Potensi Uranium dan Thorium di Pasir Zirkon Kalteng: Ancaman Tersembunyi di Balik Eksportir Sukses Kalimantan Tengah (Kalteng) mencatatkan lonjakan besar dalam ekspor pasir zirkon dari 2004 hingga 2008, dengan puncaknya lebih dari 800.000 ton pada 2008. Namun, di balik angka gemilang ini tersembunyi ancaman serius: kandungan uranium (U) dan thorium (Th) yang ikut terbawa dalam setiap ekspor.…
Zircon has economic importance as a raw material in its own right and also as a feedstock for the manufacture of zirconia (zirconium dioxide), zirconium chemicals and zirconium metal. The geological processes that formed zircon led to the incorporation of radionuclides of natural origin into the crystal structure. The presence of these radionuclides is not significant enough to be of any commer…
Forty-two peer-reviewed papers cover the entire spectrum of zirconium metallurgy, from basic metallurgy to accidental conditions and transport, through fabrication, creep and growth, and corrosion and hydriding. Sections cover: • Kroll Award Papers on explosion cladding; zirconium alloys in light water reactors; and much more. • Schemel Award Paper on photoelectrochemical investigation o…