Ko te gypsum desulfurization he gypsum hua-a-ahumahi ka riro mai i te whakakorenga me te pure i te hau rewharewha i puta i muri i te whakangitanga o te wahie whanariki na roto i te kotakota pai, te paura paura ranei.He rite tonu te hanganga matū ki te gypsum dihydrate māori, ko te CaSO4·2H2O te nuinga.I tenei wa, ko te tikanga whakangao hiko o toku whenua kei te kaha tonu te hanga hiko waro, a ko te SO2 i tukuna e te waro i roto i te mahi whakangao hiko waiariki neke atu i te 50% o nga tukunga a-tau o taku whenua.Na te nui o te tukunga whanariki whanariki i pa te kino o te taiao.Ko te whakamahi i te hangarau hau rewharewha ki te whakaputa i te gypsum desulfurized he ine nui hei whakaoti i te whanaketanga hangarau o nga ahumahi e pa ana ki te waro.E ai ki nga tatauranga kaore i oti, ko te tukunga o te gypsum desulfurized maku i taku whenua kua neke ake i te 90 miriona t/a, a ko te tikanga tukatuka o te gypsum desulfurized te nuinga o te puranga, e kore e noho noa i te whenua, engari ka nui te ururua o nga rawa.
Ko te Gypsum nga mahi o te taumaha marama, te whakaheke haruru, te aukati i te ahi, te whakamarumaru waiariki, me era atu. Ka taea te whakamahi ki te hanga sima, te hanga gypsum hanga, te miihini whakapaipai me etahi atu mara.I tenei wa, he maha nga tohunga i whakahaere rangahau mo te raima raima.Ko nga rangahau e whakaatu ana ko nga mea raima raima he moroiti-whakawhanui, he pai te mahi me te kirihou, ka taea te whakakapi i nga taonga raima tuku iho mo te whakapaipai pakitara o roto.Ko nga rangahau a Xu Jianjun me etahi atu e whakaatu ana ka taea te whakamahi i te gypsum desulfurized ki te hanga rauemi pakitara mama.Ko nga rangahau a Ye Beihong me etahi atu kua whakaatu ko te raima raima i hangaia e te gypsum desulfurized ka taea te whakamahi mo te paparanga raima o te taha o roto o te pakitara o waho, te pakitara wehewehe o roto me te tuanui, a ka taea te whakaoti i nga raru o te kounga noa penei i te pupuhi me te pakaru o moata raima tuku iho.Ko te gypsum raima mama he momo hou o te papanga raima pai mo te taiao.He mea hanga mai i te hemihydrate gypsum hei taonga sima matua ma te taapiri i nga whakahiato mama me nga whakaurunga.Ka whakatauritea ki nga taonga raima ciment tuku iho, ehara i te mea ngawari ki te pakaru, ki te piri He pai te here, te pai o te whakaheke, te matomato me te tiaki taiao.Ko te whakamahi i te gypsum desulfurized ki te whakaputa i te hemihydrate gypsum kaore i te whakaoti i te raruraru o te kore o nga rauemi gypsum whare taiao, engari ka mohio ano hoki ki te whakamahinga rauemi o te gypsum desulfurized me te whakatutuki i te kaupapa o te tiaki i te taiao kaiao.Na reira, i runga i te ako o te gypsum desulfurized, ka whakamatauhia e tenei pepa te waa whakatuu, te kaha o te whakakao me te kaha Compressive, ki te ako i nga mea e pa ana ki te mahi o te raima raima desulfurization gypsum moata, me te whakarato i te kaupapa whakaaro mo te whanaketanga o te marama- taimaha raima desulfurization gypsum moata.
1 whakamātau
1.1 Rauemi mata
Te paura gypsum desulfurization: Hemihydrate gypsum i hangaia me te calcined e te hangarau desulfurization hau rewharewha, ka whakaatuhia ona ahuatanga taketake i te Ripanga 1. Ko te whakahiato mama: ka whakamahia nga microbeads vitrified, ka whakaatuhia ona ahuatanga taketake i te Ripanga 2. Kua konatunatuahia nga microbeads vitrified i roto i nga waahanga o te 4 %, 8%, 12%, me te 16% i runga i te tauwehenga papatipu o te moata gypsum desulfurized marama kua pania.
Retarder: Whakamahia konutai citrate, tātari matū tauhohe parakore, konutai citrate te i runga i te ōwehenga taimaha o te marama raima desulfurization gypsum kumete, me te ōwehenga ranu ko 0, 0.1%, 0.2%, 0.3%.
Cellulose ether: whakamahia te hydroxypropyl methylcellulose (HPMC), ko te pokey he 400, ko te HPMC kei runga i te taumaha o te taumaha o te raima moata gypsum desulfurized, me te tauwehenga whakaranu ko te 0, 0.1%, 0.2%, 0.4%.
1.2 Tikanga whakamatautau
Ko te kohi wai me te wa whakarite o te riterite paerewa o te gypsum desulfurized e tohu ana ki te GB / T17669.4-1999 "Te Whakataunga o nga Tikanga Tianao o te Hanga Hangaira Gypsum", me te wa tautuhi mo te raima raima moata gypsum desulfurized e pa ana ki te GB / T 28627- 2012 "Plastering Gypsum" ka mahia.
Ko nga kaha whakaheke me te kaha o te gypsum desulfurized e mahia ana i runga i te GB / T9776-2008 "Gypsum Hanga", me nga tauira me te rahi o te 40mm × 40mm × 160mm kua whakarewahia, me te 2h kaha me te kaha maroke ka inehia.Ko te kaha flexible me te compressive o te moata gypsum desulfurized marama-taimaha kua pania i runga i te GB/T 28627-2012 "Plastering Gypsum", me te kaha o te rongoa taiao mo te 1d me te 28d kua inehia.
2 Nga hua me te matapaki
2.1 Te awenga o te paura gypsum paura i runga i nga ahuatanga miihini o te raima ngawari te raima desulfurization gypsum
Ko te tapeke o te paura gypsum, te paura kowhatu me te whakahiato mama he 100%, a ko te nui o te whakahiato marama me te whakaurunga ka noho tonu.A, no te nui o te paura gypsum ko 60%, 70%, 80%, me te 90%, te desulfurization Ko nga hua o te pupuhi me te kaha o te kaha o te gypsum mortar.
Ko te kaha flexible me te kaha compressive o te moata gypsum desulfurized marama i pania e rua ka piki ake i runga i te pakeketanga, e tohu ana ka nui ake te hydration o te gypsum ki te pakeke.Na te pikinga o te paura gypsum desulfurized, ko te kaha flexible me te kaha compressive o te raima raima mama i whakaatu te ahua whakarunga, engari he iti te pikinga, a ka tino kitea te kaha compressive i nga ra 28.I te 1d tau, ko te kaha o te kaha o te paura gypsum i konatunatua ki te 90% i piki ake i te 10.3% ka whakaritea ki te 60% o te paura gypsum, a ko te kaha o te kaha o te gypsum i piki ake i te 10.1%.I te 28 o nga ra, ka piki ake te kaha o te paura gypsum i konatunatua ki te 90% ma te 8.8% ka whakatauritea ki te paura gypsum i konatunatua ki te 60%, a ko te kaha o te kopiri kua piki ake e 2.6%.Hei whakarapopototanga, ka taea te whakatau ko te nui o te paura gypsum he nui ake te paanga ki te kaha o te whakaheke i te kaha o te kopiri.
2.2 Te awenga o te ihirangi whakahiato mama ki runga i nga ahuatanga miihini o te gypsum kua pania mama
Ko te tapeke o te paura gypsum, te paura kowhatu me te whakahiato mama he 100%, me te nui o te paura gypsum me te whakaurunga ka noho tonu.Ina he 4%, 8%, 12%, me te 16% te nui o nga microbeads vitrified, ko te raima marama Nga hua o te kaha flexible me te compressive o te moata gypsum desulfurized.
I taua tau ano, ka heke te kaha flexible me te kaha compressive o te moata gypsum desulfurized pania marama i te pikinga o te ihirangi o nga microbeads vitrified.Ko tenei na te mea ko te nuinga o nga microbeads kua whakakorikori he anga kowhao i roto, he iti to ratou ake kaha, e whakaiti ana i te kaha flexible me te kaha compressive o te mota gypsum raima mama.I te 1d tau, ka whakahekehia te kaha o te 16% o te paura gypsum i te 35.3% ka whakaritea ki te 4% o te paura gypsum, a ko te kaha o te kaha o te gypsum i whakahekehia e te 16.3%.I te 28 o nga ra, ka heke te kaha o te 16% o te paura gypsum i te 24.6% ka whakaritea ki te 4% o te paura gypsum, i te mea ko te kaha o te kaha o te gypsum i whakahekehia e te 6.0%.Hei whakarapopototanga, ka taea te whakatau ko te paanga o te ihirangi o nga microbeads vitrified i runga i te kaha flexural he nui ake i tera i runga i te kaha compressive.
2.3 Te awenga o te ihirangi whakaahuru ki te whakatakoto i te waa o te gypsum kua pania marama
Ko te katoa o te inenga o te paura gypsum, te paura kowhatu me te whakahiato mama he 100%, ka noho tonu te inenga o te paura gypsum paura, te paura kowhatu, te whakahiato mama me te cellulose ether kaore e rereke.I te wa e 0, 0.1%, 0.2%, 0.3% te inenga o te konutai citrate, ka whakatauhia nga hua o te raima moata gypsum desulfurized.
Ko te wa whakatuu tuatahi me te wa whakamutunga o te moata gypsum kua pania i te marama kua pania ki te weranga, ka piki ake i te pikinga o te konutai citrate, engari he iti te pikinga o te wa whakatuu.I te wa e 0.3% te ihirangi konutai citrate, ka roa te 28min te wa tautuhi tuatahi, a ko te wa tautuhinga whakamutunga ka roa e 33min.Ko te roanga o te wa whakarite ka tika pea na te nui o te mata o te gypsum desulfurized, ka taea te tango i te retarder huri noa i nga matūriki gypsum, na reira ka whakaiti i te tere o te whakakorenga o te gypsum me te aukati i te whakamaaramatanga o te gypsum, ka puta te kore o te slurry gypsum. ki te hanga i tetahi punaha hanganga u.Whakaroahia te wa tautuhi o te gypsum.
2.4 Te awenga o te ihirangi cellulose ether ki runga i nga ahuatanga miihini o te gypsum whakangawari kua pania mama
Ko te katoa o te inenga o te paura gypsum, te paura kowhatu kowhatu me te whakahiato mama he 100%, ka noho tonu te inenga o te paura gypsum pumau, te paura kowhatu, te whakahiato mama me te retarder kare e rereke.Ina ko te inenga o te hydroxypropyl methylcellulose he 0, 0.1%, 0.2% me te 0.4%, ka puta mai te kaha o te flexible me te kaha compressive o te raima moata gypsum desulfurized.
I te 1d tau, i te tuatahi ka piki te kaha flexible o te moata gypsum desulfurized i pania, ka heke i te pikinga o te ihirangi hydroxypropyl methylcellulose;i te 28d te pakeke, te kaha flexible o te maramara pania desulfurized gypsum morta Na te pikinga o te ihirangi o te hydroxypropyl methylcellulose, i whakaatu te kaha flexion i te ahua o te heke tuatahi, ka piki ka heke.Ina ko te ihirangi o te hydroxypropyl methylcellulose he 0.2%, ka eke te kaha flexible ki te morahi, ka nui ake i te kaha e rite ana ina he 0 te ihirangi o te cellulose. Ahakoa te pakeke o te 1d, 28d ranei, ka heke te kaha o te pupuhi o te moata gypsum desulfurized marama. te pikinga o te ihirangi hydroxypropyl methylcellulose, me te ahua o te heke o te ahua ka kitea i te 28d.Ko tenei na te mea ko te cellulose ether te paanga o te pupuri i te wai me te matotoru, a ka piki ake te hiahia o te wai mo te riterite paerewa ki te piki ake o te ihirangi cellulose ether, ka hua ake te pikinga o te wai-ciment ōwehenga o te hanganga slurry, na reira ka whakaiti i te kaha. o te tauira gypsum.
3 Whakamutunga
(1) Ko te tohu whakamakuku o te gypsum desulfurized ka nui ake i te tau.Na te pikinga o te paura gypsum desulfurized, ko te kaha flexible me te pakari o te raima raima mama i whakaatu te ahua whakarunga, engari he iti te pikinga.
(2) Na te pikinga o nga ihirangi o nga microbeads vitrified, ka heke te kaha o te kaha me te kaha o te whakakoi o te moata gypsum desulfurized marama-taimaha, engari ko te paanga o te ihirangi o nga microbeads vitrified i runga i te kaha whakaheke he nui atu i te kaha o te kaha o te kaha. kaha.
(3) Na te pikinga o te ihirangi konutai citrate, ka roa te wa whakatuu tuatahi me te wa whakatuu whakamutunga o te raima moata gypsum desulfurized kua pania, engari ka iti te ihirangi o te konutai citrate, kaore i te kitea te paanga ki te wa whakarite.
(4) Na te pikinga o te ihirangi hydroxypropyl methylcellulose, ka heke te kaha o te kopiri o te moata gypsum desulfurized marama kua pania, engari ko te kaha o te whakakao e whakaatu ana i te ahua o te piki tuatahi ka heke i te 1d, i te 28d I whakaatu te ahua o te heke tuatahi, katahi. ka piki ake ka heke.
Wā tuku: Feb-02-2023