Background | Starkey and Associates Inc. - SAGDesign

Background. Starkey & Associates (S&A) was established in 2000, incorporated in 2009, and is now recognized as a global leader in SAG mill grinding circuit design. In 2002, John Starkey invented the SAGDesign test. Although the foundation of the test was based on his practical engineering experience, it was in collaboration with Dawson ...

Mill (grinding) - Wikipedia

SAG is an acronym for Semi-Autogenous Grinding. SAG mills are autogenous mills but use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.

Stuart Hewer - Senior Civil Structual Design Draftsperson ...

Stuart Hewer Senior Civil Structural Design Draftsperson at Lycopodium Perth, Australia ... • 2 x SAG mill foundations GA and reinforcing drawings. • Building foundation, drive-in sumps, ring ...

Ball Mill Foundation Design Example - YouTube

Feb 18, 2019· Home ball mill foundation design. sbm company is a research and development, production, For the foundation design and . ball mills foundations design - rubygrand.ball mill foundation design ...

Design and dynamic behavior of large Ring Motors for ...

Ring Motors vary the speed of the mill by changing the sta-tor frequency. A cycloconverter provides variable frequency for start, stop and speed variation during operation. Figure 1: Ring Motor of the 38’ SAG-Mill of Rio Paracatú Mineraçao; Brazil 3 Design Verification To assure reliability of operation the mechanical design must be verified.

QdX4TM Mill Drive system - global website

SAG mill 36 ft. dual drive SAG mill 40 ft. QdX4TM Mill Drive Foundation deformation CMD test bench Condition monitoring. d4 TM Mill Drive system3 Foundation Standard design • Standard gear driven foundation loading. • Seismic loading easily calculated. • No static or dynamic modal analysis required. • No brake pier required.

Outotec Grinding technologies

Outotec Grinding technologies 005 Robust design Outotec mills are designed to produce optimal results, even in harsh environments. Outotec offers both trunnion and shell supported mill design, complemented by a drive solution tailored for optimum performance in any environment. Mill bearings The type of support bearing is selected on the basis of

SAG Mill Grinding Circuit Design

SAG MILLING IN AUSTRALIA – FOCUS ON THE FUTURE Greg S Lane Principal Process Engineer, GRD Minproc and ... Developments in SAG Mill Design and Operation Over the last few years, SAG mill manufacturing technology has advanced rapidly. ... temporary chocks installed between the stator and the foundation. A “light weight”

SAGMILLING.COM .:. Home

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

Foundation Design - Engineering Tips Web Page

Oil Tank Foundations - Boberg (3 pages, 300 KB .pdf) Don't Gamble on Machinery Foundations (2 pages, 190 KB .pdf) Principles of Foundation Design for Engines & Compressors (7 pages, 560 KB .pdf) Basic Vibration & Vibration Isolation Theory (11 pages, 550 KB .pdf) Return Home

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 ... Generally the foundation design requires more effort than the seismic design of the GMD, simply due to ... before the GMD and mill structures. Design and construction of GMDs approach to withstand harmful effects To reach a sound design ABB ...

QdX4 Mill Drive system

SAG mill 36 ft. dual drive SAG mill 40 ft. QdX4TM Mill Drive Foundation deformation CMD test bench Condition monitoring Foundation Standard design • Standard gear driven foundation loading. • Seismic loading easily calculated. • No static or dynamic modal analysis required. • …

Themes - SAG Conference

Conference Themes. The theme of the SAG 2019 Conference is about moving forward and evolving as an industry. Some would say that the Mining industry has lagged other industries when it comes to adopting new technology so how can we, as an industry, 'Move the Needle'? See All Themes

Civil and Structural Engineering and Architectural ...

Modular structures design; Primary Crusher concrete structures; Dynamic analysis of heavy equipment foundation such as turbine foundations, sag mill foundations, pump foundations; Seismic Design; Steel connection design; Substations; Conveyor galleries and material handling structures; Steel and concrete bin design

A Method of C alculating Autogenous/ Semi-Autogenous ...

SAG mills mimic the same shortcoming. It follows that in order to obtain the specifi c energy (SE) to achieve a certain transfer size, based on the 80 per cent passing value, an ineffi ciency factor must be applied to the SE of single stage ball mills, rod mills or AG/SAG mills when calculating power according to the Bond Third Theory method.

Autogenous mills, semi-autogenous mills and ball mills for ...

supported grinding mills up to the largest sizes. SAG/ball mill circuit incorporating pebble crushers and a POLYCOM® high-pressure grinding roll. SAG and ball mill for gold ore grinding. One of three SAG mills with 9.75 m diameter and 2 x 4000 kW drive power. These mills operate in conjunction with ball mills for iron ore grinding in Iran.

A Mechatronic Solution Design and Experience with Large ...

motor, mill, bearings and foundation – must be adjusted to get a sufficient safety margin against inadmissible deformation. On the other side the interacting forces between the components must be kept to a mini-mum for economic design. Incidentally, large SAG mills installed as on date are located mostly in critical seis-mic zones.

TECHNICAL NOTES 8 GRINDING R. P. King - Mineral Tech

LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp57-62. Gross power No load power Net power drawn by the charge (8.13) The net power is calculated from Net power KD2.5L e! c./ Watts (8.14) In equation 8.14, D is the diameter inside the mill liners and Le is the effective length of the mill including the ...

GEOTECHNICAL FACTORS IN SEISMIC DESIGN OF …

GEOTECHNICAL FACTORS IN SEISMIC DESIGN OF FOUNDATIONS STATE-OF-THE-ART REPORT Miguel P ROMO1, Manuel J MENDOZA 2 And Silvia R GARCÍA3 SUMMARY This paper reviews the factors that influence the behavior of foundations in seismic environments. It discusses aspects related with seismic load definition, dynamic soil properties, field and

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 time-consuming, costly and -- in some cases -- not even a hope of being accurate if you don't have appropriate geotechnical and …

Calculate and Select Ball Mill Ball Size for Optimum Grinding

In Grinding, selecting (calculate) the correct or optimum ball size that allows for the best and optimum/ideal or target grind size to be achieved by your ball mill is an important thing for a Mineral Processing Engineer AKA Metallurgist to do. Often, the ball used in ball mills is oversize “just in case”. Well, this safety factor can cost you much in recovery and/or mill liner wear and tear.

ball mill foundation design example - BINQ Mining

Dec 04, 2012· Manual design of SAG/ball/rod mill foundations – Eng-Tips Forums. Manual design of SAG/ball/rod mill foundations. thread507 …Have personally never been invovled with the design of a SAG Mill foundation, but have done a … »More detailed

Mining Structures - -iEE Structural Consultant Canada

iEE has extensive expertise in the design, detailing, and review of Mining Structures including: The Crusher building (supporting the rock breaker, crusher and conveyors); Sag Mill support foundation (massive structure to support the Sag Mills and their vibrations); Ball Mill support foundation (massive structure to support the Ball Mills);

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 size’, product size as P80 and maximum and finally the type of circuit open/closed ...

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