
Gearless Mill Drives  ABB Ltd
Antamina Compania Minera Antamina S.A. Peru Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant: Bechtel, USA Mill Builder: FFE Minerals, USA Mill Size: SAG Mill 38 feet/11,58 m Ball Mills 24 feet/7,32 m Ore processed: Copper/Zinc Drive Rating: SAG Mill 20,1 MW, 9,23 rpm Ball Mills 11,2 MW, 11,38 rpm

Design of the 40 foot SAG Mill Installed at the Cadia Gold ...
The design of the 40foot diameter SAG mill installed at the Cadia Gold Mine, New South Wales Australia, followed after two years of extensive ... size distributions and Bondtype calculations (as ...

THE OPTIMAL BALL DIAMETER IN A MILL
The optimal ball diameter in a mill 333 The grinding efficiency of the narrow particle size fractions with ball charge of various diameters has been observed through the constant of milling rate k in the equation of the grinding kinetics law for the first order grinding R=R 0

Determination of maximum span between pipe supports …
considered in its calculation is very low (15.9 Mpa). There are other references also who have listed the maximum support span. In this paper equations for calculating the maximum span using maximum bending stress are given. Safety of the design is checked using maximum deflection. A sample problem is considered for evaluation and the results

A Method to Determine the Ball Filling, in Miduk Copper ...
autogenous (SAG) Mill via an utilized method. Miduk SAG Mill circuit is shown in Figure 1. Figure 1: Diagram of Miduk Copper Complex SAG Mill Methods The following methods were utilized in this research work for ball filling calculation. To fulfill this aim, three approaches were investigated.  Surface load photograph,

Equipment Specification Sheet: SAG Mill
Equipment Specification Sheet: SAG Mill Specific Gravity 3.6 tonnes/m3 Ball Mill Work Index 11.1 metric @ P 80 88 µm Primary Grind P 80 43 µm Production Rate 181.2 tonnes/hour Rod Mill Work Index 8.6 metric Ball Mill Work Index 12.2 metric Feed to SAG Mill 80% passing 150 mm

Manual design of SAG/ball/rod mill foundations ...
Mar 14, 2007· As an engineer who has experience using FEM for the design and assessment of SAG and ball mill foundations, I know that this approach can be timeconsuming, costly and  in some cases  not even a hope of being accurate if you don't have appropriate geotechnical and …

PAI SAG Mill Training  YouTube
Jan 08, 2016· In this training module, we'll cover the workings of a semiautogenous grinding mill, or SAG mill, that's designed to be the first stage of a grinding circuit. Ore that's crushed in a primary ...

SINGLE STAGE SAG/AG MILLING DESIGN
SINGLE STAGE SAG/AG MILLING DESIGN ABSTRACT Single stage semiautogenous / autogenous (S/AG) milling has become a common design for a variety of ore types with the advantages of being comparatively low capital cost and flexible for future expansion. The single stage

Improved Relationships for Discharge in SAG/AG Mills
(SAG) mills. In order to optimize this section, the skills to accurately model and understand its underlying mechanisms are required. The literature exposed a clear lack of previous research on the influence and performance of grate/pulp lifter design in AG/SAG mill discharge. The current understanding from

mill ball size calculation  laerchenrain.it
Ball Mill Design/Power Calculation. 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 ...

GROSS POWER CALCULATOR  SMC Testing
GROSS POWER CALCULATOR General ... (slurry pool) is predicted from mill design and slurry flow data and its impact on power draw is then predicted. Slurry pooling causes the power draw in AG and SAG mills to be lower than a mill without a ... power draw of an AG/SAG mill to drop can be gauged by switching the discharge mechanism choice in

A Method of C alculating Autogenous/ SemiAutogenous ...
SAG mill energy required according to this statement, is 2.5 ... The ﬁ nal DB Consulting (DBC) AG/SAG SE calculation is based on an AG/SAG circuit without a pebble crusher. Comparisons are made between the SMC and the author's ... an inefﬁ ciency value in the region of 1.25 because the design 80 per cent passing value is not achieved. The ...

Engineering Manual  japantaylor.co.jp
the conveyor design does not allow for a proper catenary sag. A tensioner can also be used with declined conveyors, but in all other cases it is not recommend to tension the chain/belt. The tensioner roller/sprocket can be fixed on an arm or move up and down in slots in the conveyor sideplates. This will bring constant tension, independent of ...

SAG Calculator  Edmund Optics
SAG Calculator. Determine sag of a surface based on radius of curvature and diameter. Calculator can be used to provide simple mechanical parameters that simplify specification of optical components. Commonly used for lenses and mirrors.

Orway Mineral Consultants Canada Ltd. Mississauga, ON ...
OMC POWERBASED COMMINUTION CALCULATIONS FOR DESIGN, MODELLING AND CIRCUIT OPTIMIZATION P. Scinto, A. Festa, B. Putland Orway Mineral Consultants Canada Ltd. Mississauga, ON., L4W 5N5, Canada ... The laboratory benchscale SAG mill reproduces operating conditions of a commercial SAG mill,

ROCKY DEM  SAG Mill Simulation  YouTube
Mar 03, 2016· ROCKY 3D DEM simulations of grinding media flow can be used to investigate the relative performance of comminution devices.

SAG Mill Grinding Circuit Design
Sagmilling.com is home to a collection of both free and subscriptionbased calculation tools to aid metallurgical process engineers perform comminution calculations. Grinding circuit design tools, including for SAG millball mill circuits, and geometallurgy energy models are available to subscribers.

Mill sizing method
Please find below two calculators for sizing mills using the Bond and Rowland methods: Ball mill sizing: Calculator for ball mill(s) in a single stage circuit. Rod ball mill sizing: Calculator for rod mill(s) as first stage of the circuit and ball mill(s) as second stage of the circuit.

Modelling SAG milling power and specific energy ...
Modelling SAG milling power and speciﬁc energy consumption including the feed percentage of intermediate size particles M. Silva, A. Casali⇑ Mining Engineering Department, Universidad de Chile, Beauchef 850, Santiago 8370448, Chile

Used SAG Mills for Sale  EquipmentMine
UNUSED 36' X 23' AG Mill w/1500 KW Motor and 22' X 41' Regrind Ball Mill 13,405 HP Total Power, UNUSED FL 40' x 25' Gearless SAG Mill, and 26' x 40'6" Ball Mills, BOLIDENALLIS CHALMERS 7.3m X 2.74m SAG Mill, 9.6' X 19.4' EGL Wet Overflow Regrind Ball Mill,

O. I. SKARIN N. O. TIKHONOV CALCULATION OF THE …
CALCULATION OF THE REQUIRED SEMIAUTOGENOUS MILL POWER BASED ON THE BOND WORK INDEXES O. I. SKARIN, Senior Researcher, ... the existing techniques of sizing SAG mill power, Bond work indexes and their applicability to calculating autogenous/semiau ... design and optimization of crushing and grinding circuits [6].

OUTOTEC GRINDING TECHNOLOGIES
Advanced mill design analysis Outotec mills are designed using the latest 3D computeraided design (CAD) and drafting techniques. Designs are fully verified with the latest finite element analysis (FEA) tools and techniques to predict peak stress levels in the mill structure and the ultimate life of the mill's structural elements.

HOW TO ENSURE SEISMIC REQUIREMENTS FOR SAG AND …
HOW TO ENSURE SEISMIC REQUIREMENTS FOR SAG AND BALL MILLS Dr. Axel Fuerst, ABB Switzerland, Baden, CH ... earthquake with 6.6 Richter in Japan in March 2011, have ... before the GMD and mill structures. Design and construction of GMDs approach to

DESIGN RECOMMENDATION FOR STORAGE TANKS AND …
It is envisaged by publishing the English version of "Design Recommendation for Storage Tanks and Their Supports" that the above unique design recommendation will be promoted to the overseas countries who are concerned on the design of storage tanks and the activities of the Architectural Institute of Japan will be introduced them too.