High performance ceramic stones on the basis of by-products of waste heaps - screenings and coal slurryKhungianos Yavruyan, Vladimir Kotlyar, Evgeniy Gaishun, Anastasia Okhotnaya, Elizaveta Lotoshnikova and Kristina ChanturiyaE3S Web Conf., 135 (2019) 03017DOI: https://doi.org/10.1051/e3sconf/201913503017