This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ...added to each charge. The refined silver, the result of the operation, is melted in crucibles and cast in bars of 1000 oz. each, 985 fine. Treatment of matte by the Augnstin process.--As indicated in the diagram (See Fig. 108), the matte after a preliminary roasting is smelted to a higher-grade matte in ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ...added to each charge. The refined silver, the result of the operation, is melted in crucibles and cast in bars of 1000 oz. each, 985 fine. Treatment of matte by the Augnstin process.--As indicated in the diagram (See Fig. 108), the matte after a preliminary roasting is smelted to a higher-grade matte in furnace A. It is then crushed, and roasted with salt in the furnace B, and the roasted product leached in the tank C, as already described for ore. The residue from C cannot be rejected, as was the case with the ore, for it contains copper and iron oxides, and must be further treated by the Welsh method as described in the chapter on the metallurgy of copper. It is smelted in furnaces F with silicious ore and copper sulphates, producing a copper matte. The matte, in coarse pieces, is charged into another furnace from the vat E, and slowly melted by an oxidizing flame. The smelting is completed at a high temperature, producing blister copper. This is cast in ingots or pigs, and refined in a furnace to produce market copper. 65. THE ZIERVOGEL PROCESS This process, practised at Mansfeldt, Germany, and at the Boston & Colorado smelting works at Argo, Colorado, is adapted to - Finalsolution Market Coppcr To WASTe Fig. 109. FLOW-SHEET OF ZIERVOGEL PROCESS the treatment of rich copper matte containing little or no arsenic, antimony, or bismuth, any of which would form insoluble compounds with silver. The method may be divided into three parts: the roasting for silver sulphate, the leaching, and the precipitation of the silver. / The process.--Referring to the flow-sheet of the process (See Fig. 109) we have in furnaces A the operation of producing the matte or regulus from gold and silver-bearing copper ores. The details of the process are...
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Add this copy of The Metallurgy of the Common Metals, Gold, Silver, Iron to cart. $22.29, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of The Metallurgy of the Common Metals, Gold, Silver, Iron to cart. $22.29, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of The Metallurgy of the Common Metals, Gold, Silver, Iron to cart. $33.45, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of The Metallurgy of the Common Metals, Gold, Silver, Iron to cart. $33.45, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
