Desulfurization Gypsum yog kev lag luam los ntawm-khoom gypsum tau los ntawm dulue roj uas muaj los ntawm sulphur-muaj roj los ntawm nplua cov kua qaub los yog limestone hmoov slurry. Nws cov tshuaj lom neeg muaj pes tsawg leeg yog tib yam li ntawm ntuj dihydrate gypsum, feem ntau yog Caso4H2o. Tam sim no, kuv lub teb chaws lub zog tiam yog tseem muaj los ntawm cov hluav taws xob ua hluav taws xob ua kom muaj zog ntxiv rau ntau dua 50% ntawm kuv lub teb chaws txoj kev pa tawm txhua xyoo. Qhov ntau ntawm cov sulfur dioxide emission tau ua rau ib puag ncig huab cua. Kev siv Flue roj desulfurization technology los tsim cov khoom siv desulfurized gypsum yog qhov tseem ceeb tshaj plaws los daws cov kev lag luam siv hluav taws xob ntsig txog kev lag luam. Raws li cov txheeb cais tsis tiav, kev tawm suab ntub dej desulfurized gypsum hauv kuv lub tebchaws tau ntau dua 90 lab, tab sis kuj ua rau muaj cov khoom pov tseg loj.
Gypsum muaj cov haujlwm ntawm lub teeb, cov suab nrov txo, kev tiv thaiv hluav taws, tsim kho cua sov, kho kom zoo nkauj engineering thiab lwm thaj teb. Tam sim no, muaj ntau tus kws tshawb fawb tau tshawb nrhiav ntawm plastering plaster. Cov kev tshawb fawb qhia tau tias plaster plastering cov khoom siv micro-expansion, ua haujlwm zoo thiab tuaj yeem hloov cov ntaub ntawv kho kom zoo nkauj rau sab hauv tsev phab ntsa. Kev tshawb fawb los ntawm Xu Jianjun thiab lwm tus tau qhia tias kev siv Gypsum tau siv tau los ua cov ntaub ntawv phab ntsa. Kev tshawb fawb los ntawm nej beihong thiab lwm tus tau qhia tias cov plastering txheej los ntawm cov teeb meem sab hauv ntawm phab ntsa sab hauv, thiab muaj peev xwm sib faib phab ntsa sab hauv thiab tawg ntawm cov tshuaj txhuam thiab tawg ntawm cov tshuaj txhuam cov tshuaj cug. Hnav cov plastering gypsum yog hom tshiab ntawm cov khoom siv plaster zoo nkauj ua phooj ywg. Nws yog ua los ntawm hemihydrate gypsum raws li cov khoom siv hlwb loj los ntawm kev ntxiv kev sib cav sib ceg thiab kev sib sau ua ke. Piv nrog cov tsoosiumaster cov ntaub ntawv, nws tsis yooj yim mus tawg, lo shrinkage zoo, kev tiv thaiv ntsuab thiab ib puag ncig. Kev siv ntawm Desulfurized Gypsum los tsim HemiYDRate Gypsum tsis tsuas yog daws cov peev txheej ntuj, tab sis kuj ua tiav lub hom phiaj tiv thaiv kab ecological. Yog li ntawd, raws li kev kawm ntawm Desulfurized Gypsum, cov ntawv tshuaj sib xyaw ua ke rau kev txhim kho ntawm lub teeb lub teeb pom kev zoo nkauj desulfurization
1 sim
1.1 Cov Khoom Siv Raw
Desulfurization Gypsum Hmoov: Hemihydrate gypsum tsim tawm thiab cov teeb meem tseem ceeb yog muab xyaw ua ke ntawm cov lus 1. Gypsum tshuaj khib.
Retarder: Siv cov sodium citrate, tshuaj lom neeg citrate yog raws li qhov hnyav collectiony desulfurization, thiab cov sib piv sib xyaw yog 0, 0.1%, 0.3%.
Cellulose EThere: Siv HydroxyPropyylulose (HPMC), HPMC yog li ntawm lub teeb cug, thiab cov sib piv sib xyaw yog 0, 0.1%, 0.4%.
1.2 Txoj Kev Ntsuas
Kev siv dej thiab lub sijhawm teeb tsa cov qauv kev ua kom zoo rau GBSUM
Lub flexural thiab compressive muaj zog ntawm desulfurized gypsum yog nqa tawm raws li Gypsum ", thiab lub zog ntawm lub zog thiab lub zog 2 ntsuas ntsuas. Lub flexural thiab compressive lub zog ntawm lub teeb-phaus plastered detulfurized gypsum ", thiab lub zog ntawm ntuj kho rau 1d thiab 28d yog ntsuas raws li.
2 cov qhab nia thiab kev sib tham
2.1 Cov nyhuv ntawm gypsum hmoov cov ntsiab lus ntawm cov khoom siv tshuab ntawm kev hnav khaub ncaws desulfurization gypsum
Tag nrho cov nyiaj ntawm gypsum hmoov, limestone hmoov thiab hnav kev sib sau ua ke yog 100%, thiab cov nyiaj ntawm cov chaw ruaj khov thiab admixture pheej hloov pauv. Thaum tus nqi ntawm gypsum hmoov yog 60%, 70%, 80%, thiab 90%, cov desulfurization cov txiaj ntsig ntawm gypsum tshuaj.
Lub zog yooj yim thiab compressive zog ntawm lub teeb ci plastered gypsum cug ob qho tib si nce qib ntawm Gypsum tau txaus nrog lub hnub nyoog. Nrog kev nce ntawm desulfurized gypsum hmoov, lub zog ntawm lub teeb ci plaster tau pom tias muaj zog ntau, thiab lub zog compressive ntawm 28 hnub tau pom tseeb tshwj xeeb. Thaum lub hnub nyoog 1 hnub, lub zog Flexuralt ntawm Gypsum hmoov sib xyaw nrog 90% nce los ntawm 10.3% piv nrog rau ntawm 60.3% piv rau lub zog compressive nce los ntawm 10.1%. Thaum muaj hnub nyoog 28 hnub, lub zog flexural ntawm gypsum hmoov sib xyaw nrog 90% piv nrog rau ntawm Gypsum hmoov sib xyaw nrog 60%, thiab cov qauv compressive compressive nce los ntawm 2.6%. Txhawm rau suav, nws tuaj yeem xaus lus tias tus nqi ntawm gypsum hmoov muaj ntau tshaj rau lub zog yooj yim dua li lub zog compressive.
2.2 Cov nyhuv ntawm lub teeb yuag sib xyaw ntawm cov khoom siv me me ntawm lub teeb yuag plastered detulfurized gypsum
Tag nrho cov nyiaj ntawm gypsum hmoov, limestone hmoov thiab hnav khaub ncaws sib sau ua 100%, thiab cov nyiaj ntawm tsau cov hmoov thiab admixture tseem tsis hloov pauv. Thaum tus nqi ntawm Vitrified microbead yog 4%, 8%, thiab 16%, teeb lub teeb ci ntsa iab ntawm desulfurized gypsum tshuaj.
Nyob rau tib lub hnub nyoog, lub zog yooj yim thiab compressive zog ntawm lub teeb ci plastered gypsum tshuaj ntsuab txo qis nrog cov ntsiab lus ntawm vitrified microbeads. Qhov no yog vim tias feem ntau ntawm cov qauv vitrified microbeads muaj tus qauv hollow hauv thiab lub zog ntawm lub teeb yuag gypsum tshuaj. Thaum lub hnub nyoog 1 hnub, lub zog flexural, cov hmoov loj yog txo los ntawm 45.3% piv nrog ntawm 4% thiab cov qauv compressive compressive tau txo los ntawm 16.3%. Thaum muaj hnub nyoog 28 hnub, lub zog flexural ntawm 16% gypsum hmoov tau raug txo los ntawm 4.6% piv nrog ntawm 4% ntawm 4%, lub zog compressive compressive tsuas yog txo los ntawm 6.0%. Txhawm rau kom suav tau, nws tuaj yeem xaus lus tias cov ntsiab lus ntawm cov ntsiab lus ntawm vitrified microbeads yog ntau dua qhov ntawd ntawm lub compressive lub zog.
2.3 cov nyhuv ntawm Retarder cov ntsiab lus ntawm kev teeb lub sij hawm ntawm lub teeb plastered detulfurized gypsum
Tag nrho cov koob hmoov ntawm gypsum hmoov, limestone hmoov thiab hnav khaub ncaws ntawm tsau thiab cellulose ether tseem tsis hloov. Thaum cov nqi ntawm cov kua qaub sodium yog 0, 0.1%, 0.3%, 0.3%, kev teeb tsa lub sijhawm ua kom muaj cov roj cug
Lub sijhawm teem sijhawm thiab lub sijhawm zaum kawg ntawm lub teeb plastered gypsum cortrate cov ntsiab lus, tab sis nce sijhawm teeb tsa lub sijhawm me me. Thaum cov ncauj lus hauv qab cov ntsiab lus yog 0.3%, qhov pib teev lub sijhawm ntev 28min, thiab lub sijhawm teem sijhawm kawg tau ntev los ntawm 33min. Lub caij nyoog ntawm lub sijhawm teem sijhawm yuav yog vim muaj qhov chaw nyob ntawm gypsum, yog li txo cov kev sib cais ntawm gypsum thiab incomplection ntawm gypsum slurry los ua ib qho chaw ruaj khov. Ua kom lub sijhawm ua haujlwm ntawm Gypsum.
2.4 Cov nyhuv ntawm cellulose ntsiab lus ntawm cov khoom siv me me ntawm lub teeb cov plastered detulfurized desulfurized gypsum
Tag nrho cov koob hmoov ntawm gypsum hmoov, limestone hmoov thiab hnav khaub ncaws ntawm tsau cov hmoov, lub teeb ci ntsa iab ua ke thiab rov qab tsis hloov. Thaum cov tshuaj ntawm hydroxypropylencellulose yog 0, 0.1% thiab 0.4% thiab 0.4% thiab 0.4% thiab 0.4% thiab 0.2% thiab 0.2% thiab 0.2% thiab 0.2%
Nyob rau ntawm lub hnub nyoog 1 hnub, lub zog flexural ntawm lub teeb ci plastered gypsum cug thawj nce ua ntej nce thiab tom qab ntawd txo qis ntawm hydroxypropylulose ntsiab lus; Thaum muaj hnub nyoog 28d, lub zog flexural ntawm lub teeb ci plastered gypsum cug me me uas tau ua rau muaj kev txo qis ntawm thawj qhov tsawg dua, ces nce thiab tom qab ntawd poob. Thaum cov ntsiab lus ntawm hydroxypropyl methylulose yog 0.2%, lub zog ntawm hydrotums ntawm lub hnub nyoog 1. " Qhov no vim tias Cellulose ether muaj cov nyhuv ntawm cov txiaj ntsig etherening, yog li txo lub zog ntawm Gypsum portimen.
3 Xaus
(1) Cov dej degree ntawm desulfurized gypsum yuav txaus nrog lub hnub nyoog. Nrog kev nce ntawm desulfurized gypsum hmoov cov ntsiab lus, flexural thiab compressive lub zog ntawm lub teeb ci plastering gypsum tau muaj tag nrho upward sib, tab sis qhov nce me me.
(2) Nrog kev nce cov ntsiab lus ntawm vitrified microbeads, tab sis cov txiaj ntsig ntawm cov ntsiab lus ntawm lub zog ntawm lub zog yog ntau dua li ntawm compressive zog zog.
(3) Nrog rau qhov nce ntawm cov ncauj lus socrate, lub sijhawm pib lub sij hawm ntawm lub teeb citrium yog me me, muaj kev cuam tshuam rau kev teeb tsa lub sijhawm tsis pom tseeb.
(4) Nrog rau kev nce ntawm hydroxypropyl metyluculose lub zog txo qis, tab sis ntawm 28d nws pom tias muaj tsawg zuj zus, ces nce thiab tom qab ntawd tsawg dua.
Lub sijhawm Post: Feb-02-2023