Research into the crushing and grinding processes of iron ore with its simultaneous effect by mechanical load and electric field of ultra-high frequencyPetro Shcherbakov, Svitlana Tymchenko, Olha Buhrym and Dina KlymenkoE3S Web Conf., 123 (2019) 01030DOI: https://doi.org/10.1051/e3sconf/201912301030