In the copper mining industry, the leaching is an industrial mining method to dig out precious metals and copper compounds from ore. As for the copper leaching process, the copper ore is crushed into tiny chunks and heaped on an impermeable plastic and/or clay lined leach pad where it may be irrigated with a leach solution to melt the valuable metals. Sprinklers, or frequently drip irrigation, are used to minimize evaporation. The solution then percolates through the heap and leaches out the precious metal. This can take many weeks. The leach solution having the dissolved metals is then accumulated.
Entire Process of Copper Leaching
The method of leaching is akin to the cyanide technique, above, except sulfuric acid is utilized to dissolve copper from its ores. The acid is recycled from the solvent withdrawal circuit and is used again on the leach pad. A byproduct is iron (II) sulfate, jarosite, which is manufactured as a byproduct of leaching pyrite, and at times even the same sulfuric acid that is needed for the procedure. Although the heap leaching is a low cost-method, it usually has recovery rates of 60-70%, though there are exceptions. It is usually most profitable with low-grade ores. Higher-grade ores are normally put through more complex milling processes where elevated recoveries justify the extra cost. The leaching method is chosen depended on the propertyof the copper ore.
Copper Concentrator for the Process of Copper Leaching
The copper concentrator is the main equipment used in the leaching process for copper concentrate. The copper ore concentrator simply provides a holding area large enough to allow the concentrate time to settle to the bottom. Once it has settled, there are adjustable rakes that rotate and pull the solids to an exit point. With the solids settling to the bottom, the liquid, called the liquor, overflows into a launder. Depending upon how the thickener is being used, these two substances, the solids and liquor, will go their separate ways each being processed in accordance with the needs of the circuit. Besides the copper ore leaching process, Zenith’s copper ore concentrator is also applied in the separation of nonferrous metal and ferrous metals, including the tungsten, tin, iron, manganese and other nonferrous metals , nonmetallic mineral processing plant, building materials, chemical industry.
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