Our flagship: the Maerz PFR kiln

Our C series is the further development of our classic circular kilns, which are used for production capacities of 300 to 800 tpd: a ring channel ensures that even with large shaft cross-sections, the fuel gases can flow into this ring channel evenly distributed over the circumference of the inner cylinder. This ensures a uniform heat distribution over the kiln cross-section and guarantees a high quality of quicklime.

The kiln's charging system has been further optimised and, thanks to an intelligent distribution system, allows the simultaneous use of several grain sizes in order to optimise the utilisation of the quarry.

In addition, the layout of this new series of kilns is modular, so that the addition of further fuels is possible without any problems and without significant adjustments to the existing installation.

These kilns also form the basis for our Maerz EcoKilns^® A series, in their design as PFR kilns.

The E series is designed for production rates between 100 and 400 tpd. Their geometry, with the direct cross-over channel between the two shafts, requires less steel and refractory material than circular kilns and has been optimised with respect to investment costs.

In these kilns, too, not only can the quality of the quicklime be optimised by means of a special charging process, but - as in the circular kiln - several grain sizes can optionally be used at the same time.

Another expansion option is the installation of an external cooler under the discharge hopper, so that the residual CO₂ content of the quicklime can be reduced and thus the product quality can be increased even further to meet the highest demands.

In the E kiln, it is also possible to burn the lime harder by installing additional side burners under the cross-over channel, thus significantly lowering its reactivity. We call this kiln a "hybrid kiln" - it gives you the flexibility to produce different types of quicklime with just one kiln.