Mixing and dosing of additives for potato flakes
Additives mixing and dosing
The Additiveline is a system used in the potato industry for mixing and dosing additives in the potato flakes production line.
Since both french fries as flakes processing lines are becoming bigger and bigger, the demand of automated systems increases.
Potatoes are cooked and mashed, then crushed by rollers on the surface of a drum. The mashed potato is fast-dried until its humidity reaches the desired level, then the layer of dried, mashed potato is scraped from the drum. This sheet is broken up by a mill sifter, and the resulting flakes are then packed.
To give the flakes the desired characteristics in terms of flavour, colour end other specifications, additives are dosed in the mashed potatoes. This includes product characteristics such as taste, a crispy ‘bite’ or a longer shelf life.
How an Additiveline works
The first part of the Additiveline is the powder handling part. The dry additives can be brought to the line in big bags by a big bag unloading station or in smaller bags through a powder filling cabinet. Of course, a combination of both is also possible.
From that point, the powder can be transported to the tanks by vacuum, screw conveyor or directly dosed in the tanks. Working with vacuum transport allows you to keep the dry part of the line separated from the wet parts.
In the second part of the Additiveline, the additives are mixed with water. A volumetric feeder doses the correct amount of additives in the water.
The solids percentage of additives and the characteristics of it, will determine the agitator needed. This can be a simple propeller agitator, a disperser, a high shear mixer or even an inline mixer.
Several setups can be used, a single tank setup, where all additives are dosed into the same tank or a multiple tank setup, where certain additives will have a dedicated mixing tank. The big advantage of the second option is, that the additives can be dosed separately into the potato mash, which increase the flexibility of the system and the quality of the end product.
Once the additives are mixed with water, it will be dosed in either the ricer or the cooker. In the ricer only liquid additives can be dosed into the ricer, where in the cooker it’s also possible to add dry additives.
Throughout the year, the potatoes used for making flakes will vary in quality and characteristics. By having the ability to change the dosing percentages, a nice and even quality can be produced whole year round.