| OCR Text |
Show 21 Roasting Bullion Coa1ition at 9000e. (B.C. #5) Perc;e:nt. Perc.ent. of Total Total Tota Time of Zn Pb S % a;" % roasting 1'10 Zn In total of tro ta.L L, Pb sol. 10% in sat. Sol. .s o H2SO4 % br'ime S % % , H2SO4 sol. Fe, % 12.82 8.69 30.02 12.82 6.2 6.2 16.8 16.2 0.62 8.69 0.91 0.91 hours 16.18 16.52 8.19 11.11 22'.8 8.19 22.1 52.7 5.7.5 1.04 3.54 3.59 4' hours 15.97 16.52 6.90 6.95 2.44 42.6 52.8 5:'5.3 1.40 0.81 0.81 15.58 16.32 6.84 1.59 59.5 52.6 45.0 30.4: 1.04 7.56 1"4.85 15.52 6.90 7.52 2.03 61.1, 51.4 33'.4 33.3 1.00 Raw' crr-e 2 6 hours 8 hour-s: Ccnc Ius f.cne Roasting r 50% extract.ion of about This' ore f ozrna td t.o cn runs' of indicate traetion of high in ferri t,e that the at, the , 5.4 .1 temperature above for bo t.h the iron and The, is an of ra8ting is increased. l.d:eal off ar-e 0.91 0.96 gave: and the low extracticrns ins-olub-Ie: fe.rri t es lead f_al1s zinc 0.53 0.86 one coris.i der-ab'l.y Ie-ad.. ,for t.he eb ta.Lned; formed. as an seem The the ex- length |
