. Transactions. e wooden bottom. A circular felt pad, 6, tackeddown between the three springs, protects the bottle against jar-ring. The barrel makes rev. per minute. 10 Ore Dressing, by K. H. Richards, vol. ii., p. 1157. CHLORIN \ l I«\ AND BROMIN \ I ION 1 GOLD. 9 •! The Solves i 3. In order to obtain a satisfactory extraction of gold by chlor-ination or bromination, it la essentia] to have an 1 of re- ent over that taken up by the ore. In working on ;i laide, it has been found11 that the consumption of chemicals perton of ore is the larger, the Bmaller the charge. Bringing thisdown to a
. Transactions. e wooden bottom. A circular felt pad, 6, tackeddown between the three springs, protects the bottle against jar-ring. The barrel makes rev. per minute. 10 Ore Dressing, by K. H. Richards, vol. ii., p. 1157. CHLORIN \ l I«\ AND BROMIN \ I ION 1 GOLD. 9 •! The Solves i 3. In order to obtain a satisfactory extraction of gold by chlor-ination or bromination, it la essentia] to have an 1 of re- ent over that taken up by the ore. In working on ;i laide, it has been found11 that the consumption of chemicals perton of ore is the larger, the Bmaller the charge. Bringing thisdown to a laboratory-scale, the proportions necessary will bemuch greater than tin>><- found in practice. Considering fur-ther the manner of preparing the finely-divided lt< »1«1 or ir1<1-silver, which was coarser than that found in ores subjected toleaching, the exc< bs of solvent in the present case has to belarger than that required by a natural ore in a laboratory-test. Pig. 1. Fio. END ELEVATION. SIDE ELEVATION AND PART SECTION. a, wire springs for holding the bott b, place for protective felt pad. Richards Revolving Amalgamator. Iii comparing chlorine and bromine as solvents, it will benecessary to have equivalent quantities. Guided by experiencesin regular laboratory practice,12 the quantities of bromine set-tled upon, using 150 of water and 5 A. T. of ore, were ,, , , , and According to Roozeboom,13a saturated solution of bromine in water contains at 0° I . per cent, of bromine; at 3°, per cent; and at 10°, cent. The solubility decreases slowly with the temperature. 11 Godshall, Engineering and Mining Journal. Jan. 6, 1894, p. Notes on Assaying, by R. W. Lodge. Wiley £ Sons, New York, p. 248 (1904).13 Dictionary of Chemical Solubilities, by Comey. Macmillan & Co., London(1896), p. 62. 952 CHLORINATION AND BROMINATION OF GOLD. Dancer gives for L5° C, per cent, of bromine, and for30°,
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
