Management of power plant by-products. Individual strategies for the power and construction materials industries.

Transcription

1 Management of power plant by-products Individual strategies for the power and construction materials industries

2 Our internationally expanding network STEAG Power Minerals is your independent partner for gypsum from flue gas desulfurization, bottom 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 product recycling. One of our great strengths as a service provider is our excellent international network of partners, subsidiaries and affiliates 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. 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 production cycles of the two industries, with maximum production by the power sector in the winter and maximum material demand by the construction industry in the summer, STEAG Power Minerals provides flexible strategies for the utilization of by-products. Reliable transportation We know our way around flexible logistics solutions, as the production locations for power plant by-products, the power 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 assurance The quality of our products, which are linked to power generation, 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. 2 3

3 Reliable management of by-products for our power plant customers We recover your power plant by-products As a company with its roots in the power generation industry, we are well aware of the issues confronting the operators of hard coal fired power plants across the globe. Electricity production creates large quantities of power plant by-products which require safe and reliable disposal. 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 desulfurization 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 planning 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 construction 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 applications 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 4 5

4 Flexible solutions for our construction materials customers We 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 reputable 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, implementation 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 6 7

5 Valuable properties Our power plant by-products Fly ash The strengths of fly ash come fully to the fore in the manufacture of concrete and cement. In concrete, the fine, round particles of fly ash act like small ball bearings, improving 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 reacts with the cement and water in the concrete. This postset 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 construction material. It combines especially favorable material properties 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 produce a wide variety of environmentally friendly gypsum construction 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 industry makes casting molds from gypsum. Smaller quantities of gypsum are also used as a carrier substance for tablets, and for plaster casts. 8 9

6 Why fly ash is so valuable as a construction material... Fly ash in wet concrete Improves flowability workability pumpability compactability Reduces hydration heat water demand bleeding/sedimentation/cavities Fly ash for concrete`s appearance Improved exposed concrete surfaces Even coloring Clean edges and chamfers Less blooming Fly ash in hardened concrete Improves post-set hardening corrosion protection of the reinforcement resistance to carbonation Reduces propensity to cracking alkali-silica reaction Increases final strength resistance to chemical attack sulfate resistance density Fly ash for the environment Hard coal fly ash is a by-product of power generation Conservation of natural resources CO 2 savings by replacing binders which are more energy-intensive Recyclability of the concrete is preserved Fly ash for cost-effectiveness Reduces wear on truck mixer conveyors mixers pumps and pipelines Cement with fly ash Tried and tested properties, for example pozzolanicity Significant contribution to reducing CO 2 emissions in the manufacture of cement Fly ash contributes to fulfilling the requirements for durability of the concrete later produced 10 11

7 STEAG Power Minerals GmbH Duisburger Str Dinslaken Germany Phone Fax SPM-M/K, 04/2013