The Basics of Froth Flotation
June 2015 by Chris RalphI thought it might be worthwhile to take a look at the basics of this important mineral separation technique and how a miner can use it to recover the values out of an ore.
Silver refining has been used from ancient times to change the characteristics of the metal. Early metallurgists refined silver by heating it a couple hundred degrees above its melting point and holding the metal at an elevated temperature for a period of time.
Silver recovery from low-level solutions is frequently done in a cell that has a cathode with 2 to 5 or more times the surface area as the anode.
“The evidence is clear—mineral deposits alone are not enough to attract precious commodity investment dollars...”
Besides the EPA issue, our major priority is to work on the proposed amendment to the National Strategic and Critical Minerals Production Act (S 145), a bill proposed in the Senate by US Senator Dean Heller (R-Nevada).
In an old mine that does not have stopes, you know the old miners did not take much if any ore out of that excavation. On the other hand, if you see large stopes within the mine you know that it is these places where the miners found profitable ore deposits within the vein.
In last month’s issue we covered the initial discovery of gold, the subsequent gold rush that occurred around Nome, some of the geology of the area and past production. We’ll conclude the article in this issue with a further examination of the geology and deposit types, discuss the resources...
There are a few questions you will need to ask yourself before you apply for a suction dredge permit from the State Water Resources Control Board.
The Bawl Mill • Ask The Experts • Ask The Experts • Ask The Experts • Ask The Experts • Ask The Experts • Companion Gold • The Smell of Gold—Part I • A Few Tips and Tricks for Beach Mining • Direct and Constructive Notice • Moore Creek, Alaska—Then and Now • Nome Offshore Dredging Creates Challenges • Mining Journal Wins Again! • The Montanore Copper and Silver Project • Family Wins Back Seized Gold Coins • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices