A Combined Beneficiation Process to Recover Iron Minerals from a Finely Disseminated Low-Grade Iron Ore

2013 ◽  
Vol 634-638 ◽  
pp. 3273-3276
Author(s):  
Si Qing Liu ◽  
Min Zhang ◽  
Wan Ping Wang ◽  
Xiu Juan Li
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Shaking Table ◽  
Low Grade ◽  
Gravity Concentration ◽  
Iron Minerals ◽  
Iron Concentrate ◽  
Low Intensity ◽  
Mineralogical Study ◽  
Basic Facts

In this research, a refractory iron ore is processed, according to the basic facts of mineralogical study. Mineralogy shows that the ore is characterized by the finely disseminated iron minerals with a small amount in the ore. Iron minerals in the ore are mainly hematite and magnetite. On the basis of the ore characteristic, a flowsheet of "stage grinding-low intensity magnetic separation-high intensity magnetic separation-gravity concentration by fine shaking table" was developed. An iron concentrate assaying 51.45% Fe at a recovery of 62.12% was obtained when the raw ore contains 18.61% Fe.

Experimental Research of Low-Grade Tin-Iron Ore Separation

2013 ◽  
Vol 641-642 ◽  
pp. 377-380
Author(s):  
Yi Miao Nie ◽  
Qi Hui Dai ◽  
Xiao Long Lu
Keyword(s):  
Magnetic Separation ◽  
Concentration Ratio ◽  
Iron Ore ◽  
Shaking Table ◽  
Low Grade ◽  
Gravity Concentration ◽  
Iron Concentrate ◽  
Stage Separation ◽  
Concentrate Grade ◽  
Iron Grade

Iron ore and tin mineral are the mainly recovered minerals of the low-grade ore, which could be effectively separated by a strong magnetic separation-gravity concentration process, with ore iron grade of 20.3%, tin grade 0.18%. Stage grinding and stage separation was used, getting the grade of iron concentrate and the recovery rate of tin separation index, the feeder of tin was magnetic separation tailing, by shaking table re-election, obtained tin concentrate grade was 10%, production was 0.34% (compared to the original ore, tin dressing) .Tin concentration ratio reached more than 330.

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．

Research on Exploration of Mineral Processing for a Iron Ore

2015 ◽  
Vol 1094 ◽  
pp. 397-400
Author(s):  
Xian Xie ◽  
Zi Xuan Yang ◽  
Xiong Tong ◽  
Ji Yong Li
Keyword(s):  
Magnetic Separation ◽  
Calcium Oxide ◽  
Iron Ore ◽  
Mineral Processing ◽  
Low Grade ◽  
Iron Minerals ◽  
Iron Mineral ◽  
Ore Minerals ◽  
Separation Test

Iron ore minerals are mainly silicate-type iron minerals in raw ore, and its distribution rate was 51.93%; followed by magnetic iron, and its distribution rate was 36.81%; content and distribution rate of other minerals was very low; element grade of iron, phosphorus, sulfur, silica were 11.90%, 0.043%, 0.013% and 45.23%, the main gangue were silica and calcium oxide, recyclable iron minerals mainly is magnetic iron mineral. Due to the grade of iron of raw ore and the amounts of optional magnetite was relatively little, in order to investigate the optional of low-grade ore, weak magnetic separation test and weak magnetic separation tailings-strong magnetic separation test were put into effect.

Magnetic Separation to Recover Iron Minerals from Flotation Tailings

2012 ◽  
Vol 577 ◽  
pp. 183-186
Author(s):  
Si Qing Liu ◽  
Xiong Tong ◽  
Jian Yang ◽  
Jia Gui You
Keyword(s):  
Magnetic Separation ◽  
Low Grade ◽  
Test Results ◽  
Flotation Tailings ◽  
Iron Minerals ◽  
Iron Concentrate

Large amount of surrounding rocks in Jianshui China has been discarded for many years, and the “rock” is characterized by Cu-Fe poly-metallic constituents and of low grade. A joint process of flotation and magnetic separation was proposed to process the ore. This paper introduces the test results of flotation tailings by a wet drum separator. Results show that iron concentrate assaying 60.21-68.12% Fe at a recovery of 71.9-75.32% can be obtained, when the flotation tailings assays 33.91%Fe. At the same time, a joint process has put forward to make full utilize the “rock”.

Experimental Research on Low Grade Copper-Bearing Magnetite in one Area

2011 ◽  
Vol 347-353 ◽  
pp. 157-162
Author(s):  
Jun Liu ◽  
Jiang An Chen
Keyword(s):  
Magnetic Separation ◽  
Experimental Research ◽  
Low Grade ◽  
Research Subjects ◽  
Flotation Process ◽  
Valuable Metal ◽  
Comprehensive Utilization ◽  
Iron Concentrate ◽  
Low Intensity ◽  
National Resource

Recovering valuable metal from tailings has always been one of national resource comprehensive utilization key research subjects. There are copper-bearing magnetite which contains 43.31% of iron and 0.21% of copper in some places. After grinding-low intensity magnetic separation-flotation process can get 68.87% of iron concentrate with recovery 64.39% and copper concentrate which contain copper 12.67% with recovery of 75.30%. The experiment results will provide an effective way to comprehensive utilize the resource in one area.

Experimental Study on Magnetic Roasting of Low Grade Specularite

2012 ◽  
Vol 454 ◽  
pp. 189-193
Author(s):  
Li Mei Bai ◽  
Bo Liu ◽  
Yu Hao ◽  
Xiao Liang Zhang ◽  
Yu Xin Ma
Keyword(s):  
Steel Industry ◽  
Iron Ore ◽  
Low Grade ◽  
Paper Study ◽  
Iron Concentrate ◽  
Low Intensity ◽  
Self Sufficiency ◽  
Roasting Temperature ◽  
Chinese Steel Industry ◽  
Ore Grade

Along with the continuously rose of the iron ore price and the Chinese iron ore quantity demanded, Iron ore self-sufficient rate has become the bottleneck of Chinese steel industry development. In order to increase Chinese ore self-sufficiency rate, the paper study the xinjiang region low grade specularite. When the crude ore grade is 35%, the mass percent of reducing agent pulverized coal is 12%, roasting temperature is 800°C，roasting time is 50 min, milling fineness is 90% passing 0.074 mm and the magnetic induction is 84kA/m, after a low intensity magnetic separation, the iron concentrate can be got whose yield is 42.83%, grade is 62.04% and recovery is 79.26%.

Beneficiation Test Research on High Grade Hematite-Limonite Ore

2013 ◽  
Vol 295-298 ◽  
pp. 3029-3033 ◽  
Author(s):  
Yan Hua Guo ◽  
Hui Xin Dai ◽  
Jun Long Yang
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Impurity Content ◽  
Silica Content ◽  
High Grade ◽  
High Gradient Magnetic Separation ◽  
Total Recovery ◽  
Iron Concentrate ◽  
Low Intensity ◽  
Ore Grade

The run of mine ore grade of Gan Shang Yan is 47.83%, iron ore grade is higher, but harmful element sulfur and impurity silica content is relatively high. This experiment using a simple process low intensity magnetic separation-high gradient magnetic separation, for the ultimate index for comprehensive grade of iron concentrate is 58.41%, at a total recovery of 80.85%, and obtain good experiment index, the harmful elements and impurity content can meet the standard.

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.

Comprehensive Utilization Study of Iron Tailings

2012 ◽  
Vol 178-181 ◽  
pp. 791-794
Author(s):  
Feng Zhi Dong
Keyword(s):  
Magnetic Separation ◽  
Resource Utilization ◽  
Field Intensity ◽  
High Intensity ◽  
Iron Ore ◽  
Low Grade ◽  
Total Recovery ◽  
Comprehensive Utilization ◽  
Low Intensity ◽  
Iron Ore Tailings

It's is very effective using high intensity magnetic separation and low intensity magnetic separation to process magnetite tailings. The best fineness for separation is -0.045mm 85%. The concentrate contains Fe 67.86% under 0.2T field intensity. Processing the tailings twice under 0.5T field intensity, the concentrate contains Fe 55.06%.The total recovery is 53.72%. The study on low-grade iron ore tailings to recover iron achieves good results in improving resource utilization.

Biomass Reduction Roasting-Magnetic Separation of Low Grade Goethite

2015 ◽  
Vol 814 ◽  
pp. 235-240 ◽  
Author(s):  
Qiu Yue Wang ◽  
Yan Wu ◽  
Yong Huo Li ◽  
Xiang Yang
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Fossil Fuels ◽  
Hainan Island ◽  
Low Grade ◽  
Low Carbon ◽  
Reduction Roasting ◽  
Corn Straw ◽  
Biomass Fuels ◽  
Iron Concentrate

The average grade of iron ores in China is around 32%, about 10% lower than the world’s average level. In order to alleviate the demand of iron ore for steelmaking industries, it is urgent to develop a highly efficient, energy-saving, low-carbon and environment-friendly technology. The goethite ore from Northern Hainan Island was studied via reduction magnetization by pine, rice chaff, and corn straw biomass fuels. The magnetic properties and magnetic separation were discussed by optimizing the parameters of roasting temperature, roasting time, and the ratio of biomass fuels. The results show that we could obtain concentrated iron ore grade of pine roasting and magnetic separation grade of iron concentrate 61.64% with the recovery of 79.75% via pine fuel roasting, 61.75% with the recovery 80.16% via rice chaff, and 61.47% with the recovery of 81.28% via corn straw roasting. Thereby, we could deduce that biomass fuels for reduction roasting of low goethite ore is promising to substitute the traditional coal and coke fossil fuels.

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