo wamanzi nesamente kwisakhiwo se-slurry, ngaloo ndlela kunciphisa amandla esampuli ye-gypsum.
3 Isiphelo
(1) Inqanaba lokufuma kwe-gypsum e-desulfurized liya kwanela xa ikhula. Ngokukhula komxholo womgubo we-gypsum e-desulfurized, amandla okugoba kunye nokucinezela kwe-gypsum e-plastering elula abonise ukunyuka ngokubanzi, kodwa ukwanda bekuncinci.
(2) Njengoko umxholo wee-microbeads ezi-vitrified unyuka, amandla okugoba kunye namandla okucinezela e-light-weight plastered desulfurized gypsum mortar ayancipha ngokufanelekileyo, kodwa impembelelo yomxholo wee-microbeads ezi-vitrified kumandla okugoba ingaphezulu kuneyowomandla okugoba.
(3) Njengoko umxholo we-sodium citrate usanda, ixesha lokuqala lokuseta kunye nexesha lokugqibela lokuseta lodaka lwe-gypsum olufakwe i-plastered desulfurized mortar luyanda, kodwa xa umxholo we-sodium citrate umncinci, isiphumo kwixesha lokuseta asibonakali.
(4) Njengoko umxholo we-hydroxypropyl methylcellulose unyuka, amandla okuxinwa kwe-plastered light plastered desulfurized mortar ayancipha, kodwa amandla e-flexural abonisa umkhwa wokunyuka kuqala aze anciphe kwi-1d, kwaye kwi-28d ibonise umkhwa wokuncipha kuqala, emva koko iyanda ize inciphe.
Ixesha lokuthumela: Feb-02-2023