Ways of Improving the Structural Properties of Burnt Rocks of Mine Dumps and Ash-slag Waste

This chapter presents the ways to improving the structural properties of burnt rocks and ash-slags. First, technological recycling schemes of complex enrichment of rock materials with various strength are discussed taking into account different stages of technological process. In particular, the technological operations of crushing of raw materials, sorting of crushing products, and transportation and storage of finished products are considered. Equipment for the crushing and screening complex is discussed in some details. Main characteristics of crushed stone quality are studied at each technological stage. Then the results of characterization of ash-slag mixtures used in road construction are present. The obtained data are based on the practical experience of studying burnt rocks, fly ashes, and slags from dumps of several Russian mines.