International name: Su lfur Granular

Synonyms: sercol, sofril, thiovit

Chemical formula: S

Appearance: yellow granules

Manufacturer: Russia

Packaging and storage: bag 25 kg; up to 1 year


Sulfur is a chemical element vital to plants. It is a part of all proteins contained in some amino acids. It is a component of complex fertilizers.
It is well known that many plants, technical and forage crops need care, top dressing at different stages of the growing process. Before planting, during planting and growth, even long before the beginning of any action (for soil preparation), it is necessary to perform a number of actions that will help in the future to harvest a good harvest. Both private farmers and large agrarian enterprises know about this, and each of them approaches the process in his own way, using a variety of means and schemes for their application. Of course, one of the most popular mineral fertilizers is sulfur.


p & gt; Sulfur under normal conditions - brittle crystals of yellow color.
Sulfur is insoluble in water, but it dissolves well in carbon disulphide and benzene. When these liquids evaporate, rhombic sulfur can be obtained, whose crystals are in the form of octahedra with cut corners or ribs.
There is also a monoclinic modification of sulfur with a melting point of + 119.3 ° C and a density of 1.96 g / cm3. It is stable only at temperatures above +96 ° C. At a lower temperature, it turns into rhombic sulfur. Differences in the properties of crystalline modifications are caused by the unequal structure of the crystals.
Sulfur has the properties of typical non-metals. With many metals, sulfur is able to bind directly. Reactions are accompanied by the release of a large amount of heat. Sulfur reacts with all non-metals, but is much more difficult than with metals.


Granulated sulfur is obtained by various methods.
Water granulation (pelletizing) was developed in 1964 by the British firm Elliot. The process is based on the rapid cooling of drops of sulfur falling into the water. The first introduction of technology - the process of "SALPEL" in 1965. The largest plant was later built in Saudi Arabia in 1986. On it, each of the three plants can produce up to 3,500 tons of granular sulfur per day. The lack of technology - the limited quality of sulfur granules, which have an irregular shape and increased fragility.
Granulation in the fluidized bed is developed by the French company Perlomatik. Drops of liquid sulfur are fed upward. They are cooled by water and air and wetted with liquid sulfur, which solidifies on the resulting granules with a thin layer. The final size of the granules is 4-7 mm. More progressive is the Procor process, which is widely implemented in Canada. It uses drum granulators. However, this process is very difficult to manage.
Air-tower granulation was developed and implemented in Finland in 1962. The sulfur melt is dispersed by means of compressed air in the upper part of the granulation tower. Drops fall and harden, getting on a transport tape.


About half of the sulfur produced is used in the production of sulfuric acid.
Sulfur is also used for rubber vulcanization, as a fungicide in agriculture and as a sulfur colloid - a medicine. Also, sulfur in the composition of sulfur-bituminous compositions is used for the production of sulfur asphalt, and as a substitute for Portland cement - for the production of sulfur concrete. Sulfur is used for the production of pyrotechnic compounds, previously used in the production of gunpowder, is used for the production of matches.

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