Investigation of the technology for extracting vanadium semi-products from Sijjak ore fieldsBakhriddin Vokhidov, Gayrat Mamaraimov, Dilnoza Khurramova, Kalniyaz Dauletov, Mirdodojon Babayev and Umidjon KhujamovE3S Web Conf., 627 (2025) 03007DOI: https://doi.org/10.1051/e3sconf/202562703007