I. Copper ore beneficiation
Classification of copper ore: copper ore can be divided into oxidized ore (oxidation rate > 30%), mixed ore (oxidation rate in 10-30%) and sulfide ore (oxidation rate of 10%) three categories according to its oxidation rate. The minimum industrial grade of copper ore, generally required not less than 0.4-0.5%, for copper ore, processing methods are more flexible, the ore associated elements can be extracted. For copper ore, the processing method is more flexible, the associated elements in the ore can be extracted.
Beneficiation of copper ore: The beneficiation process of copper ore is mainly crushing - ball milling - classification - flotation - selection, etc., through the beneficiation of copper ore can be obtained after a certain grade of copper concentrate. Copper ore dressing equipment mainly includes crusher, vibrating feeder, ball mill, spiral classifier, magnetic separator, flotation machine, concentration drum and dryer. Copper ore dressing process is roughly divided into three parts:
1. Crushing part: the basic process of crushing ore process. Its purpose is the original ore crushed to the appropriate size, suitable for grinding part.
2. Grinding part: The grinding and crushing part further processes the ore to get a smaller size which is suitable for flotation to separate the material.
3. Flotation Section: The flotation process is an important process for upgrading copper ore. Chemical reagents will be added to the mixer/blender to make the chemical reaction.
Second, the global copper concentrate production situation
Global copper concentrate production is generally on the rise, in 2014, the global mine production of 18.52 million tons (metal tons, the same below), while the mine capacity reached 21.71 million tons.After 2005, by the world's largest copper mine production Escondida in the expansion began to operate at full capacity and new copper mine projects have been put into production, the global copper concentrate capacity and production have a relatively large Growth.
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