Desulfurization gypsum iindasitiri ne-chigadzirwa gypsum inowanikwa nekubvisa sulfurizing uye kuchenesa gasi reflue rinogadzirwa mushure mekupiswa kwemafuta ane sulfur kuburikidza neraimu yakanaka kana limestone poda slurry. Chimiro chayo chemakemikari chakafanana neyechisikigo dihydrate gypsum, kunyanya CaSO4 · 2H2O. Parizvino, nzira yekugadzira magetsi yenyika yangu ichiri kutungamirwa nekugadzirwa kwemagetsi emarasha, uye iyo SO2 inoburitswa nemarasha mukugadzirwa kwemagetsi ekupisa inodarika makumi mashanu muzana ehupfumi hwenyika yangu pagore. Huwandu hukuru hwekuburitsa sulfur dioxide hwakakonzera kusvibiswa kwemhoteredzo kwakakomba. Kushandiswa kweflue gasi desulfurization tekinoroji kugadzira desulfurized gypsum chiyero chakakosha kugadzirisa kuvandudzwa kwetekinoroji yemaindasitiri ane hukama nemarasha. Zvinoenderana nehuwandu husina kukwana, kuburitswa kweyakanyorova desulfurized gypsum munyika yangu yakapfuura 90 miriyoni t/a, uye nzira yekugadzira desulfurized gypsum inonyanya kuunganidzwa, iyo isingatore nyika chete, asiwo inokonzeresa kuraswa kukuru kwezviwanikwa.
Gypsum ine mabasa ehuremu hwechiedza, kuderedza ruzha, kudzivirira moto, kupisa kupisa, nezvimwewo. Inogona kushandiswa mukugadzira simende, kuvaka gypsum kugadzirwa, kushongedzwa engineering uye mamwe minda. Parizvino, nyanzvi dzakawanda dzakaita tsvakurudzo pakupura plasteri. Tsvagiridzo inoratidza kuti plaster plastering zvinhu zvine micro-kuwedzera, yakanaka kushanda uye plastiki, uye inogona kutsiva yechinyakare plastering zvinhu zvekushongedza mukati memadziro emukati. Zvidzidzo naXu Jianjun nevamwe zvakaratidza kuti desulfurized gypsum inogona kushandiswa kugadzira zviremera zvemadziro. Zvidzidzo naYe Beihong nevamwe zvakaratidza kuti gypsum yekupurasita inogadzirwa nedesulfurized gypsum inogona kushandiswa kupurasita yemukati wemukati wemadziro ekunze, yemukati yekuparadzanisa madziro uye sirin'i, uye inogona kugadzirisa zvakajairika matambudziko emhando sekunge kubhomba uye kuputika. zvechinyakare plastering dhaka. Lightweight plastering gypsum imhando itsva yezvakatipoteredza inopurasita zvinhu. Yakagadzirwa nehemihydrate gypsum seyakanyanya simende zvinhu nekuwedzera lightweight aggregates uye admixtures. Zvichienzaniswa neyakajairwa simende plastering zvinhu, hazvisi nyore kutsemuka, kunamatira Kusungirira kwakanaka, shrinkage yakanaka, girini uye kuchengetedza kwezvakatipoteredza. Iko kushandiswa kwedesulfurized gypsum kugadzira hemihydrate gypsum haingogadzirise chete dambudziko rekushaikwa kwechisikigo chivakwa gypsum zviwanikwa, asi zvakare inoona mashandisiro ekushandisa desulfurized gypsum uye inozadzisa chinangwa chekuchengetedza nharaunda. Naizvozvo, zvichibva pakudzidza kwe desulfurized gypsum, bepa rino rinoedza nguva yekumisikidza, kuchinjika simba uye Compressive simba, kudzidza zvinhu zvinokanganisa kuita kwechiedza-uremu plastering desulfurization gypsum mortar, uye kupa hwaro hwekufungidzira hwekuvandudzwa kwechiedza- uremu plastering desulfurization gypsum mortar.
1 kuedza
1.1 Raw zvinhu
Desulfurization gypsum powder: Hemihydrate gypsum yakagadzirwa uye calcined ne flue gas desulfurization tekinoroji, maitiro ayo ekutanga anoratidzwa muTebhurari 1. Chiremera chisinganzwisisiki: vitrified microbeads inoshandiswa, uye maitiro ayo ekutanga anoratidzwa muTebhu 2. Vitrified microbeads inosanganiswa muzvikamu zve4. %, 8%, 12%, uye 16% zvichienderana nehuwandu hwehuwandu hwechiedza yakadzurwa desulfurized gypsum mortar.
Retarder: Shandisa sodium citrate, kemikari kuongorora pure reagent, sodium citrate yakavakirwa pahuremu reshiyo yechiedza plastering desulfurization gypsum mortar, uye musanganiswa reshiyo i0, 0.1%, 0.2%, 0.3%.
Cellulose ether: shandisa hydroxypropyl methylcellulose (HPMC), viscosity iri 400, HPMC inobva pachiyero chehuremu hwechiedza chakaiswa desulfurized gypsum mortar, uye kusanganiswa kwechiyero 0, 0.1%, 0.2%, 0.4%.
1.2 Nzira yekuedza
Kushandiswa kwemvura uye nguva yekumisikidza yeiyo yakajairwa kuenderana kwedesulfurized gypsum inoreva GB/T17669.4-1999 "Kutemwa Kwezvinhu Zvenyama zveKuvaka Gypsum Plaster", uye nguva yekumisikidza yechiedza chakapuranga desulfurized gypsum mortar inoreva GB/T 28627- 2012 "Plastering Gypsum" inoitwa.
Iko kuchinjika uye kudzvinyirira masimba e desulfurized gypsum anoitwa zvinoenderana neGB/T9776-2008 "Building Gypsum", uye zvienzaniso zvine saizi ye40mm×40mm×160mm zvinoumbwa, uye iyo 2h simba uye yakaoma simba zvinoyerwa zvakateerana. Iko kushanduka uye kusimba kwesimba rechiedza-uremu plastered desulfurized gypsum mortar inoitwa zvinoenderana neGB/T 28627-2012 "Plastering Gypsum", uye simba rekurapa kwechisikigo kwe1d uye 28d inoyerwa zvakateerana.
2 Migumisiro uye nhaurirano
2.1 Mhedzisiro yegypsum poda yemukati pane mechaniki zvivakwa zve lightweight plastering desulfurization gypsum
Huwandu hwehupfu hwegypsum hupfu, limestone hupfu uye lightweight aggregate ndeye 100%, uye huwandu hweyakagadziriswa light aggregate uye admixture inoramba isingachinji. Kana iyo yakawanda yegypsum powder iri 60%, 70%, 80%, uye 90%, iyo desulfurization Migumisiro ye flexural uye compressive simba yegypsum mortar.
Simba rekushanduka-shanduka uye simba rekumanikidzika rechiedza chakaiswa desulfurized gypsum mortar zvose zvinowedzera nezera, zvichiratidza kuti hydration degree yegypsum inova yakakwana nezera. Nekuwedzera kwedesulfurized gypsum powder, simba rekushanduka uye simba rekumanikidzika rechiedza chekuisa gypsum chakaratidza kukwira kumusoro, asi kuwedzera kwaive kuduku, uye simba rekumanikidza pamazuva e28 rainyanya kuoneka. Pazera re1d, simba rekushanduka kwegypsum powder yakasanganiswa ne90% yakawedzera ne10.3% kana ichienzaniswa ne60% gypsum powder, uye simba rinopindirana rinowedzera ne10.1%. Pazera remazuva makumi maviri nemasere, simba rekushanduka kwegypsum powder yakasanganiswa ne90% yakawedzera ne8.8% kana ichienzaniswa neyegypsum powder yakasanganiswa ne60%, uye simba rinopindirana rinowedzera ne2.6%. Kupfupisa, zvinogona kugumiswa kuti chiyero che gypsum powder chine simba rakawanda pane flexural simba pane simba rekumanikidza.
2.2 Mhedzisiro yeakareruka aggregate yemukati pane mechaniki zvivakwa zvelightweight plastered desulfurized gypsum
Iyo yakazara gypsum poda, limestone poda uye lightweight aggregate ndeye 100%, uye huwandu hwakagadziriswa gypsum poda uye admixture inoramba isingachinji. Kana huwandu hwe vitrified microbeads iri 4%, 8%, 12%, uye 16%, iyo mwenje plaster Mhedzisiro yeflexural uye compressive simba yedesulfurized gypsum mortar.
Panguva imwecheteyo, simba rekushanduka uye simba rekumanikidza rechiedza rakaiswa desulfurized gypsum mortar rakadzikira nekuwedzera kwezviri mukati me vitrified microbeads. Izvi zvinodaro nekuti mazhinji eiyo vitrified microbeads ane mhango chimiro mukati uye iwo ega simba rakaderera, izvo zvinodzikisira kuchinjika uye kumanikidza simba relightweight plastering gypsum mortar. Pazera re1d, simba rekushanduka-shanduka re16% gypsum powder rakaderedzwa ne35.3% kana ichienzaniswa ne4% gypsum powder, uye simba rinopindirana rakaderedzwa ne16.3%. Pazera remazuva makumi maviri nemasere, simba rekunyunguduka re16% gypsum powder rakaderedzwa ne24.6% kana ichienzaniswa ne4% gypsum powder, asi simba rinopindirana rakaderedzwa chete ne6.0%. Kupfupisa, zvinogona kugumiswa kuti mhedzisiro yezviri mukati ma vitrified microbeads pane iyo flexural simba yakakura kupfuura iyo pane yekumanikidza simba.
2.3 Mhedzisiro yezvinodzoreredza zvemukati pakugadzika nguva yemwenje yakadzurwa desulfurized gypsum
Iyo yakazara dosage ye gypsum powder, limestone poda uye lightweight aggregate ndeye 100%, uye chiyero cheiyo yakatarwa gypsum powder, limestone powder, lightweight aggregate uye cellulose ether inoramba isingachinji. Kana iyo dosage ye sodium citrate iri 0, 0.1%, 0.2%, 0.3%, kuseta nguva mhedzisiro yechiedza chakaiswa desulfurized gypsum mortar.
Nguva yekutanga yekuisa uye yekupedzisira nguva yekugadzika kwechiedza chakaiswa desulfurized gypsum mortar zvose zvinowedzera nekuwedzera kwe sodium citrate content, asi kuwedzera kwekugadzirisa nguva kuduku. Kana iyo sodium citrate yemukati iri 0.3%, nguva yekutanga yekumisikidza inowedzera 28min, uye nguva yekupedzisira yekumisikidza yakawedzerwa ne33min. Kurebeswa kwenguva yekugadzika kunogona kunge kwakakonzerwa nenzvimbo yakakura yedesulfurized gypsum, iyo inogona kutora retarder yakatenderedza gypsum particles, nokudaro kuderedza kuparara kwegypsum uye kuvharidzira crystallization yegypsum, zvichiita kuti kusakwanisa kwegypsum slurry. kuumba hurongwa hwakasimba hwekugadzirisa. Wedzera nguva yekuisa gypsum.
2.4 Mhedzisiro ye cellulose ether yemukati pane mechaniki zvivakwa zve lightweight plastered desulfurized gypsum.
Iyo yakazara dosage ye gypsum poda, limestone poda uye lightweight aggregate ndeye 100%, uye dosage yeyakagadziriswa gypsum poda, limestone poda, lightweight aggregate uye retarder inoramba isingachinji. Kana iyo dosage yehydroxypropyl methylcellulose iri 0, 0.1%, 0.2% uye 0.4%, iyo inoshanduka uye inomanikidza simba mhedzisiro yechiedza chakaiswa desulfurized gypsum mortar.
Pazera re1d, simba rekushanduka-shanduka rechiedza chakaiswa desulfurized gypsum mortar yakatanga kuwedzera uye yakaderera nekuwedzera kwe hydroxypropyl methylcellulose content; pazera re 28d, simba rekushanduka-shanduka rechiedza chakaiswa desulfurized gypsum mortar Nekuwedzera kwezvinyorwa zve hydroxypropyl methylcellulose, simba rekushanduka-shanduka rakaratidza maitiro ekutanga kuderera, zvichizowedzera uye zvino kuderera. Apo zvinyorwa zve hydroxypropyl methylcellulose iri 0.2%, simba rekushandura rinosvika pakakwirira, uye rinopfuura simba rinoenderana apo zvinyorwa zve cellulose zviri 0. Pasinei nemakore e1d kana 28d, simba rekumanikidzika rechiedza chakaiswa desulfurized gypsum mortar inoderera ne kuwedzera kweiyo hydroxypropyl methylcellulose yemukati, uye inoenderana inodzikira maitiro iri pachena pa 28d. Izvi zvinodaro nekuti cellulose ether ine mhedzisiro yekuchengetedza mvura uye kukora, uye kudiwa kwemvura kwekuenderana kwakajairwa kuchawedzera nekuwedzera kwe cellulose ether yemukati, zvichikonzera kuwedzera kweiyo mvura-simende ratio ye slurry chimiro, nekudaro kuderedza simba. mufananidzo wegypsum.
3 Mhedziso
(1) Iyo hydration degree ye desulfurized gypsum inova yakakwana nezera. Nekuwedzera kwe desulfurized gypsum powder content, iyo inoshanduka uye inomanikidzika simba rechiedza chisina kusimba plastering gypsum yakaratidza kukwira kumusoro, asi kuwedzera kwaive kuduku.
(2) Nekuwedzera kwezviri mukati me vitrified microbeads, simba rekuchinjika uye kusimba kwesimba rechiedza-uremu rakaiswa desulfurized gypsum dhaka rinoderera zvinoenderana, asi mhedzisiro yezviri mukati ma vitrified microbeads pasimba reflexural yakakura kupfuura iyo yekumanikidza simba. simba.
(3) Nekuwedzera kweiyo sodium citrate yemukati, iyo yekutanga yekugadzika nguva uye yekupedzisira yekugadzika nguva yechiedza chakaiswa desulfurized gypsum mortar inorebeswa, asi kana zviri mukati sodium citrate zvishoma, mhedzisiro yekuisa nguva haisi pachena.
(4) Nekuwedzera kwe hydroxypropyl methylcellulose content, simba rekumanikidzika rechiedza rakaiswa desulfurized gypsum mortar rinoderera, asi simba rekushandura rinoratidza maitiro ekutanga kuwedzera uye kuderera pa1d, uye pa28d Yakaratidza maitiro ekuderera kwekutanga, zvino kuwedzera uyezve kuderera.
Nguva yekutumira: Feb-02-2023