How to slag and purify starch to obtain high-quality starch?

To produce high-quality starch, it is necessary to slag and purify the starch. Because the process of slag removal and purification is directly related to the taste and quality of starch. So, how to use modern starch production technology to slag and purify starch? This article will introduce you to the best-selling machines, centrifuge sieve, fine fiber sieve and hydrocyclone station used in the slag removal and purification section of starch production.

1. Starch slag removal—centrifuge sieve and fine fiber sieve

Considering that there are many fiber components in cassava raw materials, it is recommended to use a fine fiber sieve on the basis of a centrifuge sieve to realize the separation of starch pulp and slag. This can effectively remove the fiber components in the starch slurry and improve the purity of starch milk; at the same time, it can also reduce the refining and washing pressure of the subsequent hydrocyclone stations.

Usually four to five stages of centrifuge sieves are configured, and clean water is added to the last stage to form countercurrent washing, which can reduce the loss of starch in slags and control the starch content in slags to 2/1000. Both the centrifuge sieve and fine fiber sieve are equipped with automatic control front flushing and back flushing systems, which improves the good permeability of the screen and ensures the sieving effect of starch.

The structure of centrifuge sieve

2.Starch purification—hydrocyclone station

Hydrocyclone station is used to remove fiber, protein and cell sap out of starch milk to achieve the purpose of removing impurities and improving the purity of starch. In the whole hydrocyclone station, the starch slurry is concentrated and washed step by step from front to back, the process water is added at the last cyclone, the process water goes from the back to the front, and the starch slurry goes from the front to the back, which forms a countercurrent washing process of material and water to ensure the purity of the finished starch.

The hydrocyclone station is made up of multi-stage cyclones in series. The common ones are twelve, sixteen, and eighteen stages. The more stages, the better the starch purification effect and the higher the quality of the starch obtained. However, in terms of comprehensive operating costs and starch benefits, eighteen stages is the best choice.

The working process of hydrocyclone station

The above is how Henan Jinrui Company explained to you how to slag and purify starch to obtain high-quality starch. Henan Jinrui is a professional starch manufacturer, we provide a complete set of customized starch production lines. If you have the idea of investing in starch production, please leave us a message.