Gypsum Desulfurization bụ gypsum nke ụlọ ọrụ mmepụta ihe na-enweta site na iwepụ na ime ka gas flue dị ọcha nke a na-emepụta mgbe ọkụ nke mmanụ nwere sọlfọ gbawara site na obere lime ma ọ bụ limestone powder slurry. Ihe mejupụtara kemịkalụ ya bụ otu ihe ahụ nke gypsum dihydrate eke, ọkachasị CaSO4·2H2O. Ugbu a, usoro mmepụta ike nke obodo m ka na-achịkwa site na mmepụta ike coal, SO2 nke coal na-ewepụta n'usoro mmepụta ike okpomọkụ na-akpata ihe karịrị 50% nke mwepụta kwa afọ nke obodo m. Nnukwu mwepụta sulfur dioxide emeela ka mmetọ gburugburu ebe obibi dị njọ. Ojiji nke teknụzụ desulfurization gas flue iji mepụta gypsum desulfurized bụ ihe dị mkpa iji dozie mmepe teknụzụ nke ụlọ ọrụ ndị metụtara coal. Dịka ọnụ ọgụgụ na-ezughị ezu si kwuo, mwepụta nke gypsum desulfurized mmiri mmiri na mba m karịrị nde 90 t/a, usoro nhazi nke gypsum desulfurized bụ nke a na-agbakọtakarị, nke na-abụghị naanị na ọ na-ewe ala, kamakwa ọ na-akpata nnukwu mfu nke akụrụngwa.
Gypsum nwere ọrụ dị ka ibu dị mfe, mbelata mkpọtụ, mgbochi ọkụ, mkpuchi okpomọkụ, wdg. Enwere ike iji ya na mmepụta simenti, mmepụta gypsum owuwu, injinia ịchọ mma na ngalaba ndị ọzọ. Ugbu a, ọtụtụ ndị ọkà mmụta emeela nchọpụta na plasta plasta. Nnyocha ahụ na-egosi na ihe plasta plasta nwere obere mgbasawanye, ezigbo ọrụ na plasticity, ma nwee ike dochie ihe plasta ọdịnala maka ịchọ mma mgbidi n'ime ụlọ. Ọmụmụ nke Xu Jianjun na ndị ọzọ egosila na enwere ike iji gypsum desulfurized mee ihe mgbidi dị mfe. Ọmụmụ nke Ye Beihong na ndị ọzọ egosila na enwere ike iji gypsum plasta nke gypsum desulfurized mepụtara mee akwa plasta nke akụkụ dị n'ime mgbidi mpụta, mgbidi na ụlọ nkewa dị n'ime, ma nwee ike idozi nsogbu ndị a na-ahụkarị dị ka ịgba égbè na mgbawa nke plasta plasta ọdịnala. Gypsum plasta dị mfe bụ ụdị ihe plasta ọhụrụ na-adịghị emerụ gburugburu ebe obibi. Ejiri hemihydrate gypsum mee ya dị ka ihe simenti bụ isi site na ịgbakwunye ihe dị mfe na ngwakọta. Ma e jiri ya tụnyere ihe plasta simenti ọdịnala, ọ dịghị mfe ịgbawa, rapara na njikọ dị mma, mbelata dị mma, nchekwa akwụkwọ ndụ akwụkwọ ndụ na gburugburu ebe obibi. Ojiji nke gypsum desulfurized iji mepụta gypsum hemihydrate abụghị naanị na ọ na-edozi nsogbu nke enweghị akụrụngwa gypsum ebumpụta ụwa, kamakwa ọ na-emezu ojiji akụrụngwa nke gypsum desulfurized ma na-emezu ebumnuche nke ichebe gburugburu ebe obibi. Ya mere, dabere na ọmụmụ nke gypsum desulfurized, akwụkwọ a na-anwale oge ntọala, ike flexural na ike nrụgide, iji mụọ ihe ndị na-emetụta arụmọrụ nke gypsum desulfurization plastering dị mfe, ma nye ntọala echiche maka mmepe nke gypsum desulfurization plastering dị mfe ibu.
Nnwale 1
1.1 Ihe ndị e ji emepụta ihe
Ntụ ntụ gypsum nke na-ewepụ ihe mkpofu: Gypsum Hemihydrate nke e ji teknụzụ nke na-ewepụ ihe mkpofu gas flue mepụta ma na-eme ka ọ dị ọcha, ihe ndị bụ isi ya dị na Tebụl 1. A na-eji obere ihe mkpofu: a na-eji obere ihe mkpofu vitrified eme ihe, a na-egosikwa ihe ndị bụ isi ya na Tebụl 2. A na-agwakọta obere ihe mkpofu vitrified na nha nke 4%, 8%, 12%, na 16% dabere na nha nke gypsum nke a na-etinye n'ime ihe mkpofu gypsum nke a na-etinye n'ime ihe mkpofu.
Nkwụsị: Jiri sodium citrate, nyocha kemịkalụ dị ọcha, sodium citrate dabere na oke ibu nke plastering desulfurization gypsum mortar, na oke ngwakọta bụ 0, 0.1%, 0.2%, 0.3%.
Cellulose ether: jiri hydroxypropyl methylcellulose (HPMC), viscosity bụ 400, HPMC dabere na oke ibu nke ngwa agha gypsum desulfurized nke e ji ụrọ kpụọ, oke ngwakọta ahụ bụ 0, 0.1%, 0.2%, 0.4%.
1.2 Usoro nnwale
Mmiri na oge e ji mee ka gypsum desulfurized sie ike na-ezo aka na GB/T17669.4-1999 "Nchọpụta Ihe Ndị Dị na Ahụ nke Iwuli Gypsum Plaster", na oge e ji mee ka gypsum desulfurized plaster dị mfe na-ezo aka na GB/T 28627-2012 "Plastering Gypsum".
A na-eme ike flexural na compressive nke gypsum desulfurized dịka GB/T9776-2008 "Building Gypsum" si dị, a na-akpụkwa ihe nlele ndị dị nha 40mm × 40mm × 160mm, a na-atụkwa ike awa 2 na ike akọrọ n'otu n'otu. A na-eme ike flexural na compressive nke gypsum desulfurized plastered dị mfe dịka GB/T 28627-2012 "Plastering Gypsum" si dị, a na-atụkwa ike nke ọgwụgwọ eke maka 1d na 28d n'otu n'otu.
2 Nsonaazụ na mkparịta ụka
2.1 Mmetụta nke ọdịnaya ntụ ntụ gypsum na ihe ndị dị n'ime ya nke plastering desulfurization gypsum dị mfe
Ngụkọta ntụ gypsum, ntụ limestone na ngwakọta dị fechaa bụ 100%, ọnụọgụ nke ngwakọta dị fechaa na ngwakọta anaghị agbanwe agbanwe. Mgbe ọnụọgụ ntụ gypsum dị 60%, 70%, 80%, na 90%, mwepụta nke gypsum mortar na-apụta na ike flexural na compressive.
Ike mgbagọ na ike mgbagọ nke gypsum mortrị e ji mmiri mee ka ọ dị nro na-abawanye ka afọ na-aga, na-egosi na ọkwa mmiri nke gypsum na-eto nke ọma ka ọ na-eto. Ka ntụ ntụ gypsum e ji mmiri mee ka ọ dị nro na-abawanye, ike mgbagọ na ike mgbagọ nke gypsum plastering dị mfe gosiri mmụba n'ozuzu ya, mana mmụba ahụ dị obere, ike mgbagọ na ụbọchị 28 pụtara ìhè nke ukwuu. Mgbe afọ 1 gasịrị, ike mgbagọ nke ntụ ntụ gypsum agwakọtara na 90% mụbara site na 10.3% ma e jiri ya tụnyere nke ntụ ntụ gypsum 60%, ike mgbagọ kwekọrọ mụbara site na 10.1%. Mgbe afọ 28 gasịrị, ike mgbagọ nke ntụ ntụ gypsum agwakọtara na 90% mụbara site na 8.8% ma e jiri ya tụnyere nke ntụ ntụ gypsum agwakọtara na 60%, ike mgbagọ kwekọrọ mụbara site na 2.6%. Iji chịkọta, enwere ike ikwubi na ọnụọgụ ntụ ntụ gypsum nwere mmetụta karịa na ike mgbagọ karịa ike mgbagọ.
2.2 Mmetụta nke ihe dị arọ dị mfe na ihe ndị dị n'ime gypsum a na-akpọ desulfurized plastered
Ngụkọta ntụ gypsum, ntụ limestone na ngwakọta dị fechaa bụ 100%, ọnụọgụ ntụ gypsum edobere na ngwakọta ahụ anaghị agbanwe agbanwe. Mgbe ọnụọgụ microbeads vitrified bụ 4%, 8%, 12%, na 16%, plasta ọkụ ahụ Nsonaazụ nke ike flexural na compressive nke moto gypsum desulfurized.
N'otu afọ ahụ, ike flexural na ike compressive nke gypsum desulfurized dị mfe belatara ka ọdịnaya nke microbeads vitrified mụbara. Nke a bụ n'ihi na ọtụtụ microbeads vitrified nwere oghere dị n'ime ma ike nke ha dị ala, nke na-ebelata ike flexural na compressive nke gypsum plastering dị mfe. Mgbe ha dị afọ 1, ike flexural nke gypsum ntụ ntụ 16% belatara site na 35.3% ma e jiri ya tụnyere nke gypsum ntụ ntụ 4%, ike compressive dakọtara belatara site na 16.3%. Mgbe ha dị afọ 28, ike flexural nke gypsum ntụ ntụ 16% belatara site na 24.6% ma e jiri ya tụnyere nke gypsum ntụ ntụ 4%, ebe ike compressive dakọtara belatara naanị site na 6.0%. Iji chịkọta, enwere ike ikwubi na mmetụta nke ọdịnaya nke microbeads vitrified na ike flexural karịrị nke na ike compressive.
2.3 Mmetụta nke ihe na-egbochi ihe na-eme ka ihe ghara ịdị irè na ịtọ oge nke gypsum e ji ihe na-adịghị mma kpuchie nke e ji ihe na-eme ka ọ dị nro
Ngụkọta oke ntụ gypsum, ntụ limestone na ihe dị arọ bụ 100%, na oke ntụ gypsum edobere, ntụ limestone, ihe dị arọ na cellulose ether anaghị agbanwe agbanwe. Mgbe oke ntụ sodium citrate bụ 0, 0.1%, 0.2%, 0.3%, na-edobe oge nsonaazụ nke moto gypsum desulfurized dị nro a pịrị apị.
Oge mmalite na oge ikpeazụ nke gypsum desulfurized dị mfe a na-ete n'ime ite na-abawanye ka ọdịnaya sodium citrate na-abawanye, mana mmụba nke oge ntọala dị obere. Mgbe ọdịnaya sodium citrate dị 0.3%, oge ntọala mbụ na-agbatị nkeji 28, oge ntọala ikpeazụ na-agbatịkwa nkeji 33. Ogologo oge ntọala nwere ike ịbụ n'ihi nnukwu mpaghara elu nke gypsum desulfurized, nke nwere ike ịmịkọrọ ihe mgbochi gburugburu ihe ndị dị na gypsum, si otú a na-ebelata ọnụego mgbasa nke gypsum ma na-egbochi kristal nke gypsum, na-ebute enweghị ike nke gypsum slurry ịmepụta usoro nhazi siri ike. Mee ka oge ntọala nke gypsum dị ogologo.
2.4 Mmetụta nke ọdịnaya cellulose ether na ihe onwunwe nke gypsum desulfurized dị mfe
Ngụkọta oke ntụ gypsum, ntụ limestone na ngwakọta dị fechaa bụ 100%, na oke ntụ gypsum edobere, ntụ limestone, ngwakọta dị fechaa na ihe na-egbochi ya anaghị agbanwe agbanwe. Mgbe oke ntụ hydroxypropyl methylcellulose bụ 0, 0.1%, 0.2% na 0.4%, ike flexural na compressive na-esi na moto gypsum desulfurized dị fechaa pụta.
Mgbe ọ dị afọ 1, ike mgbagọ nke moto gypsum desulfurized dị mfe amụbaala ma belata ka ọdịnaya hydroxypropyl methylcellulose mụbara; mgbe ọ dị afọ 28, ike mgbagọ nke moto gypsum desulfurized dị mfe amụbaala. Ka ọdịnaya hydroxypropyl methylcellulose mụbara, ike mgbagọ gosipụtara usoro nke mbelata mbụ, wee mụbaa ma belata. Mgbe ọdịnaya hydroxypropyl methylcellulose dị 0.2%, ike mgbagọ ahụ ruru oke, ma gafere ike kwekọrọ na ya mgbe ọdịnaya cellulose dị 0. N'agbanyeghị afọ 1 ma ọ bụ 28d, ike mgbagọ nke moto gypsum desulfurized dị mfe ebelatala ka ọdịnaya hydroxypropyl methylcellulose mụbara, usoro mbelata kwekọrọ na ya na-apụta ìhè karịa na 28d. Nke a bụ n'ihi na cellulose ether nwere mmetụta nke njigide mmiri na ọkpụrụkpụ, ọchịchọ mmiri maka nguzozi ọkọlọtọ ga-abawanye ka mmụba nke ọdịnaya cellulose ether, na-ebute mmụba na oke mmiri-simenti nke nhazi slurry, si otú a na-ebelata ike nke ihe nlele gypsum.
Mmechi 3
(1) Ogo mmiri nke gypsum desulfurized na-eto nke ọma ka ọ na-etolite. Ka ọdịnaya nke ntụ gypsum desulfurized na-abawanye, ike mgbanwe na nrụgide nke gypsum plastering dị mfe gosipụtara mmụba zuru oke, mana mmụba ahụ dị obere.
(2) Ka ọdịnaya nke microbeads vitrified na-abawanye, ike flexural na ike nrụgide nke gypsum desulfurized plastered dị mfe na-ebelata dịka o kwesịrị, mana mmetụta nke ọdịnaya nke microbeads vitrified na ike flexural dị ukwuu karịa nke ike nrụgide.
(3) Ka ọdịnaya sodium citrate na-abawanye, oge ntọala mbụ na oge ntọala ikpeazụ nke gypsum mort desulfurized dị nro na-adịte aka, mana mgbe ọdịnaya sodium citrate dị obere, mmetụta ya na oge ntọala anaghị apụta ìhè.
(4) Ka ọdịnaya hydroxypropyl methylcellulose na-abawanye, ike nrụgide nke gypsum desulfurized dị nro na-ebelata, mana ike flexural na-egosi usoro nke ibuli elu na mbelata na 1d, na 28d O gosiri usoro nke ibelata na mbụ, wee mụbaa na emesịa belata.
Oge ozi: Feb-02-2023