In late 2022, factories in China's well-known potato cultivation region stood ready to be equipped with a Grisnich receiving, cleaning, and sorting line. This project's delivery scope comprises as many as 37 sea containers shipped from the Netherlands to China. The plant will eventually process potatoes into specialties and French fries, Tolsma Grisnich reports.
"The Grisnich line can receive about 80 tons of potatoes per hour. They're brought from storage by belt trailers. The product goes up the chute to a sampling machine that automatically takes samples, collecting them in small crates. The rest of the potatoes pass through magnets to remove any steel particulates.
They then go to the de-soiling unit, which consists of an axial cleaner, a spiral roller degrinder, and a hedgehog belt with waste conveyor belts. How hard it cleans depends on the product. The waste is transported to a waste bunker outside the building.
After having its soil removed, the potatoes are either sorted or transported to 100-ton capacity containers. Or they go directly to the cleaning line. Two roller graders sort the potatoes into four sizes. After that, they make their way over two length sorters, and the sorted sizes go directly into the bunkers. Each different potato size is transported to its own bunker. The undersized ones go into a separate crate.
The bunker system is made up of eight ventilated containers, which can each hold 50 tons. They are filled with bunker-filling belts and are equipped with fall breakers. From there, the potatoes are transported to a cleaning line. It has a stone/clod separator, drum washer, and salt bath. The line has a capacity of about 50 tons per hour. After cleaning, the potatoes go straight to the even flow bunker before being sent to the processing line."