Sweet Potato Starch Processing Steps
Raw materials (sweet potato) → washing → crushing → one-off basket → sedimentation → skimming cylinder → sedimentation → second pass basket → sedimentation → skimming cylinder → powder, hanging bag → drying → packing.
The sweet potatoes in turn washed into the sweet potato washing machine. Wash the sweet potato by the roller rotation in turn sent to the stone above the funnel. In the funnel by the hob cutter into small pieces of potato, potato chips directly into the stone mill hole by grinding into a potato paste (fresh potato and water ratio of 1: 3). Potato paste after 80 mesh through Lo machine, powder residue from the export, starch milk into the stone below the main precipitation tank. The side-cylinder starch milk was introduced from the master cylinder by a pump. The starch milk in the two sedimentation tanks was allowed to settle for 2 hours. Still sedimentation, starch milk upper juice with impurities, with the scoop to write it out, not re-use. In order to speed up the separation of starch milk in the two large cylinders, the 500 kg of acid pulp can be preliminarily prepared and mixed into two large cylinders to speed up the precipitation separation of starch. Then, the stationary precipitation was continued for 3 hours. After the upper acid slurry can be skimmed off as the next use of pulp. The skimmed starch bottom layer is diluted 1: 1 ratio of starch to fresh water. By 120 mesh over Lo Lo machine over the basket, pumped into the pump by the other two precipitation tank. After 24 hours, the upper starch slurry was skimmed for the next time. After the cylinder can be played from the powder, hanging bag for dehydration. With a spatula to remove the starch one by one from the cylinder placed in a clean white cloth bag, sub-package hanging on the prepared stakes for dehydration 7-8 hours. Will be dehydrated starch removed from the hanging bag broke into small pieces placed on top of the raft, lined stacked placed in a ventilated place to dry naturally. After drying for the finished product, can be crushed packaging.
