Rotating vibro-granulator for nitrogen fertilizers fusion

Function and area of implementation

Rotating vibro-granulator is applied in the chemical industry and is intended for dispersion fusion of nitrogen fertilizers on uniform drops in the granulation tower with their following cooling and crystallization into solid granules/prills in the process of a free fall in the up-coming stream of cooling air.

General technical characteristics, essence of invention

Rotating vibro-granulator is a system of compactly located main and auxiliary equipment, pipelines. The use of the mono-dispersion process makes a fundamental improvement in the technology of fertilizer production.

General technical characteristics:

  • productivity of granulator by a fusion – 10-100 t / hour;
  • a substance that is granulated – ammonium nitrate, urea, etc.;
  • frequency of rotation of the granulator basket – 35-150 rpm;
  • the diameter of the torch of fusion spraying – 4-15 m.

Comparison with world analogues, main advantages of invention

Improved granulator has the following advantages over other granulator types:

  • high safety in operation;
  • production of more competitive uniform granules;
  • removal of product’s sticking in towers;
  • decrease of dust arising;
  • increase of agro-technical value of fertilizers.

Comparison with world analogs by granulometric composition, %

Intellectual property protection status

More than 30 patents of Ukraine for inventions and utility models were obtained.

Market demand

Modern rotating vibro-granulators for ammonium nitrate and urea are produced in Sumy State University and operate on nitrogen fertilizer plants in Bulgaria, Estonia, Qatar, Cuba, Poland, Republic of Belarus, Russian Federation, Tajikistan, Uzbekistan, Ukraine and other countries.

Status of invention

Invention is implemented at industrial enterprises.