Kasulumfurization gypsum ndi mpweya wowoneka bwino wopangidwa ndi mafuta a sulufule (malasha, petroleum), mafashoni okhazikika opangidwa (mapangidwe a hemanio4 · 0.h2o) za gypsum yachilengedwe. Chifukwa chake, pali zofufuza zambiri komanso kugwiritsa ntchito kwa gypsum pypsum m'malo mwa gypsum yachilengedwe kuti ipange zinthu zodzipangira nokha. Orthec polymer Advials monga madzi kuchepetsa madzi, madzi osungitsa madzi ndi obwezeretsa ndi zofunikira zogwirira ntchito zomwe zimapangidwa muzomwe amadzipangira okha. Kuyanjana ndi njira za awiriwo omwe ali ndi zinthu zina ndi nkhani zoyenera kuzisamalira. Chifukwa cha mawonekedwe a mapangidwe, kukongola kwa gypsum kochepa ndi kochepa (kukula kwa tinthu kumaperekedwa makamaka pakati pa 40 ndi 60 μm), ndipo matope azomwe amapangira gypsum ndi osauka, ndipo matope Kukonzekera kokonzedwa ndi nthawi zambiri kumakhala kosavuta tsankho, stratization ndi magazi zimachitika. Cellulose ether ndiye njira yogwiritsidwa ntchito kwambiri mu matope, ndipo kugwiritsa ntchito madzi kuchepetsa mankhwala ndi chitsimikizo chofunikira kuti mudziwe momwe zidalili zodzipangira zamankhwala monga kapangidwe ka makina omanga komanso okhazikika.
Mu pepala ili, kuvota kwamtunduwu kumagwiritsidwa ntchito ngati index yowongolera (kufalitsa digiri 145 mm 5 mm), kuyang'ana kwambiri kwa ma enterose etherfurtive tokha - Zowonjezera zida, kutaya kwamadzi pakapita nthawi, ndipo kuphatikiza lamulo la chitsogozo cha zinthu zoyambira monga nthawi komanso zoyambirira zamakina; Nthawi yomweyo, yesani lamulo la maselo a cellulose pazakulidwe ndi kutentha kwa gypsum gypsumized gypsum pypsum pypsulamu yophatikizira .
1. Zida zopangira ndi njira zoyeserera
1.1 zopangira
Gypsum ufa: gypsum ufa wa gypsum wopangidwa ndi kampani ku Tangshan, kapangidwe kake ka heyihydrate ndi gypsum, ndi mawonekedwe ake akuwoneka mu tebulo 1.
chithunzi
chithunzi
Admintixtores ndi monga: cellulose ether (hydroxypropyl methylcellulose, hpmc kuti muchepetse); Superplastic Wwi; defoamer b-1; Eva Retuspectivesex ufa s-05, onse omwe ali pa malonda.
Aggregate: mchenga wamtsinje wamtsinje, mchenga wopangidwa mokha womwe umangokhala ndi siveme ya 0,6.
1.2 Njira Yoyesera
Kukhazikika kwa desulfurization gypsum: Mchenga: 1: 0.5: 0.45, kuchuluka kwa ma adlectives ena, amasinthana ndi gypsium gysurm + ) 0, 0.5 ‰, 1.0 ‰, 2.0 ‰, 3.0 ‰ ethel ether ether (hpmc-20,000); Konzanso kuchuluka kwa cellulose ether mpaka 1 ‰, Sankhani HPMC-20,000, HPMC-100,000, ndi H2,000, ndi H7.5, ndi H10 motsatana ) Mankhwala osokoneza bongo a sypsuurfor. Njira yoyeserera imachitika molingana ndi zofunikira za GB / T 17669.3-1999 "kutsimikiza kwa makina opanga gypsum".
Kutentha kwa mayeso a hydrate kumachitika pogwiritsa ntchito gypsum gypsum ndi zitsanzo zokhala ndi cellulose ether.
2. Zotsatira ndi kusanthula
2.1 zotsatira za cellulose ether pazinthu zoyambira matope
Ndi kuchuluka kwa zomwe zili, kugwirira ntchito kwa matope kumasinthidwa kwambiri, kuwonongeka kwa madzi nthawi yayitali, ndipo matope owuma sikunatheke, ndipo pansi. Kusuma ndi zikhulupiriro zakhala zothandiza kwambiri. Nthawi yomweyo, kumwa madzi kuti akwaniritse madzi omwewo kunakula kwambiri. Pa 5 ‰, kugwiritsa ntchito madzi kuwonjezeka ndi 102%, ndipo nthawi yotsiriza inali yayitali ndi 100 min, yomwe inali 2.5 nthawi yomwe ya chitsanzo chopanda kanthu. Makina oyambilira a matope adatsika kwambiri ndi kuchuluka kwa zomwe zili ndi cellulose ether ether ether. Zomwe zili mu cellulose ether zinali 5 ‰, hy h flexum mphamvu ndi mphamvu zopsinjika zimachepa mpaka 18.75% ndi 11.29% ya zitsanzo zopanda pake motsatana. Mphamvu yoponderezana ndi 39.47% ndi 23.45% ya zitsanzo zopanda pake motsatana. Ndizofunikira kudziwa kuti ndi kuchuluka kwa mankhwala osungira madzi, kachulukidwe kakang'ono ka matope mpaka kuwonongeka kwambiri, kuchokera ku 2069 kg / m3 pa 047 pa 5 - m3%. Kuchulukitsa kwa matope kumachepa ndipo chidwi chimakwera, chomwe ndi chimodzi mwazifukwa zochepetsera zowoneka bwino mu matope a matope.
Cellulose ether ndi polymer yopanda ionic. Magulu a hydroxyl pa cellulose ndi ma atomu a oxygen pamtengo wa ether amatha kuphatikiza mamolekyulu a hydrojeni, kutembenuza madzi osalowa m'madzi omangika, potero ndikupanga gawo m'madzi osungidwa. Macroscopically imawonekera ngati kuwonjezeka kwa kuphatikiza [5]. Kuchuluka kwa ma visccy sikungokulitsa madzi osungunula, komanso ma cellulose osungunuka adzayesedwa pamtunda wa zigawo za gypsum, kulepheretsa njira yothandizirana ndi nthawi yofikira; Panthawi yosangalatsa, magulu ambiri a mpweya adzayambitsidwa. Ma voids adzapanga ngati matope amalimba, pamapeto pake amachepetsa mphamvu yamatope. Kulingalira mokwanira matope osakanikirana, zomangamanga, ndikukhazikitsa nthawi ndi makina, ndipo kukhazikika kwa ethelfiur yodzidalira kwa gypsum sikuyenera kupitirira 1 ‰.
2.2 Mphamvu yazolemera kwa cellulose ether pa matope a matope
Nthawi zambiri, mawonekedwe owoneka bwino komanso owonjezera bwino a cellulose ether, malo abwino osungitsa madzi ndikuwonjezera mphamvu yophunzitsayo. Kugwirira ntchito kumakhudzidwa. Chifukwa chake, chisonkhezero cha cellulose elemeni olemera pazinthu zoyambira zomwe zimapangitsa kuti ziphaso zamagetsi zidayesedwe. Kufunika kwa madzi kwa matope kunachulukirachulukira pamlingo wina, koma osadziwikiratu nthawi yokhazikitsa nthawi ndi madzi. Nthawi yomweyo, mphamvu zosinthika ndi zosinthana za matope m'mayiko osiyanasiyana zinaonekera pansi, koma kuchepa sikunakhale zopingasa kwa ma cellulose ether. Mwachidule, kuwonjezeka kwa maselo olemera a cellulose ether ali ndi zotsatira zodziwikiratu pamagetsi osakaniza. Poganizira za luso lomanga, mafakisoni otsika komanso maselo ang'ono-celluur-celluur ayenera kusankhidwa ngati zida zama gypsum zodzilimbitsa.
2.3 zotsatira za cellulose ether pa kutentha kwa hydration ya gypsum gypsum
Ndi kuwonjezeka kwa zomwe zili mu cellulose, chithumwa champhamvu cha hydration cha gypsuursed sypsum pang'onopang'ono chinachepa, ndipo nthawi ya peak idachedwa pang'ono, pomwe sizodziwikiratu. Izi zikuwonetsa kuti ethel ether imatha kuchedwetsa hydraction kuchuluka kwa gydractive ya gypsuur yokhazikika pamlingo wina, kotero mlingo suyenera kukhala waukulu, ndikuyenera kuyang'aniridwa mkati mwa 1 ‰. Itha kuwoneka kuti kanema wa Colloidal adapangidwa pambuyo pa celluurose ethel ethel exarbed tinthu tating'onoting'ono, zomwe zimachepetsa kuchuluka kwa gypsum isanachitike kawiri h. Nthawi yomweyo, kusungitsa kwake kwamadzi ndi kukula kwamphamvu kuchedwetsa madzi osalala ndipo kusungunuka kumakhala kopindulitsa kwa gyswaum yokhazikika mu gawo la pambuyo pake. Kuwerenga, pomwe Mlingo woyenera umayang'aniridwa, cellulose ether ali ndi mphamvu zochepa pamlingo wa hydrate ndi kuchuluka kwa gysudum yokha. Nthawi yomweyo, kuchuluka kwa kuchuluka kwa cellulose komanso kulemera kwa maselo kumawonjezera mafayilo a slurry ndikuwonetsa magwiridwe antchito abwino. Kuti muwonetsetse madzi a gypsuuring gypsuurting, kumwa madzi kudzachuluka kwambiri, komwe kumachitika kwa nthawi yayitali. Chifukwa chachikulu chokhalira kuchepa kwa makina.
3. Kumaliza
. Poyerekeza ndi zomwe zimachitika, kutukwana kwa cellulose ether ether yikani pang'ono pazomwe zidali pamwambapa. Poganizira mokwanira, ma cellulose ether ayenera kusankhidwa ndi kulemera kakang'ono kwa maselo (ma visccCon Cource otsika kuposa 20 000), ndipo Mlingo uyenera kulamulidwa mkati mwa 1 ‰ mwa CE cememer.
. Kuchulukitsa kwamadzi kugwiritsidwa ntchito kwamadzi komanso kuchepa kwa kuchuluka kwa kuchuluka kwake ndi zifukwa zazikulu zochepetsera makina a matope a gypsum.
Post Nthawi: Meyi-08-2023