Definition - What does Horizontal Sieving mean?
Horizontal sieving, as its name suggests, is a sieving method that utilizes purely horizontal mechanical movements. Like other sieving methods, the particles or objects are placed on a sieve and are separated by allowing them to fall through various mesh sizes. During horizontal sieving, the sieves move in a circular motion in a single flat plane. Like other sieving methods, horizontal sieving is used to separate or measure particles by their size.
Corrosionpedia explains Horizontal Sieving
Because the particles in the sample are not tossed in the air due to the planar horizontal motion, they are unlikely to change orientation during shaking. This attribute makes horizontal sieving ideal for long, flat, fibrous or needle-shaped particles, which can erroneously slip through sieve meshing if they are tossed in the air.
This type of sieving is used extensively in the food and beverage, pharmaceutical, and construction industries, to name a few. For example, some food and medical items have a length dimension limit to be deemed safe for human consumption and are, therefore, subjected to horizontal sieving.