Orway Mineral Consultants provide metallurgical consulting services around the world, see our current projects from around the globe. For more information contact us.

Let me then have a look at your grinding circuit to identify potential areas for improvement. ... In 2018, the two SAG mills at Ok Tedi copper and gold mine in Papua New Guinea will be equipped with new drive train infrastructure. Also part of the delivery scope: a cloud-based condition-monitoring system combined with remote access as well as ...

Grinding Circuit-Provide technical assists in running the circuit, determining optimal operational parameter to maintain mill through put. Gravity-Provide technical information to operator to run the circuit in troubleshooting and monitoring. Competently operating Falcon concentrator and Intensive Leach Reactor (ILR).

Grinding Circuit . The grinding circuit consists of a conventional SAB circuit with a 7.93m x 3.73 m 3,356 kW SAG mill and a 5.49 m x 8.84 m 4,474 kW ball mill in closed circuit with 6 hydrocyclones (4 operating and 2 on standby). SAG mill throughput typically ranges from 473 - 515 tph depending on the ore type being processed.

Abstract In 2009, the survey of Wei and Craig reported qualitatively on the benefits of process control systems in grinding and flotation. The present review of about twenty milling operations reports quantitatively on these benefits. Expert systems, model predictive controller, and fuzzy logic control systems, to name only the most used in the mining industry, have delivered …

Belt Conveyors. Resource Constructions has over many years participated in the design and construction of numerous belt conveyors, primarily for the Mining and Quarry industries. Engineering design, 3D modeling, Detail Drawings, manufacture and erection are all capabilities that can be provided to a project or plant upgrade.

With customer needs and operational risk at the core of design, the grinding mills, engineered mill liners, and robust trommels ensure the highest availability. The extensive product support and optimization sevices help in maximizing the efficiency of your grinding mill, grinding circuit or entire grinding process.

At Ok Tedi, the introduction in 1999 of a MET expert system for SAG milling resulted in significant improvement in circuit throughput. Yet, with the additional inclusion of an accurate model of the process there was still more . that could be achieved. Hence, in 2002 a MET Neural Network model was developed and deployed to enhance

2016 1 4 mineral in mill feed and various flotation streams at Ok Tedi enables an understanding of the quantitative response of fluorine bearing minerals to flotation The metallurgical behaviour of fluorine in the flotation process is also discussed INTRODUCTION Ok Tedi Mining Limited OTML mines and concentrates 600. Get Price

In order to provide a simply constructed closed-circuit grinding plant characterised as a whole by a low specific energy requirement, with a material-bed comminuting high-pressure roller press and with a sifter, the closed-circuit grinding plant being intended to make do without its own separately driven disagglomerator, hitherto considered necessary, for the disagglomeration of …

The excavated rock is then crushed into 200 mm pieces by gyratory crushers, then ground into sand on a grinding circuit including "semi-autogenous grinding mills and ball mills" ("OK Tedi Mine, Oceania, Papua New Guinea"). The ore is then placed in flotation cells with reagents that create air bubbles that separate the copper and gold from ...

Papers in collection. Trial of 14/12 millMAX TM Pump in the Ok Tedi Grinding Circuit Go to Paper; The Operation and Interaction of Grates and Pulp Lifters in Autogenous and Semi-Autogenous Mills Go to Paper; Recent Grinding Practice in the Copper Concentrator of Mount Isa Mines Limited Go to Paper; Evaluation of a Laser Online Ore Sizer at the WMC Leinster …

recycle crusher. In order to achieve significant throughput increases, the overall power available in the circuit would need to be increased substantially, by way of more grinding power. Case Study – Ok Tedi Kambalda Mill Survey Project Category: Recycle Crushing Study Client: Ok Tedi Mining Ltd Location: Western Province, Papua New Guinea

At Ok Tedi, ore type and SAG feed size distribution vary widely and frequently. ... Grinding circuit must provide stable particle size distribution and should also operate in …

Evaluation of Hydrocyclone in the Ok Tedi Grinding Circuit. Ok Tedi Mining Limited has recently completed the first phase of a trial to compare the performance of D26B Krebs cyclones in different configurations to the new 650 mm cyclones. From 1992, rougher flotation feed size has increased from the target d80 grind size of ...

Ok Tedi Mining Limited (OTML) operates a large scale copper and gold mining and processing facility in the Western Province of Papua New Guinea. Ore won from the open pit mine at an annual rate of 24 million tonnes feeds a processing facility consisting of a gyratory primary crusher, two parallel grinding modules, flotation and gravity ...

The Mineral Processing Flowsheets shown on the following pages are based on actual data obtained from successful operating plants. Metallurgical data are shown in these flowsheets which incorporate Crushers, Grinding Mills, Flotation Machines, Unit Flotation Cells, and Selective Mineral Jigs as well as other standard milling equipment. The Flotation Machine, …

Perry, R., 1997, "Ok Tedi Mining Limited Grinding Circuit and Grinding Circuit Control Audit Interim Report," Brenda Process Technology (Svedala Industries Canada Inc.) Ref. Project 502, Tabubil, PNG, April. Google Scholar Download references

Whereas Wei and Craig (2009) identified the users of grinding control systems and cited the qualitative benefits of such systems, the present article goes one step further, compiling quantitative data for such benefits. It is the first time that a compilation of this sort is made. Metallurgists and process engineers interested in implementing control systems will find …

In the figure below, the range of expected throughput for different ore types are plotted for a fixed grinding circuit; each ore type can process between 80% and 120% of the design throughput. An alternate power model was used to estimate mill throughput using the same mill sizes. In this case, a greater variation in throughput was predicted ...

Search the world's most comprehensive index of full-text books. My library

Cyclone Efficiency and Grinding Behaviour of Gold. Previous studies of the behaviour of gold in grinding circuits have shown that cyclones are very effective at retaining gravity recoverable gold within the grinding circuit resulting in high circulating loads of …

The small particle size presents problems as with any other mineral resulting in slow flotation rates. Flotation recoveries of free gold have improved dramatically with the installation of the Skim Air flotation cells in the grinding circuit [85,86,87]. Some modifications have had to be made to circuits where viscosity is a problem.

Ok Tedi Mining Limited Nov 2018 - Sep 2020 1 year 11 months. Papua New Guinea Senior Consulting Metallurgist ... • Implemented routine size measurement and field surveys to optimise fine grinding circuit operation. Show more Show less Technical Expert - Crushing PT Freeport Indonesia ...

Ok Tedi Mining Limited (OTML) operates the Ok Tedi Mine, the longest running open-pit copper, gold and silver mine in Papua New Guinea. Our registered office is located in Tabubil, Western Province, PNG. We also have a representative office in Port Moresby, PNG and a logistics facility in Brisbane, Australia.

The present invention discloses an advantageous and effective process for the concentration of iron ores, which can be fully dry or mixed, part of the process being dry, part wet, such enhancing the process efficiency as a whole by increasing recovery of concentrators and increasing the useful life of the mines.

The calibrated model was used to evaluate expansion strategies to sustain throughput at higher proportions of fresh ore based on the proposed life-of-mine schedule.The second example is the Ok Tedi Copper-Gold Mine in Papua New Guinea operating a SAG and ball milling circuit (SAB).

The OK Tedi Mine is an open cut copper operation located in Papua New Guinea, close to the headwaters of the OK Tedi River. Discovered in 1968, the mine is operated by Ok Tedi Mining Limited (OTML), a wholly owned company of the mine owner Papua New Guinea Sustainable Development Program Limited (PNGSDPL). ... The grinding circuit, equipped ...

This controller was installed, tested and verified in a copper grinding circuit. Results showed 1.8 % increase in mill throughput, 3 % decrease in power draw and more stable feeding regime at the ...

The practice of the flotation of pure gold and gold-bearing ores such as tellurides, aurostibite, kerogen, pyrite, pyrrhotite, copper-gold ores and mixed sulphides is reviewed. The factors which influence the choice of collectors, pH and Eh, are discussed as well as the application of differential flotation.