Development and implementation of new generation cyclone facilities to improve efficiency of iron ore beneficiation and dust collection during its processing

2020 ◽  
Vol 76 (12) ◽  
pp. 1209-1218
Author(s):  
T. A. Oleinik ◽  
V. I. Mulyavko ◽  
V. I. Lyashenko
Keyword(s):  
Iron Content ◽  
Iron Ore ◽  
Dust Particles ◽  
Magnetic Component ◽  
Flow Number ◽  
Dust Collection ◽  
Magnetic Enrichment ◽  
Magnetic Product ◽  
Scientific Practical ◽  
New Generation

Average iron content in industrial ores decreases from year to year. To use them in the processes of agglomeration and pelletizing, enrichment is necessary, accompanied by abundant emission of dust. A significant amount of iron is lost in tailings at existing magnetic enrichment technologies. Therefore, the development and implementation of new generation cyclone facilities to increase the efficiency of iron ore beneficiation and dust collection during its processing is an urgent scientific, practical and social task. The results of the of new generation cyclone facilities implementation for enrichment of iron ore and dust collection during its processing at the mining and processing factories of Kryvbas (Ukraine) are presented. It has been established that dry magnetic separation of finely crushed ore makes it possible to isolate a magnetic product with an iron content of 64-65%. The yield is up to 45%, the extraction of iron into the magnetic product is 73-75% in two-stage schemes. The degree of dust collection by the new generation cyclone facility is exponentially dependent on the speed of the cleaned flow, number and size of coaxial shells, as well as the diameter of dust particles) and is 1.23 times higher comparing with the previously used cyclone of the same size and capacity. The mobile magnetic field in the recommended cyclone allows to capture magnetic dust with an efficiency of up to 95%, and at the same time the dust is separated into a magnetic component (with an iron content of up to 65%) and a non-magnetic component (up to 12% of Fe) with an initial total iron content of up to 33%.

scholarly journals Iron-Ore Sintering Process Optimization / Optymalizacja Procesu Aglomeracji Rudy Żelaza

2015 ◽  
Vol 60 (4) ◽  
pp. 2895-2900 ◽  
Author(s):  
M. Fröhlichová ◽  
D. Ivanišin ◽  
A. Mašlejová ◽  
R. Findorák ◽  
J. Legemza
Keyword(s):  
Iron Content ◽  
Iron Ore ◽  
Raw Materials ◽  
Size Composition ◽  
Sintering Process ◽  
Iron Ore Sintering ◽  
Iron Ore Sinter ◽  
A Charge ◽  
Iron Ore Concentrate

The work deals with examination of the influence of the ratio between iron ore concentrate and iron ore on quality of produced iron ore sinter. One of the possibilities to increase iron content in sinter is the modification of raw materials ratio, when iron ore materials are added into sintering mixture. If the ratio is in favor of iron ore sinter, iron content in resulting sintering mixture will be lower. If the ratio is in favor of iron ore concentrate and recycled materials, which is more finegrained, a proportion of a fraction under 0.5 mm will increase, charge permeability property will be reduced, sintering band performance will decrease and an occurrence of solid particulate matter in product of sintering process will rise. The sintering mixture permeability can be optimized by increase of fuel content in charge or increase of sinter charge moisture. A change in ratio between concentrate and iron ore has been experimentally studied. An influence of sintering mixture grain size composition, a charge grains shape on quality and phase composition on quality of the produced iron sinter has been studied.

Experiment Study on the High-Phosphorus Hematite Carbothermal Reduction in Microwave Field

2011 ◽  
Vol 291-294 ◽  
pp. 1317-1320
Author(s):  
Zhi Jun He ◽  
Yong Long Jin ◽  
Hui Zhang
Keyword(s):  
Experimental Research ◽  
Iron Content ◽  
Carbothermal Reduction ◽  
Iron Ore ◽  
Microwave Field ◽  
Experiment Study ◽  
High Phosphorus ◽  
Reduction Of Iron ◽  
Speed Up ◽  
Dephosphorization Rate

In the paper, the experimental research on dephosphorization and iron yield for high-phosphorus oolitic hematite by coal-based carbothermal reduction was carried out. It indicated that microwave can speed up the rate of carbothermal reduction of iron ore and strengthen the effects of dephosphorization and increasing iron content. The dephosphorization rate and iron yield of high-phosphorus oolitic hematite exceeding 87.8% and 91.8% by the way of carbothermal reduction in the microwave field and a further fine-grinding and magnetic separation.

Iron ore in Arctic Europe

Polar Record ◽  
1959 ◽  
Vol 9 (61) ◽  
pp. 314-319
Author(s):  
P. A. B. Gethin
Keyword(s):  
Kola Peninsula ◽  
Iron Content ◽  
Iron Ore ◽  
The Arctic ◽  
North West ◽  
Eastern Hemisphere ◽  
Iron Bearing ◽  
North Norway

Iron ore in significant quantities has been found in only four areas in arctic Europe. No deposits are known in arctic Asia or in the arctic islands of the eastern hemisphere. The largest iron-bearing area is in Swedish Lapland of which the total known reserves, mainly magnetite and hematite, are estimated at 2413 million metric tons, with an average iron content of over 63 per cent, or a ferric weight of about 1532 million tons. The greater part of this ore requires no concentration before use. There is a deposit of about 1000 million tons in Sør-Varanger in north Norway, with a low iron content, while the deposit at Yena in Kol'skiy Poluostrov (Kola peninsula) is estimated at nearly 850 million tons of ore with an iron content of 23 to 48 per cent, and like the Varanger ore requires concentration. A deposit with an iron content of 30 to 40 per cent has been investigated recently at Kolari in north-west Finland, but it is not yet worked.

MODELING OF PROCESSES AND DEVELOPMENT OF MEASURES TO REDUCE DUST AND GAS EMISSIONS AT THE QUARRIES OF MINING AND PROCESSING PLANT

2019 ◽  
Vol 12 (2) ◽  
pp. 26-32 ◽  
Author(s):  
Алла Звягинцева ◽  
Alla Zvyaginceva ◽  
Светлана Сазонова ◽  
Svetlana Sazonova ◽  
В. Кульнева ◽  
...  
Keyword(s):  
Working Conditions ◽  
Environmental Safety ◽  
Open Pit ◽  
Dust Particles ◽  
Processing Plant ◽  
Technical Solution ◽  
Dust Collection ◽  
Gas Emissions ◽  
Improve Working ◽  
Surface Active

Existing measures for the suppression of dust and gas emissions during mass explosions at the quarry of a mining and processing plant were investigated. Measures have been developed to reduce dust and gas emissions, taking into account the analysis of existing measures to suppress dust and gas emissions from mass explosions in the open pit of the mining and processing plant of Lebedinsky GOK. The studies of surface active substances on the wettability of dust particles. In order to improve working conditions, it was proposed to reduce dust and gas emissions by suppressing them at the source of education, using the method of wetting and sticking of dust particles. The proposed engineering - technical solution can be used to reduce dust and gas emissions during massive explosions in the quarries of various mining and processing enterprises. The developed method is proposed to be used to ensure environmental safety and improve working conditions in industries with high dustiness by increasing the efficiency of dust collection.

Efficiency of Tungsten Dust Collection of Different Types of Dust Particles by Electrostatic Probe

2017 ◽  
Vol 80 (11) ◽  
pp. 1642-1646 ◽  
Author(s):  
L. B. Begrambekov ◽  
A. N. Voityuk ◽  
A. M. Zakharov ◽  
O. A. Bidlevich ◽  
E. A. Vechshev ◽  
...  
Keyword(s):  
Dust Particles ◽  
Dust Collection ◽  
Different Types ◽  
Electrostatic Probe

scholarly journals Enhancement of the technology of mining steep ore bodies applying the “floating” crown

2021 ◽  
Vol 280 ◽  
pp. 08013
Author(s):  
Serhii Pysmennyi ◽  
Serhii Chukharev ◽  
Kyelgyenbai Khavalbolot ◽  
Iryna Bondar ◽  
Jambaa Ijilmaa
Keyword(s):  
Rock Mass ◽  
Rock Pressure ◽  
Iron Content ◽  
Iron Ore ◽  
Underground Mines ◽  
Protective Structure ◽  
Unit Load ◽  
Block Caving ◽  
Crown Length ◽  
Ore Bodies

When mining ore bodies in Kryvyi Rih iron ore basin, underground mines apply open stoping or bulk caving systems in proportion of 55% to 45%. Most of underground mines prefer stoping with pillar caving. Yet, rock pressure contributes to growth of costs for workings maintenance and deterioration of extraction indices. Rock mass extraction indices can be enhanced by application of a protectve structure in the upper part of the block that will enable additional decrease in load on the draw level. There are a great many of methods for determining parameters of constructive elements of the protective structure that help keep its integrity for the whole period of block mining. The article suggests methods for determining parameters of the protective structure when mining steep ore bodies. The research conducted demonstrates that with the inclined protective structure, increase of unit load on it from 200 to 1200t/m2 leads to decrease of its thickness from 6.3-20.9m to 5.5-18.4m and increase of the crown length from 40m to 60m. The developed block caving system with application of the protective structure when mining steep ore bodies enables overall decrease of ore dilution in the block by 3%, increase of iron content in the mined ore by 1.3% without significant mining costs growth and decrease of loads on the workings of the receiving level.

scholarly journals Model of absorbed gamma radiation in the interaction with rock formation

2019 ◽  
Vol 8 (4) ◽  
pp. 269
Author(s):  
A. A. Azaryan ◽  
A. N. Gritsenko ◽  
A. A. Trachuk ◽  
V. M. Serebrenikov ◽  
D. V. Shvets
Keyword(s):  
Quality Control ◽  
Gamma Radiation ◽  
Iron Content ◽  
Radiation Intensity ◽  
Nuclear Physics ◽  
Iron Ore ◽  
Mountain Ranges ◽  
Rock Formation ◽  
Operational Quality

The article discusses issues of improving the accuracy of operational quality control of iron ore in mountain ranges. There was proposed the use of the absorbed gamma radiation indicator as an improvement of the nuclear physics method for determining the iron content in ore mass are proposed. There were obtained the relationships of the sensitivity of the absorbed gamma radiation intensity on the distance between the detector and the irradiated surface, as well as on the distance between the source and the detector of gamma radiation.

scholarly journals Properties of Dust Particles Sampled from Windboxes of an Iron Ore Sintering Plant: Surface Structures of Unburned Carbon

2006 ◽  
Vol 46 (7) ◽  
pp. 1020-1026 ◽  
Author(s):  
Naoto Tsubouchi ◽  
Shunsuke Kuzuhara ◽  
Eiki Kasai ◽  
Hiroyuki Hashimoto ◽  
Yasuo Ohtsuka
Keyword(s):  
Iron Ore ◽  
Surface Structures ◽  
Dust Particles ◽  
Unburned Carbon ◽  
Plant Surface ◽  
Iron Ore Sintering ◽  
Ore Sintering ◽  
Sintering Plant

Determination of Total Iron Content in Iron Ore and DRI: Titrimetric Method Versus ICP-OES Analysis

2016 ◽  
pp. 125-133 ◽  
Author(s):  
Yousef Mohassab ◽  
Mohamed Elzohiery ◽  
Feng Chen ◽  
Hong Yong Sohn
Keyword(s):  
Iron Content ◽  
Iron Ore ◽  
Total Iron ◽  
Icp Oes ◽  
Total Iron Content ◽  
Titrimetric Method

Beneficiation Study on an Oolitic Hematite

2013 ◽  
Vol 690-693 ◽  
pp. 202-205
Author(s):  
Jie Sun ◽  
Jin Zhu Zhang
Keyword(s):  
Iron Content ◽  
Iron Ore ◽  
Phosphorus Content ◽  
Acid Leaching ◽  
Iron And Steel Industry ◽  
Iron And Steel ◽  
Potential Source ◽  
Roasting Temperature ◽  
The Magnetic Field ◽  
Grinding Time

The oolitic hematite with a lower iron content and a higher phosphorus content will be a potential source of raw iron ore for the Chinese iron and steel industry. The magnetization reducing roasted and magnetic separation is a practical beneficiation process. The results show that the iron content in the concentrate can be increased to 57.63% from 45.95%, the iron recovery up to 73.12%, when the parameters are as follows, the roasting temperature is 900°C, the residence time 70 min, the ratio of reducing agent 5%, the grinding time 7 min, and the magnetic field strength 0.15T. The phosphorus content in the concentrate can be reduced to 0.23% from 0.39% by means of acid leaching.

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