Technological Complex for Utilization of High-Calcium Ash and Slag for Abakan Thermal Power Plant

Abstract

The Siberian State Academy for Mining and Metallurgy (SSAMM) and Uglestrinproject have developed a project for complex utilization of waste produced by burning brown coals from Kansk-Achinsk Power Complex at the Abakan thermal power plant. The project provides for total utilization of ashes and slags from the thermal power plant for producing finished 'cementless' binder and aggregate, finished 'cementless' fine ash/slag concrete and mortar, precast reinforced concrete structures and small products (silicate brick). Previous investigation of ash and slag from the thermal power plant and concretes on their base was completed in 1995. After grinding and introducing silica fume, ash and slag to meet the requirements of State Standard 25818-91, concrete is in accordance with State Standard 26633-91. The technological complex providing 100% utilization of waste products from the TPP includes departments for grinding ash with a storage, for producing sand from slag with a storage, molding with concrete mixers and premises for admixtures. The project has been approved by a nature committee of the Khakass Republic and is in accordance with the ecological standards. The construction of the complex is currently under way.