15 Sifting Examples

The sifted, screening or cast is a useful separation method to separate two solid substances whose particles are of different sizes. For example: flour sieving, wheat separation, cement sieving.

For that use a sieve, sieve or strainer, that is, a network of some substance resistant whose openings or pores allow the passage of solid matter that has a smaller grain size and retains the largest particles.

It is a simple and widely used method to separate heterogeneous mixtures of solid compounds. Sieves can have various shapes, thicknesses, and porosities.

It can serve you:

Sieving Examples

1. Flour sieving. In the kitchen, the flour to air it, homogenize it, and thus avoid forming lumps once mixed with other substances.
2. Mineral salt separation. To distinguish between salt of mineral origin and frequent residues of rock or other substances, a sieve is used that retains most of the residues and lets the much finer salt pass.
3. Removal of rocks on the ground. If dry soil from the soil is passed through a sieve, it will retain the
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   rocks and residues of another nature, letting the smaller soil particles pass instead.
4. Popcorn salt. Popcorn, popcorn or popcorn usually abound in Salt when we buy them at the movies. A solution to reduce the salt concentration is to shake the paper bag, so that the salt falls through the small holes in the corners and the corn remains. In that case, the paper acts as a sieve.
5. Sifting the rice. A strainer is often used to sift the rice or other grains just taken out of their bag, to separate the grains. valuable from the stones, impurities and broken grains, which, being smaller, pass through the strainer, and leave the wanted.
6. Wheat separation. In the wheat flour production process, it is sifted in various mills to separate it from the bran or bran (the husk of the grain).
7. Sand homogenization. This procedure is carried out in the construction sector, to standardize the size of the sand particles, which can often agglutinate in larger structures. It is passed through a sieve so that all the sand is the same size.
8. Sprinkled in pastry. Cinnamon, chocolate and other frequent companions in pastries are usually sifted through a strainer at the spread them on the surface of the dessert to allow a more homogeneous distribution and to prevent residues bulky.
9. Composting. This method of recycling the organic material It often benefits from simple screening, to extract from the organic mixture reintroduced to the soil those plastic, metallic or hard particles that could contaminate it. Organic matter is so ductile that it passes through the sieve, while rigid and large particle size materials cannot.
10. Salt and pepper shakers. The perforated lid of these devices operates like a sieve, retaining most of the material (salt or pepper) inside the container, as well as possible lumps that have formed (some salt shakers are put in rice to remove moisture inside, even), or simply slowing their flow to the food.

1. Sifting in mining. In obtaining gold and others metals precious, certain types of sieve are usually used to separate the mineral precious from sand or earth, usually pre-moistened.
2. Coffee making. To separate the grain from remains of leaves, sticks or other materials that accompany the coffee berry in its process, a form of sieve is used.
3. Cleaning the cat's litter box. It is done through a small rake-shaped sieve, which lets the sand pass but retains the animal's feces.
4. Cement screening. Since it is such a desiccant material, cement tends to pick up moisture from the environment and form small lumps like stones. It is then that it is sifted before it is used in the elaboration of a construction mixture.
5. Seed separation. In the seed industry, seeds must often be screened to distinguish them from impurities added during processing and from animals that just feed on them.

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