51400, Dnipropetrovsk region,
building 1/11, Iskrovska Street, Pavlograd
Representative in Bavaria, Germany
+4915156498364 - Yuriy Fesenko
+38 067 6970 700
+38 095 8730 849
+38 067 1081 578

Repair of granulators.
The process of granulation and possible malfunctions in the operation of the equipment

Do you want to improve the operation of the equipment and increase the production of compound feed in granules? Do you need a granulator repair? Contact Dnepropetrovsk Foundry and Machine-Building Plant LLC, and qualified specialists will help you get your equipment back into operation.

Granulators are used for processing loose feed mass into granules by pressing. Granulated mixed feeds retain their useful properties, are perfectly absorbed by animals and are stored better than loose ones.


The granulation process and possible malfunctions of the equipment

Granulation involves the compression of bulk raw materials in the space between the roller and the surface of the matrix. Under the influence of moisture, heat and pressure, the food acquires thermoplastic properties and is squeezed out through the holes, taking the form of granules.

During the production of mixed fodder, the resources of the matrix and the shell of the pressing roller are exhausted. Because of this, failures begin to occur in the operation of the device, and the quality of the resulting products deteriorates.

Possible problems:

  • matrix damage;
  • uneven wear of its surface;
  • drilling holes;
  • roller wear;
  • reaming countersink.

In such a situation, it is necessary to repair the granulators or replace parts.


This can be done in the machine-assembly shop of the «Dnepropetrovsk Foundry and Machine-Building Plant», which is equipped with modern equipment. With its help, qualified employees of the enterprise will carry out the necessary types of work and metalworking of various types. The workshop carries out the repair of granulators, as well as the renewal and modernization of machines, mechanisms and systems.

Repair of granulator matrices

Matrices, through the holes of which the granules pass, are of two types:

  1. Flat. The matrix in this case is the bottom of the chamber, inside which the axis with the press rollers is placed. Either the rollers or the matrix itself can rotate around the axis.
  2. Cylindrical (OGM, DG and other types). The press chamber contains a ring die rotating at high speed, and inside it there are press rollers.

The hole diameter is 2-19 mm, and the matrices themselves can be either small (with a power of 15 kW) or large (with a power of up to 600 kW). The quality of the steel from which the matrix is ​​made, the length of the working channel and how well the holes are ground are also of great importance.

The repair of granulator matrices includes the following works:

  • cleaning holes from the product;
  • grinding the surface of the matrix;
  • countersinking holes;
  • deepening of relief grooves (if necessary);
  • sewing the collars (if necessary).

Restoration of the pressing roller or shell:

  • grinding the shell;
  • perforation;
  • collection and preservation of the video.

LLC «Dnepropetrovsk Foundry and Machine-Building Plant» will help you solve the problem of die wear and establish stable operation of the granulator. As a result, you will reduce the number of production line stops and be able to produce high-quality granular feed. Contact our specialists, carry out repairs of granulators and save money on the purchase of new parts.


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