Reciprocating coolers

Coolers in cement plants are key installations:

  • They allow heat recovery from the clinker back into the kiln and preheater – thus fuel saving.
  • They ensure a final clinker temperature that will allow safe and easy handling/storage.

The cooler grates plates should therefore be looked at as strategic elements.

Their working conditions may be put to the test considering the tendency to often push the kilns towards higher outputs than the design ones as well as the possibility of unstable working conditions due to the use of alternative fuels.

In alternative to the current cooler plate design, Magotteaux recommends its own range of alloys and designs of cooler plates to better fit with the specific working conditions of your cooler.

From a design point of view: our patented bar grates and our clinker pocket cooler plates will allow you to experience unprecedented life and performance.

From a metallurgy point of view: our patented Xcc® will enable you to – at least – double the lifetime of the cooler plates.

Name: Cooler grates, side plates.

Industry: Cement.

Equipment: 1st and 2nd generation reciprocating grate coolers.

Principle:

  • Our patented bar grates are recommended for the drop zone and intermediate zone.
    They are made of 3 or 6 pockets which will fill up with clinker.
    The air ventilation will be provided through slots rather than small round holes.
    These slots are located in the vertical walls of the pocket.
    The presence of still clinker in these pockets will ensure a constant opening of the slots through the bar grate life.
    The air channels into the bar grates enable a better cooling of the bar grates than conventional cooler plates. Hence a better resistance against oxidation.
  • Our clinker pocket grates are recommended for the cold zone.
    They are made of one single or double pocket(s) in which a still layer of clinker grains will form and protect the cooler grate bottom surface from wear.
  • Our Xcc® protects the rear portion of the cooler plates against wear minimum 2 times better than any conventional alloys. This ensures a better control of air flow in the gap left between the nose and the rear portion of two cooler plates rows as well as better mechanical resistance.
  • Xcc® can also be used to improve the lifetime of the side plates.

Tech Specs:

  • Drop zone: Magotteaux patented bar grate design.
  • Intermediate zone: Magotteaux patented bar grate design + Xcc®.
  • Cold zone: pocket grate design + Xcc®.
  • Xcc® can also be used for almost all the original OEM designs of cooler grate plates to solve specific wear at the rear of the plates.
  • Xcc® is free from any risk of differential expansion, breakage, spalling, …
  • Xcc® can be used as early as right after the fixed inlet ( or +/- 10th row ) all the way till the cooler exit.
  • Magotteaux favors an alloy selection that will answer specific needs according to the position of the cooler plates inside the cooler rather than standard alloy from row 1 to the end of the cooler.

Key Benefits:

    Bar grate design:

  • Much longer lifetime than conventional cooler plates.
  • Constant slots opening through the bar grate life.
  • Uniform air distribution on the cooler plate width.
  • much better resistance against temperature.
  • Tough design that will improve the mechanical efforts.

    Pocket grates:

  • Much longer lifetime than conventional cooler plates.
  • Holes original openings will be maintained almost like new during a much longer time.

    Xcc®:

  • Will resist minimum 2 times longer against wear than any conventional alloy.

    Side plates with Xcc®:

  • Will ensure a better control on air flow between the side plate in Xcc® and the grate plates along the Xcc® side plate.
  • Will also prevent fast wear and oxidation on the cooler plates installed along the Xcc® side plate.

  • Maintenance man power inside the cooler will be decreased by 2.
  • Cooler outage decreased thus kiln production time .
  • Savings on cooler plates bolts due to lesser changes