连续碳化法制备拟薄水铝石

介绍一种采用偏铝酸钠和二氧化碳分级串联连续碳化制备拟薄水铝石的工艺,生产过程中可实现稳定的进料和出料。引入一种用于气液混合的预溶气组件,改善偏铝酸钠溶液和CO2气体混合效果。采用XRD、红外光谱等表征产物。结果表明,采用连续碳化法可生产出性质稳定的拟薄水铝石产品,其各项性能指标均达到或超过市售的拟薄水铝石,孔径分布更为集中,产品的重复性和再现性更稳定。

Preparation of pseudo-boehmite by continuous carbonization

A kind of tandem continuous carbonization for preparation of pseudo-boehmite with sodium metaaluminate and carbon dioxide was introduced.The production process could realize continuous feeding and discharging.Dissolved air in advance was introduced to improve the mixing effect of sodium aluminate solution and CO₂.Products were characterized by XRD,IR and so on.It was concluded that using the continuous carbonization process could produce stable products whose pore size distribution was more concentrated,repeatability and reproducibility were more stable.Performance of the product could reach or exceed that on market.