Infrared spectroscopy as the method for evaluating technological properties of minerals and their behavior in technological processesIhor Kholoshyn, Natalia Panteleeva, Oleksandr Trunin, Liudmyla Burman and Olga KalinichenkoE3S Web Conf., 166 (2020) 02002DOI: https://doi.org/10.1051/e3sconf/202016602002