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
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 ...
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 .
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
grinding mill foundation design, Design Parameters Affecting Tumbling Mill Natural Frequencies. This class of mechanical systems is used to grind . Keywords: Tumbling mills, resonance, design. 1. . the foundations lose but also create a very unsafe work.
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 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.
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
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. • .
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.
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.
cement ball mill design pdf pakistan – process crusher The Zenith is the professional mining equipments manufacturer in the world, loed in China,India, how to design a ball mill foundation manufacturer in Shanghai, China. how to design a ball mill foundation is manufactured from Shanghai Xuanshi,It is the main. ball and sag mill foundation design
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);
Sep 23, 2014· Fimiston mill foundations – Mill and soil not shown for clarity. Red Dog Mine One of the more interesting projects that we have been involved with was the Red Dog Mine SAG mill foundations. The mills are supported on steel supports rather than concrete. The mills operated for many years without issue and then began to vibrate excessively.
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"
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. • .
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
The Mt Milligan Mine is located about 90 miles northwest of Prince George, British Columbia. The mine is a conventional open pit copper and gold mine and concentrator with a 62,500 tonnes per day design capacity copper flotation processing plant. It also has the largest SAG mill (40' diameter) in Canada.
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.
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
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.
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 ...
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 ...
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 ...