Evaluation of graphite depressants in a poly metallic sulfide flotation .
In addition, the effect these depressants on silver (byproduct) grade and .. This is followed by lignin decomposition  into multiple small functional groups. . replaces zinc ions from sphalerite surfaces making it a pseudo copper ore . . Table 2. Reagents dosage used for the investigation in Pb Zn flotation circuit.
Silver, explained Global X Funds
Oct 4, 2016 . Silver ore is mined through both open pit and underground methods. . process called flotation to achieve mineral concentrations that are 30 40 times . by product of mining other metals, such as copper, lead and zinc.2 As expected, . often make it an irreplaceable input, even if the price of silver rises.4.Get Price