The Solid liquid separator can be used in a dry method or a wet method, and the wet method is more accurate than the dry method. Because dry powder particles tend to have aggregates. When the dispersing agent is used for the wet sieving, the particles can be dispersed and the effect is better. When the solid-liquid separator is being screened, there are some matters that need to be emphasized.
For example, the sieving time of the solid-liquid separator is preferably determined by experiments, so that the time required to sift out 95% is best; the amount of solid-liquid separator is also appropriate, and the overload will make some particles unable to contact the screen; The liquid separator should also be oscillated to prevent the particles from blocking the sieve holes.
The calibration of the solid-liquid separator sieve is difficult. A sample is sieved, and the components above and below the sieve are discarded, and only the particles retained in the pores are taken. Take out and measure its diameter. If the particles are large, the weighing method can be used; if the particles are small, the Coulter method can be used, and the volume diameter thus obtained can be used as the effective diameter of the mesh. Ordinary solid-liquid separator mesh standard sieve, the minimum sieve hole is 40m. A micro-screen made by photolithography or electro-engraving, with a mesh diameter of at least 5 m.