Nadutyy V.P., Loginova A.A., Sukharyev V.V., Effectiveness of the use of shock-centrifugal disintegrator implementing shear deformation in rock mass destruction

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Parent Category: Geo-Technical Mechanics, 2016

Category: Geo-Technical Mechanics, 2016, Issue 131

 

Geoteh. meh. 2016, 131, 26-32

 EFFECTIVENESS OF THE USE OF SHOCK-CENTRIFUGAL DISINTEGRATOR IMPLEMENTING SHEAR DEFORMATION IN ROCK MASS DESTRUCTION

¹Nadutyy V.P., ¹Loginova A.A., ¹Sukharyev V.V.

¹IGTM NAS of Ukraine 

UDC 622.73:621.926

Abstract. The article presents grounds for use of a newly-designed disintegrator, which implements predominantly rock-breaking mechanism with the shear deformations. Analysis of the rock-sample stress state under the uniaxial loading has shown that this design is the most energysaving and efficient one. A new design of the shock-centrifugal disintegrator of the twin-shaft type, in which rotor shafts are spaced apart in separate chambers, is also considered. The main advantages of this design are that a load is distributed on the two shafts, and energy of two counter flows is used for breaking rock particles both by collision energy when the particles collide, and byshear deformation due to the particle friction at high speed in the counter flows. The article also presents experimental data on the rock mass crushing by the twin-shaft disintegrator, which showed that the output of material with size less than 100 microns crushed by the twin-shaft disintegratorwas more than 2.5 times higher than for the single-shaft disintegrator. The results obtained confirm feasibility of the twin-shaft disintegrator use.
Keywords: disintegrator, shock, shear, fracture, rock mass, efficiency, productivity.

REFERENCES

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About the authors:

Nadutyy Vladimir Petrovich, Doctor of Technical Sciences (D.Sc.), Professor, Head of Department of Geodynamic Systems and Vibration Technologies, N.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Loginova Anastasiya Aleksandrovna, Engineer in Department of Geodynamic Systems and Vibration Technologies, N.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Sukharyev Vitaliy Vitalievich, Candidate of Technical Sciences (Rh.D), Senior Researcher in Department of Mechanics of Mineral Processing Machines and Processes, N.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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