Method Of Heap Leaching Of Copper Ores. 57 Abstract The invention relates to the mining industry and can be used in the processing of copper ore heap leaching methods The inventive method includes the layerbylayer formation of the ore dump with the addition of sulfide material and sulphide material occiput as the middle layer in an amount to provide a ratio of sulfide sulfur in the ore body ...
Optimal design and planning of heap leaching process Application to copper oxide leaching ore grade and other variables were analyzed for each system From the results, it can be concluded Integrated process control to enhance heap leach
188.8.131.52.1 Copper Ore Heap leaching. The extraction of copper from ores by hydrometallurgical methods involves leaching. Almost exclusively, leaching is performed on heaps of materials. Heap leaching is conducted on ore stockpiles to static heaps to onoff dynamically loaded pads.
of the heap, gangue minerals, temperature, liberation char acteristic of an ore and ore particle size distribution affect . However, the optimal pH of the leaching liquor on the ore containing low grade copper, cobalt and iron oxides has never been investigated.
Heap Leaching In Ore Processing Optimal Performance. Heap Leaching In Ore Processing Optimal Performance. gained by hydrometallurgical leaching processes mainly by heap leaching with sulfuric acid and subsequent solvent extraction SX and electro winning EW treatment Typical ore heaps in heap leaching are 4 12 m high and have a base area of several thousand square meters and are made up of ...
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This method appears to be a simple, yet accurate, means for determining the free acid content of solutions containing hydrolyzable cations and a common anion. It should be of particular value in analyzing leach solutions. While testing has indicated that it works well on liquors containing H2SO4 it remains to be seen how well it will work on HCl and HNO3 solutions.
In this method, the acid content of an unknown sample is determined by comparing its pH with that of a known sample having a pH value close to that of the unknown. Conversion of pH values to grams of acid per liter of solution is accomplished by means of the equation pH = log . It has been determined empirically that the pH of a sulfuric acid solution is not appreciably influenced by the presence of other hydrolyzable or nanhydrolyzable cations...
Equipment and Supplies
The main equipment used in this determination is a pH meter. While a pH meter with a digital readout or one with an expanded scale may be useful in obtaining a high degree of accuracy, a standard pH meter is sufficient in most applications. A single, combination electrode is much easier to use than two standard electrodes. A number of standard acid solutions are required, i.e., solutions in 0.25 gpl H2SO4 increments up to 3.00 gpl H2SO4 in 0. 50 gpl H2SO4 increments between 3.00 gpl H2SO4 a...