Prospects of generation of high technologies of recycling of ash-and-slag waste of thermal power stations
The aim of our investigation was definition of the high technology directions of processing and recycling of ash waste and slags of thermal power stations. As a result of research compoundings of preparation are developed and experimental samples of ceramics (including porous ceramics), protectively-decorative coverings, glazes, enamels and engobes, porous ceramics, refractories, facing tiles are received.
Prospects of ash, slag and solid mineral industrial waste utilization
The availability in Russia and especially in the Siberian region of a great number of heat power plants working on hard coal and industrial enterprises producing a lot of mineral waste as a result of their operation raises the question of an urgent need to reduce pollution of the environment. This problem may only become more acute in future and environmental pollution will reach a level when expenditures on environmental protection will be economically efficient. It can be easily seen that the efficiency of measures taken to improve the situation in industry in terms of making production more environmentally friendly is relatively low. As a result amounts of solid mineral waste in industrial areas are steadily growing and this poses a vital difficult-to-solve problem of their recycling. At the same time it is known that solid mineral waste products contain mixtures of potentially useful mineral substances and their separation may serve as a source of practically valuable semi-processed products used in various fields of industry. Therefore it is essential to search for promising economically efficient ways of waste recycling into practically useful high-tech materials for radio, electronic, electrical, building, and other industries.
Composite monolayer fabrication by an arc-spray process
A single layer (monotape) technique for fabricating complex high-temperature tungsten-fiber-reinforced superalloy composites is proposed. The fabrication of sheets of arc-sprayed monotape 38 cm wide and 122 cm long has been demonstrated. Composites fabricated using the method are shown to have equal tensile strength and a cleaner matrix than composites fabricated from powder metal cloth monotapes, and the present technique is less expensive than the powder metal fabrication techniques.