Wpływ dodatku granulatu z ubocznych produktów spalania odpadów komunalnych na właściwości zawiesin popiołowo-wodnych

As a result of incineration of municipal solid waste, fly ashes as by-products are produced. New methods and directions of reusing of this kind of wastes are constantly looking for. The ashes have been granulated and in this form were added to the ash-water suspensions prepared with ashes from coal combustion in power plant. Two kinds of ashes were use: fly ash without flue gas desulphurization products and fly ash from fluidized bed combustion boiler. Applied recipes prepared in order to meet the requirements of Polish Standard in the field of use it as a solidification backfill or mixture for gob filling in underground coal mining. The main objective of the study was to investigate the effect of the addition of varying amounts of granules obtained from fly ash from incineration of municipal solid waste on the properties of suspensions used for backfill or gob filling. Studies have shown that the addition of granules has a positive effect on the mechanical properties of suspensions prepared from the ash produced without flue gas desulphurization products.