SEDITEC products are based on input material from coastal areas, estuaries and river beds. The latter convey suspended organic and inorganic material from their source to the estuary, where the slower flow causes it to settle or form sediment, which needs removing by dredgers.

The crystalline freight contains a cross-section of minerals from the geological landscape through which it has travelled. This cross-section includes feldspar and quartz sand, for example, and also “heavy minerals” and even some raw materials characterised as “rare earth elements”. Crushed and ground by nature, the result is a wealth of natural materials, which determine SEDITEC’s product range.
The SEDITEC product range includes both primary and intermediate products - which we supply to processing industries - and ready-to-use end products. For all its product lines, SEDITEC can react flexibly to customer requirements. Production is customised to the highest level of refinement.
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»Primary products»Intermediate products»End products»End product contaminant
Rare earth elements. Precious raw materials and innovation drivers in numerous industries.

Mineral fraction 0 – 120 μm. Monazite sand
Raw material for the extraction of rare earth metals. (The metals lanthanum, cerium, neodymium and samarium are designated as rare earth metals.) Customised sedimentation

Mineral fraction 0 – 120 μm. Zircon sand
Steel processing industries. (Zirconium is a highly corrosion-resistant heavy metal.) Customised sedimentation

High-quality minerals (zirconium, monazite)
For special applications. For technical ceramics, photovoltaics, research and development, among others.
Close intermediate products
Development of the range of end products is flexible. The end product options are determined by the characteristics of the source material. End products based on typical source material, consisting of fractions of sand, silt and clay.
Sand clay slabs
Dyke construction. The development of this increasingly scarce resource makes a lasting contribution to coastal management.
Industrial slabs
A diverse range of possible uses. For the production of concrete blocks and slabs.
Close end products
Ultimately, the proportion of materials requiring disposal is minimal, in tune with the ideals of proactive resource and raw material management. In contrast to current methods, SEDITEC’s treatment quota is 95%. The remaining 5% is deemed contaminated, but can still be utilised as raw material.

Contaminant
The Baltic Sea, for example. An array of concentrated heavy metals: As, Cd, Cr, Cu, Hg, Ni, Pb, Zn. and non-usable materials vary with the characteristics
of the source material.
Close end product contaminant