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mixture of copper ore, charcoal and iron ore to act as a flux. It was blown for several hours by foot or hand bellows. By the end of the smelt the copper had separated from the slag, which was tapped off. SOURCE Robert Raymond,Out of tfre Fjery Furnace (University Park, PA The Pennsylvania State University Press, 1986)

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Take a look at the procedure to determine the liberation size for a specific ore type. If you want to process more tonnage, or grind finer, we recommend a ball mill right from the start. It will go for months with no maintenance ($1-2/ton cost) and can be adjusted to grind from 50-200 mesh (through-put varies).

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Grinding and concentration together consume about 45 percent of the energy used in the pro-duction of cathode copper. Assuming an ore grade of 0.55 percent and a recovery rate of87.5 6.4 percent copper in the concentrate, concentrat-ing 1 ton of copper ore requires over 200 billion Btu, or approximately 42 million Btu/ton of cath-

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Europe is the leading producer of iron-ore in the world. The countries with large deposits of iron ore are Russia, Ukraine, Sweden and France. Minerals deposits of copper, lead, zinc, manganese and nickel are found in eastern Europe and European Russia. n. orTh. a. Merica. The mineral deposits in …

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Plasma process and device for extraction of precious metals. The main use of smelting is to get the metal from its ore. This includes the extraction of iron from iron ore usually in the form of iron oxides such as hematite or magnetite copper recovery and extraction of other non-ferrous and base metals from their oxides obtained by calcination of their sulfide ores.

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