Proportions, cov khoom siv thiab kev tsim kho ntawm 5 phosphate-khi refractory castables (precast)

Phosphoric acid hardly reacts nrog kua qaub oxides ntawm chav tsev kub thiab tsis yog qhov nyuaj, yog li nws kuj tsis haum rau cov neeg sawv cev rau acidic refractories. Phosphoric acid reacts nrog amphoter oxides (piv txwv li cov khoom siv tawv ntawm lawv tuaj yeem tswj hwm tau rau kev siv ua tus neeg sawv cev ua kom tiav rau cov neeg muaj kev sib raug zoo.

01 High Aluminate Refractories Casab

Tuam Tshoj cov neeg ua haujlwm refractory xyoo 1960 pib lub suab nrov zoo nkauj, siv rau kev sib sau ua ke ntawm cov yam ntxwv lub cev.

Refractory Cov Khoom Siv Khoom Siv Hluav Taws Xob uas tsim muaj cov kua roj phosphoric no Nws cov kev ua tau yog teev nyob rau hauv Rooj 3.

Cov nyhuv ntawm cov kua txhuas dihydrogen phosphate tus neeg sawv cev ntawm lub zog ntawm siab Alumina Clinker, cov av nplaum clinker thiab cov av nplaum clinker thiab nyoos hauv qab no:

1) Lub zog flexural thiab thermal poob siab tsis kam ntawm n (p2o5): n (Al2o3) {56 ~ 2.48}}}}}}}}) thiab txhuas sulfate (loj agent 33% ~ 45%, qhov ceev nyiaj ceev faj 1.2 ~ 1.3g-cm}

2) When the mass concentration of phosphoric acid used for the preparation of aluminum dihydrogen phosphate solution is 65% and n(P2O5): n(Al2O3) = 3, the combined high-alumina castables have the highest flexural strength (>9MPA) thiab zoo dua thermal poob siab tsis kam (900 degree, huab cua txias 5 zaug), nrog ib lub zog hloov kho lub zog ntawm 55%.

3) Qhov zoo tshaj plaws ntawm txhuas dihydrogen phosphate daws tau ntxiv yog li 525% tom qab 5 zaug ntawm cov cua txias ntawm 950 degree, thiab lub thermal poob siab kuj yog qhov zoo.

4) Lub alumina siab Castables sib xyaw ua ke nrog tus neeg muaj kev xaiv los ntawm cov khoom siv ntawm 4,6%, thiab cov khoom siv hluav taws xob ua tau zoo ntawm 68.7% tom qab lub zog cua txias ntawm 950 degree rau 5 zaug.

Cov kws tshawb fawb los ntawm Henan University of Science thiab Technology Npaj High Aluminium Dihydrogen phosphate ntawm kev ua yeeb yam ntawm cov khoom siv, thiab cov txiaj ntsig zoo ntawm cov khoom siv, thiab cov kev ua tau zoo tshaj plaws ntawm cov khoom siv, thiab cov kev ua tau zoo tshaj plaws ntawm cov khoom siv tau ua tiav thaum muaj nyiaj ntxiv yog 12% ~ 15% (w). Aluminium Dihydrogen phosphate ua ke nrog cov txheej txheem siab, sib xyaw rau lwm tus, kev sib xyaw ua ke, tom qab kev sib xyaw ua ke, kev txuag ntuj rau 24h, kev kho mob, kom qhuav thiab kho cua sov.

02 Kev ua kom sov sov kom sov hnav-resistant Castables rau kev sib ncig lub txaj pw

Ib lub tuam txhab hauv Jiangxi tsim ib hom kev ua kom sov so kom sov hnav-res resistant casible rau ncig lub txaj boiler boiler boiler.

The product is supplied in two groups: Group A is prepared as wet material, 10{{20}}kg of industrial phosphoric acid with 85% mass concentration is heated to 90 degree in the reaction pot, at the same time, 80kg of water and 26kg of activated aluminum hydroxide are blended into a paste, and the paste is added into the reaction pot slowly under stirring, Thiab tom qab cov tshuaj tiv thaiv tiav, cov kev daws teeb meem yog xim tsis muaj xim thiab pob tshab colloid. Tswj viscosity yog 45 s. Nyob rau tib lub sijhawm, 180g oxalic acid Toas yaj ua ntej, thaum cov tshuaj tiv thaiv kua dej txias rau 50 degree, cov khoom siv ua kom pom tseeb, cov khoom siv cuav uas yog, nplaum; Kev siv cov alumina tshwj xeeb 3 ~ 1 hli 90kg, tsawg dua los yog sib npaug rau ntawm 0.25 m3 cov khoom siv ntub dej rau hauv 0.25 m3 cov ntaub ntawv ntub dej, 15kg ib lub hnab ntim kom siv. Pab b yog khoom siv tau yooj yim, nyob rau hauv tib lub sij hawm, ntxiv-ntawm cov neeg saib xyuas microses 30kg, ntxiv rau cov neeg saib xyuas microses 30kG, yog, pab pawg b qhuav cov khoom, txhua lub hnab ntawm 4kg ntim tau siv. Thaum siv, ib lub hnab ntawm pab pawg ib thiab ib lub hnab ntawm pab pawg b tuaj yeem siv rau kev tsim kho tom qab sib tov lossis tshuab. Cov kev ua tau zoo ntawm cov phosphate sib khi ua ke hnav-resistant caslesables muaj teev nyob rau hauv rooj 4.

03 Corundum-Mullite hnav-resistant Refractory Casab

Ib lub tuam txhab hauv Guayang tau tshaj tawm cov kev tsim muaj ntawm "Corundum-mullite hnav-resistant refractory castables".

Npaj cov neeg sawv cev khi: Muaj cov txhuas akoxoric hmoov 2%}}} 9 {0 ~ 1 {00 degree, tuav tau kub rau 3 {89}} ~ 60min kom npaj. Kev npaj cov khoom ntxiv: Dawb corundum hmoov 60% ~ 80% (w), borica micro-hmoov 5% (w), kev faib ua feem ntawm txhua cov khoom siv raw co-milling 20 ~ 30min. Tus neeg ua haujlwm nyuaj rau cov ntshiab calcium aluminate cement. Kev npaj ntawm cov av ntub dej: Corundum thiab Mullite ua kev sib sau, 8 ~ 35% (W), 5% (W), Tus neeg saib xyuas tus neeg saib xyuas rau 10% ~ 18% (w). Kev npaj ntawm castables: 89% ~ 96% (w) ntawm ntub av, 2% ~ 6% (w) ntawm tus neeg ua kom tawv tawv, 2% ~ 5% (w) ntawm cov neeg sawv cev tawv. Lub cev nqaij daim tawv thiab tshuaj lom neeg ntawm cov zaub mov ua tau raws li hauv qab no: W (Al2o3) ntau dua lossis sib npaug ntawm 90%, W (Sio2) ntau dua lossis sib npaug li 5%; Bulk ntom ntau dua los yog sib npaug rau 3.00g.ci {57}}, thermal poob siab tshaj lossis sib npaug ntawm 25 zaug; Compressive lub zog ntau dua los yog sib npaug rau 90MPA, Flucural zog ntau dua los yog sib luag rau 12mpa, kab hloov pauv}. 2% ~ 0.2% ntawm 11H kev kho mob; Compressive lub zog ntau dua los yog sib npaug rau 160MPA, Flucural zog ntau dua los yog sib luag rau 12Mpa ntawm 1100 degree rau 3h degree; Compressive lub zog ntau dua los yog sib npaug rau 160MPA, Flucural zog ntau dua los yog sib npaug nrog 12mpa, kab hloov pauv}. 2% ~ 0.2%; Compressive lub zog ntau dua los yog sib npaug rau 160MPA, Flucural zog ntau dua los yog sib luag rau 12Mpa, Flexural Hloov Pauv. 2% ntawm 1100 degree rau 3H kev kho mob. Lub zog loj dua los yog sib luag rau 160MPA, Flucural zog ntau dua los yog sib npaug ntawm 28mpa, kab hloov pauv tus nqi {87 ~ 0.4%.

04 Lub Zog Loj Aluminium phosphathe ua ke nrog Corundum castables

High-zog aluminium phosphate ua ke nrog corundum castables tau tsim los ntawm kev siv hmoov zoo li cas los yog sib npaug ntawm 6% (ntxiv}. 15% (w) nh {10}} Corrosion, 60% (w) Daj Corundum hais, 40% (w) corundum nplua, thiab 3% ~ 5% (w) ntawm cov dej ntxiv. Lub cev thiab tshuaj lom neeg muaj nyob hauv rooj 5.

Phosphate cemented High Alumina Refractory Castables yuav tsum tau tsim los ntawm kev tshem cov hlau los ntawm cov ntaub ntawv raw, los yog siv cov ntaub ntawv ntshiab raw ntau li ntau tau. Txhawm rau tiv thaiv cov tshuaj tiv thaiv ntawm phosphoric acid thiab hlau los tsim cov kev sib tw tuaj yeem txuas ntxiv rau cov acid inhibitor. Pouring txheej txheem yog raws li hauv qab no: Raws li kev sib npaug ntawm ntau cov ntaub ntawv sib xyaw ua ke, cov hmoov av loj, tus poj niam ntxiv rau tom qab tov, thiab tom qab ntawd ntxiv qhov seem 4% ~ 5% (w) ntawm cov alumina siab. Tom qab ntawd ntxiv seem seem 4% ~ 5% (w) phosphoric acid thiab sib tov, ncuav rau hauv cov pwm txhawb nqa, thiab siv cov kev co.

Pwm rau molding yuav tsum tau coated nrog cov roj lossis cov ntawv muab tshuaj txhuam ua ntej, tshwj xeeb yog kom zam cov khoom lag luam thiab pwm. Txwv tsis pub, cov pwm yuav raug puas ntsoog, thiab tsis tuaj yeem ua rau tus tub ntxhais ua haujlwm ntawm 1 ~ 2th DEGREET

Phosphate-Bound High Alumina Refractory castables tsis muaj cov chav sov, yog li cov neeg sib cav sib ceg, yog li cov neeg sib cav sib ceg yog ntxiv kom ua rau cowables cowables. Tsuas yog cov khoom siv hluav taws xob tsis zoo thiab cov amorphous nrog cov hluav taws xob me me, thiab rau cov pa hluav taws xob zoo nkauj, thiab cov pa roj ntsha}. 097 nm yuav tsim cov khoom sib zog. Cov cagulants tshaj tawm yog: Ua kom Aluminium egaserder, thiab lwm yam mge, thiab 1% rau 1.5% ntawm cov xuab zeb ntim hluav taws xob magnesium nplua ntawm<0.125 mm is usually used.

Aluminium Dihydrogen phosphate thiab magnesium oxide hnov ​​li hauv qab no:

Los ntawm qhov pom tias qhov ua kom tawv nqaij tawv yog cuam tshuam los ntawm kev sib piv ntawm cov tshuaj magnesium zoo thiab tsis zoo} 2}} n (al2o 3+ mgo {{}}}}}}}, uas yog qhov sib piv rau cov neeg quav ntsej tau txiav txim siab.

Cov cua sov hloov nyob rau hauv cov txhuas dihydrogen phosphate thiab magnesium oxide tau raws li hauv qab no:

Thiab nws tuaj yeem suav tias yog qhov kev daws teeb meem ntawm MgGO tsis pub dhau ib lub sijhawm nyiaj txiag no [mg3 (po4) 2], lub ntsiab lus qis melting ntawm 1184 degree.

Nyob rau hauv phau ntawv ntawm amorphous refactories, nws tau taw qhia tias thaum mgo nplua hmoov yog siv los txhawb kev sib cav ntawm chav tsev kub thiab ua rau cov refractory castables los ntawm kev sib cais:

Vim tias cov kev tawm tsam sai ntawm Mgo thiab phosphoric acid, nws cov nyiaj yuav tsum tau nruj me ntsis kom tau txais cov chaw tsim nyog thiab qhov nyuaj ua kom tau raws li kev tsim kho.

Thaum ntxiv alaent kom zoo nkauj rau phosphate sib khi ua ke ntawm cov khoom siv roj ntsha siab thiab cov calshothoricial hauv daim duab 1. Hlau ions hauv cov neeg sib xyaw ua ke, kev tsim ntawm cov cement zoo ntawm phosphoric acid, aqueous phosphat lossis kom ua cov khoom nag lossis daus. Tshuaj rau tus neeg sawv cev tshuaj phib lav, thaum ntxiv cov khoom siv tawv me me thiab xws li nrog cov tawv nqaij tawv tawv ua rau muaj kev sib tsoo ntawm cov khoom sib tsoo.

Cov nyhuv ntawm High Alumina Yooj Yim Ntxiv rau ntawm cov khoom ntawm phosphate-bound high alumina casterab yog suav nrog hauv Table 6.

Thaum txhuas hydroxide yog ntxiv los ua tus neeg txhawb nqa kev sib cav, cov tshuaj lom neeg hauv qab no tshwm sim thaum lub sijhawm ua kom tawv thiab cua sov sov:

Tom qab cua sov nyob rau 500 degree, XRD cov cim qhia tau pov thawj tias muaj -al (PO3) 3, qhov tsawg-kub hom ib. Tom qab 586 degree, lub phosphorite-alumina hom nyiaj-1 tau hloov pauv los ntawm -type rau -type; Los ntawm 1065 degree phosphorite-quartz hom nyiaj txiag Polple4 tau hloov pauv mus rau Argillaceous-quartz hom nyiaj txiag ib asne4; Thaum qhov ntsuas kub tau siab dua 1300 degree, argillaceous-quartz hom nyiaj nyiaj txiag no, tau decomposed rau hauv al2o3 thiab p2o5; Lub P2O5 precipitates thiab tom qab ntawd txuas ntxiv sublimates thiab tsis suav.

Cov txheej txheem fab raug hluav taws xob thiab cov khoom ntawm precast thaiv ntawm high alumphate castables rau kub cug cleaces:

(1) Cov pwm tag nrho. Vim hais tias cov phosphoric acid yuav hnov ​​mob nrog cov hlau, nplaum pwm yog qhov loj dua li feem ntau siv cov ntoo pwm. Tom qab cov pwm raug txheeb xyuas thiab tsim nyog, ua ntej thauj cov khoom, ua ntej txheej txheej ntawm daim ntaub nyias nyias lossis ntawv sab hauv, thiab tom qab ntawd siv ib txheej ntawm butter.

(2) npaj thiab cuab cov khoom siv. Hnov cov aggabate thiab hmoov nyob rau hauv kev faib ua feem thiab muab tso rau hauv ib qho chaw nrog kub siab dua 20 ~ 24h kom cais cov tshuab hluav taws xob.

(3) Remixing thiab kev co. Tom qab txuas cov av nkos, hauv cov khoom siv, ua ntej ntxiv 2% ~ 3% alumina acid, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd nws ntxiv rau kev sib xyaw, txhua zaus sib xyaw tsis pub tsawg tshaj 3 ~ 5min. Sib xyaw cov av nkos tam sim ntawd thauj mus rau hauv pwm, xa mus rau lub rooj zaum vibrating, kom txog thaum cov av nkos nyob rau hauv cov pa hluav taws kub.

(4) kev txij nkawm thiab kev puas tsuaj. Tom qab moulding yuav tsum muab tso rau hauv lub tsev saum toj kawg li 20 ~ 8h, zoo li qub 2H tuaj yeem muab tshem tawm sab tuaj pwm, 6h tuaj yeem muab tshem tawm tom qab cov pwm hauv qab.

(5) Lub cev nqaij daim tawv thiab tshuaj lom neeg ntawm cov khoom lag luam prefabricated muaj nyob hauv Table 7.

(6) daim ntawv thov thiab ci. Muaj ob hom phosphate-sib khi ua ke casible precast cov khoom tsim tawm: ib qho kev tua hluav taws kub ntawm 1300 degree thiab ib qho precast thaiv tsis raug rho tawm haujlwm. Cov neeg tua hluav taws uas tau ua tiav nyob rau hauv qis dua (12m) ntawm cov hluav taws kub ua kom sov, thiab cov pob zeb sib txuas tau ua rau sab qaum (25m). Lub ci curves tau raws li nram no:

Lub rauv rooj khiav dej lub ru tsev kub thaum kawg tau txog 14 {6}} {15}} exhaust degree thiab kev pa ncho nce mus txog 500 degree. Daim ntawv thov ntawm kev sib sau ua ke phosphate refractory casable rauv yooj yim ua ntej prefabricated thaiv. Cov ntaub ntawv raw thiab cov lus sib piv yog: ⅱ Qib Alumina Aggrate tsawg dua lossis sib npaug nrog rau 0.088mm suav tau rau 30%, qis dua lossis sib xyaw ua ke nrog rau 0.088, sib tshuam nrog rau 0.088 Prefabricated Thaiv cov txheej txheem ntau lawm rau: Phosphate Refractory Castables yuav tsum tau muab ob Hooks, uas yog nruab nrog ob qho tib si ntawm cov yeeb nkab steel qhwv ob txheej ntawm cov ntawv roj. Cov kev kho cua sov yog:

Thov siv nyob rau hauv cov kauj ruam cua sov cua sov (16356mm × 2204mm), txhua qhov chaw kub, txhua tus neeg caij tsheb, nrog lub neej ncua ntau dua 3 xyoos. Phosphate kev sib raug zoo Alumina rectractories muaj cov yam ntxwv hauv qab no: Tsis cuam tshuam los ntawm cov hauv qab no, tshwj xeeb tshaj yog nyob rau lub caij ntuj no, kev ua kom yooj yim, yuav tsis muab cov kab nrib pleb; Tsis muaj lub zog tsawg nyob rau hauv lub xeev kub (tshwj xeeb hauv nruab nrab thiab qis kub kub); kev ua kom siab ntev; Zoo heev ua rau swb; Kuj mus rau bursting, zoo thermal poob siab kuj.

Zinfon Refractory Technology Co., Ltd

Peb yog cov khoom siv hluav taws xob refractory ua ke R & D, kev tsim khoom, kev tsim kho, cov ntaub ntawv ua lag luam thiab kev lag luam.

Peb tab tom muab ntau cov hlau nplaum thiab alumina rectractories nrog rau ob qho khoom siv thiab cov khoom tsis yooj yim, cov khoom siv raw thiab cov khoom siv tshuaj lom neeg.

Peb muaj ntawv pov thawj rau ISO9001, ISO14001, ISO45001 thiab lwm lub tebchaws thiab hauv zos pov thawj raws li nram no:

Xa Kev Nug Tam Sim No