Vibrations in engineering and technology

of Mineral Processing Machines and Processes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM NASU), Dnipro, Ukraine, 

e-mail: nadutyvp@gmail.ua.

Jamil Haddad – Assistant Professor, Ph.D., Department of Mechanical Engineering, Al-Balqa Applied University, Amman, Jordan, e-mail: drjamil@bau.edu.jo. 

Suharyev Vitaliy – Candidate of Technical Sciences (Ph.D), Senior Researcher of Department of Mechanics of Mineral Processing Machines and Processes, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, e-mail: agnivik@ukr.net.

The problems associated with efficient classification of hard-to-sieve wet and sticky mined rock masses are far from being solved and require further theoretical and experimental efforts. It is the purpose of the present investigation to determine the values of impact energy required to destroy the layer of mined rock by the vibrating roller classifier executive tool, which could be implemented either with rubber or steel material. The authors carry out the experiment to compare different material types of the teeth of vibrating roller classifier in order to get the maximum value of impact energy. Experiments involved measurements of height of fall H, thickness of a mined rock layer h with taking into account different sizes and humidity of the rock lumps. As a result of the experiments we can conclude that at sieving wet materials rubber teeth disks show characteristics similar to steel ones, what confirms the efficiency of their use for the classification of hard-to-sieve wet mined rock.

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