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    Improve Copper Yield in Flotation Tanks Benefits Background Process pH Control Instrumentation Rich copper concentrate is produced from crude copper sulfide ore by means of a flotation process that takes advantage of the physical and chemical properties of small copper ore particles. To maximize the yield of copper, pH control is necessary in .

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    Introduction to Mineral Processing. Froth Flotation Froth flotation is considered to be the most widely used method for ore beneficiation. In ore beneficiation, flotation is a process in which valuable minerals are separated from worthless material or other valuable minerals by inducing them to gather in and on the surface of a froth layer .

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    The copper minerals are then ground up even finer and purified by another flotation process. The dried copper concentrate of about 28 percent copper is shipped to the smelter. It represents less than one percent of the material removed from the mine. Concentrate is just a fine powder of the mineral chalcopyrite which is a naturally occurring .

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    In pyrometallurgy, copper concentrate is dried before being heated in a furnace. Chemical reactions that occur during the heating process cause the concentrate to segregate into two layers of material: a matte layer and a slag layer. The matte layer, on the bottom, contains the copper, while the slag layer, on the top, contains the impurities .

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    The resulting mixture, called a copper concentrate, contains about 25-35% copper along with various sulfides of copper and iron, plus smaller concentrations of gold, silver, and other materials. The remaining materials in the tank are called the gangue or tailings. They are pumped into settling ponds and allowed to dry. The process of .

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    Smelting. The Oxygen Flash Furnace At the Asarco copper smelter in Hayden, Arizona, the oxygen flash furnace is initially heated up with natural gas. It becomes so hot that the copper concentrate immediately ignites when it is blown into the furnace along with oxygen and a silica-bearing flux. The silica flux binds with the iron and other .

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