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comparison of ore hardness measurements for grinding mill

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MODELING THE SPECIFIC GRINDING ENERGY AND BALL …

Specific grinding energy w from Denver slide rule (kwh/s.t.) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Specific grinding energy w from the proposed model (kwh/s.t.) Comparison line …

Nevada Gold Cyanide Mill Tailings Regulation: A Comparison ...

hardness of the ore and the ore feed size required for the grinding mill. Rod mills and balls accept ore crushed to less than 1 to 1-1/2 inches, and autogenous and semi-autogenous mills (where the ore acts as all or part of the grinding media) can accept ore as coarse as 6 inches in diameter. Grinding is usually done wet using recycled

economic scale of ore grinding mill

Comparison of Ore Hardness Measurements for Grinding Mill ... Key Words: Comminution Tests Bond Work Indices JKTech Grinding Mill Design Database. Ore Hardness Measurements JK Drop Weight Test SAGDesign Test ... Scales as noted in Legend - kWh/t Axbx10 ksi g/cc. C u m . D is ...

Comparison of Ore Hardness Measurements for

PAPER 3 Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1 Principal Consulting Engineer David Meadows2 Manager ...

comparison between ore mill and ore mill

Comparison of Ore Hardness Measurements for . PAPER 3 Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, Principal Consulting Engineer David Meadows2, Manager ... Inquire Now; similarities between a crusher and a grinder mill

comparison of ore hardness measurements

Comparison of Ore Hardness Measurements for Grinding Mill, crushing, and rod mill work indices, abrasion, of ore in-situ in the mine or in a dry crushing . Crushing in Mineral Processing. In mineral processing or, by nipping the ore between a fixed/stationary, understand as they relate to crushing The (Ai) Abrasion Index measures the .

Comparison Of Ore Hardness Measurements

Comparison of Ore Hardness Measurements for Grinding Mill Key Words Comminution Tests Bond Work Indices JKTech Grinding Mill Ore Hardness Measurements JK. Learn More; Comparison Pulverizing Machine Gold Crusher. Comparison of the specific gold sand stone coated where to find grinding mills in south CGM mining application of the two mills is an ...

Grinding Circuit Design for Adanac Moly Corp using a ...

Commissioning and Operating Experience with Gekko's Gold Ore Comparison of Ore Hardness Measurements for Grinding Mill De Development of New Frothers through Hydrodynamic Characteriz Developments and New Applications for Biogenic Sulphide Reag Effect of Operating Variables in Knelson Concentrators: A Pi

comparison of ore hardness measurements for grinding mill

Comparison of ore hardness measurements for . Hardest measurements were used to allow any blend of feed to be treated at design t/h. A total of 9 kWh/t of grinding energy was indicated and this could be provided either in a single stage SAG mill to produce the P80 200 micron product, or a two stage circuit with equal power on the SAG and ball mills using the design Bond Wi of 11.5 kWh/t.

Comparison of ore hardness measurements for grinding mill ...

Hardest measurements were used to allow any blend of feed to be treated at design t/h. A total of 9 kWh/t of grinding energy was indicated and this could be provided either in a single stage SAG mill to produce the P80 200 micron product, or a two stage circuit with equal power on the SAG and ball mills using the design Bond Wi of 11.5 kWh/t.

ore comparison of ore hardness measurements aggregate crushi

Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, Principal Consulting Engineer David Meadows2, Manager Mineral Processing Development 1 Starkey Associates 344-115 George St. Oakville, ON L6J 0A2 PH: (416) 735-7512 E-mail: [email protected] 2 Phelps Dodge Corporation One North Central Ave ...

THE VALUE OF DAILY HIT ORE HARDNESS TESTING OF SAG …

Meadowbank has a two-stage grinding mill circuit (open circuit SAG + closed circuit ball mill), fed with secondary crushed ore from the mine with a F 80 size of around 25 mm. The throughput capacity of the Meadowbank grinding circuit is 445 to 515 tonnes per hour (t/h) depending on ore type, at a final grind size P 80 of 75 to 110 microns (µm).

Comparison Of Ore Hardness Measurements For Grinding Mill ...

Comparison of Ore Hardness Measurements for Grinding Mill. PAPER 3 Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, Principal Consulting Engineer David Meadows2, Manager Mineral Processing Development 1 Starkey & Associates 344-115 George St Oakville, ON L6J 0A2.

comparison of ore hardness measurements

Comparison of ore hardness measurements for . Comparison of ore hardness measurements for grinding mill design for the Tenke Project J Starkey August 19,2009 As part of the ongoing project development for the Tenke Fungurume CopperCobalt Project in the Democratic Republic of Congo, Phelps Dodge Corporation (now FMI)

comparison of ore hardness measurements

Comparison Of Ore Hardness Measurements. Comparison of ore hardness measurements for grindi 201356comparison of ore hardness measurements for grinding mill design for the tenke project john starkey1 principal consulting engineer ore hardness measurements pare with each other when done on the same samples values for a x b are all close to or above 100 and this …

Effect of material properties on the grinding effect of ...

The characteristics of grinding materials mainly refer to the hardness, particle size, moisture content and grindability of materials. 1.Feeding Hardness. The hardness of the feed is usually characterized by Mohr hardness (range 1-10). The hardness of calcite is generally between 2.8-3.0, which varies with the type and content of inclusions in ...

Comparison Of Ore Hardness Measurements Aggregate Crushing

Comparison Of Ore Hardness Measurements For Grinding Mill. Aug 19 the comparison of these six results gives con text to how the various measurements relate to each other and how they can be used to obtain an accurate design for the grinding mills required for the tenke project this is the first published direct comparison between jk drop weight standard bond work …

Ore Hardness Testing -SAG Mill Tonnage Estimation Method

For design purposes, you need an estimation or prediction of your SAG Mill's tonnage; well, there are 3 ways to generate good rock "ore" hardness testing data for SAG and ball mill circuit grindability from half drill core. We can abbreviate the discussion by saying there are three "religions" of grinding, and there are small-scale tests suitable for all three of the major religions ...

Comparison Of Ore Hardness Measurements For Grinding Mill ...

Comparison of Ore Hardness Measurements for . Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1 . determining the sie of grinding mills to support a 7000 mtpd operation. Six samples were tested . Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project

comparison of ore hardness measurements for grinding mill ...

gyratory crusher design ore hardness. PAPER 3 Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, Principal …

Predicting mill feed grind characteristics through ...

Comparison of ore hardness measurements for grinding mill design for the Tenke project CMP Conf. Proc. ( 2007 ), pp. 19 - 31 View Record in Scopus Google Scholar

Improved Production Forecasting Through Geometallurgical ...

recognizing the effect of ore type on hardness. The plant was audited several times and samples of mill feed tested for SPI value, for comparison against energy used and grind achieved. It was demonstrated that SPI value was a reliable measure of the energy needed to mill a ton of ore to a specified size. The data was compared

11.9.19 Comparison of Ore Hardness Measurements for Mill ...

. PAPER 3. Comparison of Ore Hardness Measurements for. Grinding Mill Design for the Tenke Project. John Starkey1, Principal Consulting Engineer

Comparison of Ore Hardness Measurements for Grinding Mill ...

PAPER 3 Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, Principal Consulting Engineer David Meadows2, Manager Mineral Processing Development 1 Starkey & Associates 344-115 George St. Oakville, ON L6J 0A2

Factors Influence Ore Grinding Mill Efficiency - JXSC Mining

Grinding mill medium is the main factor affecting grinding efficiency. In industrial production, the type, shape, size ratio and filling rate of grinding medium should be determined according to the grain size characteristics, hardness characteristics and product particle size requirements of ore materials.

comparison of ore hardness measurements aggregate crushing

comparison of ore hardness measurements aggregate crushing. Aug 19 2009 The comparison of these six results gives con text to how the various measurements relate to each other and how they can be used to obtain an accurate design for the grinding mills required for the Tenke Project This is the first published direct comparison between JK Drop Weight standard Bond work indices and SAGDesign ...

comparison of ore hardness measurements

Comparison of Hardness, FRF, Compressibility, and Ultra . Compressibility FRF Hardness Modulus 100 90 80 70 60 50 40 30 20 10 0 A b s o l u t e C h a n g e 13.5202 2.26982 16.0978 5.80811 Absolute Change vs. Measurement Type

comparison of ore hardness measurements

Comparison of Ore Hardness Measurements for Grinding Mill. ore hardness measurements compare with each other when done on the same samples. This paper will therefore present the first such comparison using test results from the Phelps Dodge Tenke Fungurume Project where six composite samples were examined by the tests noted below.

comparison of ore hardness measurements for grinding mill

Economical Grinding Mill For Manganese Ore . Comparison of Ore Hardness Measurements for . PAPER 3 Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, Principal Consulting Engineer David Meadows2, Manager Mineral Processing Development 1 Starkey Associates 344-115 George St. Oakville, ON L6J 0A2.

Comparison of Ore Hardness Measurements for Grinding Mill ...

Starkey, John ; Meadows, David (2007). Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project. Canadian Mineral Processors Proceedings 2007 Citation Downloads Reference Manager (RIS) SpreadSheed (CSV)