Baseline milestone HWVP-87-V110202F: Preliminary evaluation of noble metal behavior in the Hanford waste vitrification plant reference glass HW-39

Abstract

Reprint of hbtwical &xumeN HWVP-87-VllOU)2F PRMC -ZloaoD1s). dated Sepumkr 1987. Dam. fWmaning. and 0th eonventions reflect rtandardr I thc original dale of priaing. Technical peer reviews and editorial miewr may mt have b x n p e r f d .

Noble metals-compatible melter features development Phase 1: Establishing functional and design criteria and design concepts

“…The probability of such an occurrence is also supported by recent laboratory work at the Paci7ic Northwest Laboratory (PNL) , where noble metals precipitates occurred from the melti.ng of simulated feed containing high levels of noble metals (Geldart, Bates, and Jette 1987).…”

Noble Metals and Spinel Settling in High Level Waste Glass Melters

“…Various metal oxides and reducing agents were evaluated. In general, 70 percent to 100 percent of the palladium, 70 percent to 100 percent of the rhodium, and 30 percent to 70 percent of the ruthenium could be recovered After it became known that the noble metals had the potential to form a sludge that would interfere with melter operation, laboratory tests were initiated tests to obtain a preliminary characterization of noble metals in simulated HWVP glass (Geldart et al 1987). These tests included crucible melts and a continuous liquid-fed minimelter (LFMM) run, all using the reference HW-39 waste and frit.…”

Hanford high-level waste melter system evaluation data packages

“…Furnace temperature for the SRL borosilicate glass was l150 0 C (2l00 0 F) and for P-19 alumino-silicate, l290 0 C (2350 0 United States Patent (19) This is an appendix to the data package for the high-temperature, joule-heated, ceramic-I ined . melter (HTCM) contains information gathered about the Russian melter design for vitrification of HLW.…”