New York -- Mining and commodities trade company Alto Group has completed its acquisition of an MSI S5 (100 TPH) gold mining production plant.
Alto said a polyurethane-based screen is a crucial part of the new plant.
Madden Steel Inc.'s gold mining plant has a full-power 4-point drive system (which eliminates the chain drive), is fully reversible, and has a full variable-speed control. The gold trommel which Alto has acquired has an extra heavy shell and is completely lined with abrasion-resistant plate in all wear areas, the company said.
Gold trommels have additional reinforcement in drive locations, and incorporate oversized shafts and bearings.
Testing showed that some of the biggest complaints with Trommels is screen blockage, so MSI has installed octagon screening media made using urethane, with tapered-relief, to help eliminate this issue, a change which Alto said is "an expensive but needed adaptation."
Another advantage with this screen, according to Alto, is that it has 10 to 15 times the life of steel. Also, Alto noted, the screen media snaps into place, which takes minutes instead of days or weeks, as with some other systems.
With the machine properly equipped, proper screen sizing, and evenly fed material, Alto said MSI's test plant was able to achieve throughputs of up to 142 tons an hour.