Show ESS cost to operate than any mill sold grinding at 35 to 40 mesh hard quartz this mill wears less than one pound of metal per ton on the whole mill capacities and prices f 0 b san francisco Fian cisco 4 foot mill 7 balls 25 to 40 tons 1250 f f py 1750 6 11 50 80 8 15 ay f the above figures are based on hard quartz grinding at 35 to 40 mesh all balls are 16 inches in diameter and weigh pounds each 9 horsepower required to start and operate at full speed the 4 foot mill 18 H P for the 6 foot mill and 30 for the 8 foot mill the drum or top is loaded with as much additional dit ional weight as the hardness of the ore requires this is a fast speed mill and any given spot in the race is hit by a ball at the rate of eight times per second UR mills are exceeding our claims interesting data from mines where working furnished upon application balls have planetary planeta and scouring movement when grinding thus being forced to remain round centrifugal force of balls gives us best screen discharge of any mill on the market hence we slime less than any mill made especially successful on chrome manganese and kindred ores where least sliming must be had ICK in because you have not heard what our mills are doing they are not new we have been proving our principle of grinding on this coast for more than a year let us give you the names of owners and superintendents using them our mills are in to stay and sooner or later you will see them in your district we install complete plants A good metallurgist on our staff centralized ball mill 1 1 co san francisco building robert grey general manager |