the largest grinding mill for copper ore

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Grasberg Open Pit Indonesia Mining Frontier

Ore undergoes primary crushing at the mine before being delivered by ore passes to the mill complex for further crushing grinding and flotation. Grasbergs milling and concentrating complex is the largest in the world with four crushers and two giant semiautogenous grinding SAG units processing a daily average of 240000t of ore.

RTB Bor Serbia: Copper ore production up processing costs

Fine grinding comes after primary grinding. Since May 2015 the fine grinding is performed with Metsos Vertimill VTM 400 to a size of P80 of minus 40 microns at a rate of 42 metric tons per hour. Metsos Vertimill VTM400 vertical grinding mill significantly enhances RTB Bors recovery of copper slag reprocessing.

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SemiAutogenous Grinding of Copper Ores

The length and diameter of a SAG mill are determined principally by the desired throughput capacity and the grindability of the ore. For conventional ball mill grinding grindability is usually expressed in terms of the Bond Work Index which is determined in laboratory tests and expresses numerically the power required to reduce rock from a

Semi Autogenous Grinding Mill an overview ScienceDirect

30.3.1 Leaching. As mined ore is typically less than 0.25 m in size. It is ground to a particle size of 80 passing 100 m in a semiautogenous grinding mill then sent on to leaching using sulfuric acid and sulfur dioxide under atmospheric conditions. A schematic flowsheet of this part of the process is shown in Figure 30.4.

Paper 25 Copper Mountain Overview on the Grinding Mills

Table 4 5 and 6 include the technical data for the Copper Mountain ball mills. Table 4 general ball mill data Specifi ion Data Mill size 7.315 M 24 feet diameter by 12.039 M 39.5 feet long Mill type Wet grinding overflow discharge Mill drive motor size 17000 HP Mill drive motor type Synchronous 200 RPM Inside diameter 7315 mm

How is Copper Ore Processed

One ball mill is in closed circuit with two hydrocyclone classifiers for grinding Chingola open pit ore only. The other ball mills grind washed ore from the Nchanga West underground mine and the Nchanga open pit. Eleven of the 9 x 8 ball mills are Head Wrightson and one is an Allis Chalmers.

Utah International Island Copper Complex Canada

The grinding mills convert the ore into approximately 230000 tons annually of copper concentrate and 1800 tons of molybdenum concentrate. Island Copper 39s six autogenous grinding mills each 32 feet in diameter and 14 feet in length comprised the largest totally autogenous grinding circuit in the copper industry at the time.

HIGmillTM mill for regrind project Mineral Processing

Swiss Tower Mills STM Minerals Ltd has won together with its technology partner Outotec an order to provide a HIG1600 regrind mill for the Mutanda Mine Mumi plant in the Democratic Republic of Congo Fig. . The contract was awarded in June 2013. Mutanda is a high grade copper and cobalt producer with its operations lo ed in the province

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