Ingaruka za selile ya selile kumihindagurikire yibigize amazi nibicuruzwa biva muri sulphoaluminate sima paste

Ibigize amazi hamwe nubwihindurize bwa microstructure muri selulose ether yahinduwe na sulphoaluminate sima (CSA) yakozwe nubushakashatsi bwakozwe na nucleaire ya kirimbuzi ntoya hamwe nisesengura ryumuriro. Ibisubizo byerekanye ko nyuma yo kongeramo ether ya selile, yamenyesheje amazi hagati yimiterere ya flocculation, yaranzwe nkimpinga ya gatatu yo kwidagadura mugihe cyo kwidagadura cya transvers (T2), kandi ubwinshi bwamazi yamamajwe byari bifitanye isano neza na dosiye. Byongeye kandi, selulose ether yorohereje cyane guhanahana amazi hagati yimbere n’imbere hagati y’ibimera bya CSA. Nubwo kongeramo ether ya selulose nta ngaruka bigira ku bwoko bwibicuruzwa biva muri sima ya sulphoaluminate, bizagira ingaruka ku bicuruzwa biva mu mazi bifite imyaka runaka.

Amagambo y'ingenzi:selile ether; sima ya sima; amazi; ibicuruzwa biva mu mahanga

0、Ijambo ry'ibanze

Cellulose ether, itunganyirizwa muri selile karemano binyuze murukurikirane rwibikorwa, ni imiti ishobora kuvugururwa nicyatsi kibisi. Ether isanzwe ya selile nka methylcellulose (MC), Ethylcellulose (HEC), na hydroxyethylmethylcellulose (HEMC) ikoreshwa cyane mubuvuzi, ubwubatsi nizindi nganda. Dufashe HEMC nk'urugero, irashobora kunoza cyane gufata neza amazi no guhora kwa sima ya Portland, ariko bigatinda gushiraho sima. Kurwego rwa microscopique, HEMC nayo igira ingaruka zikomeye kuri microstructure hamwe na pore imiterere ya sima paste. Kurugero, hydrata progaramu ettringite (AFt) irashoboka cyane kuba imeze nkinkoni ngufi, kandi igipimo cyacyo kiri hasi; icyarimwe, umubare munini wibyobo byafunzwe byinjizwa muri sima ya sima, bigabanya umubare wogutumanaho.

Inyinshi mubushakashatsi buriho ku ngaruka za selile ya selile ku bikoresho bishingiye kuri sima byibanda kuri sima ya Portland. Isima ya Sulphoaluminate (CSA) ni sima ya karubone nkeya yigenga yigenga mu gihugu cyanjye mu kinyejana cya 20, hamwe na calcium anhydrous calcium sulphoaluminate nk'amabuye y'agaciro. Kuberako umubare munini wa AFt ushobora kubyara nyuma yo kuyobya amazi, CSA ifite ibyiza byimbaraga hakiri kare, kutabangikanya cyane, hamwe no kurwanya ruswa, kandi ikoreshwa cyane mubice byo gucapa 3D ya beto, kubaka ubwubatsi bwo mu nyanja, no gusana byihuse mubushyuhe buke. . Mu myaka yashize, Li Jian n'abandi. yasesenguye ingaruka za HEMC kuri minisiteri ya CSA duhereye ku mbaraga zo kwikuramo n'ubucucike butose; Wu Kai n'abandi. yize ku ngaruka za HEMC ku nzira yo gutangira hakiri kare ya sima ya CSA, ariko amazi yo muri sima ya CSA yahinduwe Itegeko ryihindagurika ryibigize nibice bitazwi. Hashingiwe kuri ibi, iki gikorwa cyibanze ku gukwirakwiza igihe cyo kwidagadura cya transvers (T2) muri CSA ya sima ya CSA mbere na nyuma yo kongeramo HEMC ukoresheje igikoresho gito cya kirimbuzi cya magnetiki resonance, kandi ugakomeza gusesengura kwimuka no guhindura amategeko y’amazi muri slurry. Guhindura ibice bya sima paste yarizwe.

1. Ubushakashatsi

1.1 Ibikoresho bibisi

Ibicuruzwa bibiri biboneka mu bucuruzi bya sulphoaluminate byakoreshejwe, bisobanurwa nka CSA1 na CSA2, hamwe nigihombo cyo gutwikwa (LOI) kiri munsi ya 0.5% (agace kinshi).

Hifashishijwe hydroxyethyl methylcellulose eshatu zitandukanye, zerekanwa nka MC1, MC2 na MC3. MC3 iboneka mukuvanga 5% (igice kinini) polyacrylamide (PAM) muri MC2.

1.2 Ikigereranyo cyo kuvanga

Ubwoko butatu bwa selile ya selulose yavanze muri sima ya sulphoaluminate, ibipimo byari 0.1%, 0.2% na 0.3% (igice kinini, kimwe hepfo). Ikigereranyo cy’amazi-sima gihamye ni 0,6, naho igipimo cyamazi-sima cyikigereranyo cyamazi-sima gifite imikorere myiza kandi ntamaraso ava mubizamini byo gukoresha amazi yubuziranenge.

1.3 Uburyo

Ibikoresho byo hasi-NMR ibikoresho byakoreshejwe mubigeragezo ni PQ⁃001 Isesengura rya NMR ryaturutse muri Shanghai Numei Analytical Instrument Co., Ltd. Imbaraga za rukuruzi zumuriro wa magneti uhoraho ni 0.49T, proton resonance yumurongo ni 21MHz, kandi ubushyuhe bwa magneti bugumaho kuri 32.0°C. Mugihe c'ikizamini, icupa rito ry'ikirahure ririmo icyitegererezo cya silindrike ryashyizwe muri coil ya probe igikoresho, hanyuma urutonde rwa CPMG rwakoreshejwe mugukusanya ibimenyetso byo kuruhura paste ya sima. Nyuma yo guhinduranya na software ikora isesengura, T2 inversion curve yabonetse ukoresheje algorithm ya Sirt inversion. Amazi afite ubwisanzure butandukanye mubwisanzure azarangwa nimpinga zinyuranye zo kwidagadura muburyo butandukanye bwo kwidagadura, kandi agace k'impinga yo kwidagadura kajyanye neza n’amazi menshi, hashingiwe ku bwoko n'ibirimo by'amazi muri ruhago. birashobora gusesengurwa. Kugirango habeho ingufu za magnetiki resonance, birakenewe ko tumenya neza ko umurongo wa O1 (unit: kHz) yumurongo wa radio uhuza numurongo wa magneti, kandi O1 igahinduka buri munsi mugihe cyizamini.

Ingero zasesenguwe na TG? DSC hamwe na STA 449C zahujwe nisesengura ryumuriro ukomoka muri NETZSCH, mu Budage. N2 yakoreshejwe nk'ikirere gikingira, ubushyuhe bwari 10°C / min, kandi ubushyuhe bwo gusikana bwari 30-800°C.

2. Ibisubizo n'ibiganiro

2.1 Ubwihindurize bwibigize amazi

2.1.1 Ether idafunguye ether

Impinga ebyiri zo kwidagadura (zisobanurwa nkimpinga ya mbere niyakabiri yo kwidagadura) irashobora kugaragara neza mugihe cyo kwidagadura cya transvers (T2) yerekanwe na sulphoaluminate ya sima ebyiri. Impinga ya mbere yo kwidagadura ikomoka imbere yimiterere ya flocculation, ifite ubwisanzure buke nigihe gito cyo kwidagadura; impinga ya kabiri yo kwidagadura ituruka hagati yimiterere ya flocculation, ifite urwego runini rwubwisanzure nigihe kinini cyo kwidagadura. Ibinyuranye, T2 ihuye nimpinga yambere yo kwidagadura ya sima ebyiri iragereranywa, mugihe impinga ya kabiri yo kwidagadura ya CSA1 igaragara nyuma. Bitandukanye na sulphoaluminate ciment clinker hamwe na sima yakozwe wenyine, impinga zombi zo kuruhuka za CSA1 na CSA2 zuzuzanya igice kuva leta yambere. Hamwe niterambere ryamazi, impinga yambere yo kwidagadura igenda ikunda kwigenga, agace kagabanuka gahoro gahoro, kandi karazimira burundu muminota 90. Ibi birerekana ko hari urwego runaka rwo guhanahana amazi hagati yimiterere ya flocculation nuburyo bwimiterere ya paste ebyiri za sima.

Guhindura agace ka mpinga yumwanya wa kabiri wo kwidagadura no guhindura agaciro ka T2 gahuye nimpinga yimpinga bikurikirana biranga ihinduka ryamazi yubusa hamwe n’amazi ahujwe n’umubiri ndetse n’ihinduka ry’urwego rw’ubwisanzure bw’amazi mu gihirahiro. . Gukomatanya byombi birashobora kwerekana byimazeyo uburyo bwo kuyobora amazi. Hamwe niterambere ryamazi, agace ka mpinga gahoro gahoro gahoro gahoro, kandi ihinduka ryagaciro rya T2 ibumoso ryiyongera buhoro buhoro, kandi hariho isano runaka ihuye hagati yabo.

2.1.2 Wongeyeho selile ether

Dufashe CSA2 ivanze na 0.3% MC2 nkurugero, T2 yo kuruhuka ya T2 ya sulphoaluminate sima nyuma yo kongeramo selile ya selile irashobora kuboneka. Nyuma yo kongeramo ether ya selile, impinga ya gatatu yo kwidagadura igereranya adsorption yamazi na selulose ether yagaragaye kumwanya aho igihe cyo kwidagadura cya transvers cyari hejuru ya 100m, kandi agace ka mpinga kiyongereye buhoro buhoro hamwe no kwiyongera kwa selile.

Ubwinshi bwamazi hagati yububiko bwa flocculation bugira ingaruka ku kwimuka kwamazi imbere yimiterere ya flocculation hamwe na adsorption yamazi ya selile. Kubwibyo, ubwinshi bwamazi hagati yububiko bwa flocculation bifitanye isano nimiterere yimbere yimbere ya slurry hamwe nubushobozi bwamazi ya selulose ether. Ubuso bwa kabiri bwo kwidagadura buratandukanye nibiri muri selile ya ether iratandukanye nubwoko butandukanye bwa sima. Ubuso bwa kabiri bwo kwidagadura bwa CSA1 bwaragabanutse bikomeza kwiyongera hamwe na selile ya ether ya selile, kandi yari ntoya kuri 0.3%. Ibinyuranye, igice cya kabiri cyo kwidagadura cya CSA2 cyihuta cyiyongera hamwe no kwiyongera kwa selile ya ether.

Andika ihinduka ryagace ka gatatu kuruhuka hamwe no kwiyongera kwibirimo bya selile. Kubera ko agace ka mpinga katewe nubwiza bwikitegererezo, biragoye kwemeza ko ubwiza bwikitegererezo bwongeweho ari bumwe mugihe cyo gupakira icyitegererezo. Kubwibyo, igipimo cyakarere gikoreshwa mukuranga ibimenyetso byikigereranyo cya gatatu cyo kuruhuka muburyo butandukanye. Uhereye ku guhinduka kwagace ka gatatu kuruhuka hamwe no kwiyongera kwibintu bya selulose ether, birashobora kugaragara ko hamwe niyongerekana ryibintu bya selile ya ether, agace ka gatatu kuruhuka kwerekanaga ahanini kwiyongera (muri CSA1, iyo ibikubiye muri MC1 byari 0.3%, byari byinshi Ubuso bwimpinga ya gatatu yo kwidagadura bugabanukaho gato kuri 0.2%), byerekana ko hamwe niyongera ryibintu bya selile ya selile, amazi yamamaza nayo yiyongera buhoro buhoro. Muri CSA1, MC1 yari ifite amazi meza kuruta MC2 na MC3; mugihe muri CSA2, MC2 yari ifite amazi meza.

Birashobora kugaragara uhereye kumihindagurikire yubuso bwa gatatu bwo kwidagadura kuri buri gice cya misa ya CSA2 hamwe nigihe kiri muri 0.3% ya selile ya ether ko ubuso bwikigereranyo cya gatatu cyo kwidagadura kuri buri gice kigabanuka bikomeje hamwe na hydration, byerekana ko Kubera ko igipimo cya hydrasiya ya CSA2 cyihuta kuruta icya clinker na sima yakozwe, selile ya ether ntagihe ifite cyo kongera amazi ya adsorption, kandi ikarekura amazi yamamajwe kubera ubwiyongere bwihuse bwibice byamazi yibibabi. Byongeye kandi, adsorption y'amazi ya MC2 irakomeye kuruta iya MC1 na MC3, ibyo bikaba bihuye n'imyanzuro yabanjirije iyi. Birashobora kugaragara uhereye kumihindagurikire yimisozi kuri buri gice cya misa ya gatatu yo kwidagadura ya CSA1 hamwe nigihe kuri dosiye zingana na 0.3% za selile ya etulire ko itegeko ryo guhindura impinga ya gatatu yo kwidagadura ya CSA1 itandukanye nki CSA2, kandi ubuso bwa CSA1 bwiyongera muri make mugihe cyambere cya hydration. Nyuma yo kwiyongera byihuse, byagabanutse kubura, bishobora guterwa nigihe kinini cyo kwambara cya CSA1. Byongeye kandi, CSA2 irimo gypsumu nyinshi, hydration iroroshye gukora AFt nyinshi (3CaO Al2O3 3CaSO4 32H2O), ikoresha amazi menshi yubusa, kandi igipimo cyo gukoresha amazi kirenze igipimo cy’amazi yinjira muri selile ya selile, bishobora kuganisha kuri The agace ka gatatu kuruhuka hejuru ya CSA2 slurry yakomeje kugabanuka.

Nyuma yo kwinjizamo selile ya selile, impinga ya mbere niyakabiri yo kwidagadura nayo yahindutse kurwego runaka. Birashobora kugaragara uhereye mubugari bwimpinga ya kabiri yo kwidagadura yubwoko bubiri bwa sima ya sima hamwe nigituba gishya nyuma yo kongeramo ether ya selulose ko ubugari bwimpinga ya kabiri yo kwidagadura bwa shitingi nshya butandukanye nyuma yo kongeramo ether ya selile. kwiyongera, imiterere yimpinga ikunda gukwirakwira. Ibi birerekana ko kwinjiza ether ya selile irinda igiteranyo cya sima ku rugero runaka, bigatuma imiterere ya flocculation isa naho irekuye, igabanya urugero rw’amazi, kandi ikongerera ubwisanzure bw’amazi hagati y’inzego z’ibimera. Ariko, hamwe no kwiyongera kwa dosiye, kwiyongera kwubugari bwimpinga ntibigaragara, kandi ubugari bwimpinga zimwe na zimwe buragabanuka. Birashoboka ko kwiyongera kwa dosiye byongera ubwiza bwicyiciro cyamazi ya slurry, kandi mugihe kimwe, adsorption ya selile ya ether kuri selile ya sima yongerewe imbaraga kugirango itere flocculation. Urwego rwubwisanzure bwubushuhe hagati yinzego ziragabanuka.

Umwanzuro urashobora gukoreshwa mugusobanura urwego rwo gutandukana hagati yimpera yambere niyakabiri. Urwego rwo gutandukana rushobora kubarwa ukurikije urwego rwo gukemura = (Igice cya Afirst-Asaddle) / Igice cya Afirst, aho igice cya Afirst na Asaddle kigereranya amplitude ntarengwa yimpera yambere yo kwidagadura hamwe na amplitude yikintu cyo hasi cyane hagati yimpinga zombi, bikurikiranye. Urwego rwo gutandukana rushobora gukoreshwa mu kuranga urwego rwo guhanahana amazi hagati yimiterere ya flocculation yuburyo butandukanye, kandi agaciro muri rusange ni 0-1. Agaciro kari hejuru yo Gutandukanya kerekana ko ibice byombi byamazi bigoye guhanahana, kandi agaciro kangana na 1 kerekana ko ibice byombi byamazi bidashobora guhana na gato.

Birashobora kugaragara uhereye kubisubizo byibisubizo byurwego rwo gutandukana ko urwego rwo gutandukanya sima zombi utongeyeho selile ya ether ihwanye, byombi ni 0.64, kandi impamyabumenyi yo gutandukana iragabanuka cyane nyuma yo kongeramo selile. Ku ruhande rumwe, imyanzuro iragabanuka cyane hamwe no kwiyongera kwa dosiye, ndetse no gukemura impinga zombi ndetse bigabanuka kugera kuri 0 muri CSA2 ivanze na 0.3% MC3, byerekana ko ether ya selile itera imbere cyane guhanahana amazi imbere no hagati ya Imiterere. Dushingiye ku kuba kwinjiza ether ya selile ntaho bihuriye cyane cyane kumwanya nu gace ka mpinga ya mbere yo kwidagadura, hashobora kuvugwa ko kugabanuka kwicyemezo biterwa ahanini no kwiyongera kwubugari bwimpinga ya kabiri yo kwidagadura, kandi imiterere ya flocculation irekuye ituma amazi ahinduka imbere n'inyuma byoroshye. Byongeye kandi, guhuzagurika kwa selulose ether muburyo bubi birusheho kunoza urwego rwo guhanahana amazi hagati yimbere ninyuma yimiterere ya flocculation. Kurundi ruhande, ingaruka zo kugabanya ibyemezo bya selile ya selile kuri CSA2 irakomeye kuruta iya CSA1, ishobora guterwa nubuso buto bwihariye bwubuso hamwe nubunini bunini bwa CSA2, bukaba bwumva cyane ingaruka zo gukwirakwiza selile ya selile nyuma kwishyiriraho.

2.2 Impinduka mubihimbano

Uhereye kuri TG-DTG yerekanwe ya CSA1 na CSA2 ya hydrata ya hydrata muminota 90, min min 150 numunsi 1, urashobora kubona ko ubwoko bwibicuruzwa biva mumazi bitahindutse mbere na nyuma yo kongeramo ether ya selile, na AFt, AFm na AH3 byose byari yashizweho. Ubuvanganzo bwerekana ko urwego rwo kubora rwa AFt ari 50-120°C; urwego rwo kubora rwa AFm ni 160-220°C; urwego rwo kubora rwa AH3 ni 220-300°C. Hamwe niterambere ryamazi, kugabanuka kwibiro byicyitegererezo byiyongereye buhoro buhoro, kandi impinga ziranga DTG za AFt, AFm na AH3 zagiye zigaragara buhoro buhoro, byerekana ko imiterere yibicuruzwa bitatu byamazi byiyongera buhoro buhoro.

Uhereye ku gice kinini cya buri gicuruzwa cyamazi muri sample mugihe cyimyaka itandukanye ya hydration, urashobora kubona ko AFt ibisekuruza bya sample yubusa kumyaka 1d irenze iy'icyitegererezo kivanze na selile ya selile, byerekana ko ether ya selile ifite uruhare runini kuri hydration ya slurry nyuma ya coagulation. Hariho ingaruka zimwe zo gutinda. Ku minota 90, umusaruro wa AFm wintangarugero eshatu wakomeje kuba umwe; ku minota 90-150, umusaruro wa AFm muri sample yubusa watinze cyane ugereranije nandi matsinda abiri yintangarugero; nyuma yumunsi 1, ibikubiye muri AFm murugero rwubusa byari bimeze nkibya sample bivanze na MC1, naho AFm yibigize MC2 yari hasi cyane mubindi byitegererezo. Kubijyanye nigicuruzwa cya hydrasiya AH3, igipimo cyibisekuru bya CSA1 icyitegererezo cyambaye ubusa nyuma yo kuvomera muminota 90 cyatinze cyane ugereranije na selile ya selile, ariko igipimo cyibisekuru cyihuta cyane nyuma yiminota 90, hamwe na AH3 umusaruro wibitegererezo bitatu. byari bihwanye n'umunsi 1.

Nyuma yuko amashanyarazi ya CSA2 ashyizwe kuri 90min na 150min, ingano ya AFT yakozwe muri sample ivanze na selile ya selile yari nkeya cyane ugereranije nicyitegererezo cyambaye ubusa, byerekana ko ether ya selulose nayo yagize ingaruka mbi kuri CSA2. Mu byitegererezo ku myaka 1d, byagaragaye ko ibikubiye muri AFt by'icyitegererezo cyambaye ubusa byari bikiri hejuru y'icyitegererezo kivanze na selile ya selile, byerekana ko ether ya selulose yari igifite ingaruka zimwe na zimwe zo kudindiza kuri hydration ya CSA2 nyuma yo gushiraho bwa nyuma, kandi urwego rwo kudindira kuri MC2 rwarutaga urw'icyitegererezo cyongeweho na selile ya ether. MC1. Ku minota 90, ingano ya AH3 yakozwe nicyitegererezo cyambaye ubusa yari nkeya ugereranije nicyitegererezo kivanze na selile ya ether; ku minota 150, AH3 yakozwe na sample yubusa yarenze iyicyitegererezo kivanze na selile ya ether; kumunsi 1, AH3 yakozwe na sample eshatu zari zihwanye.

3. Umwanzuro

(1) Ether ya selile irashobora guteza imbere cyane guhanahana amazi hagati yimiterere ya flokculasiya. Nyuma yo kwinjizamo ether ya selile, ether ya selulose itanga amazi mumazi, irangwa nkimpinga ya gatatu yo kwidagadura mugihe cyo kwidagadura (T2). Hamwe no kwiyongera kwibintu bya selile ya selile, kwinjiza amazi ya selile ya selile byiyongera, kandi ubuso bwa mpinga ya gatatu yo kwidagadura bwiyongera. Amazi yakiriwe na selulose ether arekurwa buhoro buhoro mumiterere ya flocculation hamwe na hydration ya slurry.

. hamwe no kwiyongera kwibirimo, amazi yicyiciro cya viscosity ya slurry ariyongera, kandi ether ya selile igira ingaruka zikomeye kubice bya sima. Ingaruka nziza ya adsorption igabanya urugero rwubwisanzure bwamazi hagati yimiterere yimiterere.

. ariko selulose ether yatinzeho gato gushiraho ibicuruzwa biva mumazi.