The ceramic flat membrane has broad application prospects in the field of membrane water treatment,owing to their unique characteristics like high filtration accuracy, good chemical stability, appropriate price and long service life. What's more, it can effectively solve the problems of poor reliability, short life and high operation cost of organic membrane materials. However, there are few researches on the preparation and application of ceramic flat membrane in domestic, further exploitation work oriented to industrialization and engineering is extremely scarce, resulting in poor quality control of ceramic flat membrane. There is also less concern for the performance of slurry in domestic which is an important factor to determine the final forming quality of ceramic membrane. In this work, the high purity α-Al2O3 and silica sol are used as the main raw materials to prepare slurry, The effects of wet ball milling time, dispersant type and dosage, pH value on the properties of slurry were investigated in the production process of ceramic membrane. The results showed that the dispersion and suspension properties of slurry was optimal when the separation membrane slurry was wet milled for 6h, 3.5wt% sodium polyacrylate was used as dispersant at pH 9. |