New technologies for the coal power industry

Dry ash handling

Fly ash, collected in the flue gas filters of coal power plants, is produced in huge quantities (many millions of tons annually); it is an industrial waste or by-product of coal burning.

In terms of the chemical, granulometric and phase-mineralogical composition, fly ash and slag are in many respects identical to natural minerals. For this reason they can be widely used in the construction industry to make cement, mixed and cement-free binders, fired (ash gravel, fly ash aggregate) and non-fired fillers, walling materials (silix and aluminous bricks, ceramic tiles and stones, cellular ceramics), road construction, land planning, landscaping, mortars, cellular and dense concrete, stonecast products etc.
Dry fly ash is the most practical, because it retains all its original characteristics. It can be stored in silos in dry conditions and immediately be used in industry without any further preparation.

Weighed against the traditional hydraulic ash removal scheme, the dry ash handling system has the following advantages:

• combustion coal products are used as industrial raw materials (instead of natural mineral materials)
• environmentally friendly by-products are used for building materials
• capacity of existing ash dump is increased (by way of using an ash lagoon as a bed for the new dry ash dump)
• dry ash handling is less damaging for the environment than hydraulic ash removal
• it leads to a reduction of power plant water consumption
• it involves a reduction of ash dusting on the existing ash dump and brings additional revenue from ash and slag sales

We at Red Mountain Energy Corporation are very familiar with dry ash handing systems, their construction and operation, which have been operating in the United States and Europe over twenty years, and we take full account of this valuable experience when designing our own dry ash handling projects. We offer a full range of services to develop dry ash handling systems or existing systems of hydraulic ash reconstruction (hydraulic ash handling system can be operates as reserve system), including pre-design inspection, development of reconstruction designs, selection of equipment for dry ash and slag removal, collection, storage, and delivery, design engineering, equipment procurement, start-up and commissioning.