Marcy mill

Marcy mill

[′mär·sē ‚mil]
(mining engineering)
A ball mill with a vertical grate diaphragm placed near the discharge end; screens for sizing the material are located between the diaphragm and the end of the tube.
References in periodicals archive ?
There are three ball mills: a 10.5 X 12-ft Marcy mill and two 8 X 8-ft Humboldt mills which have been converted to grate discharge to increase capacity.
x 12.5 ft long Marcy Mill) operating in closed circuit with two Krebs D10B cyclones.