Beneficiation Process Optimization Study on a Low-Grade Hematite Ore

2013 ◽  
Vol 303-306 ◽  
pp. 2461-2464
Author(s):  
Wei Zhi Wang ◽  
Qing Mei Jia ◽  
Chun Guang Yang
Keyword(s):  
Process Optimization ◽  
High Intensity ◽  
Iron Ore ◽  
Low Grade ◽  
Iron Recovery ◽  
Magnetic Separator ◽  
Iron Concentrate ◽  
Second Stage ◽  
Optimization Study ◽  
Hematite Ore

A hematite has low grade, fine disseminated size andcomplex disseminated relations, which are refractory iron ore. Using SLon pulsating high gradient magnetic separator, induction intensity 8500Oe, pulsating 20mm stroke, stroke of 120 beats / min), a crude iron ore concentrates a grade of 35.93.%, the recovery rate of 82.39% is obtained through high intensity magnetic separation.( The final iron concentrate with TFe grade of 64.83%,yield of 14.55% and iron recovery of 35.74% from the raw ores with TFe grade of 26.29％ was obtained, with the first stage grinding size being 50% -0.074mm and the second stage,95% -0.074mm.

Experimental Research on the Iron Separation from an Ultra Poor Iron Ore

2012 ◽  
Vol 535-537 ◽  
pp. 746-749
Author(s):  
Wei Zhi Wang ◽  
Li Ping Chen ◽  
Chun Guang Yang
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Low Grade ◽  
Iron Recovery ◽  
Magnetic Separator ◽  
Iron Concentrate ◽  
Second Stage ◽  
Low Intensity ◽  
Two Stages ◽  
Titanium Magnetite

Test was made on separating iron from a ultra-low-grade vanadium titanium magnetite ore by a process of tailing discarding at a coarser size，staged grinding and staged low intensity magnetic separation. The results show that when the raw ore is treated by permanent dry magnetic separator with low intensity magnetic separation at 12～0 mm size，qualified tailings of about 20% yield can be discarded．The coarse concentrate is grounded in two stages. With the first stage grinding size being 45% -200 mesh and the second stage，75% -200 mesh，and then treated by two stage low intensity magnetic separation．As a result，an iron concentrate with a TFe grade of 65.80%and an iron recovery of 47.74%can be achieved．

Mineral Processing Technology Study on a Lean Hematite Ore with Finely-Disseminated Minerals

2013 ◽  
Vol 303-306 ◽  
pp. 2473-2476
Author(s):  
Wei Zhi Wang ◽  
Li Hui Zhou ◽  
Chun Guang Yang
Keyword(s):  
Mineral Processing ◽  
Low Grade ◽  
Iron Recovery ◽  
Technology Study ◽  
Complex Composition ◽  
Flotation Process ◽  
Iron Concentrate ◽  
Second Stage ◽  
Fine Grain ◽  
Hematite Ore

The mineral processing experimental research was carried out on the hematite bearing characteristics of low grade, fine grain,complex composition. The results showed that using the technological flowsheet of “stage grinding- low intensity magnetic separation”, the iron concentrate with recovery of 36.56% and grade of 65.85% Fe can be obtained. And the iron concentrate with recovery of 17.23% and grade of 63.53% Fe can be obtained by “stage grinding-HIMS process-reverse flotation” process. The final iron concentrate with TFe grade of 65.10%,yield of 19.19% and total iron recovery of 53.79% from the raw ores with TFe grade of 23.41％ was obtained, with the first stage grinding size being 55% -0.074mm and the second stage,93% -0.074mm.

Experimental Research on High Intensity Magnetic Separation - Reverse Flotation of a Low-Grade Specularite Ore

2011 ◽  
Vol 304 ◽  
pp. 391-394
Author(s):  
Wei Zhi Wang ◽  
Jin Rui Zhang ◽  
Chun Guang Yang
Keyword(s):  
Experimental Research ◽  
High Intensity ◽  
Iron Ore ◽  
Low Grade ◽  
Grinding Process ◽  
Reverse Flotation ◽  
Magnetic Separator ◽  
Total Recovery ◽  
Iron Concentrate ◽  
Iron Grade

An iron ore contains specularite and hematite which are its main iron minerals and carbonates such as calcite which are its main gangue minerals. The ore is very apt to produce slime in the grinding process，leading to a deteriorated beneficiability. The rough iron concentrate can be obtained by using high gradient magnetic separator to discard tailings with the grinding fineness of 95% -0.074mm. Then the rough concentrate is treated by reverse flotation to produce a final concentrate with the operation recovery of 66.49% and the iron grade of 66.12%,and the total recovery of iron could reach58.70%.

Iron Recovery from Hematite Tailings by a Novel HGMS-Centrifuge Process

2014 ◽  
Vol 1010-1012 ◽  
pp. 1585-1589 ◽  
Author(s):  
Hui Fen Zhang ◽  
Lu Zheng Chen
Keyword(s):  
Fine Particle ◽  
Size Range ◽  
Low Grade ◽  
High Grade ◽  
Iron Ores ◽  
Iron Recovery ◽  
Particle Size Range ◽  
Magnetic Separator ◽  
Iron Concentrate ◽  
Fine Particle Size

During the processing of iron ores, a large quantity of low-grade tailings containing abundant iron values in fine particle size range is produced. A novel HGMS-Centrifuge process is proposed to recover iron values from a low-grade hematite tailings. In this process, the tailings is effectively roughed with pulsating high pulsating high gradient magnetic separator to produce a relatively high-grade iron concentrate, then this concentrate is cleaned with a continuous centrifugal concentrator to produce a high-grade iron concentrate. The results of investigation indicate that this novel process is capable of producing an iron concentrate assaying 58.48% Fe with 21.66% recovery from the tailings assaying 28.12 % Fe. It was concluded that this novel process may be effectively used to recover iron values from low-grade hematite tailings.

Study on Process Concentrating of a Certain Low Grade Hematite Ore in Hebei

2013 ◽  
Vol 295-298 ◽  
pp. 3080-3084
Author(s):  
Su Juan Yuan ◽  
Zhi Yong Shen ◽  
Da Yong Zhang
Keyword(s):  
Magnetic Separation ◽  
High Intensity ◽  
Low Grade ◽  
Reverse Flotation ◽  
Test Results ◽  
Iron Concentrate ◽  
Low Intensity ◽  
Hematite Ore

It was determined through a large amount of beneficiation test to adopt stage grinding-low intensity magnetic separation-high intensity magnetic separation-reverse flotation as the principle beneficiation flowsheet for a certain hematite in Hebei. The test results indicate that we can get iron concentrate with a grade of iron 65.19% and a recovery of iron 63.17% respectively at iron concentrate 21.90%, the primary grinding of 67.54%-200 mesh and secondary grinding of 97.70%-200 mesh.

scholarly journals New mega-sized wet high intensity magnetic separator: a cost-effective solution to reclaim iron ore fines from tailing dams

2013 ◽  
Vol 66 (4) ◽  
pp. 529-533 ◽  
Author(s):  
José Pancrácio Ribeiro ◽  
Claudio Henrique T. Ribeiro
Keyword(s):  
High Intensity ◽  
Iron Ore ◽  
New Technology ◽  
Cost Effective ◽  
Low Grade ◽  
Environment Impact ◽  
Magnetic Separator ◽  
Concentration Plant ◽  
Iron Ore Tailing ◽  
Iron Ore Fines

Ten years of continuous research and development have led to a major improvement in the field of iron ore Wet High Intensity Magnetic Separation - WHIMS. With this cutting-edge technology, Gaustec has established a new world record in this class of Magnetic Separators, by providing a sheer feed rate of up to 1400 tph for iron ore fines. Although low-grade iron ore mines will benefit from this new technology, focused on herein is the reclaiming of low-grade iron ore tailing from ponds, having in mind its huge positive environment impact and business opportunity. Based on this newly developed technology, the construction in Brazil of a Concentration Plant started in 2012 for dressing iron ore tailings at 45% Fe grade, at Itaminas Mine. This plant went into operation this year. Based on the good performance of this first unit, the construction of a second Concentration Plant of the same type, to further reduce to 18% Fe in the tailings, is under way, scheduled to be started-up in 2014.

Experimental Study on the Mineral Processing of a High-Clay and Lean Hematite

2012 ◽  
Vol 550-553 ◽  
pp. 2831-2834
Author(s):  
Wei Zhi Wang ◽  
Qing Mei Jia ◽  
Chun Guang Yang
Keyword(s):  
Experimental Study ◽  
Magnetic Separation ◽  
Experimental Research ◽  
High Intensity ◽  
Mineral Processing ◽  
Shaking Table ◽  
Iron Recovery ◽  
Iron Concentrate ◽  
Second Stage ◽  
Low Intensity

The mineral processing experimental research was carried out on a high mud content lean hematite. The results showed that using the technological flowsheet of “stage grinding- low intensity magnetic separation for obtaining concentrate - high-intensity magnetic separation for discarding tailings-gravity separation(shaking table)”,a final iron concentrate with TFe grade of 65.89% ,yield of 19.35% and iron recovery of 52.32% from the raw ores with TFe grade of 24.07％ was obtained, with the first stage grinding size being 50% -200 mesh and the second stage,95% -200 mesh.

Analysis of Wet High-Intensity Magnetic Separation of Low-Grade Indian Iron Ore using Statistical Technique

2012 ◽  
Vol 47 (8) ◽  
pp. 1129-1138 ◽  
Author(s):  
S. I. Angadi ◽  
Ho-Seok Jeon ◽  
A. Mohanthy ◽  
S. Prakash ◽  
B. Das
Keyword(s):  
Magnetic Separation ◽  
High Intensity ◽  
Iron Ore ◽  
Statistical Technique ◽  
Low Grade

Separating the Anshan-Type Low-Grade Hematite Ore with Process of Gravity-Magnetic Method

2013 ◽  
Vol 303-306 ◽  
pp. 2541-2544 ◽  
Author(s):  
Qing Mei Jia ◽  
Feng Jiu Li ◽  
Ying Li
Keyword(s):  
Magnetic Separation ◽  
High Intensity ◽  
Magnetic Method ◽  
Low Grade ◽  
Hematite Ore ◽  
Ore Grade

According to the nature of the ore which containing hematite and magnetite,under the conditions,for example,ore grade is 24.07%,the first fineness of grinding -200 mesh is 50%，the second fineness of grinding -200 mesh is more than 95%, it is concluded that concentrating circuit consisting of first grind-Feebleness magnetic separation -high intensity magnetic separation，second grind-second-high intensity magnetic separation-shaking tables. Ultimately, A concentrate with a productivity of 19.35%，a grade of 65.89% TFe and the recovery of 52.32%was yielded.

Experimental Research on Beneficiation Process for a Specularite Ore

2011 ◽  
Vol 304 ◽  
pp. 387-390 ◽  
Author(s):  
Wei Zhi Wang ◽  
Jin Rui Zhang ◽  
Chun Guang Yang
Keyword(s):  
Magnetic Separation ◽  
Experimental Research ◽  
High Intensity ◽  
Iron Ore ◽  
Separation Process ◽  
Gravity Separation ◽  
Clay Material ◽  
Reverse Flotation ◽  
Test Results ◽  
Iron Concentrate

An iron ore contains specularite and hematite which are its main iron minerals. And its main gangue minerals are specularite, part of the clay material and a small amount of quartz.Tests are made on the ore by adopting processes including gravity separation, high intensity magnetic separation, high intensity magnetic-gravity separation and high intensity magnetic - reverse flotation. The test results show that the separation process of high intensity magnetic-reverse flotation can obtain an iron concentrate grading about 66.62% at a recovery of 58.38％ from an iron ore assaying around 35.00% iron, rather good metallurgical performances.

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