Siv: hauv kev tsim cov txhuas hydroxide. Cov khoom siv tshiab aluminium hydroxide crushed steam ntawm 120 txog 250 ° C, cov khoom sib xyaw profilebuy condense thiab thickened kom tau txais cov dej ncua nrog cov khoom khov ntawm 50 txog 300 g / l thiab sodium oxide hauv cov kua theem ntawm 0.05 - 5 g / l Cov dej ncua yog qhia rau hauv cov kua aluminate supersaturated, subjecting cov extract tau txais ncua nyob rau hauv kev sib xyaw, sib cais cov txhuas hydroxide sib cais los ntawm cov dej cawv niam thiab ntxuav. 1 Cp f-crystals, 1 Il., rooj 1.

Qhov kev tsim kho tshiab no cuam tshuam txog kev tsim cov txhuas hydroxide, thiab tshwj xeeb tshaj yog rau kev tsim cov txhuas hydroxide zoo los ntawm cov kua dej ntawm sodium aluminate.

Ib txoj kev tau txais cov txhuas hydroxide zoo [1] uas cov txheej txheem tau ua ob theem. Hauv thawj theem, cov kua aluminate raug neutralized nrog hydrochloric acid, thiab cov txhuas hydroxide uas tshwm sim yog siv los ua cov noob decomposition ntawm cov kua supersaturated aluminate decomposition hauv theem thib ob. Yog li ntawd, cov txhuas hydroxide nrog cov qauv ntawm hydrargillite, uas yog siv rau ntau lub hom phiaj, piv txwv li rau prigotovit ib qho tshwm sim ntawm kev neutralization ntawm caustic alkali aluminate kua. Cov txhuas hydroxide uas tshwm sim yog tus cwj pwm los ntawm kev sib kis siab thiab cov qauv amorphous ntawm cov khoom me me, qhia txog nws cov haujlwm noob siab hauv kev decomposition ntawm cov kua aluminate.

Txawm li cas los xij, txoj kev npaj noob no tsuas yog ua tau thaum siv cov tshuaj aluminate uas tau npaj tshwj xeeb, tsis muaj cov khoom tsis huv. Txwv tsis pub, cov txhuas hydroxide uas tshwm sim yuav nqus cov khoom tsis huv los ntawm cov tshuaj thiab cov noob ua haujlwm poob qis. Tsis tas li ntawd, nrog rau kev siv txoj kev no vim yog qhov ceev qis thiab kev lim dej, cov noob txhuas hydroxide tau txais kev pabcuam rau theem ob hauv daim ntawv ntawm kev ncua. Hauv qhov no, txhua yam tsim nyob rau theem thawj zaug ntawm ntsev poob rau theem ob, ua rau cov khoom tseem ceeb thiab ncig hauv lub voj voog ntawm cov tshuaj tsim khoom.

Qhov ze tshaj plaws rau qhov kev tsim kho tshiab rau lub ntsiab lus ntawm kev siv tshuab thiab qhov ua tiav tau zoo yog ib txoj hauv kev kom tau txais cov txhuas hydroxide zoo li noob siv txhuas hydroxide, zom rau thaj chaw tshwj xeeb, ntau dua lossis sib npaug rau 1 m²/g, thaum cov noob raug muab tso rau hauv cov kua aluminate hauv qhov ntau xws li tag nrho cov nplaim dej satic nws cov tshuaj lom neeg thiab yog li ntawd, cov noob ua haujlwm tsawg, uas yuav tsum tau siv ntau cov noob thiab cov nqi zog siab hauv nws txoj kev npaj.

Lub hauv paus ntawm kev tsim kho tshiab no yog los tsim ib txoj kev npaj cov noob txhuas hydroxide, uas ua kom nws cov noob ua haujlwm siab thiab cov tshuaj dawb huv, uas thaum kawg ua rau kev siv cov khoom siv thiab cov zog tsawg dua.

Rau lub hom phiaj no, txoj kev tsim cov txhuas hydroxide, suav nrog kev sib tsoo cov noob txhuas hydroxide, sib tov cov noob uas tau muab zom nrog cov kua supersaturated thiab rho tawm cov txiaj ntsig los ntawm kev sib xyaw, cov noob txhuas hydroxide uas tau muab zom ua pa ntawm 120-250^txogC. condense profile yuav sib tov nrog cov dej uas tau txais uas muaj 50-300 kg / m3³hmoov txhuas hydroxide, uas yog siv los ua noob.

Cov ntsiab lus tsim nyog ntawm sodium oxide nyob rau hauv cov kua theem ntawm cov tshuaj ncua kom tswj tau hauv 0.05 txog 5 g / L.

Sib tsoo txhuas hydroxide pa ntawm 120-250^txogMuab kev tau txais cov tshuaj lom neeg ntshiab aluminium hydroxide siab ua haujlwm noob. Tshawb nrhiav tus lej ntawm cov kab nrib pleb, chips thiab ledges, uas muaj cov qauv amorphous.

Cov qauv nto uas tau teev tseg txiav txim siab nws cov haujlwm noob siab thaum siv txhuas hydroxide ua noob.

Qhov txiaj ntsig siab tshaj plaws yog ua tiav thaum qhov kub ntawm cov pa hauv chav sib tsoo 120-250^txogC.

Thaum qhov kub poob qis dua 120^txogNrog rau cov tshuaj lom neeg ua haujlwm ntawm qhov chaw ntawm cov txhuas hydroxide uas tau tsoo yog tib yam li lwm txoj kev sib tsoo.

Qhov kub nce siab tshaj 250^txogNrog rau qhov zoo tshaj plaws tsis ua rau cov tshuaj lom neeg ntawm qhov chaw nce ntxiv, txawm li cas los xij, tus nqi ntawm lub zog thermal nce ntxiv rau kev npaj noob.

Thaum cov khoom khov kho hauv cov dej uas tau txais tom qab condensation paraphilias sib tov, 50-300 g / l noob kev ua ub no ncua siab tshaj plaws.

Qhov txo qis ntawm cov khoom khov hauv cov tshuaj ncua qis dua 50 g / l yuav luag tsis muaj kev cuam tshuam rau nws cov haujlwm tsis muaj zog, tab sis nyob rau hauv cov txheej txheem nws qhia txog ntau dej, uas xav tau kev siv nyiaj ntxiv rau nws cov evaporation.

Qhov ua rau cov khoom khov hauv cov dej uas muaj dej ntau dua 300 g/l ntawm nws cov dej num liab qab poob qis. Qhov no yog vim muaj kev txo qis ntawm x yog hom kua qaub-puag.

Cov ntsiab lus ntawm sodium oxide nyob rau hauv cov kua theem ntawm cov dej ncua hauv qhov ntau ntawm 0.05-5 g / l muab nws cov haujlwm siab tshaj plaws ntawm noob.

Qhov txwv qis ntawm qhov concentration yog txwv los ntawm cov ntsiab lus ntawm intracrystalline alkali-ntxuav txhuas hydroxide, tuaj rau kev sib tsoo.

Thaum qhov concentration ntawm sodium oxide siab tshaj 5 g / l noob kev ua haujlwm ncua kev ncua raug txo qis vim yog kev yaj ntawm cov qauv amorphous ntawm qhov chaw ntawm noob.

Txoj kev tsim cov txhuas hydroxide uas tau hais tseg yog ua tiav nrog kev siv cov khoom siv tsim thiab siv ntawm cov nroj tsuag hauv tsev: lub tshuab cua dav hlau hom ES-06; SP-1, thiab lwm yam.

Hauv lub tshuab sib tsoo dav hlau, kev sib tsoo tshwm sim yam tsis siv cov khoom siv sib tsoo siv lub hauv paus ntsiab lus ntawm cov khoom haus luam yeeb thaum sib tsoo cov khoom me me. Kev siv cov tshuab sib tsoo dav hlau yog qhov yuav tsum tau ua kom ntseeg tau tias cov txheej txheem tau teev tseg thiab tau txais cov txiaj ntsig kev siv tshuab xav tau.

Hauv cov boron uas muaj cov khoom siv ua kom txias, cov neeg uas ntws. Txias cov dej tsim tawm. Thaum cov pa no ua rau cov dej sib xyaw thiab tsim cov txhuas hydroxide hauv dej, uas tom qab sib xyaw ua ke siv hauv Kea.

Cov txhuas hydroxide los ntawm lub hopper 1 los ntawm lub hau ntswj 2 raug pub rau lub tshuab ua kom lub raj nrawm 3. Cov raj nrawm txhuas hydroxide ua kom lub zog vapor nrawm dua. Cov khoom me me sib tsoo, sib tsoo thiab tshem tawm cov pa hauv lub tshuab cais centrifugal 4. Cov khoom loj raug xa rov qab mus rau lub tshuab zeb ntawm Dorisol, thiab raug tsoo kom txog qhov loj me uas xav tau yuav raug khaws cia rau hauv lub kaw lus sau plua plav 5. Cov dej Paraphilias raug txias, sib xyaw, cov dej ncua 6 raug sib xyaw hauv cov khoom siv thickener 7, sib xyaw nrog cov kua aluminate supersaturated 8 thiab nkag mus rau hauv lub reactor 9, uas raug tswj hwm hauv qab kev sib xyaw. Tom qab soaking cov txhuas hydroxide raug sib cais los ntawm cov kua dej niam hauv lub lim dej 10, ntxuav thiab xa mus rau tus neeg siv khoom.

Kev sib piv cov ntaub ntawv los ntawm ntau qhov kev sim qhia tau hais tias kev sib tsoo ntawm txhuas hydroxide hauv lub tshuab cua tshuab ntawm 120-250^txogTom qab ntawd siv cov dej uas muaj 50-300 g/l khoom ua noob, nws ua rau cov txheej txheem ua haujlwm zoo dua thiab zoo dua vim yog kev tsim cov noob ntshiab, muaj cov noob ua haujlwm siab.

Industrial Prime p 1 kg ntawm txhuas hydroxide nrog qhov nruab nrab siv lead ua qhov loj ntawm 40 μm pulverized pa hauv lub chaw kuaj jet mill. Qhov kub ntawm cov pa ntawm qhov nkag mus rau lub jet mill yog 160^txogNrog lub siab ntawm 7 MPa. Qhov kub hauv lub chamber sib tsoo 140^txogC. qhov nruab nrab ntawm cov siv lead ua tom qab sib tsoo rau 2.0 μm.

Hmoov txhuas hydroxide, ua nyob rau hauv daim ntawv paraphilias sib tov, ntes hauv boron-muaj zaj duab xis hom. Lub condensation ntawm cov pa tsim los ntawm cov dej txias hauv boron-muaj. Tom qab condensation cov neeg uas ntws tau txais 10 l ntawm cov tshuaj uas muaj 100 g / l ntawm hmoov txhuas hydroxide thiab 0.4 g / l ntawm sodium oxide hauv cov kua theem.

0,04 l aqueous suspension yog sib xyaw nrog 1 liter ntawm aluminate kua uas muaj, g/l: Na₂O_ku130,9; Al₂O₃137,2; Na₂CO₃20,3; NaCl 12,2; Na₂SO₄5,4; cov pa roj carbon organic (Corg.) 12,4. Cov tshuaj uas tau muab tso rau hauv lub reactor thiab khaws cia rau hauv qab kev nplawm ntawm 55^txogC rau 24 teev

Qhov degree ntawm decomposition ntawm aluminate kua yog 50.2% ntawm cov khoom tsim tawm ntawm txhuas hydroxide 109,4, qhov nruab nrab loj ntawm cov siv lead ua nyob rau hauv cov av nkos yog 3.6 μm, cov ntsiab lus ntawm cov khoom tsis huv hauv txhuas hydroxide, Na₂O 0,42; Fe₂O₃0,021; SiO₂0,018.

Cov txiaj ntsig ntawm kev sim hauv cov txheej txheem uas tau thov, qhov zoo tshaj plaws thiab dhau C qhov ua tau zoo ntawm kev rhuav tshem tau ua tiav ntawm qhov kub hauv chav sib tsoo 120-250^txogNrog rau, cov ntsiab lus ntawm cov txhuas hydroxide uas tau tsoo hauv dej ncua 50-300 g / l thiab cov ntsiab lus ntawm sodium oxide hauv cov kua theem ntawm cov dej ncua ntawm 0.05-5 g / L.

1. TXOJ KEV tsim cov ALUMINUM HYDROXIDE, suav nrog kev sib tsoo cov noob txhuas hydroxide, sib tov cov noob txhuas hydroxide uas tau tawg los ntawm cov kua aluminate supersaturated, laus cov txiaj ntsig nrog kev sib xyaw, Lub Tsev Haujlwm tau tso tawm cov txhuas hydroxide los ntawm cov cawv niam thiab ntxuav, tus yam ntxwv hauv qhov kev sib tsoo ntawm txhuas hydroxide nqa tawm nrog chav ntawm 120 250^oNrog rau qhov profile tau txais, yuav cov tshuaj ncua condense thiab thickened kom tau txais cov dej ncua nrog cov khoom khov ntawm 50 txog 300 g / l thiab nws tau qhia rau hauv cov tshuaj supersaturated.

2. Txoj kev raws li p. 1, piav qhia tias cov ntsiab lus ntawm sodium oxide nyob rau hauv cov kua theem ntawm cov dej ncua kev kawm yog khaws cia rau hauv qhov ntau ntawm 0.05 txog 5.0 g / L.