Wheaton River Minerals (WRM Toronto) Message Board

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Gold/Mining/Energy : Wheaton River Minerals (WRM Toronto)

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To: M5PRO who wrote (38)	3/30/1997 11:17:00 PM
From: joe sax	of 350

Matt, I think you are somewhat confused!All the gold mines that I ever had the opportunity to visit always put the rock from the underground into a crushing circuit. In most cases a crushing circuit consists of a jaw crusher and a cone crusher.The jaw crusher crushes the rock down to about a six inch size or better.After this the rock is introduced to the cone crusher which crushes the rock down to more or less a course beach sand.The rock is now ready to be introduced to the grinding circuit which consists of either a SAG mill, a ball mill and even possibly a rod mill.Ball mills can only accept fine crushed material ie.cone crusher discharge. I think what you are trying to say is that Wheaton RIVER will eliminate the cone crusher thus preventing any gumming up of the cone altogether and as a result allowing the introduction of larger size rocks directly into the SAG MILL.A SAG mill unlike a ball mill utilizes a lower percentage of steel balls on account that the collosion of the larger size rocks act as a grinding medium. REGARDS JOE SAX

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