mill ore

mill ore

[′mil ‚ȯr]
(mining engineering)
An ore that must be given some preliminary treatment before a marketable grade or a grade suitable for further treatment can be obtained.
References in periodicals archive ?
The use of electricity to mill ore is usually the largest consumer of energy on a mine site and ore comminution constitutes a significant percentage of electricity consumed worldwide, Mr Smith said.
Northern Sun currently has a contract in place with Wallbridge Mining to mill ore from its copper-nickel-PGM Broken Hammer deposit in Sudbury.
In addition to Trench 3 currently being tested, other samples of run of mill ore are to be excavated and treated similarly at the testing laboratories in Adelaide to confirm the reliability of this beneficiation opportunity over a large-scale area.
Refractory mill ore currently averages about 0.25-oz/mt Au, while leach ore averaged 0.080 oz/mt.
Cortez had started mining in June, and by September 1 had accumulated a sufficient stockpile of oxidised mill ore to commence milling operations and gold production.
For the quarter ended March 31, the average grade of mill ore had increased to 5.35 g/t Au, up from 3.87 g/t in the previous quarter, and the company received $29,435 in cash as well as 319.5 oz of gold.
Recovered metal-oxide sludge from California Gulch is mixed with local mill ore concentrates and shipped to an out-of-state smelter for metal recovery.
The ore then travels on a one-mile-underground conveyor, a 10.5-mi conveyor through the existing 10-mi rail-haulage tunnel, overland via a four-mile conveyor, and finally distributed on the mill ore storage via a short stockpile conveyor.
Morenci (Arizona) mined 39.1 Mt of mill ore, which, plus leaching, yielded 304,000 t Cu; Tyrone (New Mexico) 14.9 Mt of mill ore (plus leaching) yielded 144,000 t Cu; Chino (New Mexico) 15.4 Mt of mill ore (plus leaching) yielded 133,000 t Cu; and Bisbee (Arizona) precipitates and miscellaneous, 5,300 t Cu.
The company plans to custom mill ore from northeastern Ontario and northwestern Quebec.
Ore Reserves Type Volume Grade Gold (K st) (oz/st) (K oz) Oxide mill ore 23,640 0.095 2,248 ROM leach ore 60,664 0.022 1,323 Refractory mill ore 66,125 0.113 7,454 Total ore reserves 150,429 0.073 11,021
When work is completed the mill will have both gold and base metals circuits, allowing the facility to custom mill ore from northeastern Ontario and northwestern Quebec.