case study of ball mill grinding copper

  • Studies on Scale-Up of Ball Mills SpringerLink

    Data from ball mills with a wide range of diameters are analyzed using detailed mathematical/numerical models. Analysis shows the relative power inefficiency of large ball mills is due to their inefficient breakage of coarse particles. The models developed can be used to scale-up mill behavior. The behavior of large mills at Bougainville and Pinto Valley is compared.

    Chat Now
  • Constancia Copper Project Ausenco

    The project incorporates primary crushing twin SAG/Ball mill grinding circuit regrind flotation concentrate filtration and tailings pumping capacity as well as stand-alone molybdenum separation plant and various ancillary systems. The Pampacancha deposit is 5km southeast of the Constancia deposit and exhibits higher grades of copper and gold.

    Chat Now
  • A Case Study Of Cement Clinker Processing Plant

    A Case Study Of Cement Clinker Processing Plant Being one of the basic elements for setting up strong and healthy infrastructure cement plays a crucial role in economic development of any country. Having more than a hundred and fifty years history it has been used extensively in construction of anything from a small building to a mammoth

    Chat Now
  • Case study Less downtime less wasted energy less risk

    Less downtime less wasted energy less risk SKF Cooper split bearings in ball mills The problem A cement plant in southern France experienced costly ball mill downtime due to oil-lubricated trunnion bearings that needed frequent inspection and maintenance. Start-up was lengthy and complex because the correct lubricating

    Chat Now
  • Bearing Failures Case Study Allied Reliability

    The asset is a vertically-mounted belt driven grinding mill as shown in Figure 1. The drive spindle has three (3) bearings two (2) cylindrical roller bearings and one (1) ball bearing. The mill is being belt driven by a 100 hp two-pole motor. The mill normally operates at 3 150 rpm.

    Chat Now
  • VertiMill Sizing ExampleMineral Processing Metallurgy

    This was a case study for an expansion of a 2200 TPD SAG Mill operation. The client wanted to increase the plant to 2700 TPD 30um. Some plant samples were taken work indexes obtained and data simulated. As it turns out a single 3000HP Vertimill would get that done. The applications of the VERTIMILL continue to expand in number. The variety of applications being tested and operated are

    Chat Now
  • CASE STUDY PROMINENT HILLOutotec

    mill types and lining configurations for gold copper lead zinc uranium nickel diamond and cement mills. The project managers worked closely . with the client to manage the critical Installing a new shell lifter on the SAG mill using the reline machine.

    Chat Now
  • Material Handling ConsultingA-Ward ProjectsBall Mill

    A-Ward distribution partner Transmin challenged A-Ward to design and build four container unloaders that would enable a nickel mining customer to safely unload steel balls into their ball mills.A ball mill is a type of grinder that is used to grind and downsize mined materials such as copper gold iron ore and nickel.These container unloaders were required to receive full 20ft containers via

    Chat Now
  • Investigation of the laboratory conditions effects on the

    A case study Ozdogu copper-molybdenum plant Hojjat H. Gharehgheshlagh Levent Ergun it is clear that 2 minutes of first order grinding using the Bond laboratory ball mill with standard operating conditions and single size ball load of 20 mm provided the best prediction with trivial errors less than 10 for all seven tonnages of the

    Chat Now
  • Paper # 25Copper Mountain Overview on the Grinding

    The 24 x 39.5 Ball Mill The Copper Mountain ball mills are 7315 mm 24 feet in diameter and 12040 mm 39.5 feet long. They are overflow discharge ball mills with inside diameters of 7315 mm 24 feet and grinding lengths of 11887 mm 39 feet . Each Ball mill

    Chat Now
  • Investigation of the laboratory conditions effects on the

    A case study Ozdogu copper-molybdenum plant Hojjat H. Gharehgheshlagh Levent Ergun it is clear that 2 minutes of first order grinding using the Bond laboratory ball mill with standard operating conditions and single size ball load of 20 mm provided the best prediction with trivial errors less than 10 for all seven tonnages of the

    Chat Now
  • Ball Milling Glazes Bodies Engobes

    Ball Milling Glazes Bodies Engobes Description. Industries ball mill their glazes engobes and even bodies as standard practice. Yet few potters even have a ball mill or know what one is. Article. A true ball mill is a porcelain jar partly filled with spherical or rounded cylindrical porcelain balls. Industrial versions are made of metal and

    Chat Now
  • Finding failureInternational Cement Review

    In case study 2 following the change of the bearings of the grinding rolls the plant team was looking for a way to reduce the risk of bearing failure. During mill operation roller surfaces wear down which results in a higher dynamic load peaks which exceed the nominal torque and in general an instable mill operation and lower performance.

    Chat Now
  • Bearing Failures Case Study Allied Reliability

    The asset is a vertically-mounted belt driven grinding mill as shown in Figure 1. The drive spindle has three (3) bearings two (2) cylindrical roller bearings and one (1) ball bearing. The mill is being belt driven by a 100 hp two-pole motor. The mill normally operates at 3 150 rpm.

    Chat Now
  • Case StudyTelfer Gold ProjectLycopodium Limited

    A grinding facility comprising one 15MW SAG mill and one 13 MW ball mill in closed circuit with classifying cyclones for each process train Pebble stockpile and recycle crushing facility Gravity gold concentration via Falcon centrifugal concentrators Two-stage flash flotation circuit

    Chat Now
  • Material Handling ConsultingA-Ward ProjectsBall Mill

    A-Ward distribution partner Transmin challenged A-Ward to design and build four container unloaders that would enable a nickel mining customer to safely unload steel balls into their ball mills.A ball mill is a type of grinder that is used to grind and downsize mined materials such as copper gold iron ore and nickel.These container unloaders were required to receive full 20ft containers via

    Chat Now
  • HD Technologies Case Study

    The working principle of the ball mill is as follows. In a continuously operating ball mill the feed material (copper ore) passes through the central hole of one of the caps into the drum where it is exposed to the grinding media. The grinding of the material occurs during impact with the falling grinding balls and abrasion of the particles

    Chat Now
  • ball mill ArchivesInternational Mining

    Zijin Mining Group has chosen an FL gyratory crusher SAG mill and ball mill for the Majdanpek mine part of the Chinese mining company s majority owned Zijin Bor copper mine in Serbia. The delivery of the equipment to Majdanpek 180 km from Belgrade is expected to occur between 12 and 18 months from now with the project estimated to

    Chat Now
  • COMMINUTION MODELING OF PRIMARY BALL MILLS OF

    COMMINUTION MODELING OF PRIMARY BALL MILLS OF MIDUK COPPER MINE USING MATLAB SOFTWARE S H Shahcheraghi. 1 M R Tavakoli Mohammadi. 2 H Sabeti. 3 S Javanshir. 4 and S M Hosseini. 5. ABSTRACT . Grinding is one of the most important and expensive steps in mineral processing allocating about 70 of the total energy in the plants.

    Chat Now
  • ball mill ArchivesInternational Mining

    Zijin Mining Group has chosen an FL gyratory crusher SAG mill and ball mill for the Majdanpek mine part of the Chinese mining company s majority owned Zijin Bor copper mine in Serbia. The delivery of the equipment to Majdanpek 180 km from Belgrade is expected to occur between 12 and 18 months from now with the project estimated to

    Chat Now
  • Modeling of the planetary ball-milling process The case

    Among high-energy ball mills the planetary is a mechanically simple and versatile device for efficient grinding. It is usually made of two or more jars rotating at an angular velocity ω around their axis (see Fig. 1) installed on a disk rotating at angular velocity Ω.Grinding occurs by impact among the milling media (balls and jars) driven by centrifugal and Coriolis forces with

    Chat Now
  • Case StudiesSpecialty Products Inc.

    Case StudiesIn Depth and Project Snapshots. Copper Mine Steel and Concrete Protection. Polyshield HT PolyureaCoal Mine Steel Protection. Polyshield SS-100 PolyureaCopper Mine Concrete Tanks. Watershield III PolyureaMining Ball Mills Rehabilitation . Transportation and Automobile IndustryPolyurea Coatings PTU

    Chat Now
  • Modeling of the planetary ball-milling process The case

    Among high-energy ball mills the planetary is a mechanically simple and versatile device for efficient grinding. It is usually made of two or more jars rotating at an angular velocity ω around their axis (see Fig. 1) installed on a disk rotating at angular velocity Ω.Grinding occurs by impact among the milling media (balls and jars) driven by centrifugal and Coriolis forces with

    Chat Now
  • GRINDING TECHNOLOGY COURSEThe Cement Institute

    The purpose of the training is to Identify and understands necessary known and unknown information towards the completed cycle of the grinding system whether it is a ball mill vertical mill or crushing process. Throughout the course the lectures are supplemented with exercises and case studies allowing the participants to relate the course

    Chat Now
  • Investigation of the laboratory conditions effects on the

    A case study Ozdogu copper-molybdenum plant Hojjat H. Gharehgheshlagh Levent Ergun it is clear that 2 minutes of first order grinding using the Bond laboratory ball mill with standard operating conditions and single size ball load of 20 mm provided the best prediction with trivial errors less than 10 for all seven tonnages of the

    Chat Now
  • Making remote mines and low ore grades economical and

    Both ring-geared mill drives and GMDs can be employed to drive autogenous semi-autogenous (SAG) and/or ball mills. The applications may be the same but the challenge now is to develop bigger drivetrains with the power to drive these larger grinding mills

    Chat Now
  • Load Behavior Prediction in a Tumbling Mill Scientific

    mportance of the SAG (Semi Autogenous Grinding) mills for the mineral complexes persuades many researchers to study the behavior of these huge equipments. Laboratory mills and the DEM (Discrete element method) software are the prevalent and reliable methods of modeling the mill behaviors. The former is very costly and the latter not only takes the much time but also needs the very advanced

    Chat Now
  • Assessing Vertimill Ultrafine Grinding Performance The

    In this context a study was initiated to assess not only the performance of a Vertimill grinding circuit processing a copper concentrate to a particle size of 80 passing 17 µm but also to provide Taseko s New Prosperity project specific design information for grinding to particle sizes below 80

    Chat Now
  • Comparison of Enhancement of Mineral Liberation by HPGR

    In this study each of these methods was applied before ball mill grinding to investigate its effect on enhancing the liberation of copper minerals in a fine-grained low grade copper ore. The copper minerals are chalcocite bornite and chalcopyrite and their grain sizes range from 10-500 µm. The gangue minerals are calcite quartz and feldspar.

    Chat Now
  • Modeling of the planetary ball-milling process The case

    Among high-energy ball mills the planetary is a mechanically simple and versatile device for efficient grinding. It is usually made of two or more jars rotating at an angular velocity ω around their axis (see Fig. 1) installed on a disk rotating at angular velocity Ω.Grinding occurs by impact among the milling media (balls and jars) driven by centrifugal and Coriolis forces with

    Chat Now
  • case studyGE Power Conversion

    case study Robust motor solutions preferred by Chinese mining operations Due to an ever increasing global demand for copper within China and for export a leading Chinese mining company is building a huge 17 MW ball mill in Inner Mongolia with a daily capacity of 30 000 tons of ore.

    Chat Now
  • case studyGE Power Conversion

    GE Mill Drive Increase s Grupo Mexico Capacity Over the last several years there has been a growing demand for copper ore exports from Mexico. To help meet this demand Grupo Mexico in conjunction with Corporation added 6 huge 14 MW ball mills to their facility located in the Sonora state of Mexico. For these new mills the engineering

    Chat Now
  • Case StudyTelfer Gold ProjectLycopodium Limited

    A grinding facility comprising one 15MW SAG mill and one 13 MW ball mill in closed circuit with classifying cyclones for each process train Pebble stockpile and recycle crushing facility Gravity gold concentration via Falcon centrifugal concentrators Two-stage flash flotation circuit

    Chat Now
  • Case StudyGrinding Mill Bearing Failure

    Jul 31 2013 · The mill normally operates at 3 150 rpm. 1.Outboard Motor Bearing Legend 2 board Motor Bearing 3 board Mill Bearing 4.Outboard Mill Bearing Bearing that was failing. The mill rotor bearings which are mounted in a steel housing are two (2) cylindrical roller bearings NU 316 ECM/C3 and one (1) grooved ball bearing SKF 6316 C3.

    Chat Now
  • Studies on Scale-Up of Ball Mills SpringerLink

    Data from ball mills with a wide range of diameters are analyzed using detailed mathematical/numerical models. Analysis shows the relative power inefficiency of large ball mills is due to their inefficient breakage of coarse particles. The models developed can be used to scale-up mill behavior. The behavior of large mills at Bougainville and Pinto Valley is compared.

    Chat Now
  • Assessing Vertimill Ultrafine Grinding Performance The

    In this context a study was initiated to assess not only the performance of a Vertimill grinding circuit processing a copper concentrate to a particle size of 80 passing 17 µm but also to provide Taseko s New Prosperity project specific design information for grinding to particle sizes below 80

    Chat Now