EFFECT OF SHOCK LOADS ON THE STRENGTH OF IRON ORE PELLETS
https://doi.org/10.17073/0368-0797-2016-12-847-851
Abstract
At production of pellets one makes special demands on them, including the strength requirements. Pellets are subjected to the additional impact stresses in transfer units and ports; as a result there is not only their partial destruction but the decrease of strength properties in totality. The paper presents the research results on the destruction of pellets according to the classes, depending on the impact stress. When producing the pellets, it should be taken into consideration the probability of their softening in the results of loading and unloading ope rations during the transportation. Thereby, the safety factor increases with the increase of the number of loads and their height. For example, in the case from 5 to 10 loads the strength of the produced pellets should be not less than 285 kg/pellet; and when they are received by the consumers their strength should be not less than 200 kg/pellet. At the impact of stresses the compression strength of pellets decreases as the result of inner fractions formation. The primary strength of pellets should be more than the value, guaranteed by technical or contractual conditions.
About the Authors
A. S. Timofeeva
Stary Oskol Technological Institute of National University of Science
and Technology “MISiS”
Russian Federation
Russian Federation
Stary Oskol, Belgorod Region
Cand. Sci. (Eng.), Professor of the Chair “Metallurgy and Metallography”
T. V. Nikitchenko
Stary Oskol Technological Institute of National University of Science
and Technology “MISiS”
Russian Federation
Russian Federation
Stary Oskol, Belgorod Region
Cand. Sci. (Eng.), Assist. Professor of the Chair “Metallurgy and Metallography”
V. V. Fedina
Stary Oskol Technological Institute of National University of Science
and Technology “MISiS”
Russian Federation
Russian Federation
Stary Oskol, Belgorod Region
Cand. Sci. (Eng.), Assist. Professor of the Chair “Metallurgy and Metallography”
K. A. Eliseeva
Stary Oskol Technological Institute of National University of Science
and Technology “MISiS”
Russian Federation
Russian Federation
Stary Oskol, Belgorod Region
MA Student of the Chair “Metallurgy and Metallography”
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Review
For citations:
Timofeeva A.S., Nikitchenko T.V., Fedina V.V., Eliseeva K.A. EFFECT OF SHOCK LOADS ON THE STRENGTH OF IRON ORE PELLETS. Izvestiya. Ferrous Metallurgy. 2016;59(12):847-851. (In Russ.) https://doi.org/10.17073/0368-0797-2016-12-847-851
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