www.steag-powerminerals.com

Management of power plant by-productsIndividual strategies for the power and construction materials industries

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One of our great strengths as a service provider is our excel-lent international network of partners, subsidiaries and affilia-tes in Europe and beyond. Together, we have developed an infrastructure with which we ensure reliable management of by-products and supply of materials for our customers.

The recycling rate for fly ash from hard coal in Germany is almost 100 percent, and the recycling of fly ash and

other power plant by-products is also becoming more and more important internationally. This requires flexible logistics solutions.

Wherever our products are to be used: With our global network and our many years of project experience, we always find a way – by road, ship or rail – in Germany, Europe and worldwide.

Our internationally expanding network

For our customers’ success

Secure utilization Working closely with customers in the power generation and construction industries, STEAG Power Minerals finds the right solution to ensure maximum security of utilization. And that although the quantity of power plant by-products is always a result of the demand for electricity, and not of the demand for materials. In spite of the conflicting pro-duction cycles of the two industries, with maximum pro-duction by the power sector in the winter and maximum material demand by the construction industry in the sum-mer, STEAG Power Minerals provides flexible strategies for the utilization of by-products.

Reliable transportationWe know our way around flexible logistics solutions, as the production locations for power plant by-products, the po-wer plant sites, are selected according to the availability of

fuels and not by the presence of a market for by-products. We have been working together with reputable and reliable partners in the logistics industry for many years now, and are therefore capable of mastering this challenge too.

Quality assuranceThe quality of our products, which are linked to power ge-neration, is not just part of our job, but rather a matter of the greatest importance to us, as our success depends on our customers’ satisfaction. That is why we follow quality standards in the manufacture and selection of our products which place stringent demands on production processes, product characteristics and the corporate organization. In order to meet these requirements we have introduced an internal Quality Management System. Over and above that, the product quality and our quality management are regularly audited by independent institutes. We should be pleased to provide you with the corresponding certificates of compliance and conformity.

STEAG Power Minerals is your independent partner for gypsum from flue gas desulfurization, bot-tom ash, blasting abrasives, industrial minerals and more. For our roots are in the power sector: We are wholly owned by STEAG GmbH, which has been engaged in power generation for around 75 years now. Consequently, we have extensive know-how in the recovery and recycling of power plant by-products such as fly ash, FGD gypsum and bottom ash. We develop individual concepts for the collection of power plant by-products and pursue an all-encompassing approach to pro-duct recycling.

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Reliable management of by-products for our power plant customersWe recover your power plant by-products

As a company with its roots in the power generation in-dustry, we are well aware of the issues confronting the operators of hard coal fired power plants across the glo-be. Electricity production creates large quantities of pow-er plant by-products which require safe and reliable dis-posal. The STEAG Power Minerals Group has decades of experience in the recovery and recycling of power plant by-products such as fly ash, gypsum from flue gas de-sulfurization systems, bottom ash and slag tap granulate. Furthermore, we supply power plants with refuse derived fuels and absorbents. Our experts also provide guidance

on optimization of the utilization channels during the plan-ning of new power plants.The power plant by-products we recover, such as fly ash, are usable in a variety of applications, environmentally friendly, cost-effective and especially valuable for the con-struction industry. For the supposedly worthless residues from hard coal fired power plants have great advantages when used in concrete or cement. The broad range of ap-plications and flexible logistics strategies with a variety of storage opportunities guarantee reliable services for our customers from the power industry.

Benefits for our power plant customers

· Flexible logistics strategies with a variety of storage opportunities

· Continuous research and development work for further applications

· Opening up of new markets

· Close cooperation in a spirit of partnership

· Highly trained staff with many years of experience

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Flexible solutions for ourconstruction materials customersWe supply you with power plant by-products

We ensure smooth and fast logistics for our customers – from transport through transshipment to storage. By ship, truck or rail: STEAG Power Minerals cooperates with over 100 repu-table logistics service providers and can draw on decades of experience in the handling of bulk materials. We have the know-how needed to move our products rapidly and reliably – for efficient logistics chains are the key to success for every project at home and abroad.

We know that our customers always expect to receive their products on time and in the required quality and quantity, and

we therefore do everything to ensure their security of supply.To do so, we work in close cooperation with our power plant customers and devise flexible logistics strategies. Together with a wide range of storage facilities and large silo capacities, we also have transshipment facilities at international ports with buffer warehousing for subsequent distribution.

No matter whether we are to handle the entire design, imple-mentation and supervision of the logistics chain for you, or only part of it, or you wish to collect the goods yourself, we will adapt flexibly to accommodate your wishes.

Benefits for our construction materials customers

· Redundancies (two or more power plant locations per customer)

· Various applications provide room to maneuver

· Opportunity to import fly ash from subsidiaries or affiliates

· Flexible logistics strategies and a broad range of storage facilities

· Substitution products

· Highly trained staff with many years of experience

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Valuable propertiesOur power plant by-products

Fly ash

The strengths of fly ash come fully to the fore in the ma-nufacture of concrete and cement. In concrete, the fine, round particles of fly ash act like small ball bearings, im-proving the workability, water demand and compactability of, for example, shotcrete and high performance concrete. The strength of the concrete is also significantly improved because the particles of fly ash fill cavities in the concrete. In addition, the fly ash strengthens the concrete even after several years by means of its pozzolanic reactivity, i.e. it re-acts with the cement and water in the concrete. This post-set hardening makes the concrete denser, more resistant and more durable – indispensable properties, for example, for bridges, tunnels and foundations.

Bottom ash

steasint bottom ash is an excellent, easy to use construc-tion material. It combines especially favorable material pro-perties with low environmental impact. The applications in which bottom ash is used include the production of concrete goods, landscape gardening, and use as a bulk material in road building.

FGD gypsum

FGD gypsum from STEAG Power Minerals is used to pro-duce a wide variety of environmentally friendly gypsum con-struction materials of the highest quality. Gypsum is a highly useful building material from a physiological point of view, as it has a regulating effect on humidity. In Germany, gypsum is mainly used for interior finishing. Around 75 % of gypsum production is used for plasterboard, or building plasters such as facing plaster or filling compound. But the cement industry also uses gypsum as a curing retardant, and the ceramics in-dustry makes casting molds from gypsum. Smaller quantities of gypsum are also used as a carrier substance for tablets, and for plaster casts.

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Fly ash in wet concrete

Improves … · flowability · workability · pumpability · compactability

Fly ash in hardened concrete

Improves … · post-set hardening · corrosion protection of the reinforcement · resistance to carbonation

Reduces … · propensity to cracking · alkali-silica reaction

Fly ash for cost-effectiveness

Reduces wear on … · truck mixer conveyors · mixers · pumps and pipelines

Reduces … · hydration heat · water demand · bleeding/sedimentation/cavities

Increases … · final strength · resistance to chemical attack · sulfate resistance · density

Fly ash for concrete`s appearance

· Improved exposed concrete surfaces · Even coloring · Clean edges and chamfers · Less blooming

Fly ash for the environment

· Hard coal fly ash is a by-product of power generation · Conservation of natural resources · CO2 savings by replacing binders which are more energy-intensive · Recyclability of the concrete is preserved

Cement with fly ash

· Tried and tested properties, for example pozzolanicity · Significant contribution to reducing CO2 emissions in the manufacture of cement · Fly ash contributes to fulfilling the requirements for durability of the concrete later produced

Why fly ash is so valuable as a construction material...

STEAG Power Minerals GmbHDuisburger Str. 17046535 DinslakenGermanyPhone +49 2064 608-275Fax +49 2064 608-242info-powerminerals@steag.comwww.steag-powerminerals.com

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