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Chapter 6 Copper Production Technology

Chapter 6 Copper Production TechnologyCONTENTSPageHistory ..103 Exploration ..113 Mining ..116 Comminution and Separation ..127 Beneficiation..; ..130 Pyrometallurgy..$ ..133 Hydrometallurgy ..140 Electrometallurgy..142 Melting and Casting.. Lakeshore Mine in Situ Project ..1266-B. Smelting Furnaces .. Sheets for CopperProduction ..136 Page..104 Early Smelting Technology ..107 Early Copper -Producing AreasofEurope and the Middle East ..108 Copper Deposits of NorthernMichigan ..109 Copper Production Areas of theNorthern and Central RockyMountains.

discovered that heat made copper more malle-able. Casting and smelting of copper began around 4000-3500 B.C. (see figure 6-2). About 2500 B. C., copper was combined with tin to make bronze—an alloy that allowed stronger weapons and tools. Brass, an alloy of copper and zinc, probably was not developed until 300 A.D.

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