What is a sand sieve?

A sandblasted person.

A sand sieve is a tool for sifting sand or other particles in order to separate the particles according to size. It is usually a simple metal or plastic screen, with apertures of a certain size, designed to allow particles of a certain size or smaller to pass through, while capturing any larger particles. These sieves can be small hand tools used by gardeners or scientists or large industrial devices used in the production of quarry products such as sand and gravel.

Sand.

An analytical technique called sand sieve analysis is often used to determine the relative composition of sand or composite sediment according to particle size. Sand sieves of gradually decreasing size from top to bottom are arranged in a column, sometimes held together by a frame or other apparatus. The sediment sample is weighed and placed on the upper sieve, and this sieve is shaken for a certain period of time. As the sediment passes through the sieves, each is shaken for the same amount of time. The individual sizes of the sediment particles are then weighed, allowing classification of the sample.

Bonsai enthusiasts often use a sand sieve.

Gardeners and hobbyists sometimes use a sand sieve to separate sand and other soil particles. Bonsai enthusiasts often employ them for this purpose, to allow them to more accurately formulate the specialized soil mixes used for growing dwarf trees. Archaeologists and paleontologists sometimes employ sand sieves to sift sand or other sediment in search of very small artifacts or pieces of bones and teeth.

Industrial sand screens can be very large, capable of handling many thousands of tons of sand per day, and are often fed by conveyor belts.

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In industry, sand screens are often used to produce sand with a particular particle size uniformity for things like children’s play areas, pool filters, sandblasting applications, concrete and mortar mixes. Industrial sand screens can be very large, capable of handling many thousands of tons of sand per day, and are often fed by conveyor belts. By changing the number of sieves or mesh sizes of a series of sand sieves, almost any combination of particle sizes can be produced.

Sand screens are sold in standard sizes and are designated by a number that generally refers to the number of holes per inch. Taking into account the standard diameter of the wire used to make a sand sieve, the maximum particle size can be calculated from the mesh number of the sieve. To calculate this number in inches, divide 0.6 by the sieve number. To calculate this number in millimeters, divide 15 by the sieve number.

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