Dab tsi yog Txoj Kev Npaj Ntawm Aluminium Hydroxide

Dab tsi yog txoj kev npaj ntawm aluminium hydroxide? Koj puas paub? Tom ntej no, cia's saib.

1, Bayer txheej txheem

Cov txheej txheem Bayer tau dhau los ua ntau yam kev hloov pauv hauv cov txheej txheem kev npaj tom qab ntau xyoo ntawm kev txhim kho, tab sis nws txoj cai tsis tau hloov. Lub hauv paus ntsiab lus ntawm cov txheej txheem Bayer yog siv cov kub sib txawv thiab cov lus qhia sib txawv kom ua tiav: nyob rau hauv qhov kub thiab txias, qhov sib xyaw ntawm alumina yog sib xyaw rau hauv cov tshuaj sodium hydroxide kom tau txais cov tshuaj sodium aluminate, thaum impurities xws li hlau thiab silicon. yuav tsis yaj hauv hydrogen. Tom qab cov tshuaj sodium oxide sib cais, qhov kub thiab txias tau qis dua, thiab cov qauv saum toj no tau thim rov qab kom tau txais cov niam cawv ntawm aluminium hydroxide thiab sodium hydroxide, thiab niam cawv ntawm sodium hydroxide tuaj yeem tsim nyob rau tom ntej. Kev npaj ua lag luam ntawm alumina feem ntau kuj siv cov qauv no, thiab cov khoom tau txais aluminium hydroxide yog ci thiab dehydrated.

2, soda txiv qaub sintering txoj kev

Cov dej qab zib txiv qaub sintering txoj kev yog calcin bauxite thiab limestone ntawm qhov kub thiab txias kom tau txais sodium aluminate khoom, thiab tom qab ntawd maj mam cais cov khoom tsis huv, cov hlau oxide yooj yim hydrolyzed sodium ferrite, silicon oxide thiab titanium dioxide daim ntawv insoluble calcium silicate thiab calcium titanate nyob rau hauv Cov dej sib cais kom tau txais cov tshuaj sodium aluminate, thiab tom qab ntawd carbon dioxide tau nkag mus rau precipitate aluminium hydroxide. Txoj kev no tseem tuaj yeem siv los npaj aluminium hydroxide.