The hydrometallurgy of copper . Fig. 13.—Modified hand reverberatory. Longitudinal section. not approach the sintering point. The temperature for chloridizingroasting should be the lowest at which the reactions take place, and thiscondition conflicts with that required for efficient roasting in the middleand rear end of the furnace. To overcome these difficulties, a protecting arch is thrown oversection No. 3, as shown in Figs. 10 and 12, which shields the ore from the. Fig. 14.—Modified hand reverberatory. Plan. direct action of the heat and flame. In this way the ore in the middlesection may
The hydrometallurgy of copper . Fig. 13.—Modified hand reverberatory. Longitudinal section. not approach the sintering point. The temperature for chloridizingroasting should be the lowest at which the reactions take place, and thiscondition conflicts with that required for efficient roasting in the middleand rear end of the furnace. To overcome these difficulties, a protecting arch is thrown oversection No. 3, as shown in Figs. 10 and 12, which shields the ore from the. Fig. 14.—Modified hand reverberatory. Plan. direct action of the heat and flame. In this way the ore in the middlesection may be kept the hottest, and that in the-rear section may readilybe ignited. The flame and heat from the fire-box pass through thespace between the protecting arch and the reverberatory arch, so thatthe ore in the finishing section is heated only indirectly, as in a protecting arch should be as thin as possible, consistent with goodconstruction. COASTING FURNACES 101 In the chloridizing roasting of copper ores, this modified furnace hasbeen used in preference to the ordinary long reverberatory. It canreadily be seen, that for chloridizing work especially, this modification ofthe long reverberatory offers many advantages. The furnace may bestill further modified by returning the flues under the hearth, and thusheat the ore from below. In a long furnace this is a doubtful will depend on the temperature of the furnace gases. Figs. 13, 14, 15,
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Keywords: ., bookcentury1900, bookdecade1910, bookidcu3192400467, bookyear1912
