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during the high concentration leaching. However,sodium carbonate and free caustic soda concentrations have no remarkable effect on it,thus they are the secondary factors compared with Al2O3......
digestion rate at 245°C is higher than that at 145°C due to the more pronounced conversion of aluminogoethite to hematite. The soda consumption during the digestion process decreases due to lime addition......
, proportioning molar ratio, spent liquor’s caustic soda mass concentration, digestion temperature and digestion time on the digestion process were investigated systematically. The results show that alumina-sillicon ratio and sodium-sillicon ratio of red mud decrease obviously with increasing lime amount. Increase of lime charge will effectively reduce soda consumption. The suitable conditions......
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of original new Sand and soda content in the remainder on the surface ofsand grain is about 0.I%.It is assumed that the sieve method may be replaced by theimage analysing computer in sand grain-size......
P-type SnO thin films prepared by reactive sputtering at high deposition ratesC.Guillén,J.Herrero摘 要:SnO is an ideally suitable p-type conductive material, with large hole mobility, and has attracted great interest in connection with next-generation electronic applications. In the present work, tin oxide(SnOx)thin films were deposited on unheated soda......
variation of lithium ion in sodium aluminate solution with addition of synthetic lithium aluminate was investigated. Elevating temperature, increasing caustic soda concentration, reducing alumina... of caustic soda [13–15]. However, the solubility of lithium aluminate hydrate in sodium aluminate solution is more complex because of high ionic strength, multiple components, and uncertain solution......
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time, or increasing caustic soda concentration enhances the conversion ratio of calcium oxalate in sodium aluminate solution; as a consequence, anti-causticisation occurs. Stability of calcium... and easy co-precipitation with alumina trihydrate (ATH) in seeded precipitation processes lead to low seed precipitation rate, fine ATH, poor alumina quality, considerable caustic soda loss......
