scholarly journals Technological study of iron ore processing from Chandmani-Uul deposit by dry and wet magnetic separation

2019 ◽  
pp. 12-17
Author(s):  
Unursaikhan B ◽  
Baasanjav D ◽  
Sugir-Erdene N ◽  
Orgilbayar B ◽  
Sukhbat S ◽  
...  
Keyword(s):  
Particle Size ◽  
Electric Power ◽  
Magnetic Separation ◽  
Iron Ore ◽  
Iron Concentrate ◽  
Combination Methods ◽  
Ore Processing ◽  
Processed Sample ◽  
Dry Magnetic Separation ◽  
Technological Study

The iron ore sample is processed in laboratory conditions with methods of both dry and wet magnetic separation. The particle size of the processed sample was 1 mm electric power of dry magnetic separation 0.2A-0.6A, and the rotation number of the separation drum was chosen to be 32 per/min. The most suitable procedures to get standardized concentrate are optimized through considering the following facts that the duration of wet magnetic separation is 20, 30, 40, 50 minutes, classification yield is 43.50 %, 55.70%, 72.70%, 85.20% for 0.074 mm crushed particles, and the electric power is 1A-5A of the wet magnetic drum. As a result of this process, the initial Fe concentration of the primary ore has increased from 43.59% to 65.60% and the recovery arose to 96.93%. Therefore, the combination methods of dry and wet iron ore separation are applicable for processing of iron concentrate with higher pureness that meets the requirements of metallurgical industries. Чандмань-Уул ордын төмрийн хүдрийг хуурай соронзон болон нойтон соронзон аргаар баяжуулах технологийн судалгаа Хураангуй: Төмрийн хүдрийг лабораторийн нөхцөлд хуурай болон нойтон соронзон баяжуулалтын хосолсон аргаар баяжуулсан. Нойтон соронзон баяжуулалтын нунтаглалтын хугацаа 20, 30, 40, 50 мин, 0.074 мм-ийн ангилал харгалзан 43.5%, 55.7%,72.7%, 85.2%-тай байхад соронзон орны 1-5А гүйдлийн хүч зэргээс хамааруулан стандарт баяжмал гарган авах технологийн зохистой горимуудыг тогтоосон. Анхдагч хүдэр дэх төмрийн агуулга 43.59% байсан бол туршилт судалгааны үр дүнд төмрийн агуулга 65.60% болж 96.93%-ийн металл авалттай төмрийн баяжмал гарган авсан. Иймд хуурай, нойтон соронзон баяжуулалт хосолсон схемээр төмрийн хүдрийг баяжуулах нь цаашид металлургийн үйлдвэрийн шаардлага хангасан өндөр цэвэршилттэй төмрийн баяжмал гарган авах боломжтой гэж үзэв. Түлхүүр үг: Төмрийн хүдэр, хуурай соронзон баяжуулалт, нойтон соронзон баяжуулалт, төмрийн баяжмал

scholarly journals Selective Separation of Hematite by a Synthesized Depressant in Various Scales of Anionic Reverse Flotation

Minerals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 124 ◽  
Author(s):  
Arash Tohry ◽  
Reza Dehghan ◽  
Saeed Chehreh Chelgani ◽  
Jan Rosenkranz ◽  
Omid Rahmani
Keyword(s):  
Iron Oxide ◽  
Iron Ore ◽  
Selective Separation ◽  
Reverse Flotation ◽  
High Quality ◽  
Main Hypothesis ◽  
Iron Concentrate ◽  
Ore Processing ◽  
The World ◽  
Apatite Group

Demand for high-quality iron concentrate is significantly increasing around the world. Thus, the development of the techniques for a selective separation and rejection of typical associated minerals in the iron oxide ores, such as phosphorous minerals (mainly apatite group), is a high priority. Reverse anionic flotation by using sodium silicate (SS) as an iron oxide depressant is one of the techniques for iron ore processing. This investigation is going to present a synthesized reagent “sodium co-silicate (SCS)” for hematite depression through a reverse anionic flotation. The main hypothesis is the selective depression of hematite and, simultaneously, modification of the pulp pH by SCS. Various flotation experiments, including micro-flotation, and batch flotation of laboratory and industrial scales, were conducted in order to compare the depression selectivity of SS versus SCS. Outcomes of flotation tests at the different flotation scales demonstrated that hematite depression by SCS is around 3.3% higher than by SS. Based on flotation experiment outcomes, it was concluded that SCS can modify the pH of the process at ~9.5, and the plant reagents (including NaOH, Na2CO3, and SS gel) can be replaced by just SCS, which can also lead to a higher efficiency in the plant.

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.

scholarly journals Technological research on converting iron ore tailings into a marketable product

2021 ◽  
Vol 121 (5) ◽  
Author(s):  
I. Mitov ◽  
A. Stoilova ◽  
B. Yordanov ◽  
D. Krastev
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Zinc Content ◽  
Mass Yield ◽  
Iron Recovery ◽  
Flotation Process ◽  
Iron Concentrate ◽  
Iron Ore Tailings ◽  
Lead And Zinc ◽  
Magnetizing Roasting

SYNOPSIS We present three technological scenarios for the recovery of valuable components from gangue, stored in the tailings dam at Kremikovtzi metallurgical plant in Bulgaria, into marketable iron-containing pellets. In the first approach the iron concentrate was recovered through a two-stage flotation process, desliming, and magnetic separation. In the second proposed process, the iron concentrate was subjected to four sequential stages of magnetic separation coupled with selective magnetic flocculation. The third route entails the not very common practice of magnetizing roasting, followed by selective magnetic flocculation, desliming, and magnetic separation. The iron concentrate was pelletized in a laboratory-scale pelletizer. Each technology has been assessed with regard to the mass yield of iron concentrate, the iron recovery. and the iron, lead, and zinc content in order to identify the most effective route. Keywords: tailings reprocessing, magnetizing roasting, pelletization.

scholarly journals Dry magnetic separation technology for the recovery of iron minerals in fine-grained steel slag

2020 ◽  
Vol 40 (1) ◽  
pp. 7-16
Author(s):  
Liang Chang Shi ◽  
Nan Sheng Wang ◽  
Gan Cheng
Keyword(s):  
Particle Size ◽  
Magnetic Separation ◽  
Steel Slag ◽  
Separation Distance ◽  
Magnetic Separator ◽  
Separation Technology ◽  
Fine Grained ◽  
Dry Magnetic Separation ◽  
Concentrate Grade ◽  
Parameter Values

Using the MagNet software package, a permanent magnetic circuit was simulated and a sectorially-spliced magnetic system was designed. Consequently, a new roller permanent magnetic separator with different magnetic field intensities in each roller was developed. The modular structural design allows fine-grained minerals with different magnetic susceptibility to be separated in one pass, according to their different processing characteristic. Steel slag, selected from a factory, was crushed, ground and sieved into 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 40Hz, the concentrate recovery and concentrate grade of the new separation technology reached up to 52.78% and 64.74%, in comparisson with the existing technology. Thus, it was demonstrated that the self-developed separation technology has the potential to improve the iron recovery of the fine-grained steel slag.

Research on the Middlings from Dong Anshan Iron Ore by Roasting-Magnetic Dressing

2013 ◽  
Vol 826 ◽  
pp. 102-105
Author(s):  
Ji Wei Lu ◽  
Nai Ling Wang ◽  
Wan Zhong Yin ◽  
Rui Chao Zhao ◽  
Chuang Yuan
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Reduction Roasting ◽  
Iron Recovery ◽  
Flotation Process ◽  
Iron Concentrate ◽  
Iron Grade

For the middlings (containing siderite) separated from Dong Anshan carbonaceous iron ore which was dressed by a two-step flotation process, using roasting-magnetic and regrinding-magnetic separation, the iron concentrate with iron grade and iron recovery of 60.31%, 87.49% was obtained. Mechanism of reduction-roasting was studied by means of XRD in the end.

scholarly journals Dry Magnetic Separation of Iron Ore of the Bakchar Deposit

2015 ◽  
Vol 15 ◽  
pp. 160-166 ◽  
Author(s):  
A.M. Ezhov ◽  
Y.B. Shvaljov
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Dry Magnetic Separation

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.

Suspended Magnetic Roasting Study of Fine Grained Iron Ore

2013 ◽  
Vol 826 ◽  
pp. 126-129
Author(s):  
Ru Wang ◽  
Yue Xin Han ◽  
Yan Jun Li ◽  
Yu Shu Zhang
Keyword(s):  
Magnetic Separation ◽  
Recovery Rate ◽  
Iron Ore ◽  
Gas Velocity ◽  
Fine Grained ◽  
Iron Concentrate ◽  
Roasting Furnace ◽  
Siderite Ore ◽  
Concentrate Grade

Suspension roasting furnace was used as the reactor of magnetic roasting of fine grained siderite, and the N2 was used as the conveying gas. The results show that, the siderite ore be roasted at the conditions of gas velocity is 1.7m/s, and the roasted time is 12.35s, according to magnetic separation can obtained iron concentrate grade is 65.04%, and recovery rate is 93.03%.

scholarly journals Study of a possibility of enrichment of fine-crushed magnetite ore by dry magnetic separation

2019 ◽  
Vol 75 (5) ◽  
pp. 564-571
Author(s):  
N. V. Sedinkina ◽  
O. E. Gorlova ◽  
N. V. Gmyzina ◽  
E. Yu. Degodya
Keyword(s):  
Magnetic Separation ◽  
High Efficiency ◽  
Magnetic Fraction ◽  
Magnetite Ore ◽  
Ore Processing ◽  
Initial Stage ◽  
Specific Magnetic Susceptibility ◽  
Dry Magnetic Separation ◽  
Lower Limits ◽  
And Storage

Dry magnetic separation (DMS) enables to separate the non-magnetic fraction of iron ores at the initial stage of their concentration and therefore to decrease cost of their further processing. However, a considerable amount of metal is lost in DMS tails at that. The efficiency of DMS considerably depends on difference between the upper and lower limits of the ore coarseness) ore coarseness range), delivered for concentration. At the Magnitogorsk steel-works crushing and concentration plant No. 5 this range is from 50 mm up to 15 mm. To determine the optimal ore size, delivered to DMS, studies accomplished to determine the specific magnetic susceptibility of the magnetite and the burden for the magnetite ore of Maly Kuibas deposit. After the study of different size iron ore separation, a reasonability of the DMS feed size decreasing down to 30–7 mm shown. A possibility to obtain additional product of 7–0 mm size determined, suitable for sintering. It will enable to decrease the amount of material, delivered for crushing and wet magnetic separation, as well as to decrease expenses for transporting and storage of wet separation tails. Peculiarities of fine magnetite ore processing by DMS in a suspended state considered, optimal parameters of the separator determined and its high efficiency for magnetite ore of 7–0 mm size concentration shown.

Improvement of the technology for processing siderite ore from the Bakal deposit

2021 ◽  
Vol 27 (4) ◽  
pp. 6-12
Author(s):  
Е. Degodya ◽  
◽  
N. Sedinkina ◽  
О. Shavakuleva ◽  
N. Gmyzina ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnesium Oxide ◽  
Magnetic Separation ◽  
Mass Fraction ◽  
Iron Ore ◽  
Raw Material ◽  
Magnetic Fraction ◽  
Suspended State ◽  
Dry Magnetic Separation ◽  
Siderite Ore

The Urals is one of the unique iron ore provinces of the world, including all the variety of iron ores. Siderite ores are represented by the Bakal group of deposits, in which siderite in mineralogical terms is not a chemically pure iron carbonate, but has an isomorphic admixture of magnesium and calcium, forming sideroplesite and pistomesite. The main iron ore mineral of the siderite ore of this deposit is an isomorphic mixture of iron, magnesium and manganese carbonates, which occur in different quantitative ratios. A scheme for ore dressing is proposed, which includes crushing to a size of 10-0 mm and dry magnetic separation in a suspended state at a magnetic field strength of 52 k/m. The study of dry magnetic separation of siderite ore was carried out on a suspended separator with a constant magnetic field and on an electromagnetic separator 138T-SEM. The resulting magnetic fraction is sent to the baking, subsequent crushing to a size of 2-0 mm and dry magnetic separation in the suspended state. To increase the mass fraction of iron and reduce the mass fraction of magnesium oxide, the magnetic fraction is sent for grinding and wet magnetic separation. The results of the experiments have showed that the enrichment using high-intensity dry magnetic separation of siderite ore from various sections of the deposit, the mass fraction of MgO decreased from 9.4-12.3% to 8.0-10.1%, and the mass fraction of iron increased from 28.8-33.4% to 31.4-40.8%. As a result, a product with a mass fraction of iron 59.3-60.1% and magnesium oxide 10.0-11.3% has been obtained. The developed enrichment technology allows us to obtain conditioned raw materials, which can serve as a promising raw material for PJSC Magnitogorsk Iron and Steel Works (PJSC MMK)

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