杂质成分与钛液过滤性能实验研究

采用向钛液中人为引入杂质成分的方法，对比分析和研究了二氧化硅、氧化钙、氧化镁和氧化铝等杂质成分及含量与钛液过滤性能的关系。研究结果表明，二氧化硅和二氧化钛胶体对钛液过滤性能有明显影响，二氧化硅质量浓度为0.07 g/L左右时，钛液过滤时间一般约为5 min，且质量浓度越高，钛液过滤时间越长；二氧化钛胶体质量浓度超过3 g/L后，钛液过滤时间增加幅度减缓。氧化钙、氧化镁和氧化铝对钛液的过滤性能没有明显影响。向钛液中引入絮凝剂，可有效降低二氧化硅胶体的含量，对氧化钙亦有一定程度的絮凝作用。

Research on impurity components and filtration performance of titanyl sulfate solution

The relationship of the impurity components，such as SiO2，CaO，MgO，and Al2O3 and their contents with the filtration performance of titanyl sulfate solution was compared and studied.The contents of impurity in the titanyl sulfate solution were changed by appending impurities artificially.The results showed that the colloid SiO2 and TiO2 were the main influencing factors on the filtration performance of titanyl sulfate solution，while CaO，MgO，and Al2O3 with little effect to it.The filtration time was about 5 min commonly when the mass concentration of SiO2 was about 0.07 g/L，and the higher the mass concentration，the longer the filtration time.The increasing speed of filtration time lowered when the mass concentration of TiO2 colloid exceeding 3 g/L.The adding of flocculant could reduce the content of colloid SiO2 effectively and slightly to CaO at a certain extent with its sorption.