Reducing Grinding Energy and Cost - Magnetite Iron Ore Design Case Study A. Jankovic and W. Valery Process Technology & Innovation, PO Box 1028, Eagle Farm Qld, 4009, Australia ABSTRACT:Efficiency of the comminution operations is traditionally assessed based on operating cost and energy consumption.
To operate viably and sustainably, there is a need to reduce costs and energy consumption, particularly of the energy-intensive grinding required for low-grade magnetite deposits. This chapter reviews current iron ore comminution and classification technologies and presents some examples of flowsheets from existing operations.
Abstract: High-voltage electrical pulses (HVEP) technology was applied in grinding of a magnetite ore as a comminution pretreatment. The effect of HVEP pretreatment on grindability, liberation and separation performance of a magnetite ore was investigated by a systematic experimental study.
Relationships between comminution energy and product size for a magnetite ore  where E is the net specific energy; x f and x p are the feed and product size indices, respectively, and K3 is a constant. Hukki (1962) evaluated these energy-size relationships
Both technologies are already implemented in some magnetite processing operations, although in limited capacity. The results of a theoretical option study for high capacity processing of a hard, fine-grained silica-rich magnetite ore is presented in this paper, with the emphasis on comminution circuit options.
The Coalition for Energy Efficient Comminution (CEEC) has been established and is supported by a broad range of mining sector companies keen to accelerate awareness, knowledge transfer and, by implication, improve energy and cost outcomes in the substantive area of comminution.
Electric Impulse Comminution. In case of the Kiruna ore there was the possibility to take samples of the concentration plant KA1 in Kiruna, while the same fed material was ground, as used for the tests with the vertical-roller-mill. 䬀䄀 ...
Mineral processing, art of treating crude ores and mineral products in order to separate the valuable minerals from the waste rock, or gangue. It is the first process that most ores undergo after mining in order to provide a more concentrated material for the procedures of extractive metallurgy.
Standard drop weight, SMC, and Bond ball work index tests have been conducted to investigate the comminution circuit of a magnetite ore loed in Eastern Hebei, China. In addition, simulations based on JKSimMet and Morrell models have been performed to compare the specific energy consumption of various comminution circuits.
Standard drop weight, SMC, and Bond ball work index tests have been conducted to investigate the comminution circuit of a magnetite ore located in Eastern Hebei, China. In addition, simulations based on JKSimMet and Morrell models have been performed to compare the specific energy consumption of various comminution circuits. According to the desired capacity and the ore communition ...
Magnetite ore and processing. A general processing circuit for magnetite ore is initial crushing and screening of run of mine (ROM) ore to <6 mm. The ore is then milled to a specified grind size to liberate the iron minerals from the gangue, then processed further to produce a magnetite concentrate, commonly by a wet magnetic separation process.
Metallurgical Testing of Iron Ore from the Labrador Trough Michel Brissette & Hugh de Souza ... Measures the magnetite content of iron ore sample from the magnetic susceptibility of the sample ... Comminution Flotation Gravity Magnetic Physical Separation Magnetic Pilot Plant Bulk/ROM Samples
Comminution may be carried out on either dry materials or slurries. Crushing and grinding are the two primary comminution processes. Crushing is normally carried out on "run-of-mine" ore, while grinding (normally carried out after crushing) may be conducted on dry or slurried material. In comminution, the size reduction of particles is done by ...
This trend indicates a Figure 10—Rittinger model fit—non-magnetic fraction The Journal of The Southern African Institute of Mining and Metallurgy VOLUME 110 NON-REFEREED PAPER MARCH 2010 145 Relationships between comminution energy and product size for a magnetite ore magnetic concentrate is required.
Iron formation consists of iron ore such as siderite, magnetite, and hematite, with silica in the form of chert, jasper, etc., generally in bands, but sometimes not distinctly so. The bands of iron ore are at times high-grade, but are often mixed with a good deal of silica, the whole making an ore too lean for use without concentration.
The chemical composition and iron mineral phase composition of the ore are presented in Tables 1 and 2, respectively. The assay results show that the ore sample is composed of 27.02 wt.% of total iron (TFe), which mainly exists in the form of hematite and magnetite, 57.64 wt.% of SiO 2, and other components in trace amounts. Table 1.
- Test methods for characterizing ore comminution behavior in geometallurgy - 2 1. Introduction Comminution is usually the first stage in mineral processing plants. Normally the comminution circuit includes several stages starting with crushing and followed by grinding (Figure 1). Primary crushing is often done close to the mining area, e.g.
magnetic separation, thickening, leaching, electro-winning, solvent extraction, waste ... ore be chalcopyrite, which is one of the most popular copper minerals found in copper ores in our planet. ... Mineral Comminution and Separation Systems - Toshio Inoue
Fine and Coarse Iron Ore Beneficiation – An Evaluation into Global Technologies and Techniques L M van Niekerk1 1. Senior Process Engineer, DRA Pacific, PO Box 1283, West Perth WA 6005. Email: [email protected] ABSTRACT The mining of iron ore is a high volume low margin business because the value of this commodity is
Feb 24, 2015· A significant fraction of iron ore used in steel production comes from magnetite deposits. Magnetite iron ore requires significant beneficiation, which typically involves grinding to a particle size where magnetite is liberated from its silicate matrix. And grinding consumes a lot of energy. This article investigates eco-efficient alternatives for the process design for magnetite iron ore.
implemented in some magnetite processing operations, although in limited capacity. The results of a theoretical option study for high capacity processing of a hard, fine-grained silica-rich magnetite ore is presented in this paper, with the emphasis on comminution circuit options. Several circuit options are …
minerals Article Study on the Selection of Comminution Circuits for a Magnetite Ore in Eastern Hebei, China Guangquan Liang 1,2,*, Dezhou Wei 1,*, Xinyang Xu 1, Xiwen Xia 2 and Yubiao Li 3,* 1 College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; [email protected]
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