Upcycling firing – bricks for an optimum eco balance

Using the new raw material-neutral and resource-efficient upcycling firing process, Hagemeister responds to the growing requirements in the construction industry and makes an important environmental contribution, according to a statement of the company.

The particular feature of the so-called upcycling firing is the consequent and exclusive use of raw materials which were separated in previous production processes. In this way, for example, unfired raw material is used that is produced in the manufacturing and conveying systems when changing between two grades. In addition, ceramic raw material is used that can be extracted from the filter of the in-house water treatment. Even fired brick waste is finely ground and used as component in the upcycling firing process. As a result of this measure, it consists of 100 % secondary material. No raw material freshly delivered from the clay quarry is required.


Recipe is determined by the secondary material

Hagemeister breaks new ground with this procedure: So far, a clinker grade was produced strictly according to the recipe. Now the exact opposite procedure is used for upcycling firing. The recipe is essentially determined by the secondary material available – the firing result is unique and depends on the composition of the recycled material. „However, the visual appearance of firing is not at all left to chance,“ explains product manager Johannes Beusker. „Together with architects, investors and building contractors, we can coordinate relevant parameters such as shape, surface structure and method of firing in advance. In this way, also upcycling firing can respond to the design requests of the construction partners.“

Prior to the upcycling firing process, a sample of the resource-conserving raw material available is analysed in the internal laboratory and fired for testing purposes. This procedure guarantees the Hagemeister quality in this particular production process too – so that the products manufactured in this way fulfil all technical requirements on the high-quality clinkers. Moreover, the result of the test firing is a good indication for the later clay colour on the basis of which the final look of the product is designed in coordination with the customer.

The offer of upcycling firing is addressed to architects who think sustainably as well as building contractors who are planning a larger project and are possibly interested in having the building certified under aspects of sustainability.


Related articles:

Issue 2016-8

Carry-over of raw material reactions in the preheating zone for energy utilization of carbon-containing body constituents

For firing high-thermal-insulation clay blocks, the raw materials must meet certain preconditions and the firing process fulfil certain requirements. These are necessary to make more efficient use of...


Hagemeister presents variety of bricks

Whether Nordic rustic, extremely slender or vibrantly mixed – the new Hagemeister bricks attest to true individuality and combine traditional craftsmanship with advanced production technology....

Issue 2019-2 Beralmar

New solid fuel firing facility for Cerámica Belianes

The Spanish firing specialist Beralmar has supplied a new solid fuel firing facility, a Micromatic system, to Cerámica Belianes in Lleida (Spain). The system uses petcoke with optimum properties,...

Issue 2016-8

Influence of the atmosphere on the tunnel kiln process

In the making of clay bricks, the firing process is particularly important. It crucially influences the product quality as well as the costs of the overall process. To ensure a uniform transfer of...

Issue 2015-7

Resource efficiency in brick and tile industry – background and practical examples

Approval procedures for the extraction of new raw materials are becoming increasingly difficult. Today, the European nature protection directive Natura 2000 has led to a complex network of...