heap leaching copper ores

Heap Leaching Oxide and Sulfide Copper Ores

21 Leaching Most copper leaching is done by piling broken ore (∼05% Cu) into flat-surface, 3–10m high, 10 4 –10 5 m 2 heaps of ore and then sprinkling dilute sulfuric acid lixiviant on to the heap surface The lixiviant trickles down through the heap and leaches copper from its minerals to produce a pregnant leach solution containing 1–5kg Cum −3

Heap Leaching - 911 Metallurgist

Sep 05, 2010· Heap leaching of oxidized, complex, and waste copper ores of the Volkovskoe deposit is considered Based on the results of an investigation, the preliminary granulation of milled ore with sulfuric acid (25–75 kg/t ore) is recommended Introduction of this procedure leads to a decrease in the leaching time by 15–30% and allows one to obtain solutions more concentrated by copper

Improvements in Copper heap leaching by use of wetting ,

fluence of wetting agents on copper ore heap leaching regarding the kinetic of leaching and the cop-per recovery rate Fundamentals Heap leaching Heap leaching belongs to the group of percolation leaching processes and operates over ground The procedure is illustrated in Figure 1The oxide copper ore is piled up on leach pads, which have

Copper Mining and Processing: Processing Copper Ores ,

The heap leaching of copper ores is an example of such a trend, where heap leaching was initially applied only to the acid leaching of oxide or The most important factors to be considered in oxide heap leaching are the copper dissolution, acid consumption, and gangue chemistry The rate at ,

Agglomeration of fine-sized copper ore in heap leaching through g,

Improvements in Copper heap leaching by use of wetting agents

Improvements in Copper heap leaching by use of wetting agents

fluence of wetting agents on copper ore heap leaching regarding the kinetic of leaching and the cop-per recovery rate Fundamentals Heap leaching Heap leaching belongs to the group of percolation leaching processes and operates over ground The procedure is illustrated in Figure 1The oxide copper ore is piled up on leach pads, which have

US6569391B1 - Heap leaching copper ore using sodium ,

The heap leaching of copper bearing ores is improved by using sodium nitrate as an oxidizing chemical reactive in a sulphuric acid leaching solution In particular, the ore is crushed to

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