Summary of campaigns SGM-4 and SGM-5 of the DWPF scale glass melter

The fourth and fifth campaigns of the DWPF Scale Glass Melter were completed 11/2/86 and 12/10/86, respectively. One slurry batch was used for both campaigns. The slurry was a sludge-only simulation with frit-168; it did not include precipitate hydrolysis product. The maximum melt rate attained was 7.9 lb/hr ft/sup 2/, and total glass production was 29,300 lbs. Primary objectives of the campaigns were to evaluate and improve operation of the melter feed system and glass pouring system. This report includes detailed discussions of feed system performance, glass melting and pouring, off-gas treatment, sampling techniques, and instrumentation. Most of the results are applicable to the DWPF, and some have already impacted DWPF design. 8 refs., 66 figs., 30 tabs.