Question

what matter used to extract cu

Answer 1

Extraction of Copper. The chief and important ore of copper from which the metal is most isolated is copper pyrites (CuFeS2). Froth floatationprocess is used for concentrating the ore. The powdered ore is suspended in water and after adding little pine oil is stirred by means of air.
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Answer 2

Extracting copper from its ores. The method used to extract copper from its ores depends on the nature of the ore. ... The ores typically contain low percentages of copper and have to be concentrated before refining (e.g., via froth flotation). Figure 1: Chalcopyrite extracted from Zacatecas, Mexico