Table of ContentsSAG Mill ChargeSAG Mill Horsepower Drive PowerOre Testing for AG SAG Grinding Mill Design Mill Sizing After laboratory and pilot plant testing confirm the feasibility of autogenous or semiautogenous grinding it can be used to establish the exact grinding circuit and mill size In the pilot plant tests the tare power of the pilot plant mills should be determined ...As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.
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Configuration: Jaw crusher, grinding mill, bucket elevator, magnetic vibrating feeder, transmission gear, main engine.
Applied Materials: Feldspar, calcite, talc, barite, fluorite, rare earth, marble, ceramics, bauxite, manganese, phosphate rock, etc.
Application Area: Building materials, chemicals, fertilizer, metallurgy, mining, refractory, ceramic, steel, thermal power, coal, etc.
Feeding Size: ≤25-≤30mm
Discharging Size: 0.125- 0.044mm
Production Capacity: 2-176TPH
Cylinder Capacity: 9-285m³
Production Capacity: 1.9-76TPH
Application Range: Industries of mining, ore beneficiation, construction materials and chemical engineering.
Basalt is the best material for repairing roads, railways and airfield runways. It has the advantages of abrasion resistance, less water consumption, poor conductivity, strong compressive strength, low crushing value, strong corrosion resistance and asp...
Production Capacity:50-800TPH
Application Field:Hydropower, building material, highway, city construction, metallurgy, coal mining and so on.etc.
Equipped with vibrator feeder, jaw crusher, sand maker (vertical shaft impact crusher), vibrating screen, sand washer, belt conveyor and central electronic control, sand making plant can process the granite, limestone, basalt, cobble and other materials t...
Processing capacity: 50-520 t/hApplied material: granite, basalt
Main Equipments: jaw crusher, cone crusher, ball mill, flotation cell, thickner and bucket hoist conveyor....
Raw Material: gold ore
Crushing Capacity: 500t/h
Installation Time and Site: Jan. 2014 in Johannesburg, South Africa
The 250t/h basalt crushing line owner has a large-sized mining field in Zambia....
Raw Material: basalt
Discharging Size: 35-45mm
Crushing Capacity: 250t/h
Table of ContentsSAG Mill ChargeSAG Mill Horsepower Drive PowerOre Testing for AG SAG Grinding Mill Design Mill Sizing After laboratory and pilot plant testing confirm the feasibility of autogenous or semiautogenous grinding it can be used to establish the exact grinding circuit and mill size In the pilot plant tests the tare power of the pilot plant mills should be determined
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Some design methods Lane et al 2013 Morrell 2004 Siddall Putland 2007 predict the total comminution energy requirements of SAG millbased circuits using work indices measured in
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Choosing a SAG Mill to Achieve Design Performance 201356 Key Words SAG mill design optimum conditions grinding pilot testing 1 ABSTRACT A great deal of effort has been expended in the last 11 years by the authors and others to identify the correct power required to grind ore in a SAG mill by developing ore hardness variability functions for the ore body to be mined
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design and 3 accurate benchmark projects this technology has emerged as a proven mill design method based on the direct measurement of SAG pinion energy in kWht using standard commercial grinding conditions for the test in a 05 m diameter SAG mill In the 2009 database SAG pinion energies to grind from F80 152 mm to T80 17 mm vary
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LG A mill power equation for SAG mills Minerals and Metallurgical Processing Feb 1990 pp5762 Gross power No load power Net power drawn by the charge 813 The net power is calculated from Net power KD25L e c Watts 814 In equation 814 D is the diameter inside the mill liners and Le is the effective length of the mill including the
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A further explanation is required to explain the importance of designing the SAG mill chamber to draw required power at optimum operating conditions of 75 critical speed and less than 30 by volume load Recent studies in the threefoot diameter SAG mill are instructive The following graph shows the relevant facts as Figure 2
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powerbased design and analyses of conventional grinding circuits Bond 1961 Bond’s third theory is presented in 1 By rearranging the formula to 2 the operating work index Wio of an existing grinding circuit can be calculated given known mill power draw throughput feed and product size distributions
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The basic parameters used in ball mill design power calculations rod mill or any tumbling mill sizing are material to be ground characteristics Bond Work Index bulk density specific density desired mill tonnage capacity DTPH operating solids or pulp density feed size as F80 and maximum ‘chunk size’ product size as P80 and maximum and finally the type of circuit openclosed
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The SAG Power Index SPI test Starkey Dobby 1996 uses a benchscale SAG mill test to determine the specific energy of an industrial SAG mill The test is operated in closed circuit and the time required to grind the material to a P 80 of 17 mm is used to predict AGSAG
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