If your powder is very smooth, the powder of the light, the difference between some large, even when the powder mixed with a very uniform, in the future packaging, transport process will appear on the whole powder on the light weight of segregation, to the late process production difficulties, affecting the quality of production.
1, mixed with pre treatment: the key physical parameters affecting the effect of dry powder mixing are three: the particle diameter, the bulk density, the flow property. If there is a difference between the parameters of the mixed powder, the difference is not easy to mix evenly, and the material itself will have a segregation phenomenon. It is very difficult to mix them well when the difference between the most thick and the most of the different kinds of powder is too large. In this case, the most coarse powder is crushed in advance, so that the particle size is close to the average particle size of the powder, and then to participate in the mixing.
2, hybrid post processing: now many industries are still in the process of mixing the material to be screened, which will make the material has been mixed evenly caused two segregation. Now the perfect production process should be in the mixed directly into the next process, material screening impurities placed in front of the dry powder mixer, or directly stand on the mixing machine above, and then into the dry powder mixing machine to mix, to avoid the two segregation.
3, transport packaging: material well mixed directly into the next process, need to do to be used for packaging packaging, transport to avoid compaction compaction powder, relative displacement of gravity segregation phenomenon, can also be used for vacuum packaging, vacuum bag compaction process for transport; if after molding, to avoid the use of vacuum and screw rod delivery to the compressor storage bin, the same material due to weight and particle size, there will be segregation phenomenon.
