In the process of industrial production of thermally conductive aluminum hydroxide, we have to filter other substances through filtering methods, and the quality of the filtration will determine the purity of aluminum hydroxide, so effective methods must be used to improve the filtration efficiency.

1. The viscosity of the slurry: the viscosity of the slurry has a greater impact on filtration. The greater the viscosity of the slurry, the slower the speed through the filter medium, the more difficult it is to filter, and the filter cake index is not good. Increasing the temperature of the slurry and reducing the concentration of the slurry can reduce the viscosity of the slurry, which is conducive to filtration.

2. Filtration pressure: The greater the filtration pressure, the stronger the filtration power and the faster the filtration speed. Therefore, effectively increasing the vacuum degree of the vacuum filter or the pressure of the positive pressure filter can greatly increase the productivity of the filter, but the filter pressure should not be too high, otherwise it will cause high filtrate floats and shorten the life of the filter cloth.

3. Filter media: The nature of the filter cloth has a significant effect on filtration. Generally, the larger the hole of the filter cloth, the easier it is for the filtrate to pass through, and the better the productivity. However, the larger the pore size of the filter cloth will cause the fine solid particles to be easily worn. Pass into the filtrate. At the same time, the life cycle of the filter cloth is also a very important factor. The filter cloth cycle is short and the operation rate of the filter equipment is reduced. Therefore, the selection of the filter cloth should be selected according to the actual situation.

4. Physical properties of solid materials: The particle size of the solid materials is the most important factor affecting the filtration performance. Generally, the coarser the particle size, the larger the pore size of the filter cake as a filter medium, the easier the filtrate penetrates, and the better the separation and filtration performance; However, solid materials with fine particle size can easily block the pores of the filter cloth, and as a filter medium, the pore size is small, resulting in a drop in the filtering speed.