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- W76201382 abstract "About 95% of the beryllium was dissolved from most ore samples by agitation leaching with 600 lb of H/sub 2/SO/sub 4/ per ton of ore for 24 hours at 65 deg C and 35% solids. Leach slurries generally were viscous, and the limiting pulp denslty for thorough mixing was about 35% solids. Settling of the leached pulp required 0.6 to 0.8 lb of a polyacrylic flocculant per ton of ore leached with 800 lb of H/sub 2/SO/sub 4/per ton, whereas ore leached with 800 lb of H/sub 2/SO/sub 4/ per ton required only 0.2 to 0.3 lb of flocculant per ton. Terminal densities of the settled pulps were about 28 and 35% solids, respectively, from leaches using 500 and 800 lb of H/sub 2/SO/sub 4/ per ton. Vacuum filtration of settied pulps at 15 in. Hg resulted in a filter cake containing 50 to 59% solids. Roasting the ore at 500 deg C before leaching increased the limiting pulp density for effective mixing to 50% solids. Acid requirements, however, were not diminished, although leaching roasted ore with 600 lb of H/sub 2/SO/sub 4/ per ton resulted in densification of settled pulps to about 40% solids. Filter cake from leaching preroastedmore » ore contained about 20% less water than that from unroasted ore. (auth)« less" @default.
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- W76201382 date "1963-03-01" @default.
- W76201382 modified "2023-09-27" @default.
- W76201382 title "ACID LEACHING OF BERYLLIUM ORE FROM SPOR MOUNTAIN, UTAH" @default.
- W76201382 hasPublicationYear "1963" @default.
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