SAG mill liner development draws primarily on practical experience from SAG milling operations supported by computer-based modeling of charge motion in SAG mills and on established good design practice. Liner design needs to respond to the process aspects of mill liner action that are critical to good SAG mill performance, i.e., the impact of shell liners on the …

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PARAMETER OPTIMIZATION OF LARGE SAG MILL LINER BASED ON DEM AND KRIGING Journal of Mining Science ( IF 0.456) Pub Date :, DOI: 10.1134/s1062739121010051 Ruihua Jiang, Guoqiang Wang, Jingxi Li, …

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For design purposes, you need an estimation or prediction of your SAG Mill's tonnage; well, there are 3 ways to generate good rock "ore" hardness testing data for SAG and ball mill circuit grindability from half drill core. We can …

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In this work, several standard tools such as Simulink ® /Simulink ®, OPC toolbox, RSLogix 5000, and FactoryTalk ® are integrated to simulate a control strategy for a SAG mill designed to keep the mill operating in the stable region by manipulating the fresh ore feed. The implementation of this strategy is based on standard control blocks ...

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Since there are not that many small SAG mill operations of under 2000 TPD, and most sub-2000 TPD mills are built with rod mills and/or ball mills only; the upstream crusher plant needs to have sufficient crushing power to …

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The SAG mill reject sample was firstly crushed to below 2 mm by laboratory roll and gyradisc crushers. For each flotation test, 650 g was ground to 80% passing 74 µm in a laboratory stainless steel ball mill with 9 mm steel balls at a pulp density of 67% (w/v). The mill discharge was then transferred to a 2.5 L Denver flotation cell at

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At and after SAG (2011) (SAG, 2011), Morrison et al. (2011) and Delaney et al. (2013) extended this work by exploring the accuracy of the breakage …

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Parameters, Particulate Science and Technology, 3, 1. 7. ... The SAG mill discharge grate parameters: pebble port size and relative open area fraction of …

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The SAG mill process uses steel balls and large rocks for grinding, with a minimal ball charge of 6% to 15%. The mill is large in diameter but short in length and rotates tumbling contents to produce a breaking action. The load consists of dry ore, steel balls and water, which account for 30% of the volume. ...

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mill trunnions provides a very low cost solution for variable speed mill operation. Since the mill and its power unit are supplied as a module, the mill can be supplied, erected and commissioned very quickly without the need for highly skilled technicians. Outside of traditional hard rock mines, these mills offer an attractive, economic alternative

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Abstract. In mining, the detection of overload conditions in SAG mills is of great relevance to guarantee their operational continuity due to their economic and environmental impact. Various authors have tried to use Machine Learning techniques to identify the relationship between the variables and the underlying overload phenomenon.

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@article{osti_969329, title = {Online SAG Mill Pluse Measurement and Optimization}, author = {Rajamani, Raj and Delgadillo, Jose and Duriseti, Vishal}, abstractNote = {The grinding efficiency of semi autogenous milling or ball milling depends on the tumbling motion of the total charge within the mill. Utilization of this tumbling motion for efficient breakage of particles …

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Mill drive arrangement. Mill drives are generally located on the outside of the mill to facilitate maintenance. • Mill discharge arrangement. If the SAG and ball mills feed separate pump systems this is not an issue. If the two stages feed the same pump system, the SAG mill usually drives the discharge arrangement.

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This research studies the application of the discrete element method in the kinematics and dynamics of the flux of material and milling methods occurring inside a SAG mill of 40′ × 26′, working on normal operation conditions with a capacity of 120.000 ton/day. It is used a feeding granularity F80 of 150 mm at a critical speed rate of 72 %.

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Corpus ID: 166222848; Evolution of SAG Mill Process Control at the Xstrata Nickel Raglan Operation @inproceedings{Bartsch2008EvolutionOS, title={Evolution of SAG Mill Process Control at the Xstrata Nickel Raglan Operation}, author={Erika Bartsch and Chief Engineer and G Comeau and Senior Metallurgist and Colin Hardie and Former Chief Metallurgist}, year={2008} }

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PDF | On Jan 1, 2001, J.J. Campbell and others published SAG mill monitoring using surface vibrations | Find, read and cite all the research you need on ResearchGate

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The SAG mills have been mostly used for milling hard gold and copper ores with quartz, ultramafic or green stone as host rocks. The Bond work index of these ores ranges between 12 and 14 kWh/t. Subsequently, SAG mill application has been extended to softer ores, such as bauxite and clayey hard-capped gold ores.

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A view of the SAG Mill and Ball Mill at Agnico Eagle's Meadowbank mine in Nunavut, in this June 28, 2011 file photograph. At the rim of the Arctic Circle in Canada, gold mining firm Agnico-Eagle is learning how tough it is to operate in a remote region with temptingly large, but frustratingly inaccessible, reserves of oil, gas and minerals.

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To predict the power of the SAG mill, Hoseinian et al. proposed an analytical model based on gene expression programming. To develop their model, they employed several tests by varying the SAG mill parameters such as the moisture of charge, mass flow rate, cell weight of mill load, solid percentage and inlet and outlet water to the SAG mill.

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2.4. Multivariable predictive control. In the present work, a three-input-three-output scheme of control was performed. The total water feed to the mill (the feed water flow rate was added to the dilution water flow rate, so they could be specified separately, but for the SAG mill model, the total water content was the variable of interest), the fresh ore feed rate, and the mill …

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When the feed size of a SAG mill becomes coarser, i.e. α r increases, the energy required to break the ore increases, i.e. φ r and φ f increases (Morrell et al., 1996; Morrell and Valery, 2001 ...

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