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A TEC Group

Name: A TEC Group
Address: Finkensteiner Straße 9, Gödersdorf, 9585, AT
Telephone: +43 4257 3600

A TEC - A Member of LOESCHE Family When it comes to outstanding technological performance, you need experts who think ahead.

Innovators who always go a step further. Significant efficiency improvements, sustainable cuts in energy consumption, compliance with or even overachievement of environmental limits - our solutions give a competitive edge to our customers. Impressum:
http://www.atec-ltd.com/meta/impressum.html

11/06/2026

Modernizing a cement plant means working within a structure that has its own history, physical layout, and daily operational routine. The most important aspect of a brownfield upgrade is treating the existing configuration as an active blueprint.

When a plant adopts advanced systems to handle alternative fuels, the engineering task becomes an exercise in structural adaptation. Designers must determine how new process equipment, bypass systems, or fuel preparation units can be integrated into a preheater tower built decades ago without provisions for these additions. It is a three-dimensional puzzle, where process requirements, structural constraints, maintenance access, and available space must all fit within the existing facility.

The environment, therefore, requires an independent, analytical assessment before any equipment is selected. Detailed on-site audits and process simulations identify where new technology can be integrated into the existing process. This initial consulting stage reveals the potential of the current layout, allowing future improvements to be implemented where they deliver the greatest operational benefit.

04/06/2026

For decades, progress in cement production has been closely tied to new equipment, fuels, and processes. However, some of the most interesting opportunities are found by viewing the plant from a new perspective.

When a dust stream no longer leaves the process but becomes a source of information about internal cycles and process behaviour, or when waste heat, under the right conditions, can support additional process steps, fluctuations in temperature or pressure become clear data points that reveal how the system responds to changing conditions.

As plants work with more diverse fuels and more complex material streams, the work lies in understanding the interactions that already exist inside the process and identifying where technology creates the greatest benefit within the existing plant footprint.

Working from the inside out, sustainability becomes as much a matter of process interpretation as process modification. Materials that were once discarded re-enter the production cycle, allowing energy to serve more purposes before leaving the system. A targeted upgrade, integrated at the right location and for the right purpose, stabilizes operation within the existing plant footprint.

27/05/2026

Modernizing a cement plant means working within a structure that has its own history, physical layout, and daily operational rhythm. The most important aspect of a brownfield upgrade is respecting the existing configuration.

When a plant introduces advanced systems to handle alternative fuels, the engineering task becomes deeply rooted in the work of the on-site team. Designers must figure out how to integrate massive new components, such as high-efficiency bypass ducts or processing units, into a preheater tower that was built decades ago with no provisions for such additions. It is a three-dimensional puzzle where any missteps are reflected in costly downtime.

Thus, this environment requires an independent, analytical view before any equipment is chosen.

Detailed on-site audits and process simulations identify the intersection points where new technology can join the established path. This early consulting stage uncovers the hidden capacity of the existing layout, allowing for maximum future operational flexibility and minimum structural modifications. A plant can transition to its new capabilities with ease when teams install the equipment during a brief, scheduled shutdown, maintaining production right up to the shutdown window.

Our Consulting & Engineering solutions. ⟶ https://www.atec-ltd.com/en/consulting/consulting-service.html

19/05/2026

Inside a cement kiln, chlorine evaporates largely in the kiln before moving with the gas stream toward the calciner and preheater, where it condenses on the raw meal. Over time, chlorine concentrates in the hot meal and kiln inlet zone.

At Vicat’s Peille plant in France, A TEC installed a chlorine bypass system that extracts kiln gas directly from the riser. The gas cools rapidly enough that chlorine compounds condense onto dust particles before returning into circulation. The system was designed to fit within the layout of a kiln line built in the 1970s. Laser scans guided the placement of the ducts, cooling equipment, and transport routes inside the existing structure.

Read the full article here ⟶https://atec-ltd.com/images/Articles/REPRINT_2026-05_HR_ATEC_Chlorine_bypass_3p_MB_RH48.pdf

13/05/2026

The nature of plant modernization is revealed under the pressure of annual shutdown planning. The most lasting performance gains come from interventions chosen at the right moment and in the right sequence as part of a long-term strategy.

A cement plant matures through accumulation. One year, the bypass is adapted to improve chlorine control and support alternative fuel use. The following year, the tertiary air system is modified to stabilize combustion under changing thermal conditions. Later, the cyclone geometry, duct routing, kiln inlet design, and meal distribution are adjusted to reduce pressure losses, improve separation efficiency, and optimize pyroprocess performance.

Modernizing the plant then becomes a matter of identifying the most pressing bottleneck at each stage of production and deciding which intervention will deliver the greatest improvement to the processes of heat transfer, gas flow, residence time, dust circulation, and combustion stability. When this decision is well-informed, a maintenance stop becomes a tactical opportunity to implement modifications based on process analysis, operating data, and simulation, aligning investment with production realities and implementation windows.

This layered procedure increases efficiency by progressing through clear stages: planned outages, careful budgeting, and upgrades that build on each other. Thus, modernization is a long-term engineering effort in which timing, order, and understanding the system are as important as the equipment itself.

08/05/2026

ReduDust: Turning bypass dust into a reusable process stream.

The high chlorine content of alternative fuels puts increasing pressure on the pyroprocess, particularly at the kiln inlet and lower preheater. The A TEC ReduDust system uses leaching, filtration, and crystallization to separate salts from bypass dust. This process cleans the mineral fraction, returning it to cement production, while producing a potassium-rich salt fraction. This article features the ReduDust installation at Ssangyong Cement’s Donghae plant in South Korea, as well as its integration with the plant's waste heat recovery system.

Read the full article here: https://bit.ly/4dbRBEl

Article by Dr. Stefan Kern, Managing Director A TEC. Published in Global Cement Magazine.

06/05/2026

The Metamorphosis of Mud.

Clay exists in a state of inert potential until it reaches a moderate thermal threshold. Before melting begins, kaolinitic clays undergo a molecular awakening and develop the chemical reactivity required to serve as supplementary cementitious materials (SCMs). Unlike limestone, which releases CO₂ during decomposition, this clay transformation avoids material-related carbon emissions.

Calcined clay emerges as a primary agent in the transition to clinker-lite cement. Within the LOESCHE Group, A TEC and Dynamis combine pyroprocessing and grinding expertise to create process chains that handle this material with precision. Flash calciners are used for projects requiring the rapid activation of pre-processed clays, while the refurbishment of rotary kilns extends the lifecycle of existing infrastructure and manages diverse raw material compositions.

The process also controls the atmosphere during combustion and cooling to prevent iron-induced reddening of the clay. Selective and finish grinding refine particle size and optimize SCM performance. In LC3 systems, calcined clay, limestone, and gypsum work together to substitute clinker while preserving the strength essential to cement.

29/04/2026

Alternative fuels connect two very different material realities. Waste streams arrive as mixtures that vary in structure, moisture content, and mechanical response. In contrast, the kiln requires a feed that moves, disperses, and reacts within tight and repeatable limits.

Through impact and turbulence from horizontally rotating chains, the Rocket Mill converts this variability into defined material properties. Composite structures break apart, fibrous fractions separate, and mechanical friction reduces moisture, leading the material to reach a state where bulk density, particle distribution, and flow behavior follow consistent patterns during conveying and dosing.

This conversion step is what makes high substitution possible. When material properties match the process requirements before reaching the flame, the burner and calciner receive a fuel that behaves in a controlled, predictable way. The system then operates with consistent conditions, even at higher substitution rates.

22/04/2026

Over the past three decades, the rotary kiln was the center of the operation in the traditional cement pyroprocess, but modern engineering has distributed process stabilization across the system, with key control functions now taking place high in the preheater tower.

Originally, the upstream equipment had a clear task: preheat, separate, and pass material forward under relatively stable conditions. Today, the preheater tower acts as a conditioning zone that manages the complexity of alternative fuels and strict emission limits before material even enters the kiln.

Modern line hierarchy moves the preheater and calciner from transfer points to where gas velocity is set, where material is repeatedly separated and reintroduced, and where residence time is adjusted in small increments. Each cyclone and duct section contributes to how consistently the next stage is fed.

With variability being handled in steps, it is redistributed along the path through controlled circulation and staging. Optimization over the past decades relies on many smaller adjustments, no longer concentrated at a single point, and applied continuously before the final reaction takes place.

17/04/2026

In cement production, "looking up" is exactly where the industry is headed.

They say that a change in perspective can change everything. In pyroprocessing, achieving peak efficiency requires both advanced technology and a feet-on-the-ground understanding of plant operations. With kiln burning zone temperatures exceeding 1400°C, managing thermal energy is a vertical climb. In unoptimized systems, up to 30–40% of thermal energy is lost through exhausts and clinker cooler stacks. We work to keep that energy where it belongs: inside the process.

Our focus is on the heart of the tower: the calciner. Advanced calciner designs are the engines of optimization. We configure systems for each plant's specific gas volumes and temperature profiles to maximize heat utilization. A TEC’s high-efficiency cyclones and calciner upgrades deliver measurable performance improvements, reducing pressure drops and improving thermal efficiency for higher-performing plants.

Adresse

Finkensteiner Straße 9
Gödersdorf
9585

Öffnungszeiten

Montag	08:00 - 18:00
Dienstag	10:00 - 18:00
Mittwoch	10:00 - 18:00
Donnerstag	10:00 - 18:00
Freitag	10:00 - 18:00

Telefon

+43 4257 3600

Webseite

http://www.atec-ltd.com/

Benachrichtigungen

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