ʻO ka gypsum desulfurization kahi gypsum huahana i loaʻa ma o ka desulfurizing a me ka hoʻomaʻemaʻe ʻana i ke kinoea flue i hana ʻia ma hope o ka puhi ʻana i ka wahie i loko o ka sulfur ma o ka lime maikaʻi a i ʻole ka limestone pauka slurry. Ua like kona haku mele 'ana me ka gypsum dihydrate maoli, 'o CaSO4·2H2O. I kēia manawa, ʻoi aku ka mana o ka hana mana o koʻu ʻāina e ka hana mana lanahu, a ʻo ka SO2 i hoʻokuʻu ʻia e ka lanahu i ke kaʻina hana o ka mana wela, ʻoi aku ka nui o ka 50% o nā hoʻokuʻu makahiki o koʻu ʻāina. ʻO ka nui o ka sulfur dioxide hoʻoheheʻe ʻia i hoʻohaumia nui i ke kaiapuni. ʻO ka hoʻohana ʻana i ka ʻenehana desulfurization flue gas e hana i ka gypsum desulfurized he mea koʻikoʻi ia e hoʻoponopono ai i ka hoʻomohala ʻenehana o nā ʻoihana pili i ke ahi. Wahi a nā helu helu ʻole, ʻo ka hoʻokuʻu ʻana o ka gypsum desulfurized ma koʻu ʻāina ua ʻoi aku ma mua o 90 miliona t / a, a ʻo ke ʻano hana o ka desulfurized gypsum ka mea i hoʻopaʻa ʻia, ʻaʻole ia e noho wale i ka ʻāina, akā ke kumu hoʻi i ka nui o nā kumu waiwai.
ʻO Gypsum nā hana o ke kaumaha māmā, ka hoʻohaʻahaʻa leo, ka pale ʻana i ke ahi, ka insulation thermal, a me nā mea ʻē aʻe. I kēia manawa, nui ka poʻe naʻauao i hana i nā noiʻi e pili ana i ka plastering plaster. Hōʻike ka noiʻi ʻana he micro-expansion ka mea plaster plastering, hiki ke hana maikaʻi a me ka plasticity, a hiki ke hoʻololi i nā mea hoʻonaninani kuʻuna no ka hoʻonani pā hale. Ua hōʻike ʻia nā haʻawina a Xu Jianjun a me nā mea ʻē aʻe e hiki ke hoʻohana ʻia ka gypsum desulfurized e hana i nā mea pā māmā. Ua hōʻike ʻia nā haʻawina a Ye Beihong a me nā mea ʻē aʻe e hiki ke hoʻohana ʻia ka gypsum plastering i hana ʻia e ka gypsum desulfurized no ka papa plastering o ka ʻaoʻao o loko o ka pā o waho, ka pā ʻāpana o loko a me ke kaupaku, a hiki ke hoʻoponopono i nā pilikia maʻamau e like me ka puʻu ʻana a me ka haki ʻana. kuʻuna hamo hamo. ʻO ka gypsum plastering māmā he ʻano hou o nā mea hoʻopili pili kaiapuni. Hana ʻia ia me ka hemihydrate gypsum ma ke ʻano he kumu cementitious mea ma o ka hoʻohui ʻana i nā aggregates māmā a me nā admixtures. Ke hoʻohālikelike ʻia me nā mea hoʻoheheʻe sima maʻamau, ʻaʻole maʻalahi ka haki ʻana, paʻa ʻO ka hoʻopaʻa maikaʻi ʻana, ka shrinkage maikaʻi, ka ʻōmaʻomaʻo a me ka palekana o ke kaiapuni. ʻO ka hoʻohana ʻana i ka gypsum desulfurized e hana i ka hemihydrate gypsum ʻaʻole wale e hoʻopau i ka pilikia o ka nele o nā kumu waiwai gypsum hale maoli, akā ʻike pū kekahi i ka hoʻohana ʻana i ka waiwai o ka gypsum desulfurized a hoʻokō i ke kumu o ka pale ʻana i ke kaiaola. No laila, ma muli o ke aʻo ʻana o ka gypsum desulfurized, hoʻāʻo kēia pepa i ka manawa hoʻonohonoho, ka ikaika flexural a me ka ikaika Compressive, e aʻo i nā kumu e pili ana i ka hana o ka māmā plastering desulfurization gypsum mortar, a hāʻawi i kahi kumu theoretical no ka hoʻomohala ʻana o ka māmā- paona paona desulfurization gypsum mortar.
1 hoao
1.1 Mea maka
Desulfurization gypsum pauka: Hemihydrate gypsum i hana ʻia a calcined e ka flue gas desulfurization ʻenehana, ua hōʻike ʻia kona mau waiwai kumu ma ka Papa 1. ʻO ka hui māmā: hoʻohana ʻia nā microbeads vitrified, a hōʻike ʻia kona mau waiwai kumu ma ka Papa 2. %, 8%, 12%, a me 16% e pili ana i ka lakio nui o ka malamalama i hamoia moka gypsum desulfurized.
Retarder: E hoʻohana i ka sodium citrate, hoʻomaʻamaʻa kemika maʻemaʻe reagent, sodium citrate ua hoʻokumu ʻia ma ka lakene kaumaha o ka māmā plastering desulfurization gypsum mortar, a ʻo ka hui pū ʻana he 0, 0.1%, 0.2%, 0.3%.
Cellulose etera: hoʻohana hydroxypropyl methylcellulose (HPMC), viscosity mea 400, HPMC ua hoʻokumu 'ia ma luna o ke kaumaha lākiō o ka malamalama plastered desulfurized gypsum mortar, a me ka hui 'ana i ka lakio he 0, 0.1%, 0.2%, 0.4%.
1.2 Hana ho'āʻo
ʻO ka hoʻohana ʻana i ka wai a me ka manawa hoʻonohonoho o ke kūpaʻa maʻamau o ka gypsum desulfurized e pili ana i ka GB / T17669.4-1999 "Ka Hoʻoholo ʻana i nā Pono Kino o ke kūkulu ʻana i ka Gypsum Plaster", a ʻo ka manawa hoʻonohonoho o ke kukui plastering desulfurized gypsum mortar e pili ana i GB / T 28627- Hana ʻia ʻo 2012 "Plastering Gypsum".
Hana ʻia nā ikaika flexural a me ka compressive o ka gypsum desulfurized e like me GB / T9776-2008 "Gypsum Building", a ua hoʻoheheʻe ʻia nā specimens me ka nui o 40mm × 40mm × 160mm, a ua ana ʻia ka ikaika 2h a me ka ikaika maloʻo. ʻO ka ikaika flexural a me ka compressive o ka māmā-kaumaha plastered desulfurized gypsum mortar ua lawe ʻia e like me GB / T 28627-2012 "Plastering Gypsum", a ua ana ʻia ka ikaika o ka hoʻōla kūlohelohe no 1d a me 28d.
2 Nā hualoaʻa a me ke kūkākūkā
2.1 Ka hopena o ka gypsum pauda maʻiʻo ma nā waiwai mechanical o ka māmā plastering desulfurization gypsum
ʻO ka nui o ka pauka gypsum, ka pauka limestone a me ka hōʻiliʻili māmā he 100%, a ʻo ka nui o ka hui kukui paʻa a me ka hoʻohui ʻana ʻaʻole i loli. Ke 60%, 70%, 80%, a me 90% ka nui o ka pauka gypsum, ka desulfurization ʻO nā hopena o ka ikaika flexural a me ka compressive o ka gypsum mortar.
Hoʻonui ka ikaika flexural a me ka ikaika compressive o ka mortar gypsum desulfurized māmā me ka makahiki, e hōʻike ana i ka lawa o ka hydration o ka gypsum me ka makahiki. Me ka piʻi ʻana o ka pauka gypsum desulfurized, ʻo ka ikaika flexural a me ka ikaika compressive o ka māmā plastering gypsum i hōʻike i kahi ʻano piʻi holoʻokoʻa, akā ua liʻiliʻi ka piʻi ʻana, a ʻike maoli ka ikaika compressive i nā lā 28. I ka makahiki 1d, ua hoʻonui ʻia ka ikaika flexural o ka pauka gypsum i hui pū ʻia me 90% e 10.3% i hoʻohālikelike ʻia me ka pauka gypsum 60%, a ua hoʻonui ʻia ka ikaika compressive e 10.1%. I ka makahiki 28, ua hoʻonui ʻia ka ikaika flexural o ka pauka gypsum i hui pū ʻia me 90% e 8.8% i hoʻohālikelike ʻia me ka pauka gypsum i hui pū ʻia me 60%, a ua hoʻonui ʻia ka ikaika compressive e 2.6%. I ka hōʻuluʻuluʻana, hiki ke hoʻoholo i ka nui o ka pauka gypsum iʻoi aku ka hopena i ka ikaika flexural ma mua o ka ikaika compressive.
2.2 Ka hopena o ka maʻiʻo huikau māmā ma luna o nā waiwai mekini o ka gypsum desulfurized māmā.
ʻO ka nui o ka pauka gypsum, ka pauka limestone a me ka hōʻuluʻulu māmā he 100%, a ʻo ka nui o ka pauka gypsum paʻa a me ka hoʻohui ʻana ʻaʻole i loli. I ka nui o vitrified microbeads he 4%, 8%, 12%, a me 16%, i ka malamalama plaster Results o ka flexural a me ka compressive ikaika o desulfurized gypsum mortar.
I ka makahiki like, ua emi iho ka ikaika flexural a me ka ikaika compressive o ke kukui plastered desulfurized gypsum mortar me ka hoʻonui o ka ʻike o nā microbeads vitrified. ʻO kēia no ka mea ʻo ka hapa nui o nā microbeads vitrified he ʻano hollow i loko a he haʻahaʻa ko lākou ikaika ponoʻī, e hōʻemi ana i ka ikaika flexural a me ka compressive o ka mortar gypsum plastering māmā. I ka makahiki 1d, ua hoʻemi ʻia ka ikaika flexural o 16% gypsum pauka e 35.3% i hoʻohālikelike ʻia me ka 4% gypsum pauka, a ua hoʻemi ʻia ka ikaika compressive e like me 16.3%. I ka makahiki o 28 mau lā, ua ho'ēmiʻia ka ikaika flexural o 16% gypsum pauka e 24.6% i hoʻohālikelikeʻia me ka 4% gypsum pauka, aʻo ka ikaika compressive e pili ana i ho'ēmi waleʻia e 6.0%. I ka hōʻuluʻulu ʻana, hiki ke hoʻoholo ʻia ʻoi aku ka nui o ka hopena o ka ʻike o nā microbeads vitrified i ka ikaika flexural ma mua o ka ikaika compressive.
2.3 Ka hopena o ka maʻiʻo hoʻopaneʻe ma ka hoʻonohonoho ʻana i ka manawa o ka gypsum desulfurized māmā
ʻO ka nui o ka nui o ka pauka gypsum, ka pauka limestone a me ka hōʻuluʻulu māmā he 100%, a ʻo ke ʻano o ka pauka gypsum paʻa, ka pauka limestone, ka aggregate māmā a me ka cellulose ether i mau ʻole. Inā he 0, 0.1%, 0.2%, 0.3% ka nui o ka sodium citrate, e hoʻonohonoho ana i nā hopena manawa o ka mortar gypsum desulfurized māmā.
ʻO ka manawa hoʻonohonoho mua a me ka manawa hoʻonohonoho hope o ka mortar gypsum desulfurized māmā i hoʻopaʻa ʻia me ka piʻi ʻana o ka ʻike sodium citrate, akā liʻiliʻi ka piʻi ʻana o ka manawa hoʻonohonoho. Ke 0.3% ka nui o ka sodium citrate, hoʻolōʻihi ka manawa hoʻonohonoho mua i 28min, a ua hoʻolōʻihi ʻia ka manawa hoʻonohonoho hope e 33min. ʻO ka hoʻolōʻihi ʻia o ka manawa hoʻonohonoho ma muli paha o ka nui o ka ʻili o ka gypsum desulfurized, hiki ke hoʻopaʻa i ka retarder a puni nā ʻāpana gypsum, a laila e hōʻemi ana i ka helu dissolution o ka gypsum a me ka pale ʻana i ka crystallization o ka gypsum, ka hopena i ka hiki ʻole o ka slurry gypsum. e hoʻokumu i kahi ʻōnaehana paʻa. E hoʻolōʻihi i ka manawa hoʻonohonoho o ka gypsum.
2.4 Ka hopena o ka maʻiʻo cellulose ether ma nā waiwai mechanical o ka gypsum desulfurized māmā.
ʻO ka nui o ka nui o ka pauka gypsum, ka pauka limestone a me ka hōʻuluʻulu māmā he 100%, a ʻaʻole i hoʻololi ʻia ke ʻano o ka pauka gypsum paʻa, ka pauka limestone, ka aggregate māmā a me ka retarder. Inā he 0, 0.1%, 0.2% a me 0.4% ka nui o ka hydroxypropyl methylcellulose, ʻo ka flexural a me ka ikaika compressive ka hopena o ka mortar gypsum desulfurized māmā.
I ka makahiki 1, ua hoʻonui mua ʻia ka ikaika flexural o ka mortar gypsum desulfurized māmā a hoʻemi ʻia me ka hoʻonui ʻana o ka hydroxypropyl methylcellulose content; i 28d makahiki, ka flexural ikaika o ka malamalama plastered desulfurized gypsum mortar Me ka hoʻonui o ka maʻiʻo o hydroxypropyl methylcellulose, ua hōʻike ka flexural ikaika i ke au o ka mua emi, a laila, mahuahua a laila emi. Ke 0.2% ka nui o ka hydroxypropyl methylcellulose, hiki i ka ikaika flexural ke kiʻekiʻe loa, a ʻoi aku i ka ikaika e pili ana i ka wā o ka cellulose he 0. No ka makahiki o 1d a i ʻole 28d, e emi ana ka ikaika compressive o ke kukui plastered desulfurized gypsum mortar. ka piʻi ʻana o ka maʻiʻo hydroxypropyl methylcellulose, a ʻike ʻia ke ʻano hoʻohaʻahaʻa e pili ana i 28 d. ʻO kēia ke kumu o ka cellulose ether i ka hopena o ka paʻa ʻana o ka wai a me ka mānoanoa, a e hoʻonui ʻia ka koi wai no ka maʻamau maʻamau me ka hoʻonui ʻana o ka cellulose ether content, ka hopena i ka hoʻonui ʻana i ka ratio wai-cement o ka slurry structure, a laila e hōʻemi ana i ka ikaika. o ka gypsum specimen.
3 Ka hopena
(1) Ua lawa ka hydration desulfurized gypsum me ka makahiki. Me ka piʻi ʻana o ka ʻiʻo o ka pauka gypsum desulfurized, ʻo ka flexural a me ka ikaika compressive o ka māmā plastering gypsum i hōʻike i kahi ʻano piʻi holoʻokoʻa, akā ua liʻiliʻi ka piʻi.
(2) Me ka hoʻonui ʻana o ka ʻike o nā microbeads vitrified, ʻoi aku ka ikaika o ka flexural a me ka ikaika compressive o ka māmā māmā plastered desulfurized gypsum m ikaika.
(3) Me ka hoʻonui ʻana o ka sodium citrate content, hoʻolōʻihi ʻia ka manawa hoʻonohonoho mua a me ka manawa hoʻonohonoho hope o ka mortar gypsum desulfurized māmā, akā inā liʻiliʻi ka ʻike o ka sodium citrate, ʻaʻole maopopo ka hopena i ka manawa hoʻonohonoho.
(4) Me ka hoʻonui o ka hydroxypropyl methylcellulose maʻiʻo, ka compressive ikaika o ka malamalama plastered desulfurized gypsum mortar emi iho, akā, ka flexural ikaika hōʻike i ke au o ka mua mahuahua a laila emi i 1d, a ma 28d Ua hōʻike i ke au o ka emi mua, a laila. mahuahua a emi iho.
Ka manawa hoʻouna: Feb-02-2023