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钠硼解石含有大量的结晶水。采用煅烧法可以将固体组分中的一部水脱去,得到一种多孔结构物质,以提高浸出反应速率。采用醋酸铵作为浸出溶剂,研究煅烧钠硼解石样品在不同温度下的溶解情况。研究了反应参数对煅烧钠硼解石溶解的影响。研究发现,煅烧样品的溶解速率高于未煅烧样品的溶解速率。在煅烧温度低于150℃时,煅烧钠硼解石的溶解速率随着煅烧温度的升高而加快。钠硼解石的浸出反应速率符合化学反应控制模型。溶解过程中的活化能为41.5kJ/mol。
Sodium borosilicate contains a lot of crystal water. A calcination method can be a solid part of the water off, to obtain a porous structure, to improve the leaching reaction rate. Ammonium acetate was used as leaching solvent to study the dissolution of calcined sodium-borohydrides samples at different temperatures. The effect of reaction parameters on the dissolution of calcined sodium borohydrides was studied. The study found that the dissolution rate of the calcined sample was higher than the dissolution rate of the uncalcined sample. When the calcination temperature is lower than 150 ℃, the dissolution rate of calcined sodium borohydrins increases with the calcination temperature. The leaching reaction rate of sodium boronite meets the chemical reaction control model. The activation energy during dissolution is 41.5 kJ / mol.