Dear Friends;
Most of expericenced and skillfull miners and metallurgists in this forum are suffering from gold bearing black sand, pyrite and sulfide ore matrix. The first principal is generally to roast ore in 650 C° to convert sulphides into oxides by gassing off SOX, NOX in outdoor and to liberate gold from locked in sulfide matrix despite of many toxic gas danger and higher temperature and long roasting time.
Has anyone tried to make fusing reaction sulfide ores (refractory) that contain gold withi ammonium chloride and ammonium nitrate (may be calcium ammonium nitrate is not explosive) at moderately low temperature of 142 °C.
At standart protocol in order to determine if there is gold or not in sulfide ores . A retired proffessor at Friei University of Walter Franke in Berlin proposed following procedures.
A pinch of refractory gold ore
One part ammonium chloride
Two part ammonium nitrate
Mix all of them
Heat until 142 C°
After cooling drop the HCl onto melted syrup
One drop SnCl2
Finally see purple color.
İf we look at this protocol, we can thermally decompose and then breake sulfide bonds of refractory ores concentrates.
İn addition to this, this stuffs are so cheap and energy consumption would be lower at 142 C.
Question one? What would be thermal decomposition reaction of this two stuff with just pyrite?
NH4Cl2+NH4NO3+FeS2 ====>heat ????
Any considerations would be appreciated.
Erdem
.
Most of expericenced and skillfull miners and metallurgists in this forum are suffering from gold bearing black sand, pyrite and sulfide ore matrix. The first principal is generally to roast ore in 650 C° to convert sulphides into oxides by gassing off SOX, NOX in outdoor and to liberate gold from locked in sulfide matrix despite of many toxic gas danger and higher temperature and long roasting time.
Has anyone tried to make fusing reaction sulfide ores (refractory) that contain gold withi ammonium chloride and ammonium nitrate (may be calcium ammonium nitrate is not explosive) at moderately low temperature of 142 °C.
At standart protocol in order to determine if there is gold or not in sulfide ores . A retired proffessor at Friei University of Walter Franke in Berlin proposed following procedures.
A pinch of refractory gold ore
One part ammonium chloride
Two part ammonium nitrate
Mix all of them
Heat until 142 C°
After cooling drop the HCl onto melted syrup
One drop SnCl2
Finally see purple color.
İf we look at this protocol, we can thermally decompose and then breake sulfide bonds of refractory ores concentrates.
İn addition to this, this stuffs are so cheap and energy consumption would be lower at 142 C.
Question one? What would be thermal decomposition reaction of this two stuff with just pyrite?
NH4Cl2+NH4NO3+FeS2 ====>heat ????
Any considerations would be appreciated.
Erdem
.