Abstract
In response to ferric bauxite comprehensive utilization challenge,both the interaction between the ore and soda-lime,and the interaction between soda ash and lime in heat preservation progress were investigated.The study showed,in reduction atmosphere,most Fe2O3 in ore was reduced to iron,only a small part of Al2O3 was converted into sodium aluminate,the others still existed in forms of sodium aluminosilicate or corundum rather than sodium aluminate,leading to low dissolution rate of Na2O and Al2O3.This is because of the low activity of CaO,the Na2O and Al2O3 in sodium aluminosilicate can not be completely displaced.For the dilution effect of low active lime,the relative content of soda ash reduced.So the interaction between ferric bauxite and soda ash was weakened.
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