A chalcopyrite based ore if autoclaved in MSM media at neutral pH, can it be oxidized? if yes then to what extent?
Atacamite (Cu2(OH)3Cl) and antlerite (CuSO4·2Cu(OH)2) might have been precipitated at 108 °C at low acidity, typically at pH > 2.8.
The smaller the ore granularity, the higher the chalcopyrite leaching rate, so the ores are milled fully before the experiment..Firstly, O2 diffuses into water from the gas/liquid
interface and then diffuses furthermore. It participates in reaction after it touches the ore surface. It is known that the influence of O2 on the chemical reaction is dependent
on each O2 diffusible step during the above process. The gas solubility in the water is affected by the temperature and p(O2). The pressure of O2 has direct proportion to the
O2 concentration in the water. Enhancing p(O2) promotes the O2 solubility and the oxidation speed is increased
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