Aluminous MAAs: muaj pes tsawg leeg, yam ntxwv, daim ntawv thov

Ib qho ntawm feem tsim nyog thiab tseem ceeb tshaj plaws cov ntaub ntawv nyob rau hauv kev tsim kho ntawm ib tug xis mas. Nws yog siv rau qhov siv thiab ua asbestos-xis mas, ua vaj tse thiab siv tam qhob ntsiab, mortars. Los ntawm MAAs yog meant ib pab pawg neeg ntawm hydraulic losis tswvyim dabtsi agents, cov neeg uas yog lub hauv paus feem yog aluminates thiab silicates yog tsim thaum lub sij hawm ua ntawm raw cov ntaub ntawv ntawm ib lub high school kub thiab txo kom tag nrho los yog ib nrab melting.

nta muaj pes tsawg leeg

Siv raws li raw khoom ntshiab limestone thiab bauxite. Cov yav tas yog lub pob zeb, uas yog tsim los ntawm cov impurities thiab hydrates. Bauxite tau coob leej ntau tus nyob rau hauv lub muaj teb rau zus tau tej cov adsorbents, refractories, txhuas thiab lwm tus neeg.

aluminous MAAs txawv predominance Odnokaltsievy aluminate clinker nyob rau hauv muaj pes tsawg leeg, txiav txim lub ntsiab yam ntxwv ntawm cov phau ntawv. Tsis tas li ntawd muaj gehlenite li ballast impurities thiab dicalcium silicate, ib tug yam ntxwv uas yog cov qeeb hardening.

Thaum tov nrog dej pib haus dej Odnokaltsievy aluminate. Tshuaj yog tsim nyob rau tib lub sij hawm pab raws li ib feem ntawm lub solidified khoom. Nthuav MAAs pib mus teem tom qab 45-60 feeb, ib tug ua tiav solidification tshwm sim tom qab 10 xuab moos. Tau hloov qhov chaw lub sij hawm, qhov sib ntxiv ntawm accelerators (gypsum, txiv qaub), los yog retarders (calcium chloride, boric acid).

yam ntxwv ntawm

Aluminous MAAs yog ib tug uas tsis muaj peev xwm mus deform, raws li txoj kev pob zeb muaj ib coarse qauv. Nyob rau hauv tas li ntawd, lub xub ntiag ntawm hydrated nyhav monoaluminate ua rau tsis loj nyob rau hauv lub tsim.

Yam ntxwv rau cov khoom rov loj npaum li cas ntawm tshav kub tshwm sim nyob rau hauv thawj ob peb teev ntawm hardening. Qhov no feature yog pab tau thaum nqa tawm qhob ua hauj lwm nyob rau hauv lub caij ntuj no, tab sis nyob rau tib lub sij hawm thiaj li muaj cov kab kev los ntawm siv rau lub loj heev lug.

Nthuav MAAs ua los ntawm alumina, nws yog hais txog cov xov tooj ntawm cov hluav taws-resistant cov ntaub ntawv. Nws yog siv rau tsim ntawm refractory hydraulically solidifying kev daws teeb meem nyob rau hauv nrog cov refractory Cheebtsam li chamotte, ore, magnesite.

Nyob rau hauv tas li ntawd, cov txawv lwm feature yog lub MAAs zeb uas muaj zog, thiab txiav txim seb ib tug tseem ceeb kuj tiv thaiv cov roj, kua qaub, hiav txwv dej.

Qhov no cov ntaub ntawv uas muaj peev xwm sawv ntawm qhov uas muab tshuaj khib thiab qhob nrog ib tug txiav txim tsis kam mus ya raws thiab ceev. Tab sis nws yog cov nquag mus ceev ceev kev puas tsuaj nyob rau hauv tus ntawm alkali thiab ammonium ntsev.

ntau lawm

Aluminous MAAs yog manufactured los ntawm ob txoj kev: los ntawm calcining ua ntej sintering thiab melting nyoos batch. Rau lub caij nyoog kawg no txoj kev yuav tsum tau cov kev npaj ntawm tus nqi, melting ua raws li los ntawm txias, crushing thiab kev sib tsoo. Cub kom qhuav txoj kev yus thawj lub Cheebtsam, zoo sib tsoo thiab nws mus txog rau thaum ib tug uniform homogenizing, thiab ces granulated los yog hmoov sib tov twb raug rho tawm haujlwm nyob rau hauv furnaces ntawm ntau hom. Tom qab cov ntaub ntawv uas yog txias thiab pulverized.

Maas Pob zeb acquires tsawg zog nrog ua solidification kub vim hydroaluminate recrystallization. Yog li ntawd ua khoom tsis raug autoclave kev kho mob thiab steaming.

Tsawg intensive hardening tshwm sim nyob rau sab kub. Yog hais tias cov huab hwm coj yog txias mus rau negative qhov tseem ceeb yuav tsum zoo tsis yooj yim sua rau tua nrog dej, ntxiv txij nkawm ntawm haum kub tej yam kev mob.

aluminous MAAs hom

Muaj 2 hom ntawm cov khoom: standard thiab siab alumina xis mas. Txiav txim tus cim rau lub thib peb hnub tom qab lub zus tau tej cov kuaj. Muab tus nqi thiab tsis muaj kev MAAs raw khoom yog pom tau hais nyob rau hauv ib tus me me volume. Cov khoom yog ib tug zoo hmoov ntawm dub, xim av los yog tsaus ntsuab nyob rau hauv cov xim. Maas, aluminous MAAs, uas nws nqi pib thaum 40 rubles ib kg, tau ntim rau hauv ntim thiab hnab ntawm 50 kg. Muaj peev xwm mus sai sai ncuav nyob rau hauv cov dej yog cov tseem ceeb tshaj plaws yam ntxwv.

daim ntawv thov

Nws yog siv rau txoj kev ua kev reinforced lug qhov twg lub pob zeb ua yog mus cuag tus tsim lub dag lub zog nyob rau hauv 1, 2 los yog 7 hnub, thiab kuj rau cov kev siv ntawm underground thiab tim ntug chaw uas yuav tsum tau siab sulphate. Nws yog ib nqi sau cia cov high efficiency nyob rau hauv lub rov qab los ntawm cov txuas hniav thiab cov vaj tse, sai tsim ntawm cov me nyuam yaus rau cov tsheb thiab foob kev puas tsuaj nyob rau hauv maritime thauj.

Aluminous MAAs GC 40 tau pom nws daim ntawv thov nyob rau hauv cov creation ntawm expanding compositions - nws yog uas tsis yog-shrinking waterproof, waterproof widening thiab expanding MAAs, aluminous xis mas.

pab nta

Aluminous MAAs phau ntawv yog ib tug khoom yeeb tshuaj, thiab siv tau rau thaum tshav kub kub-resistant mortars, wherein sai solidification nyob rau hauv huab cua thiab nyob rau hauv cov dej. Nws yog tsim los ntawm txoj kev zoo sib tsoo nyoos sib tov nrog ib tug high school cov ntsiab lus ntawm alumina thiab hlawv kom fusing los yog sintering. Tua yog nqa tawm hnub no mas nyob rau hauv hluav taws xob los yog lub moj tej tawg cub tawg rau lub melting lub xeev. Nws yog tsis tsim nyog nyob rau hauv ib tug muaj zog sib tsoo ntawm nyoos cov khoom xyaw, thiab muaj peev xwm tshem tawm silica thiab hlau.

Hom aluminous MAAs khoom impart nce kam mus rau lub tebchaw starch, saline, lactic acid, sulfur thiab ua rau kom qhov kub thiab txias kuj txog li 1700 degrees.

Nyob rau hauv tas li ntawd, tej yam uas ntxhia dej yog txo vim muaj cov impossibility ntawm tsim ntawm calcium hydrate los ntawm reacting nrog ib tug aqueous nruab nrab. Kuj mus sulfate xeb yog tau vim hauv lub qhaj ntawv hydroaluminate tricalcium hom. Maas raug corrode nyob rau hauv ib tug alkaline cheeb tsam, ib tug concentrated tshuaj ntawm magnesium sulfate thiab active acidic xov xwm.