scholarly journals Gamma radiation as a source of information for monitoring the iron content in iron ore

2020 ◽  
pp. 153-159
Author(s):  
A.A. Azaryan ◽  
D.V. Shvets ◽  
◽  
Keyword(s):  
Gamma Radiation ◽  
Iron Content ◽  
Iron Ore ◽  
Source Of Information

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 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.

scholarly journals Gamma radiation as a source of information about the characteristics of celestial bodies

2018 ◽  
Vol 63 ◽  
pp. 00002
Author(s):  
Marek Przyborski ◽  
Zuzanna Siemieniago
Keyword(s):  
Remote Sensing ◽  
Gamma Radiation ◽  
Neutron Stars ◽  
Binary Systems ◽  
Fundamental Question ◽  
The World ◽  
Celestial Bodies ◽  
Remote Sensing Methods ◽  
Source Of Information ◽  
The Universe

The Universe is a violent and hostile environmental. Remote sensing methods give the possibility to search for the answer to the most fundamental question that humankind has ask, how the universe works? In this paper we would like to take a closer look at the some specific objects in the Universe that their influence on its evolution is still a matter of research all over the world. The Gamma Bursts are one of the most dangerous phenomenon that we have ever discovered. Astronomers may observe them also when watching and searching for another form of energy propagated through the time and space gravitational waves caused by binary systems of neutron stars. In the following we would like to explain the fundamentals of multi-messenger astronomy.

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.

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.

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.

Iron Sands from the Black Sea

1981 ◽  
Vol 31 ◽  
pp. 137-139 ◽  
Author(s):  
R. F. Tylecote
Keyword(s):  
Permanent Magnet ◽  
19Th Century ◽  
Black Sea ◽  
Iron Content ◽  
Iron Ore ◽  
The Black Sea ◽  
Black Sands ◽  
The 19Th Century ◽  
Iron Bearing ◽  
Early Source

The use of iron-bearing sands such as those of the Black Sea has often been thought of as an early source of iron ore by archaeo-metallurgists. Indeed Japan was an avid user of such material as late as the 19th century, and its use was being considered by the Turkish authorities in 1975.The black sands of the south side of the Black Sea are very extensive, and obvious to the layman because of their unusual nature. They are also highly magnetic and quite a high proportion can be picked up with the aid of a small permanent magnet. On two occasions samples were taken and examined for their iron content and to see how reducible they were, i.e. how easy it would be for early smiths to use them. The analysis of two batches is given in Table 1. The first sample was taken from near Kirazlik, which is 42 km. west of Trabzon, and the second from sites extending from 4 km. west of Ordu to 10 km. west of Ünye. It is clear that there is not much difference in the composition from the two sites which are about 100 km. apart.

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