(2012). Analysis of Wet High-Intensity Magnetic Separation of Low-Grade Indian Iron Ore using Statistical Technique. Separation Science and Technology: Vol. 47, No. 8, …
The main process variables such as particle size of ore, ore to coal consumption ratio, reduction temperature and retention time were investigated to determine the extent of magnetizing reduction. In second step, reduced iron ore was subjected …
Typical flow sheets for iron ore separation9.4.1. Major principles for selection of separation methods. For low-grade iron ore separation, it is very important to develop an optimized flow sheet to achieve the best iron concentrate grade and iron recovery while keeping the cost as low as possible. The major principles are as follows: 1.
3.2. Effect of Iron Ore Particle Size on the Reduction-magnetic Separation. Studies on the effects of the iron ore particle size were conducted on composite briquettes with –1 mm coal particle at the temperature of 1200°C, the results are shown in Fig. 1 as a function of roasted time.
magnetic particle separation of ores nijmegenfotograaf magnetic separation of iron ores seadoone particle size for magnetic separation for iron ore This chapter introduces the principle of how lowgrade iron ores are upgraded to highquality iron ore concentrates by magnetic separation Magnetite is the mos Magnetite is the mos Get More ...
The prepared magnetic iron concentrate sample of <0.038 mm particle size was further ground using an agate mortar to obtain a powder of particle size <5 m that was subjected to zeta potential measurement. In the test, 0.02 g of the ore sample was placed in a beaker, followed by addition of 40 mL
1、Single magnetite. The composition of single magnetic iron ore is simple, magnetic strong, easy to wear and separation, so weak magnetic separation method is often used. ·When the grinding size is greater than 0.2mm, most iron ore magnetic separation plants usually adopt a grinding - magnetic separation. ·When the grinding particle size is ...
This work presents a semi-smelting reduction and magnetic separation process for the recovery of iron and alumina slag from iron rich bauxite ore. The effect of the process parameters on the recovery rate of iron, maximum particle size of the iron
The threshold particle size for magnetic separation was varied between 0.3 to 2 mm to determine the appropriate particle size for magnetic separation. Although a smaller particle size generally improves the degree of liberation, excessively fine particles can deteriorate the separation efficiency in magnetic separation.
The effect of particle size and magnetic susceptibility on wet high intensity magnetic separation was studied simultaneously. ... A typical high …
Magnetic separation is typically used in the beneficiation of high grade iron ores where the dominant iron minerals are ferro and paramagnetic [1,5]. Wet and dry low-intensity magnetic separation (LIMS) techniques are us ed to process ores with strong magnetic properties such as magnetite while wet high-intensity
different particle size ranges for the single-factor magnetic separation experiments. It was determined that the optimum value ranges for the particle size, magnetic separation distance and rotating frequency were 0.15 mm-0.3 mm, 10 mm-12 mm, 40 Hz ～ 60Hz, respectively; using the chosen parameter values of 0.2mm, 11mm, and
Effective Processing of Specularite Ore by Wet Magnetic Separation . During the magnetic separation process, particle size was -2000 µm and magnetic field applied at 0.25 T and 0.85 T which were performed at a solid-liquid ratio of 10% and 20% by weight, respectively. Get Price
by the fact that on reducing the size by <50 mk, the magnetic susceptibility of magnetite particles sharply decreases and becomes comparable or less than that of aggregates of magnetite and rock-forming minerals. That is why beneficiation of iron ore follows complex route of crushing, grinding, classification, magnetic separation, flotation and
The magnetic susceptibility varies inversely as the square of the magnetic pole strength. Thus, doubling the magnetic field will allow the separation of a mineral particle with one fourth the magnetic susceptibility. A relation between vx and m can be obtained under two limiting conditions: Condition 1
This study presents a process with coal-based direct reduction of high-phosphorus oolitic hematite before magnetic separation for producing direct reduction iron (DRI), where Ca(OH) 2 and Na 2 CO 3 were used as additives in order to inhibit the reduction of fluorapatite and promote the reduction of hematite. The effects of particle sizes of iron ore and coal on the strength and …
Application of magnetic separation Wet drum magnetic separation is suitable for wet magnetic separation of magnetite, pyrrhotite, roasting ore, ilmenite and other materials with a particle size of 3mm or less. It is also used for iron removal of coal, non-metallic minerals, building materials, etc. 1. Simple structure 2. Big capacity 3.
such as particle size of ore, ore to coal consumption ratio, reduction temperature and retention time were investigated to determine the extent of magnetizing reduction. In second step, reduced iron ore was subjected to low intensity magnetic separation to recover iron values in the magnetic concentrate.
This shows that under the same grinding particle size, the combined process of flotation and magnetic separation can obtain iron concentrates with low sulfide content and sulfide concentrates with high recovery rate. Second, Weakly magnetic iron ore . 1.Single weakly magnetic iron ore
Silica and 2% alumina. Irrespective of the quality of the iron ore slimes, it important to consider that a significant scope for its enrichment following advanced gravity, magnetic and flotation based separation techniques because of the fact that the material is already in 'Prepared Stage' which require no size reduction operation.
Flotation is more to separate fine to particulate magnetic iron ore (particle size <0.02 mm). Gravity separation and magnetic separation are mainly used to separate coarse-grained and medium-grained weakly magnetic iron ore (20~2 mm). During gravity separation, heavy medium or jigging methods are commonly used for the gravity separation of ...
where, is the fluid viscosity, dp is the particle size and vp is the particle velocity relative to the fluid. Fig. 8.2. Schematic diagram of magnetic separation Magnetic particles will be separated from nonmagnetic (or more magnetic particles from less magnetic particles), if the following conditions are met: F:ag > Fc and Frag > E Fcnonnug
Liaoning province of China. Its detailed particle size distribution is presented in Fig. 2 with an average particle size of d(0.5)=82.61 μm, and its chemical compositions are listed in Table 2. Fig. 3 shows the XRD pattern of iron ore powder, indicating that it is mainly composed of hematite, quartz and a small amount of magnetite.