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1. What is the grade of the copper ore?

 Most copper ores contain only a small percentage of copper metal bound up within valuable ore minerals, with the remainder of the ore being unwanted rock or gangue minerals, typically silicate minerals or oxide minerals for which there is often no value. The average grade of copper ores is below 0.6% copper, with a proportion of economic ore minerals (including copper) being less than 2% of the total volume of the ore rock. A key objective in the metallurgical treatment of any ore is the separation of ore minerals from gangue minerals within the rock.   Pakistan hot sale 100 ton per hour copper flotation plant supplier

2. Different methods should be used according to copper ore condition

Subsequent steps depend on the nature of the ore containing the copper. For oxide ores, a hydrometallurgical liberation process is normally undertaken, which uses the soluble nature of the ore minerals to the advantage of the metallurgical treatment plant. For sulfide ores, both secondary (supergene) and primary (unweathered), froth flotation is used to physically separate ore from gangue. For special native copper bearing ore bodies or sections of ore bodies rich in supergen native copper, this mineral can be recovered by a simple gravity circuit.   Pakistan hot sale 100 ton per hour copper flotation plant supplier

3. How to process the  sulfide copper ores?

Secondary sulfides – those formed by supergene secondary enrichment – are resistant (refractory) to sulfuric leaching. These ores are a mixture of copper carbonate, sulfate, phosphate, and oxide minerals and secondary sulfide minerals, dominantly chalcocite but other minerals such as digenite can be important in some deposits.
Supergene ores rich in sulfides may be concentrated using froth flotation. A typical concentrate of chalcocite can grade between 37% and 40% copper in sulfide, making them relatively cheap to smelt compared to chalcopyrite concentrates. Some supergene sulfide deposits can be leached using a bacterial oxidation heap leach process to oxidize the sulfides to sulfuric acid, which also allows for simultaneous leaching with sulfuric acid to produce a copper sulfate solution. As with oxide ores,

solvent extraction and electrowinning technologies are used to recover the copper from the pregnant leach solution.

4. How to process the Oxide ores?

Oxide ores are usually leached by sulfuric acid, usually in a heap leaching or dump leaching process to liberate the copper minerals into a solution of sulfuric acid laden with copper sulfate in solution. The copper sulfate solution (the pregnant leach solution) is then stripped of copper via a solvent extraction and electrowinning plant, with the barred (denuded) sulfuric acid recycled back on to the heaps. Alternatively, the copper can be precipitated out of the pregnant solution by contacting it with scrap iron; a process called cementation. Cement copper is normally less pure than copper. Commonly sulfuric acid is used as a leachant for copper oxide, although it is possible to use water, particularly for ores rich in ultra-soluble sulfate minerals.   Pakistan hot sale 100 ton per hour copper flotation plant supplier

5. What equipments are used for the processing of copper ore?

1). Crushing and Grinding stage

The extracted ore should be crushed by jaw crusher initially and then by fine crusher. When it gets the reasonable fineness, it is transported into ball mill by elevating conveyer and feeder, and is milled by ball mill.

2). Classifying stage

The subtle milled ore gets the next procedure: classification. There is a theory that if the weights of solid particles are different, the sedimentations will be different, and the mixed ore can be classified by screw classifier.

3). Mixing and Flotation stage

The classified ore gets into mixing tank for fully mixing. At this stage, chemical agent for foam can be added. After fully mixing, the slurry will enter into flotation machine.

4). Concentrating thickening and drying

Then copper concentrate is separated from others. Since the separated ore are wet, they should be dewatered by thicker initially, and dried by dryer.

6. How to equip the machines for your copper mine?

For the equipments of your specific copper mine, please contact Linda or send us inquiries directly, our engineers will make you the professional facilitation, we will supply you the best qualified machines with the least price.

Producing high-quality and reliable machines is always our first priority, because we know that our success depends entirely on the satisfaction of our customers. We never give-up quality to save cost, instead we manufacture our machines to supply you the best need.

If you have any questions or want to learn about the machines, you are welcome to contact Linda. Tel: 86-15890678137

Skype: yfchinamachine

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