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What are the main reasons for granulator discharging difficulty and low yield?

Answer: If a new ring die is used, first check whether the compression ratio of the ring die matches the raw material processed. If the compression ratio of the ring die is too large, the resistance of the powder through the die hole is large, the particles are pressed out too hard, and the yield is low. The compression ratio of ring die is too small, and the particles are pressed out and not formed. It is necessary to re-select the compression ratio of ring die to check the smoothness of the hole in the ring die and whether the ring die is circular. The discharging resistance is large, the particles are not smooth, and the discharging is difficult, and the output is lower.

If the ring die is used for a period of time, must check whether the inner wall of the ring die cone hole wear, whether the roller wear, such as serious wear can put the ring die processing repair, the wear cone hole countersink hole, the roller wear must be replaced, the ring die cone hole wear has a great influence on the output.

The gap between the ring die and the press roll should be adjusted correctly. In the production of livestock and poultry material, the spacing should be about 0.5mm. If the spacing is too small, the press roll will rub the ring die and shorten the service life of the ring die.

Pay attention to the time and quality of raw materials conditioning, especially to control the water of raw materials before entering the machine, the water of raw materials before conditioning is generally 13%, such as high water content, raw materials after conditioning water is too high (water ≥ 16%), there will be mold slip phenomenon, not easy to discharge.

It should be noted that the grinding fineness of the raw material should match the diameter of the die hole, and the grinding fineness of the raw material of small particle feed should be finer. At the same time, the quality and temperature of steam should be ensured. If the steam quality is poor (unsaturated steam with more water) and the tempering temperature is low, the curing effect of powder will be affected and the yield will be reduced.

To check the distribution of raw materials in the ring die, do not let the raw materials run one-sided, such as similar cases, must adjust the size of the feeding scraper position, so that the raw materials in the ring die uniform distribution, which can prolong the service life of the ring die, at the same time more smooth discharge